A method for treating garbage by pyrolysis and gasification

Abstract

The present invention discloses a method for treating garbage by pyrolysis and gasification, which comprises the following steps: putting garbage into a garbage pyrolysis and gasification furnace for storage, drying, pyrolysis and gasification, and combustion treatment; introducing the flue gas from the garbage pyrolysis and gasification furnace into a flue gas combustion device for secondary combustion; introducing the flue gas after secondary combustion into a flue gas purification device for purification; wherein the flue gas introduced into the flue gas combustion device for combustion is introduced from the upper end of the garbage storage chamber, the upper end of the garbage drying chamber, and the upper end of the garbage pyrolysis chamber of the garbage pyrolysis and gasification furnace, respectively, and is introduced into the flue gas combustion device for mixed combustion with oxygen. The method of the present invention draws out flue gas from different positions of the garbage pyrolysis and gasification furnace, respectively, and then performs mixed combustion with oxygen in the garbage combustion device, which is conducive to high-temperature and efficient combustion of flue gas; and is conducive to the regulation of flue gas, thereby facilitating efficient treatment of garbage in the furnace.

Description

Technical Field

[0001] The invention relates to the technical field of garbage treatment, and in particular to a garbage pyrolysis and gasification treatment method. Background Art

[0002] With the continuous improvement of living standards, people's quality of life has been greatly developed accordingly. At the same time, the generation of domestic garbage is also increasing. The treatment of a large amount of urban and rural domestic garbage every day has become a difficult problem. One way is to landfill and bury domestic garbage in a landfill for centralized treatment. However, with the continuous shortage of land resources, the demand for landfills is increasing, and the landfill method is difficult to sustain. Moreover, landfilling is only a temporary treatment method and cannot eliminate garbage. It takes dozens or even hundreds of years for garbage to degrade on its own. At the same time, landfilling may also cause land pollution and cause water and soil pollution. Therefore, landfilling is not a good way to dispose of garbage. Another existing method of domestic waste treatment is to use a garbage pyrolysis gasification furnace (also known as a garbage high-temperature pyrolysis gasification furnace) for high-temperature combustion treatment. Through the drying, pyrolysis gasification and combustion of the garbage pyrolysis gasification furnace, the domestic waste is burned at high temperature to form ash and slag, which is then discharged. The discharged ash and slag are sorted and crushed and directly used as building filler. The dust is filtered and cleaned to directly separate small particles and sludge that can be used as fertilizer, thereby achieving the purpose of purification and resource utilization, and therefore has good prospects.

[0003] In the existing garbage thermal cracking, the flue gas is difficult to burn completely due to lack of oxygen and other reasons. If part of the unburned flue gas is directly discharged and purified, the processing cost is high and the difficulty is relatively large. Since there is enough combustible gas in these flue gases, a flue gas combustion device (or a secondary combustion chamber, or it may be led out and then led back to the combustion chamber for combustion) is often provided to introduce the flue gas into the flue gas combustion device through an induced draft fan, etc., to burn the flue gas to achieve secondary combustion of the flue gas. That is, the existing garbage pyrolysis and gasification treatment method is mainly to introduce the flue gas generated in the garbage pyrolysis and gasification furnace into the flue gas combustion device through a flue pipe, and oxygenate the flue gas for combustion, and then discharge it directly after combustion or discharge it after purification. This method has some shortcomings. For example, there are too few smoke outlets. Since there are multiple chambers in the garbage pyrolysis gasification furnace, only setting the smoke pipe at a certain position makes it difficult for the smoke to enter the smoke combustion device. On the other hand, since the smoke temperature and humidity of the storage chamber, drying chamber and pyrolysis chamber of the garbage pyrolysis gasification furnace are different, the smoke temperature in the garbage pyrolysis chamber is high and the humidity is low, while the smoke temperature in the garbage storage chamber and the garbage drying chamber is relatively low and the humidity is high. The smoke is mixed for a long time before burning, which makes it difficult for the smoke to burn, and the combustion is not clean and the efficiency is low. At the same time, the smoke is only drawn out from one chamber for combustion, and the smoke in the garbage pyrolysis gasification furnace cannot be regulated, which is not conducive to the combustion, pyrolysis and drying of the garbage in the garbage pyrolysis gasification furnace. Summary of the invention

[0004] In view of the above shortcomings, the present invention provides a garbage pyrolysis and gasification treatment method, which can solve the problems of difficulty in flue gas treatment and flue gas regulation when a garbage pyrolysis and gasification furnace is used for garbage treatment.

[0005] In order to achieve the above object, the present invention adopts the following technical scheme:

[0006] A method for treating garbage by pyrolysis and gasification, using a garbage pyrolysis and gasification treatment device, wherein the garbage pyrolysis and gasification treatment device is connected and arranged in the order of flue gas circulation, and comprises a garbage pyrolysis and gasification furnace, a flue gas combustion device, a flue gas purification device, an air induction device and an exhaust device, and comprises the following steps:

[0007] The garbage is put into the garbage pyrolysis gasification furnace for storage, drying, pyrolysis gasification and combustion treatment;

[0008] The flue gas from the garbage pyrolysis gasification furnace is introduced into the flue gas combustion device for secondary combustion;

[0009] Introducing the flue gas after secondary combustion into a flue gas purification device for purification;

[0010] Among them, the flue gas introduced into the flue gas combustion device for combustion is introduced from the upper end of the garbage storage chamber, the upper end of the garbage drying chamber, and the upper end of the garbage pyrolysis chamber of the garbage pyrolysis gasification furnace, and is introduced into the flue gas combustion device together with oxygen for mixed combustion.

[0011] Furthermore, the flue gas introduced from the upper end of the garbage storage chamber and the upper end of the garbage drying chamber of the garbage pyrolysis gasification furnace is first introduced into the flue gas chamber 2, and the flue gas introduced from the upper end of the garbage pyrolysis chamber of the garbage pyrolysis gasification furnace is first introduced into the flue gas chamber 1, and then the flue gas in the flue gas chamber 1 and the flue gas in the flue gas chamber 2 enter the flue gas combustion chamber of the flue gas combustion device together for mixed combustion.

[0012] Furthermore, the flue gas introduced from the garbage storage chamber and the garbage drying chamber of the garbage pyrolysis gasification furnace is first condensed and dehydrated before entering the flue gas combustion device for mixed combustion with oxygen.

[0013] Furthermore, the flue gas combustion device includes a flue gas combustion chamber, a flue gas pipe 1, a flue gas pipe 2 and a flue gas pipe 3, wherein the flue gas pipe 1 is connected to the upper end of the garbage pyrolysis chamber, the flue gas pipe 2 is connected to the upper end of the garbage drying chamber, and the flue gas pipe 3 is connected to the upper end of the garbage storage chamber. The flue gas pipe 1, the flue gas pipe 2 and the flue gas pipe 3 are respectively provided with regulating valves for regulating the flow of flue gas; the bottom of the flue gas combustion chamber is provided with a flue gas cavity, an oxygen distribution cavity and a dust cavity, wherein the dust cavity is located at the bottom center of the flue gas combustion chamber, and the oxygen distribution cavity and the flue gas cavity are respectively provided with regulating valves for regulating the flow of flue gas. The dust chamber is concentrically sleeved from the inside to the outside in sequence, the dust chamber is a cylindrical chamber structure, a sealing flange cover that can be opened and closed is arranged at the bottom, and the top is open and connected to the inside of the smoke combustion chamber. The smoke chamber and the oxygen distribution chamber are annular cylindrical chamber structures, and the smoke chamber is separated into smoke chamber one and smoke chamber two by a smoke chamber partition. The tops of the oxygen distribution chamber, smoke chamber one and smoke chamber two are connected to the inside of the smoke combustion chamber, smoke pipe one is connected to smoke chamber one, and smoke pipe two and smoke pipe three are connected to smoke chamber two.

[0014] Furthermore, a smoke disperser is provided at the top of the smoke cavity to communicate with the interior of the smoke combustion chamber, and the smoke disperser includes a plurality of smoke dispersion pipes distributed around a circle, the lower portion of the smoke dispersion pipe is upright, and the upper portion is inclined at an elevation angle of 30° to 60°, and the vertical projection of the upper tail end of each of the smoke dispersion pipes is located on a tangent line of the circle where the smoke dispersion pipe is located, and the upper tail ends of the plurality of smoke dispersion pipes distributed around the circle are all distributed clockwise or counterclockwise at the same time;

[0015] A flue gas disperser is arranged on the top of the oxygen distribution chamber to communicate with the interior of the flue gas combustion chamber. The oxygen disperser includes a plurality of oxygen dispersion tubes distributed around a circle. The lower portion of the oxygen dispersion tubes is arranged upright, and the upper portion is inclined at an elevation angle of 30° to 60°. The vertical projection of the upper tail end of each of the oxygen dispersion tubes is located on the tangent line of the circle where the oxygen dispersion tube is located, and the upper tail ends of the plurality of oxygen dispersion tubes distributed around the circle are all oriented clockwise or counterclockwise at the same time.

[0016] Furthermore, an air inlet surround portion surrounding the garbage pyrolysis gasification furnace is arranged at the ends of the flue gas pipe one, the flue gas pipe two and the flue gas pipe three connected to the garbage pyrolysis gasification furnace, and a plurality of air inlet holes connected to the interior of the garbage pyrolysis gasification furnace are opened on the inner circumference of the air inlet surround portion; each of the air inlet surround portions is respectively provided with a flue gas branch pipe connected to the air inlet surround portion on two opposite sides, and the two flue gas branch pipes are symmetrically arranged and merged to connect to the flue pipe one, the flue pipe two or the flue pipe three.

[0017] Furthermore, the flue gas pipe 2 and the flue gas pipe 3 are equipped with a condensation and dehydration device for realizing condensation and dehydration of flue gas, the condensation and dehydration device includes a cylinder, a collecting chamber is arranged at the upper part of the cylinder, condensation inlet 1 and condensation inlet 2 are arranged at the top of the collecting chamber, a circulating water chamber is arranged in the middle part of the cylinder, a sewage chamber is arranged at the lower part of the cylinder, a plurality of condensation unit smoke pipes passing through the circulating water chamber are connected between the collecting chamber and the sewage chamber, the collecting chamber is connected with the flue gas pipe 2 through the condensation inlet 1, so that the smoke can enter the collecting chamber from the front smoke pipe 2 and pass through the condensation unit smoke pipe and the sewage chamber in sequence and enter the smoke chamber 2 after going out of the sewage chamber, the collecting chamber is connected with the smoke pipe 3 through the condensation inlet 2, so that the smoke can enter the collecting chamber from the front smoke pipe 3 and pass through the condensation unit smoke pipe and the sewage chamber in sequence and enter the smoke chamber 2 after going out of the sewage chamber.

[0018] Furthermore, a slag receiving and ash discharging device is arranged directly below the garbage combustion chamber, and the slag receiving and ash discharging device includes a slag receiving chamber and an ash discharging chamber, wherein the garbage combustion chamber is an elliptical cylindrical structure, the slag receiving chamber is an inverted quadrangular pyramid chamber shape with a rectangular bottom and top surface, and the ash discharging chamber is a rectangular parallelepiped chamber shape; at least one vertically arranged slag receiving chamber partition is arranged in the slag receiving chamber to divide the slag receiving chamber into more than two slag receiving bins arranged side by side in a transverse manner, and the bottom surface opening of each slag receiving bin is a rectangular shape that is consistent with the bottom opening of the garbage combustion chamber. The bottom opening of the garbage combustion chamber is connected to the slag chamber, and the projection area of ​​the vertical projection of the elliptical cylindrical bottom opening to the top opening of each slag bin is equal; the ash discharge chamber is provided with upright ash discharge chamber partitions whose number is the same as the slag chamber partitions to divide the ash discharge chamber into ash discharge bins which are horizontally arranged side by side and whose number is the same as the slag bins, and the top surface of the ash discharge chamber partition corresponds to the bottom surface of the slag chamber partition one by one; the ash discharge bin is a rectangular chamber structure with the same shape, and a spiral slag discharger is provided in the ash discharge bin for uniformly discharging the ash in each ash discharge bin.

[0019] Furthermore, the flue gas purification device includes a flue gas purification chamber, a flue gas dispersion chamber and a flue gas spray chamber. A flue gas dispersion chamber is arranged on the top of one end of the flue gas purification chamber, and a flue gas spray chamber is arranged on the top of the other end. A flue gas purification inlet is arranged on the top of the flue gas dispersion chamber, and the bottom is connected with the flue gas purification chamber through multiple flue gas dispersion outlets. The bottom of the flue gas spray chamber is connected with the top of the flue gas purification chamber, a flue gas purification outlet is arranged on the top of the flue gas spray chamber, and a flue gas spray pipe is arranged on the upper part of the flue gas spray chamber; an L-shaped pipe is arranged in the flue gas purification chamber, and the L-shaped pipe is located below the flue gas spray chamber, the upright part of the L-shaped pipe opens upward, and the horizontal part passes through the flue gas purification chamber.

[0020] Furthermore, a smoke diversion chamber is arranged on the top of the middle part of the smoke purification chamber, and the bottom of the smoke diversion chamber is connected to the smoke purification chamber through a smoke diversion inlet at a position close to the smoke dispersion chamber, and the bottom of the smoke diversion chamber is connected to the smoke purification chamber through a smoke diversion outlet at a position away from the smoke dispersion chamber. A smoke baffle is arranged in the smoke purification chamber, and the smoke baffle is located between the smoke diversion inlet and the smoke diversion outlet. The smoke baffle is arranged vertically downward from the top of the smoke purification chamber to block the smoke from passing there.

[0021] Furthermore, a plurality of smoke dispersion straight tubes are arranged at the bottom of the smoke dispersion chamber, and the smoke dispersion straight tubes are downwardly penetrated into the smoke purification chamber to form a smoke dispersion outlet; a plurality of smoke diversion straight tubes are arranged at the bottom of the smoke diversion chamber, and the smoke diversion straight tubes are downwardly penetrated into the smoke purification chamber to form a smoke diversion inlet; a plurality of side dispersion openings penetrating the side wall are circumferentially opened at the bottom side wall of each of the smoke dispersion straight tubes and each of the smoke diversion straight tubes, and the side dispersion openings extend to the bottom end of the smoke dispersion straight tube or the smoke diversion straight tube.

[0022] Furthermore, a smoke fence is arranged downward from the top of the smoke purification chamber, and the smoke fence is located behind the smoke dispersion straight pipe and the smoke diversion straight pipe in the smoke flow direction; the smoke fence includes multiple rows of vertically arranged rods arranged in parallel for cutting smoke bubbles, and the multiple rows of rods are staggered.

[0023] Furthermore, an oil purification chamber is arranged beside the flue gas purification chamber, the transverse part of the L-shaped tube passes through the flue gas purification chamber and is connected to the oil purification chamber, a flue gas reflux pipe is arranged on the top of the oil purification chamber and is connected to the flue gas spray chamber, the bottom of the oil purification chamber is a conical funnel-shaped structure with a larger top and a smaller bottom, and a sewage discharge pipe is arranged at the bottom of the oil purification chamber; an oil discharge pipe is arranged on the side wall of the middle and upper half of the oil purification chamber;

[0024] A purification solution chamber is arranged beside the oil purification chamber; a connecting pipe is arranged in the middle and lower part of the purification solution chamber to communicate with the oil purification chamber so that the oil and sewage in the smoke spray chamber overflow into the oil purification chamber for purification and then enter the purification solution chamber; a sewage oil pipe is arranged on the side wall of the middle and upper part of the purification solution chamber, a purification solution output pipe is arranged on the side wall of the lower part of the purification solution chamber, a sprayer is arranged on the purification solution output pipe and connected to the smoke spray pipe, and a smoke reflux pipe is arranged on the top of the purification solution chamber to communicate with the smoke spray chamber.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention provides a garbage pyrolysis and gasification treatment method, which facilitates the combustion of the flue gas by respectively drawing out the flue gas from the garbage pyrolysis chamber, the garbage drying chamber and the garbage storage chamber of the garbage pyrolysis and gasification furnace, and then performing oxygen-matched mixed combustion in the garbage combustion device, thereby facilitating the combustion of the flue gas, maintaining the flue gas combustion temperature at a stable high temperature, and basically burning out toxic and harmful gases such as dioxins, effectively ensuring that the flue gas meets the clean emission standards; multi-channel flue gas drawing can help to adjust various flue gases during flue gas combustion to help achieve efficient and clean combustion, and at the same time help to adjust and control the garbage combustion, pyrolysis and drying of the garbage combustion chamber, the garbage pyrolysis chamber, the garbage drying chamber and the garbage storage chamber of the garbage pyrolysis and gasification furnace, thereby facilitating the efficient treatment of garbage in the furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below.

[0027] Figure 1 It is a structural schematic diagram of the garbage pyrolysis and gasification processing equipment of the present invention;

[0028] Figure 2 It is a schematic diagram of the structure of the garbage pyrolysis gasification furnace and the flue gas combustion device in the present invention;

[0029] Figure 3 This is a schematic diagram of the partial structure of the slag receiving and ash discharging device of the present invention from one viewing angle (the top is completely hollowed out);

[0030] Figure 4 This is a schematic diagram of the partial structure of the slag receiving and ash discharging device of the present invention from another perspective (the top is completely hollowed out);

[0031] Figure 5 It is a cross-sectional schematic diagram of the slag receiving chamber and the ash discharging chamber in the present invention;

[0032] Figure 6 It is a structural schematic diagram of the smoke combustion device in the present invention;

[0033] Figure 7 It is a partial cross-sectional schematic diagram of a smoke chamber, an oxygen distribution chamber and a dust chamber in a smoke combustion device;

[0034] Figure 8 It is a cross-sectional schematic diagram of a smoke chamber, an oxygen distribution chamber and a dust chamber in a smoke combustion device;

[0035] Fig. 9 It is a structural schematic diagram of a condensation and dehydration device of a flue gas combustion device;

[0036] Fig.10 It is a structural schematic diagram of the rapid cooling device in the present invention;

[0037] Fig.11 It is a structural schematic diagram of the flue gas purification device in the present invention;

[0038] Fig.12 It is a schematic diagram of the structure of the smoke dispersion straight pipe in the present invention;

[0039] Fig.13 It is a schematic diagram of the structure of the smoke fence in the present invention.

[0040] Among them, the marks shown in the figure are: 10-furnace body; 11-garbage drying chamber; 12-garbage pyrolysis chamber; 13-garbage combustion chamber; 14-garbage storage chamber; 15-isolation door; 16-slide rail; 17-garbage feeding port; 18-furnace top cover; 19-feeding platform; 21-oxygen distribution blower; 22-oxygen supply pipe; 30-spray tower; 40-draft device; 50-smoke combustion chamber; 503-smoke heat exchange pipe; 504-smoke outlet; 505-heat exchange chamber; 51-smoke pipe one; 52-smoke pipe two; 53-smoke pipe three; 54-smoke cavity; 541-smoke cavity one; 542-smoke chamber 2; 543-smoke dispersion pipe; 544-smoke chamber partition; 55-oxygen distribution chamber; 551-oxygen dispersion pipe; 56-dust chamber; 561-sealing flange cover; 57-condensation dehydration device; 571-cylinder; 572-collection chamber; 573-condensation inlet 1; 574-condensation inlet 2; 575-circulating water chamber; 576-sewage chamber; 577-condensation unit smoke pipe; 58-smoke collection chamber; 59-oxygen heating chamber; 591-oxygen input port; 592-oxygen output port; 510-air inlet surround; 512-smoke branch pipe; 513-regulating valve ;521-Flue gas collection tank;61-Slag chamber;62-Slag chamber vertical plate;63-Slag bin;64-Spiral slag discharger;65-Ash slag conveyor;66-Semicircular trough;68-Ash chamber;69Ash chamber vertical plate;610-Ash bin;71-Flue gas purification chamber;713-Flue gas baffle;714-Flue gas fence;74-Flue gas diversion chamber;741-Flue gas diversion inlet;742-Flue gas diversion straight pipe;715-Drain pipe;72-Flue gas dispersion chamber;723-Flue gas dispersion straight pipe;73-Flue gas purification inlet;75-Flue gas spray chamber;751-Flue gas spray pipe;752- Splitting blades; 753-L-shaped pipe; 76-flue gas purification outlet; 77-oil purification chamber; 771-flue gas return pipe; 772-sewage pipe; 773-sewage oil pipe; 79-purification solution chamber; 791-purification solution output pipe; 793-connecting pipe; 701-side dispersion port; 710-liquid filling port; 90-quenching and cooling device; 91-quenching and cooling device cylinder; 92-quenching and cooling device circulating water chamber; 93-quenching and cooling device collecting chamber; 94-quenching and cooling device water storage tank; 95-quenching and cooling device unit smoke pipe; 97-flue gas heating chamber; 100-discharge device. DETAILED DESCRIPTION

[0041] The technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments. Based on the embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] The preferred embodiment provides a method for treating waste by pyrolysis and gasification, using waste pyrolysis and gasification equipment, wherein the waste pyrolysis and gasification equipment is connected and arranged in the order of flue gas flow, and comprises a waste pyrolysis and gasification furnace, a flue gas combustion device, a flue gas purification device, an air induction device and an exhaust device, and comprises the following steps:

[0043] The garbage is put into the garbage pyrolysis gasification furnace for storage, drying, pyrolysis gasification and combustion treatment;

[0044] The flue gas from the garbage pyrolysis gasification furnace is introduced into the flue gas combustion device for secondary combustion;

[0045] Introducing the flue gas after secondary combustion into a flue gas purification device for purification;

[0046] Among them, the flue gas introduced into the flue gas combustion device for combustion is introduced from the upper end of the garbage storage chamber, the upper end of the garbage drying chamber, and the upper end of the garbage pyrolysis chamber of the garbage pyrolysis gasification furnace, and is introduced into the flue gas combustion device together with oxygen for mixed combustion.

[0047] The garbage pyrolysis and gasification method of the present invention is provided with flue gas respectively drawn from the garbage pyrolysis chamber, the garbage drying chamber and the garbage storage chamber of the garbage pyrolysis and gasification furnace into the flue gas combustion device for combustion, so that high-temperature dry flue gas and low-temperature moist flue gas are mixed and burned in the flue gas combustion chamber. After ignition, the flue gas and excess oxygen are completely burned. The combustion temperature of the flue gas combustion chamber 50 exceeds 1100°C and can reach 1400°C at the highest. The combustion is stable, clean and efficient. Toxic and harmful gases such as dioxins are basically burned out, effectively ensuring that the flue gas meets the clean emission standards. At the same time, the amount of flue gas generated in the garbage combustion chamber that rises to the flue gas pipes at the upper ends of the garbage pyrolysis chamber, garbage drying chamber and garbage storage chamber can be more accurately adjusted and controlled, so that the high-temperature combustion of garbage, the pyrolysis gasification of garbage and the dehydration and drying of garbage can be more efficient and effective; and the flue gases with different temperatures, different oxygen contents and different water contents in different chambers are respectively led out through the flue gas pipes to the flue gas combustion device for combustion, which is beneficial to the next step of combustion and purification of the flue gas, and helps to regulate and control the combustion, pyrolysis and drying of garbage in the garbage combustion chamber, garbage pyrolysis chamber, garbage drying chamber and garbage storage chamber of the garbage pyrolysis gasification furnace, thereby improving the overall efficiency of garbage pyrolysis gasification and more efficient and clean treatment of flue gas.

[0048] Among them, the flue gas introduced from the upper end of the garbage storage chamber and the upper end of the garbage drying chamber of the garbage pyrolysis gasification furnace is first introduced into the flue gas chamber 2, and the flue gas introduced from the upper end of the garbage pyrolysis chamber of the garbage pyrolysis gasification furnace is first introduced into the flue gas chamber 1, and then the flue gas in the flue gas chamber 1 and the flue gas in the flue gas chamber 2 enter the flue gas combustion chamber of the flue gas combustion device for mixed combustion. In the existing method, because the flue gas is introduced through only one flue gas pipe, the flue gas with high temperature and low humidity in the pyrolysis chamber is mixed with the flue gas with relatively low temperature and relatively high humidity in the storage chamber and the drying chamber early, making it difficult for the flue gas entering the flue gas combustion device to burn, with low temperature and low efficiency, which is not conducive to complete combustion. The method of the present invention, by setting the flue gas chamber 1 and the flue gas chamber 2, firstly draws the flue gas from the garbage storage chamber, the garbage drying chamber and the garbage pyrolysis chamber respectively, and first temporarily concentrates them in the flue gas chamber 1 and the flue gas chamber 2, and then enters the flue gas combustion chamber of the flue gas combustion device for mixed combustion with oxygen, which is conducive to the efficient combustion of the flue gas.

[0049] Furthermore, the flue gas introduced from the garbage storage chamber and the garbage drying chamber of the garbage pyrolysis gasification furnace is first condensed and dehydrated before entering the flue gas combustion device for mixed combustion with oxygen. Since the flue gas introduced from the garbage storage chamber and the garbage drying chamber is independent of the flue gas introduced from the garbage pyrolysis chamber, it is more necessary and more convenient to condense and dehydrate the flue gas with relatively low temperature and relatively high humidity to help the flue gas introduced there to burn more efficiently.

[0050] This preferred embodiment provides a garbage pyrolysis gasification treatment equipment, please refer to Figure 1 The garbage pyrolysis and gasification treatment equipment is connected and arranged in the order of flue gas flow. It mainly includes a garbage pyrolysis and gasification furnace, a flue gas combustion device, a flue gas purification device, an induced draft device 40 and an exhaust device 100.

[0051] Please refer to Figure 1 and Figure 2The garbage pyrolysis gasification furnace includes a furnace body 10. The furnace body 10 is an elliptical cylindrical structure arranged vertically as a whole. The elliptical cylindrical furnace body 10 can effectively reduce welding points, thereby avoiding and reducing the probability of water leakage. A garbage storage chamber 14, a garbage drying chamber 11, a garbage pyrolysis chamber 12 and a garbage combustion chamber 13 are arranged vertically in the furnace body 10 from top to bottom. The furnace body 10 is provided with a water cooling layer surrounding the furnace wall at the furnace walls corresponding to the garbage drying chamber 11, the garbage pyrolysis chamber 12 and the garbage combustion chamber 13. Circulating water is introduced into the water cooling layer to cool the furnace wall to prevent the furnace wall from melting at high temperature. The water used for cooling in the water cooling layer has a certain temperature when it is drawn out, which can be used for bathing or heating, etc., to realize the resource utilization of garbage treatment. The water cooling layer of the elliptical cylindrical furnace body 10 at the furnace wall is a double-layer water cooling structure, and the inner layer of the garbage combustion chamber 13 is further provided with a refractory layer structure, which is located at the innermost side. The refractory layer structure is provided in the inner layer of the garbage combustion chamber 13 so that the temperature of the garbage burning in the furnace wall does not drop sharply due to water cooling, and the furnace body is prevented from directly contacting the high temperature of garbage combustion to achieve the purpose of durability. A furnace door is provided on the two opposite sides of the lower part of the garbage combustion chamber 13.

[0052] An isolation door 15 is provided between the garbage drying chamber 11 and the garbage storage chamber 14 for temporarily isolating the garbage drying chamber 11 from the garbage storage chamber 14. The garbage storage chamber 14 is used to store garbage to be burned. During implementation, the isolation door 15 is closed to isolate the garbage drying chamber 11 from the garbage storage chamber 14, and then the garbage is stored in the garbage storage chamber 14 for further processing. When the garbage needs to be processed, the isolation door 15 is opened to allow the garbage to fall downward into the garbage drying chamber 11 to achieve garbage drying. The garbage storage chamber 14 can achieve many effects. First, it can temporarily store garbage, so that garbage transported from various places can be temporarily stored in the garbage storage chamber 14 without setting up an additional storage location, and can preferably solve the problem of seepage of the garbage to be processed, so that the garbage seepage can directly seep into the garbage drying chamber 11 below, avoiding the generation of garbage odor and garbage seepage polluting the environment; second, it can ensure safety. For example, when garbage is thrown in, if there is no garbage storage chamber 14, if some personnel or some equipment accidentally fall into the garbage high-temperature cracking gasification furnace, then due to the high temperature in the high-temperature gasification furnace, there is basically no opportunity and possibility for rescue. Now that the garbage storage chamber 14 is set, when the garbage is thrown in, since it is pre-thrown in the garbage storage chamber 14 and the temperature of the garbage storage chamber 14 is relatively low, an environment and possibility for rescue are provided. That is, setting the garbage storage chamber 14 also has safety considerations. In this preferred embodiment, a horizontally arranged slide rail 16 is provided at the junction of the garbage storage chamber 14 and the garbage drying chamber 11, and the isolation door 15 is slidably installed on the slide rail 16. The isolation door 15 is in the form of two door panels arranged opposite to each other, and the door panels are driven by hydraulic pressure. When the two door panels move toward each other and contact, the isolation door 15 is closed. At this time, the garbage drying chamber 11 and the garbage storage chamber 14 are temporarily isolated. When the two door panels move in opposite directions, the isolation door 15 is opened. At this time, the garbage drying chamber 11 and the garbage storage chamber 14 are temporarily connected, and the garbage temporarily stored in the garbage storage chamber 14 falls into the garbage drying chamber 11 by its own gravity. The garbage is gradually dehydrated and dried due to the large amount of high-temperature compounds and high-temperature water vapor generated by the carbonization and cracking of the lower layer (performed in the garbage pyrolysis chamber 12). The garbage storage chamber 14 is arranged directly above the garbage drying chamber 11, so that the garbage can fall into the garbage drying chamber 11 by gravity. In this preferred embodiment, a garbage feed port 17 is provided at the top of the garbage storage chamber 14, and a furnace top cover 18 for temporarily closing the garbage feed port 17 is provided. The furnace top cover 18 is driven by an electric rod, one side of which is rotatably connected to the edge of the garbage feed port 17, and the other side is connected to the electric rod. The furnace top cover 18 can be controlled by the electric rod, that is, the opening and closing of the garbage feed port 17 can be achieved. For example, when the furnace top cover 18 is driven to block the garbage feed port 17, the garbage feed port 17 can be temporarily closed.A feeding platform 19 is provided on the top of the high-temperature gasification furnace. The feeding platform 19 is located above the garbage storage chamber 14. The garbage is transported to the feeding platform 19 by the garbage transfer vehicle, and then the furnace top cover 18 is opened to open the garbage feed port 17. At the same time, the isolation door 15 is closed. No other facilities or manual auxiliary transportation are required to achieve the goal of not letting the garbage fall to the ground. The whole truckload of garbage is directly poured into the garbage storage chamber 14 in batches, and then the furnace top cover 18 is closed. The garbage is put into the furnace simply, safely and quickly, effectively avoiding the generation and pollution of garbage odor and garbage leachate. Through the above-mentioned settings, the garbage pyrolysis gasification furnace optimizes the garbage treatment process, so that the garbage does not need to be retained in the factory, sorted again, crushed, filtered, dried and other pre-treatments, so that the garbage does not fall to the ground, and the whole truckload of garbage is directly poured into the furnace for treatment, which not only reduces the risk of garbage treatment polluting the environment, but also reduces the cost of garbage treatment.

[0053] Please refer to Figures 1 to 5 , the slag receiving and ash discharging device is used to solve the ash falling and ash discharging problems of the garbage pyrolysis gasification furnace to achieve uniform ash falling and uniform ash discharging. The slag receiving and ash discharging device is located directly below the garbage combustion chamber 13. The slag receiving and ash discharging device includes a slag receiving chamber 61 and an ash discharging chamber 68 which are sequentially distributed from top to bottom, wherein the slag receiving chamber 61 is in the shape of an inverted tetrahedral chamber with a rectangular bottom and top, and the ash discharging chamber 68 is in the shape of a rectangular parallelepiped chamber; two vertically arranged slag receiving chamber partitions 62 are arranged in the slag receiving chamber 61 to divide the slag receiving chamber 61 into three slag receiving bins 63 arranged side by side laterally, and the bottom opening of each slag receiving bin 63 is a rectangular shape with the same shape, and the bottom opening of the garbage combustion chamber 13 is directly connected to the slag receiving chamber 61, and the bottom opening of the elliptical cylindrical garbage combustion chamber 13 is vertically projected to each slag receiving bin 6 3 has an equal projected area of ​​the top opening; the ash discharge chamber 68 is provided with an ash discharge chamber partition 69 which is arranged vertically and the same number as the slag chamber partition 62 to divide the ash discharge chamber 68 into ash discharge bins 610 which are arranged horizontally and the same number as the slag chamber 63, and the top surface of the ash discharge chamber partition 69 corresponds to the bottom surface of the slag chamber partition 62 one by one. At this time, the ash discharge bins 610 correspond to the slag chamber 63 one by one, and the ash discharge bins 610 are rectangular chamber structures with the same shape. The ash discharge bins 610 are provided with spiral slag dischargers 64 of the same type for uniformly discharging the ash and slag in each of the ash discharge bins 610.

[0054] The existing garbage pyrolysis gasification furnace mainly realizes ash discharge by arranging crawler grates, horizontal pushers, spiral pushers or self-weight drop components at the bottom of the combustion chamber. These components directly act on the bottom of the combustion chamber of the garbage high-temperature cracking gasification furnace. Since the existing combustion chamber is mainly cylindrical, the ash discharge at various positions is uneven when the ash is discharged, which makes the garbage at various positions in the garbage high-temperature cracking gasification furnace fall unevenly, thereby causing uneven combustion of the garbage in the high-temperature gasification furnace, affecting the garbage combustion efficiency and effect.

[0055] In the present invention, the top of the slag chamber 61 is directly connected to the bottom of the garbage combustion chamber 13, and no partition is set to allow the ash produced by the combustion of the garbage combustion chamber 13 to directly enter the slag chamber 61. The garbage combustion chamber 13 of the present invention is an elliptical cylindrical structure. Since the elliptical cylindrical garbage combustion chamber 13 has a long side, the internal volume of the elliptical cylindrical garbage combustion chamber 13 is larger and can accommodate more garbage, thereby improving the efficiency of garbage disposal. It can be understood that when the major axis radius of the ellipse is equal to the minor axis radius, the garbage combustion chamber 13 is a cylindrical structure, which can still achieve the effect of the present invention. Therefore, the garbage combustion chamber 13 with a cylindrical structure is a special form of the garbage combustion chamber 13 of the present invention and should not be excluded. The projection area of ​​the bottom opening of the elliptical cylindrical garbage combustion chamber 13 vertically projected onto the top opening of each slag bin 63 of the slag chamber 61 is equal. According to Zu's principle, two solids of the same height have equal volumes if their cross-sectional areas at the same height are equal. Therefore, the volumes of ash distributed above the top openings of each slag bin 63 are equal, so that the volumes of ash that fall from the bottom of the garbage combustion chamber 13 into each slag bin 63 are equal.

[0056] In a preferred embodiment, the bottom area of ​​the elliptical cylindrical garbage combustion chamber 13 is equal to the bottom area of ​​the slag chamber 61 and the bottom area of ​​the ash discharge chamber 68; the top area of ​​the slag chamber 61 is larger than the bottom area of ​​the elliptical cylindrical garbage combustion chamber 14. The four bottom sides of the rectangular bottom surface of the inverted quadrangular pyramid-shaped slag chamber 61, two of which are parallel to the long axis of the bottom ellipse of the elliptical cylindrical garbage combustion chamber 13, and the other two bottom sides are parallel to the short axis of the bottom ellipse of the elliptical cylindrical garbage combustion chamber 13; the long side length of the long-sided top surface of the inverted quadrangular pyramid-shaped slag chamber 61 is equal to the long axis length of the elliptical bottom surface of the garbage combustion chamber 13, and the short ... The length is equal to the short axis length of the elliptical bottom surface of the garbage combustion chamber 13; the garbage combustion chamber 13 is arranged opposite to the slag chamber 61 and the ash discharge chamber 68. Specifically, the intersection of the long axis and the short axis of the elliptical bottom surface of the elliptical cylindrical garbage combustion chamber 14, the intersection of the diagonal of the upper top surface rectangle of the slag chamber 61 and the intersection of the diagonal of the lower bottom surface rectangle of the slag chamber 61, and the intersection of the diagonal of the bottom surface rectangle of the ash discharge chamber 68 are on the same vertical line.

[0057] The area of ​​the bottom opening of the garbage combustion chamber 13 vertically projected to the top opening of each slag bin 63 is equal, so the amount of ash generated by the garbage combustion chamber 13 entering each slag bin 63 is basically the same. Since the ash discharge chamber 68 is provided with ash discharge bins 610 arranged horizontally and side by side in the same number as the slag bins 63, and the top surface of the ash discharge chamber partition 69 corresponds one-to-one to the bottom surface of the slag chamber partition 62, at this time, each ash discharge bin 610 is a narrow and long rectangular chamber structure with the same structure. A spiral slag discharger 64 is provided at the bottom of each ash discharge bin 610 for discharging the ash in each ash discharge bin 610. The spiral slag discharger 64 discharges the ash in each ash discharge bin 610. Each ash discharge bin 610 is opposed to each other and does not affect each other under the separation of the ash discharge chamber partition 69. Therefore, when the ash discharge rates of the spiral slag dischargers 64 in each ash discharge bin 610 are the same, the ash falling and ash discharge of each ash discharge bin 610 are uniform. are consistent, so uniform ash discharge and ash falling can be achieved, and then uniform combustion of garbage in the high-temperature gasification furnace can be achieved, and the garbage in the high-temperature gasification furnace can be further kept falling in equal amounts and evenly, and automatically dried, carbonized, cracked and burned in turn to ensure the efficiency and effect of garbage combustion; since the ash discharge chamber 68 is in the form of a rectangular chamber as a whole, the ash discharge chamber partition 69 separates a plurality of ash discharge bins 610 to form a plurality of separate, narrow ash discharge bins 610, and the narrow ash discharge bins 610 can form a square structure at the bottom of the ash discharge bin 610, which is more compatible with the working form of the spiral slag discharger 64, and is more conducive to slag discharge and ash discharge; at the same time, the slag receiving chamber 61 and the ash discharge chamber 68 are provided, which can be conducive to the gradual cooling of the ash in the slag receiving chamber 61 and the ash discharge chamber 68, so that the ash has a cooling process, and the temperature is relatively low when discharged, so that it is not easy to scald the related components of the subsequent ash treatment. When the spiral slag discharging machine 64 in the ash discharging bin 610 discharges ash, it will not affect the adjacent ash discharging bin 64, and will have little effect on the garbage combustion in the garbage combustion chamber 13. The garbage combustion chamber 13 maintains normal combustion when discharging ash. Due to the uniform ash discharge and uniform ash falling of the garbage pyrolysis gasification furnace, the garbage pyrolysis gasification furnace is uniformly dried, pyrolyzed, gasified and burned in sequence, so that the temperature in the furnace is stabilized at a high temperature above 850°C, which improves the efficiency of garbage treatment and ensures the effect of garbage treatment.

[0058] During implementation, when the spiral slag discharger 64 discharges slag, due to the pressure of the upper garbage and the gravity of the garbage itself, as well as the combustion, pyrolysis, gasification and drying and dehydration of the garbage, the volume of the garbage is reduced, and the solid garbage burned out in the garbage combustion chamber 13 becomes ash and falls into the slag receiving bin 63 and then into the ash discharge bin 610, while the solid garbage in the garbage pyrolysis chamber, garbage drying chamber and garbage storage chamber above the garbage combustion chamber 13 moves downward in turn, and the unburned gaseous garbage rises to the garbage pyrolysis chamber, garbage drying chamber and garbage storage chamber due to the buoyancy of the induced draft fan and the gaseous garbage; the spiral slag discharger 64 discharges slag in small amounts and multiple times at intervals, so that the garbage in the garbage combustion chamber, garbage pyrolysis chamber, garbage drying chamber and garbage storage chamber can be more fully burned, pyrolyzed, gasified and dehydrated in a relatively static state.

[0059] In a preferred embodiment, an oxygen supply pipe 22 is arranged on the top of the slag chamber partition 62 and on the furnace wall of the garbage combustion chamber 13, and each oxygen supply pipe 22 is on the same horizontal plane. A plurality of oxygen outlets are arranged on the side of the oxygen supply pipe 22. The oxygen supply pipe 22 can adopt the oxygen supply pipe 22 of the existing garbage pyrolysis gasification furnace, but the oxygen supply pipe 22 of the present invention is arranged on the top of the slag chamber partition 62 and on the furnace wall of the garbage combustion chamber 13; the oxygen supply pipe 22 is used to supply oxygen to the garbage combustion chamber 76 from the bottom to the top; the oxygen supply pipe 22 is arranged on the top of the slag chamber partition 62 of the slag chamber 61, so that the ash after the garbage combustion passes through the oxygen supply area and then falls into the slag bin 63, so that the incompletely burned solid garbage continues to contact with oxygen and burns when it falls, and the newly burned slag is at a higher temperature. The oxygen passes through the high-temperature slag so that the oxygen is further heated and it is easier to burn with the garbage, so that the garbage burns more thoroughly. A cooling water pipe is welded below the oxygen supply pipe 22, and the cooling water pipe is closely connected to the slag chamber partition 62. The cooling water pipe cools down the oxygen supply pipe 22 to prevent the oxygen supply pipe 22 from melting under high temperature. The oxygen in the oxygen supply pipe 22 is blown into the garbage combustion chamber 13 through a pipeline by the oxygen distribution blower 21; a furnace door is set on the top of both ends of the slag chamber 63 between the two oxygen supply pipes 22 and the lower part of the garbage combustion chamber 13, which is used for ignition and observation of the combustion situation in the furnace, and cleaning some things that are difficult to burn or cannot be burned and are not convenient for the spiral slag discharger 64 to discharge.

[0060] A semicircular groove 66 is provided at the bottom of the ash discharge bin 610, and the two sides of the semicircular groove 66 are fitted with the two side walls of the bottom of the ash discharge bin 610. The semicircular groove 66 is located below the auger of the spiral slag discharger 64, and the extension direction is consistent with the extension direction of the auger of the spiral slag discharger 64, that is, consistent with the length direction of the ash discharge bin 610, and the semicircular groove 66 is a semicircular groove, and its inner diameter is about 1 cm larger than the auger diameter of the spiral slag discharger 64, so that under the action of the semicircular groove 66, the spiral slag discharger 64 can completely discharge the ash slag, avoiding that part of the ash slag is accumulated in the bottom dead corner of the ash discharge bin 610 and cannot be discharged by the spiral slag discharger 64, thereby achieving clean ash discharge. The spiral slag discharger 64 adopts a shaftless spiral spiral slag discharger, which is conducive to the smooth discharge of larger ash slag such as iron wire in the ash slag. In a preferred embodiment, an ash conveyor 65 is provided below the end of the spiral slag discharging machine 64, and the ash discharged by the spiral slag discharging machine 64 falls from the end of the spiral slag discharging machine 64 to the ash conveyor 65 and is then transported to a designated place for placement or treatment. The ash conveyor 65 preferably adopts a conveyor belt type conveyor, and the conveyor belt of the ash conveyor 65 is located directly below the end of each spiral slag discharging machine 64. The fallen ash is directly transported to a designated place for placement or treatment by the conveyor belt of the ash conveyor 65, which is convenient and efficient.

[0061] like Figure 1 , Figure 2 ,as well as Figures 6 to 9As shown, the smoke combustion device includes a smoke combustion chamber 50, in which an igniter is provided for ignition to realize smoke combustion, and a smoke outlet 504 is provided on the smoke combustion chamber 50 for discharging smoke after combustion, and the smoke outlet 504 can be connected to an induced draft fan when in use to help lead out the smoke after combustion. A smoke cavity 54, an oxygen distribution cavity 55 and a dust cavity 56 are provided at the bottom of the smoke combustion chamber 50. The smoke combustion chamber 50 is in the shape of a double-layer inverted truncated cone structure, and the truncated cone interlayer is a water-cooled layer, which is filled with circulating cooling water, and a fire-resistant layer is provided on the inner wall. The bottom chamber of the smoke combustion chamber 50 is a conical structure with a large top and a small bottom. The dust cavity 56 is located at the bottom center of the smoke combustion chamber 50, and the oxygen distribution cavity 55 and the smoke cavity 54 are concentrically arranged from the inside to the outside on the outer periphery of the dust cavity 56. The dust chamber 56 is a cylindrical chamber structure, which is hollow inside. A seal flange cover 561 that can be opened and closed is provided at the bottom so that the bottom of the dust chamber 56 is connected to the outside when the seal flange cover 561 is opened. The top of the dust chamber 56 is open and connected to the inside of the flue gas combustion chamber 50 so that some dust particles and impurities formed during flue gas combustion can temporarily accumulate in the dust chamber 56 when they fall downward. The flue gas chamber 54 and the oxygen distribution chamber 55 are annular cylindrical chamber structures. The flue gas chamber 54 is divided into a flue gas chamber 1 541 and a flue gas chamber 2 542 by a flue gas chamber partition 544. The flue gas chamber 1 541 and the flue gas chamber 2 542 occupy half of the flue gas chamber 54 respectively, that is, a semi-circular chamber structure separated from each other. The tops of the oxygen distribution 55, the flue gas chamber 1 541 and the flue gas chamber 2 542 are connected to the inside of the flue gas combustion chamber 50. The smoke chamber 1 541 and the smoke chamber 2 542 are respectively provided with a smoke inlet for introducing smoke of different temperatures, different oxygen contents and different moisture contents into the garbage pyrolysis gasification furnace. Specifically, the smoke chamber 1 541 is connected to the upper end of the garbage pyrolysis chamber 12 through the smoke inlet through the smoke pipe 1 51, so as to introduce smoke with higher temperature and lower oxygen and moisture contents from the garbage pyrolysis chamber 12; the smoke chamber 2 542 is connected to the upper end of the garbage drying chamber 11 through the smoke inlet through the smoke pipe 2 52, so as to introduce smoke with relatively higher temperature and relatively lower oxygen and moisture contents from the garbage drying chamber 11; the smoke chamber 2 542 is connected to the upper end of the garbage storage chamber 14 through the smoke inlet through the smoke pipe 3 53, so as to introduce smoke with lower temperature and lower oxygen and moisture contents from the garbage storage chamber 14. Regulating valves 513 for regulating the flow of flue gas can be provided on the flue pipe 1 51, the flue pipe 2 52 and the flue pipe 3 53 to assist the operation of the induced draft system for high-temperature pyrolysis and gasification of garbage, regulate and control the combustion, pyrolysis and drying of garbage in the garbage combustion chamber 13, the garbage pyrolysis chamber 12, the garbage drying chamber 11 and the garbage storage chamber 14 of the garbage pyrolysis and gasification furnace, and regulate and control the extraction of flue gas and the entry of flue gas into the flue gas combustion device for combustion.An air inlet surround portion 510 surrounding the furnace body 10 is arranged at the ends of the flue gas pipe 1 51, the flue gas pipe 2 52 and the flue gas pipe 3 53 connected to the furnace body 10. The air inlet surround portion 510 is attached to the outer side of the furnace body 10 and presents an elliptical ring structure. A plurality of evenly distributed air inlet through holes connected to the interior of the furnace body 10 (i.e., corresponding to the garbage pyrolysis chamber 12, the garbage drying chamber 11 and the garbage storage chamber 14) are provided on the inner circumference of the air inlet surround portion 510. By surrounding the garbage pyrolysis gasification furnace with an air inlet surround 510 and setting a plurality of evenly distributed air inlet holes, more and wider entrances to the smoke pipe 1 51, smoke pipe 2 52 and smoke pipe 3 53 are provided for the garbage drying chamber 11, garbage pyrolysis chamber 12 and garbage storage chamber 14 of the garbage pyrolysis gasification furnace, which can help the smoke from the drying chamber, pyrolysis chamber and storage chamber of the garbage pyrolysis gasification furnace to better enter the smoke pipe 1 51, smoke pipe 2 52 and smoke pipe 3 53, improve the efficiency of smoke entry, and help the combustion of smoke. Specifically, each air inlet surround 510 is respectively provided with a smoke branch pipe 512 connected to the air inlet surround 510 on two opposite sides, and the two smoke branch pipes 512 are symmetrically arranged and merged to connect the smoke pipe 1 51 or the smoke pipe 2 52 or the smoke pipe 3 53. The air inlet surrounding part 510 corresponding to the storage chamber is provided with a smoke branch pipe 512 connected to the air inlet surrounding part 510 on two opposite sides, and the two smoke branch pipes 512 are symmetrically arranged and have equal lengths. After merging, they are connected to the smoke pipe 3 53, so as to help the smoke in the storage chamber to enter the air inlet surrounding part 510 evenly; the air inlet surrounding part 510 corresponding to the drying chamber is provided with a smoke branch pipe 512 connected to the air inlet surrounding part 510 on two opposite sides, and the two smoke branch pipes 512 are symmetrically arranged and have equal lengths. After merging, they are connected to the smoke pipe 3 53, so as to help the smoke in the storage chamber to enter the air inlet surrounding part 510 evenly. The pipes 512 are symmetrically arranged with equal lengths, and are connected to the second flue gas pipe 52 after merging, so as to help the flue gas in the drying chamber to enter the air inlet surround 510 evenly; corresponding to the air inlet surround 510 of the pyrolysis chamber, a flue gas branch pipe 512 connected to the air inlet surround 510 is respectively arranged on the opposite sides, and the two flue gas branch pipes 512 are symmetrically arranged with equal lengths, and are connected to the first flue gas pipe 51 after merging, so as to help the flue gas in the pyrolysis chamber to enter the air inlet surround 510 evenly. A plurality of air inlet surrounds 510 are arranged on the garbage pyrolysis gasification furnace, so as to more accurately control the combustion of garbage in the furnace, the pyrolysis carbonization of garbage and the drying of garbage, and to respectively lead out flue gas of different temperatures, different oxygen contents and different moisture contents, which not only effectively improves the processing capacity of the garbage pyrolysis gasification furnace, but also facilitates the purification and combustion treatment of the flue gas in the next step, thereby ensuring the efficiency and effect of the pyrolysis gasification treatment of garbage.

[0062] During implementation, the garbage pyrolysis gasification furnace is equipped with an oxygen distribution blower 21 to introduce oxygen required for combustion into the garbage combustion chamber 13, and the garbage pyrolysis gasification treatment equipment is equipped with an induced draft device 40 to facilitate the introduction of flue gas into the flue gas combustion chamber 50 through the flue pipe 1 51, the flue pipe 2 52 and the flue pipe 3 53 for combustion. When the oxygen distribution blower 21 and the induced draft fan of the induced draft device 40 are turned on, since the oxygen distribution pipe of the garbage pyrolysis gasification furnace supplies oxygen upward from the bottom of the garbage combustion chamber 13, the garbage at the bottom of the garbage combustion chamber 14 is burned upward with oxygen; the ratio of the oxygen supply air volume to the induced draft volume is limited to the range of 0.3 to 0.4, at this time, the garbage at the bottom of the garbage combustion chamber 13 undergoes a fierce pyrolysis and gasification reaction, generating solid garbage carbon and a variety of gas, oil and other gaseous garbage that burn with oxygen; the garbage combustion temperature in the garbage combustion chamber 13 reaches about 1100°C, the highest temperature can reach above 1300°C, and the combustion tail gas reaches a temperature above 900°C.

[0063] Due to the buoyancy of the flue gas and the effect of the induced draft fan, the high-temperature flue gas from the garbage combustion chamber 13 has a temperature of up to 600°C to 900°C when it just rises to the garbage pyrolysis chamber 12 in the lower half of the furnace body; due to the limited oxygen supply, the garbage pyrolysis chamber 12 is in an oxygen-deficient state, and the garbage cannot burn. At this time, the garbage undergoes a relatively intense pyrolysis and carbonization reaction, such as molecular bond breaking, isomerization, small molecule polymerization, etc., to generate a variety of gases, oils and carbon; as the flue gas rises, the garbage undergoes pyrolysis and gasification reaction, and the high temperature of the flue gas decreases; when the flue gas reaches the upper half of the garbage pyrolysis chamber 12, due to the high temperature During the process of burning, the garbage undergoes a relatively rapid pyrolysis and gasification reaction, which makes the garbage form carbonized solid garbage and generates a variety of gases and gaseous garbage such as tar. At this time, due to the pyrolysis and gasification of the garbage and the combustion of the garbage, the volume of the lower garbage is reduced and ash is discharged. Under the action of gravity of the garbage at the upper part, the buoyancy of the flue gas and the action of the induced draft fan, the solid garbage moves downward, and the gaseous garbage flows upward with the flue gas. When the flue gas temperature is between 350°C and 450°C and the flue gas rises to the air inlet surround 510 at the upper end of the garbage pyrolysis chamber 12, part of the flue gas is drawn out from the air inlet surround 510 and enters the flue gas pipe 51.

[0064] Due to the buoyancy of the flue gas and the action of the induced draft fan, part of the flue gas rises to the garbage drying chamber 11, and the temperature of the flue gas from the air inlet surround 510 at the upper end of the garbage pyrolysis chamber to the air inlet surround 510 at the upper end of the garbage drying chamber 11 also reaches 250°C to 350°C. This temperature bakes the garbage in the garbage drying chamber 11, causing the garbage to dehydrate, shrink, and become hard, thereby achieving garbage drying. At this time, the garbage also undergoes partial pyrolysis and gasification reaction, mainly generating dry garbage, and generating part of gas, water vapor, tar, etc. At this time, part of the flue gas is drawn out from the air inlet surround 510 at the upper end of the garbage drying chamber 11 and enters the flue gas pipe 2 52.

[0065] After the garbage is fed in, the furnace top cover 18 is closed, the isolation door between the garbage drying chamber 11 and the garbage storage chamber 14 is opened, and the garbage drying chamber 11 and the garbage storage chamber 14 are in a connected state; due to the buoyancy of the flue gas and the action of the induced draft fan, part of the flue gas water vapor rises to the garbage storage chamber 14, and the garbage between the air inlet surround 510 at the upper end of the garbage drying chamber 11 and the air inlet surround 510 at the upper end of the garbage storage chamber 14 is also baked at a temperature of 150°C to 280°C, and the garbage is gradually dehydrated, and dry garbage is gradually generated, and part of the gas and tar are generated. At this time, the flue gas is drawn out from the air inlet surround 510 at the upper end of the garbage storage chamber 14 and enters the flue gas pipe three 53.

[0066] In the garbage pyrolysis gasification furnace 10, by setting a smoke chamber 1 541 and a smoke chamber 2 542, smoke is drawn out from the garbage pyrolysis chamber 12 through a smoke pipe 1 51 and enters the smoke chamber 1 541, where the smoke temperature is generally 350°C to 450°C, and the smoke is very easy to burn when it meets sufficient oxygen. Smoke is drawn out from the garbage drying chamber 11 through a smoke pipe 2 52 and enters the smoke chamber 2 542, where the smoke temperature is generally 250°C to 350°C, and smoke is drawn out from the garbage storage chamber 14 through a smoke pipe 3 53 and enters the smoke chamber 2 542, where the smoke temperature is generally 150°C to 280°C; the two smoke chambers drawn out from the garbage drying chamber 11 and the garbage storage chamber 14 are connected to the smoke chamber 2 542, where the smoke temperature is generally 150°C to 280°C. The water content of this type of flue gas is relatively high, and direct combustion affects the quality and effect of combustion. However, the temperature of the flue gas introduced into the garbage pyrolysis chamber 11 is relatively high. The flue gas is very easy to burn when it meets sufficient oxygen. It first enters the flue gas cavity 1 541, and then enters the flue gas combustion chamber 50, and enters the flue gas combustion chamber 50 for mixed combustion with the flue gas from the flue gas cavity 2 542. At the same time, excess oxygen is transported to the oxygen distribution cavity 55 through the oxygen distribution fan and enters the flue gas combustion chamber 50. After ignition, the flue gas and excess oxygen are completely burned. The combustion temperature of the flue gas combustion chamber 50 exceeds 1100°C and can reach up to 1400°C. The combustion is stable, clean and efficient. Toxic and harmful gases such as dioxins are basically burned out, effectively ensuring that the flue gas meets the clean emission standards. At the same time, regulating valves 513 for regulating the flow of smoke are respectively provided on the smoke pipe 1 51, the smoke pipe 2 52 and the smoke pipe 3 53. By respectively drawing out smoke from the garbage pyrolysis chamber 12, the garbage drying chamber 11 and the garbage storage chamber 14 and burning them in the smoke combustion chamber 50, and by adjusting the openings of the regulating valves 513 on the smoke pipe 1 51, the smoke pipe 2 52 and the smoke pipe 3 53, smoke regulation can be performed. According to the combustion conditions, the proportion of smoke introduced from the garbage pyrolysis chamber 12, the garbage drying chamber 11 and the garbage storage chamber 14 of the garbage pyrolysis gasification furnace is adjusted to facilitate stable and efficient combustion. In addition, drawing out smoke from the garbage pyrolysis chamber 12, the garbage drying chamber 11 and the garbage storage chamber 14 of the garbage pyrolysis gasification furnace respectively helps to regulate and control the combustion, pyrolysis and drying of garbage in the garbage combustion chamber 13, the garbage pyrolysis chamber 12, the garbage drying chamber 1 and the garbage storage chamber 14 of the garbage pyrolysis gasification furnace.

[0067] In a preferred embodiment, a smoke disperser is provided at the top of the smoke cavity 54 to communicate with the inside of the smoke combustion chamber 50, and the smoke disperser includes a plurality of smoke dispersion pipes 543 distributed around the circumference, the plurality of smoke dispersion pipes 543 are evenly distributed, the lower portion of the smoke dispersion pipes 543 is upright, the upper portion is inclined at a 45° elevation angle, the vertical projection of the upper tail end of each smoke dispersion pipe 543 is located on the tangent line of the circle where the smoke dispersion pipe 543 is located, and the upper tail ends of the plurality of smoke dispersion pipes 543 distributed around the circumference are all distributed clockwise at the same time. By providing the smoke dispersion pipes 543 evenly distributed around the circumference, the smoke in the smoke cavity 1 541 and the smoke cavity 2 542 can enter the smoke combustion chamber 50 through the smoke dispersion pipes 543 respectively. A flue gas disperser is provided at the top of the oxygen distribution chamber 55 to communicate with the inside of the flue gas combustion chamber 50. The oxygen disperser includes a plurality of oxygen dispersion tubes 551 distributed around the circumference. The plurality of oxygen dispersion tubes 551 are evenly distributed. The lower portion of the oxygen dispersion tubes 551 is vertically arranged, and the upper portion is inclined at a 45° elevation angle. The vertical projection of the upper tail end of each oxygen dispersion tube 551 is located on the tangent line of the circle where the oxygen dispersion tube 551 is located. The upper tail ends of the plurality of oxygen dispersion tubes 551 distributed around the circumference are all oriented clockwise at the same time. By providing the oxygen dispersion tubes 551 evenly distributed around the circumference, the oxygen in the oxygen distribution chamber 55 can enter the flue gas combustion chamber 50 through the flue gas dispersion tubes 543 respectively. The tail end of the oxygen dispersion tube 551 is slightly biased toward the flue gas dispersion tube 543, and is on the same horizontal line as the horizontal height of the tail end of the flue gas dispersion tube 543. By setting the smoke dispersion pipe 543 and the oxygen dispersion pipe 551 with the same elevation angle and rotation direction, the smoke and oxygen enter the smoke combustion chamber 50 in the form of a rotating vortex. The smoke and oxygen rotate in the smoke combustion chamber, which not only prolongs the residence time of the smoke in the smoke combustion chamber, but also makes the smoke and oxygen mix and burn better, so that the smoke burns more completely, the combustion temperature is more balanced, and the combustion effect is better.

[0068] A heat exchange chamber 505 is arranged at the upper part of the flue gas combustion chamber 50, and the heat exchange chamber 505 is filled with circulating water; a flue gas collecting chamber 58 and an oxygen heating chamber 59 are arranged at the top of the heat exchange chamber 505, and the oxygen heating chamber 59 surrounds the periphery of the flue gas collecting chamber 58; a plurality of flue gas heat exchange pipes 503 are arranged in the flue gas combustion chamber 56, which pass through the heat exchange chamber 505 and are connected to the flue gas collecting chamber 58, a tee is arranged at the top center position of the flue gas collecting chamber 58, a safety valve is arranged at the vertical upward port, and a flue gas outlet 504 is arranged at the lateral port; a vertical partition is arranged in the oxygen heating chamber 59 to separate the oxygen heating chamber 59 there, and the oxygen heating chamber 59 is provided with an oxygen input port 591 on one side of the partition, and an oxygen output port 592 on the other side of the partition, and the oxygen output port 592 is connected to the oxygen distribution chamber 55. The upper outer side of the flue gas combustion chamber 50 and the lower outer side of the heat exchange chamber 505 are connected by a circulating water pipe. A circulating water inlet pipe is arranged at the lower position of the flue gas combustion chamber 50, and a circulating water outlet pipe is arranged at the upper part of the heat exchange chamber 505. The water outlet pipe is connected to the circulating hot water pool. The heat exchange chamber 505 is filled with circulating water, and a passage for the circulating water to enter and exit is provided to realize the circulation of the circulating water therein and the external water source. When the flue gas combustion chamber 50 realizes the flue gas combustion, the high-temperature flue gas generated is collected into the flue gas collection chamber 58 through the flue gas heat exchange pipe 503, and then goes out from the flue gas outlet 504. When the flue gas passes through the flue gas heat exchange pipe 503, the circulating water in the heat exchange chamber 505 is heated by heat conduction, that is, a form similar to boiler heating is formed to obtain circulating water with a certain temperature. In this way, on the one hand, hot water can be obtained to fully utilize the energy of the flue gas, which plays a role in saving energy and improving energy utilization. On the other hand, the temperature of the flue gas going out of the flue gas combustion chamber 50 can also be reduced, reducing the difficulty of post-processing. At the same time, the oxygen heating chamber 59 surrounds the outer periphery of the flue gas collecting chamber 58. A vertical partition is arranged in the oxygen heating chamber 59 to separate the oxygen heating chamber 59 there. An oxygen input port 591 is arranged on one side of the partition of the oxygen heating chamber 59, and an oxygen output port 592 is arranged on the other side of the partition. The oxygen output port 592 is connected with the oxygen distribution chamber 55. External oxygen first enters the oxygen heating chamber 59 through the oxygen output port 592. Under the action of the partition in the oxygen heating chamber 59, the oxygen can only go around the oxygen heating chamber 59 once before going out through the oxygen output port 592, and enter the flue gas combustion chamber 50 through the oxygen distribution chamber 55 for combustion. When the oxygen goes around the oxygen heating chamber 59 once, it will be heated by the burned fuel gas. The heated oxygen is mixed with the flue gas, making the flue gas easier to burn, thereby facilitating the stable, efficient and thorough combustion of the flue gas.

[0069] Furthermore, the second flue gas pipe 52 and the third flue gas pipe 53 are equipped with a condensation and dehydration device 57 for realizing condensation and dehydration of flue gas. The second flue gas pipe 52 and the third flue gas pipe 53 share a condensation and dehydration device 57. The second flue gas pipe 52 and the third flue gas pipe 53 are connected to the condensation and dehydration device 57 respectively, and are connected to the second flue gas chamber 542 through the same flue gas pipe after coming out. Specifically, the condensation and dehydration device 57 includes a cylinder 571, a collecting chamber 572 is arranged at the upper part of the cylinder 571, a condensation inlet 1 573 and a condensation inlet 2 574 are arranged at the top of the collecting chamber 572, a circulating water chamber 575 is arranged in the middle part of the cylinder 571, and a sewage chamber 576 is arranged at the lower part of the cylinder 571. A plurality of condensation unit smoke pipes 577 passing through the circulating water chamber 575 are connected between the collecting chamber 572 and the sewage chamber 576. The collecting chamber 572 is connected to the second flue gas pipe 52 through the condensation inlet 1 573, so that the flue gas can be discharged from the front. The smoke pipe 2 52 enters the collecting chamber 572 and passes through the condensing unit smoke pipe 564 and the sewage chamber 565 in sequence and then goes out of the sewage chamber 565 to enter the smoke chamber 2 542. The collecting chamber 572 is connected with the smoke pipe 3 53 through the condensing inlet 2 574, so that the smoke can enter the collecting chamber 572 from the front smoke pipe 3 53 and pass through the condensing unit smoke pipe 564 and the sewage chamber 565 in sequence and then go out of the sewage chamber 565 to enter the smoke chamber 2 542. The position where the sewage chamber 565 is connected to the rear smoke pipe is located at the top of the sewage chamber 565. During implementation, part of the flue gas enters the collecting chamber 572 from the drying chamber of the garbage pyrolysis gasification furnace through the flue pipe 2 52 and the condensation inlet 1 573, and part of the flue gas enters the collecting chamber 572 from the storage chamber of the garbage pyrolysis gasification furnace through the flue pipe 3 53 and the condensation inlet 2 574, and then enters the sewage chamber 565 through the condensation unit flue pipe 564, and enters the flue gas chamber 2 542 through the rear flue pipe after exiting the sewage chamber 565, condenses and removes part of the water when passing through the condensation unit flue pipe 564, and the water is temporarily stored at the bottom of the sewage chamber 565, and the dehydrated flue gas is burned in the flue gas combustion chamber 50. Although the temperature of the flue gas may drop below 100°C after being dehydrated by the condensation and dehydration device 57, it can still maintain a good combustion efficiency when it enters the flue gas combustion chamber 50 and is mixed and burned with the high-temperature flue gas from the flue pipe 1 51 at the same time.

[0070] A smoke collecting tank 521 is arranged on the pipeline between the condensation and dehydration device 57 and the second smoke chamber 542. The smoke entering after condensation first enters the smoke collecting tank 521 for temporary collection, and then enters the smoke chamber 54, which can temporarily store the smoke on the one hand, and can buffer the smoke on the other hand; the smoke collecting tank 521 can also be connected to the garbage combustion chamber 13 of the garbage pyrolysis gasification furnace by setting a branch pipe and an air induced device. When the garbage has a low calorific value and is difficult to burn, the combustible gas stored in the smoke collecting tank 521 can be guided back to the garbage combustion chamber 13 of the garbage pyrolysis gasification furnace to assist combustion.

[0071] Please refer to Figure 1 and Fig.10 A rapid cooling device 90 is provided between the flue gas purification device and the flue gas combustion device. The rapid cooling device 90 includes a rapid cooling device cylinder 91, a rapid cooling device collection chamber 93 located at the upper part of the rapid cooling device cylinder 91, a rapid cooling device circulating water chamber 92 located in the middle of the rapid cooling device cylinder 91, and a rapid cooling device water storage tank 94 located at the lower part of the rapid cooling device cylinder 91. A plurality of rapid cooling device unit smoke pipes 95 passing through the rapid cooling device circulating water chamber 92 are connected between the rapid cooling device collection chamber 93 and the rapid cooling device water storage tank 94. 92 is filled with circulating water, and has openings for the circulating water to enter and exit so that the circulating water therein can be kept at a certain low temperature. The rapid cooling and cooling device collecting chamber 93 is connected with the flue gas combustion device, specifically, is connected with the flue gas outlet 504. The rapid cooling and cooling device water tank 94 is connected with the flue gas purification device so that the cooled flue gas can enter the flue gas purification device from the rapid cooling and cooling device 90, and the position where the rapid cooling and cooling device water tank 94 is connected with the flue gas purification device at the rear is located at the top of the rapid cooling and cooling device water tank 94. During implementation, the flue gas comes out of the flue gas combustion chamber 50 and enters the quenching and cooling device collecting chamber 93 located at the upper part of the quenching and cooling device cylinder 91, and enters the quenching and cooling device water storage tank 94 through the quenching and cooling device unit smoke pipe 95. Since the flue gas passes through the quenching and cooling device unit smoke pipe 95 and passes through the quenching and cooling device circulating water chamber 92, when passing through the quenching and cooling device circulating water chamber 92, since the temperature of the quenching and cooling device unit smoke pipe 95 is relatively low, the heat is transferred to the circulating water in the quenching and cooling device circulating water chamber 92 by heat conduction, and the moisture carried by the flue gas condenses to form water and falls downward into the water storage tank. 94 and temporarily stored, the flue gas is cooled, and multiple condensing unit smoke pipes 95 are helpful for cooling the flue gas. The high-temperature flue gas from the flue gas combustion device is introduced into the rapid cooling device 90 through a pipeline for rapid cooling to reduce the flue gas temperature to below 100°C, which can effectively prevent the secondary synthesis of dioxins; of course, the bottom of the water tank 94 is correspondingly provided with a water outlet for drainage when the water accumulates to a certain extent (the water outlet is not opened when it does not drain water), and the cooled flue gas enters the flue gas purification device at the rear from the rapid cooling device water tank 94 for flue gas purification. The cooling water with a certain temperature obtained when the flue gas is cooled can be used for bathing or heating, etc.

[0072] Furthermore, a flue gas heating chamber 97 is arranged around the outer periphery of the rapid cooling and cooling device collecting chamber 93, and is connected with the furnace body 10 through a pipeline, so that the flue gas in the furnace body 10 (such as the flue gas generated in the garbage drying chamber 11) is introduced into the flue gas heating chamber 97, and the low-temperature flue gas introduced into the flue gas heating chamber 97 is heated by the high-temperature flue gas in the rapid cooling and cooling device collecting chamber 93, and then returned to the furnace to enter the garbage combustion chamber 13 for combustion, thereby increasing the furnace temperature, facilitating the treatment of wet garbage and low-calorific value garbage, and eliminating the need for any auxiliary fuel for garbage treatment.

[0073] Please refer to Figure 1 , Figures 11 to 13 The flue gas purification device mainly includes a flue gas purification chamber 71, a flue gas dispersion chamber 72, a flue gas diversion chamber 74, a flue gas spray chamber 75, an oil purification chamber 77 and a purification solution chamber 79.

[0074] The flue gas purification chamber 71 is a horizontal chamber with a rectangular upper part and a semi-cylindrical bottom. A flue gas dispersion chamber 72 is arranged on the top of one end of the flue gas purification chamber 71, and a flue gas spray chamber 75 is arranged on the top of the other end. The top of the flue gas dispersion chamber 72 is provided with a flue gas purification inlet 73 for introducing the flue gas after combustion, and the bottom is connected to the flue gas purification chamber 71 through multiple flue gas dispersion outlets. The bottom of the flue gas spray chamber 75 is connected to the top of the flue gas purification chamber 71, and the top of the flue gas spray chamber 75 is provided with a flue gas purification outlet 76 for letting the purified flue gas out. The flue gas purification chamber 71 is filled with a purification solution, so that the flue gas passes into the purification solution to react with the purification solution, and the purification solution adsorbs and removes dust and toxic and harmful components in the flue gas. It is worth noting that the solution for treating flue gas is a well-known technology in the field and will not be described in detail here. A smoke spray pipe 751 is provided at the upper part of the smoke spray chamber 75 to spray the smoke by spraying water. At least one smoke spray nozzle is provided on each smoke spray pipe 751 to capture smoke dust and toxic and harmful components that fall into the lower part of the smoke spray chamber 75 and mix with the solution in the smoke purification chamber 71. An L-shaped pipe 753 is provided in the smoke purification chamber 71. The L-shaped pipe 753 is located below the smoke spray chamber 75. The vertically arranged part of the L-shaped pipe 753 opens upward, and the horizontal part passes through the smoke purification chamber 71. During implementation, the smoke enters the smoke dispersion chamber 72 from the smoke purification inlet 73, and then disperses into the smoke purification chamber 71 through each smoke dispersion outlet. The smoke purification chamber 71 is provided with an inspection port to facilitate the inspection of the smoke purification chamber 71, such as cleaning the impurities in the smoke purification chamber 71.

[0075] During implementation, the smoke purification chamber 71 is filled with a solution for purifying smoke, and the liquid level of the solution at least reaches the top of the smoke purification chamber 71, so that the smoke dispersion outlet is immersed, so that the smoke passes from the smoke dispersion chamber 72 into the smoke purification chamber 71 and then flows to one end of the smoke spray chamber 75 and enters the smoke spray chamber 75. The smoke enters from the smoke purification inlet 73 and passes into the dispersion chamber 72 through the action of the induced draft device 40, and then enters the smoke purification chamber 71 through each smoke dispersion outlet. The smoke dispersion outlet extends into the smoke purification chamber 71 and the liquid level of the smoke purification chamber 71 at least reaches the top of the smoke purification chamber 71, so that the smoke entering the smoke purification chamber 71 from each smoke dispersion outlet will almost pass through the entire smoke purification chamber 71 and come out from the other end to enter the smoke spray chamber 75. On the one hand, multiple smoke dispersion outlets allow smoke to be dispersed, increasing the contact area between smoke and solution, and the dispersed smoke is easier to purify. On the other hand, the path and time of smoke passing through the smoke purification chamber 71 are longer, extending the time and path of smoke passing, so that the purification is more thorough. This is a primary purification. Smoke enters the smoke spray chamber 75 from the smoke purification chamber 71, and the water washing spray pipe sprays water downward to spray the smoke for secondary purification. The purified smoke goes out from the smoke purification outlet 76 at the top of the smoke spray chamber 75 to achieve smoke purification. The smoke going out from the smoke purification outlet 76 is then collected and processed in the subsequent centralized process. Due to continuous spraying, the solution exceeding the pipe opening at the top of the vertical part of the L-shaped pipe 753 can be discharged through the L-shaped pipe 753, such as being discharged to a sewage pool for further treatment. The smoke purification device of the present invention can achieve efficient purification of smoke, and by at least two purifications, the purification effect is better, and the dust, oil smoke, etc. in the smoke can be purified more thoroughly and cleanly.

[0076] Furthermore, the smoke diversion chamber 74 is arranged on the top of the middle part of the smoke purification chamber 71, and the bottom of the smoke diversion chamber 74 is connected to the smoke purification chamber 71 through a smoke diversion inlet 741 at a position close to the smoke dispersion chamber 72, and the bottom of the smoke diversion chamber 74 is connected to the smoke purification chamber 71 through a diversion outlet at a position away from the smoke dispersion chamber 72. A smoke baffle 713 is arranged in the smoke purification chamber 71, and the smoke baffle 713 is located between the smoke diversion inlet 741 and the diversion outlet. The smoke baffle 713 is vertically arranged downward from the top of the smoke purification chamber 71 to block the smoke from passing there. A plurality of straight smoke dispersion pipes 723 are arranged at the bottom of the smoke dispersion chamber 72, and the straight smoke dispersion pipes 723 penetrate downward into the smoke purification chamber 71 and are located in the purification solution of the smoke purification chamber 71 to form a smoke dispersion outlet; a plurality of straight smoke diversion pipes 742 are arranged at the bottom of the smoke diversion chamber 74, and the straight smoke diversion pipes 742 penetrate downward into the smoke purification chamber 71 and are located in the purification solution of the smoke purification chamber 71 to form a smoke diversion outlet; the straight smoke dispersion pipes 723 and the straight smoke diversion pipes 742 both have the function of achieving smoke dispersion and diversion, so as to disperse and divert the smoke into multiple streams of smoke. The structures of the straight smoke dispersion pipes 723 and the straight smoke diversion pipes 742 are the same, please refer to Fig.12 At the bottom side wall of each flue gas dispersion straight tube 723 and each flue gas diversion straight tube 742, a plurality of side dispersion ports 701 penetrating the side wall are provided circumferentially, and the side dispersion ports 701 extend to the bottom end of the flue gas dispersion straight tube 723 or the flue gas diversion straight tube 742. The bottom end ports of the flue gas dispersion straight tube 723 and the flue gas diversion straight tube 742 are inserted into the flue gas purification chamber 71 purification solution to a consistent depth of about 45 cm, so that the flue gas and the purification solution are contacted, washed and reacted; the side dispersion ports 701 of each flue gas dispersion straight tube 723 and each flue gas diversion straight tube 742 are inserted into the flue gas purification chamber 71 purification solution to a consistent depth of about 25 cm. Since the purification solution in the flue gas purification chamber 71 contains a large proportion of water, more than 99%, and the remaining components are extremely small, the density of the purification solution can be approximately regarded as the density of water, which is about 1.0×10 3 kg / m 3 The density of smoke is about 1.3-1.4 g / dm 3 The density of water is more than 700 times greater than that of flue gas, and the density of water is very small compared to that of flue gas. The deeper the water, the greater the pressure, and flue gas will float in water. Therefore, after the flue gas flows from the flue gas dispersion straight pipe 723 and the flue gas diversion straight pipe 742 to the side dispersion port 701, the water pressure and the buoyancy of the flue gas force the flue gas to be separated from the side dispersion port 701 of the flue gas dispersion straight pipe 723 and the flue gas diversion straight pipe 742, so that the flue gas is again diverted and dispersed into multiple thin flue gas flows and enters the purification solution, increasing the contact, washing and reaction between the flue gas and the purification solution.

[0077] One end of the smoke baffle 713 is welded under the top plate of the smoke purification chamber 71, and the other end is inserted into the smoke purification chamber 71 to a depth of about 60 cm in the purification solution. At this time, due to the pressure of the purification solution, the buoyancy of the smoke, and the attraction of the system induced draft fan, the smoke flows along the top plate of the smoke purification chamber 71 to the smoke outlet, and the smoke baffle 713 blocks the path for the smoke to pass directly here. At this time, there are two possible paths for the smoke to pass through. One is to rise from the smoke diversion inlet 741 to enter the smoke diversion chamber 74, and then flow back to the purification solution of the smoke purification chamber 71 through each smoke diversion straight pipe 742; the other is to pass through the bottom of the smoke baffle 713; because the smoke baffle 713 is inserted into the smoke purification chamber 71 to a depth of about 60 cm in the purification solution, and the smoke dispersion straight pipe 723 is inserted into the smoke purification chamber 71 to a depth of about 45 cm in the purification solution, and because the smoke dispersion straight pipe 723 is provided with a plurality of side dispersion ports 701 with a depth of about 25 cm, The flue gas is basically diverted at a depth of about 35cm to 40cm in the flue gas purification chamber 71. Therefore, the pressure at the bottom of the flue gas baffle 713 is greater than the pressure at the outlet port of the flue gas dispersion straight pipe 723. Due to the pressure of the purification solution and the buoyancy of the flue gas, the flue gas cannot pass under the flue gas baffle. The flue gas baffle 713 forces the flue gas to enter the flue gas diversion chamber 74 from the flue gas diversion inlet 741, and then enter the flue gas purification chamber 71 again from the flue gas diversion straight pipe 742 of the flue gas diversion chamber 74, further increasing the contact, washing and reaction between the flue gas and the purification solution. In a preferred embodiment, there are multiple flue gas diversion chambers 74, and the multiple flue gas diversion chambers 74 are distributed side by side between the flue gas dispersion chamber 72 and the flue gas spray chamber 75 to achieve multiple diversion and dispersion of the flue gas.

[0078] A smoke fence 714 is arranged downward from the top of the smoke purification chamber 71, and the smoke fence 714 is located at the rear position of the smoke dispersion straight pipe 723 and the smoke diversion straight pipe 742 in the direction of smoke flow; the smoke fence 714 includes multiple rows of vertically arranged rods for cutting smoke bubbles, which are arranged in parallel, and the multiple rows of rods are staggered. Further, the rods of the smoke fence 714 are slender rods with a diameter of 0.5 to 0.6 cm, and of course, they can be smaller. One end of the smoke fence 714 is welded under the top plate of the smoke purification chamber 71, and the other end is inserted into the smoke purification chamber 71 to a depth of 35 cm for purifying solution; the smoke fence 714 is arranged in multiple rows and columns, staggered, and one rod in the back row and two rods in the front row are evenly arranged in an isosceles triangle shape, that is, each rod in the back row and the two rods on the left and right of the front row form an isosceles triangle shape, and the side length of the isosceles triangle is about 2 cm. After the flue gas is diverted from the flue gas dispersion straight pipe 723 and the flue gas diversion straight pipe 742 and enters the flue gas purification chamber 71 to purify the solution, the flue gas flows along the upper oblique flue gas outlet and the top plate of the flue gas purification chamber 71 due to the pressure of the purification solution, the buoyancy of the flue gas and the attraction of the system induced draft fan. At this time, large airflow and large bubbles continuously hit the flue gas fence 714 and are cut into small or broken and dispersed into small airflow and small bubbles, further increasing the contact and reaction between the flue gas and the purification solution.

[0079] In a preferred embodiment, a smoke spray pipe 751 is provided in the smoke dispersion chamber 72 and the smoke diversion chamber 74, respectively, to spray the smoke by spraying a solution containing a strong alkali, so as to purify the smoke. The sprayed solution containing a strong alkali can enter the smoke purification chamber 71 through the smoke dispersion straight pipe 723 and the smoke diversion straight pipe 742 and mix with the solution in the smoke purification chamber, so that the smoke can be purified when passing through the solution in the smoke purification chamber 71.

[0080] A diverter blade 752 is provided at the upper part of the smoke spray chamber 75, so that the smoke will pass through the diverter blade 752 when flowing upward in the smoke spray chamber 75, so that the smoke will not rush straight up, thereby extending the passage time of the smoke, changing the flow path of the smoke, and improving the spraying effect of the purification solution. The dust, oil stains, etc. carried in the smoke will also adhere to the diverter blade 752, thereby separating the dust, oil stains, etc. from the smoke, so as to achieve cleaner smoke purification. The diverter blade 752 is located below the smoke spray pipe 751. The purification solution is sprayed through the smoke spray pipe 751, so that the dust, oil and the like attached to the diverter blade 752 can be flushed into the bottom of the smoke spray chamber 75. There can be more than two diverter blades 752. The blade units of the diverter blade 752 are distributed in a spiral around a circle. The blade units of two adjacent diverter blades 752 have different rotation directions, so that the smoke is more in contact with the diverter blade 752 when it rises, so as to achieve better purification. In this preferred embodiment, since two diverter blades 752 are provided, a smoke spray pipe 751 is provided above each diverter blade 752, that is, the diverter blade 752 and the smoke spray pipe 751 are arranged at intervals, and at least one smoke spray pipe 751 is located above a diverter blade 752 to ensure the spraying effect.

[0081] The oil purification chamber 77 is arranged beside the smoke purification chamber 71. The lateral part of the L-shaped tube 753 passes through the smoke purification chamber 71 and is connected with the oil purification chamber 77. A smoke reflux pipe 771 is arranged on the top of the oil purification chamber 77 and is connected with the smoke spray chamber 75. The bottom of the oil purification chamber 77 is a conical funnel-shaped structure with a larger upper part and a smaller lower part. A sewage pipe 772 is arranged at the bottom of the oil purification chamber 77; an oil and sewage pipe 773 is arranged on the side wall of the middle and upper half of the oil purification chamber 77, and the oil and sewage pipe 773 is equipped with a gate valve.

[0082] Due to continuous spraying, the solution exceeding the pipe opening at the top of the vertical part of the L-shaped pipe 753 is discharged from the smoke purification chamber 71 through the L-shaped pipe 753 and enters the oil purification chamber 77. Considering that a small amount of smoke will be discharged through the L-shaped pipe 753, if it is directly discharged into the sewage pool, this part of the smoke cannot be further collected and processed, which is not conducive to the complete treatment of the smoke. Therefore, this part of the smoke is discharged through the L-shaped pipe 753 and enters the oil purification chamber 77. A smoke return pipe 771 is arranged on the top of the oil purification chamber 77 to communicate with the smoke spray chamber 75. This part of the smoke The oil-pollution purification chamber 77 can also enter the smoke spray chamber 75 through the smoke return pipe 771, and then go out through the smoke purification outlet 76 at the top of the smoke spray chamber 75. The bottom of the oil-pollution purification chamber 77 is a conical funnel-shaped structure with a large top and a small bottom. The conical funnel-shaped structure is conducive to the precipitation of dust particles and impurities in the solution to the bottom. A sewage pipe 772 is arranged at the bottom of the conical funnel-shaped structure of the oil-pollution purification chamber 77. The solution in the oil-pollution purification chamber 77 is discharged together with dust particles and impurities through the sewage pipe 772, such as being discharged to a sewage pool for further treatment. 2 is provided with a valve or a water pump to control the flow of the drain liquid so that the liquid level in the oil purification chamber 77 is substantially level with the top port of the vertical portion of the L-shaped tube 753; an oil drainage pipe 773 is provided on the side wall of the oil purification chamber 77, and a valve is provided on the oil drainage pipe 773 so that the oil can be discharged through the oil drainage pipe 773 only when the oil is actively drained, and the oil cannot be discharged through the oil drainage pipe 773 when the oil is not actively drained. Similarly, the smoke cannot be discharged through the oil drainage pipe 773. The oil purification chamber 77 is filled with the purification solution to the L-shaped tube 753. 3 about 30cm below the horizontal port, to ensure that the oil from the L-shaped tube 753 standing upright naturally overflows and flows into the oil purification chamber 77, leaving a certain volume space; the solution discharged into the oil purification chamber 77 through the L-shaped tube 753 has a certain amount of oil, and the oil will float on the top of the solution. By controlling the speed of the solution discharged from the oil purification chamber 77, as the oil accumulates more and more, the oil layer will gradually become thicker and stack upwards. By setting the oil discharge pipe 773, when the oil in the oil purification chamber 77 accumulates to a certain amount, the oil can be discharged through the oil discharge pipe 773. By setting the oil purification chamber 77, the separation of flue gas, solution and oil can be achieved and corresponding treatment can be achieved, making the flue gas purification more thorough, more reasonable, efficient and environmentally friendly.

[0083] The purified solution chamber 79 is arranged beside the oil purification chamber 77 for further purification, storage and filling of purified solution. A connecting pipe 793 is arranged at the middle and lower part of the purified solution chamber 79 to connect with the oil purification chamber 77 so that the oil and sewage in the smoke spray chamber 75 overflow into the oil purification chamber 77 for purification and then enter the purified solution chamber 79. A sewage oil pipe 773 is arranged on the side wall of the middle and upper part of the purified solution chamber 79. The sewage oil pipe 773 is equipped with a gate valve. A purified solution output pipe 791 is arranged on the side wall of the lower part of the purified solution chamber 79. A sprayer is arranged on the purified solution output pipe 791 and connected with the smoke spray pipe 751, and spray solution and purified solution are provided to the smoke spray chamber 75, the smoke diversion chamber 74, the smoke dispersion chamber 72 and the smoke purification chamber 71. A smoke return pipe 771 is arranged at the top of the purified solution chamber 79 to communicate with the smoke spray chamber 75. A connecting pipe 793 is provided on the middle and lower side wall of the purified solution chamber 79 to connect with the oil purification chamber 77 so that the oil and sewage in the smoke spray chamber 75 overflow into the oil purification chamber 77 for purification and then enter the purified solution chamber 79; a liquid adding port 79 is provided on the top of the purified solution chamber 79 for adding purified solution, and a valve capable of blocking the liquid adding port 710 is provided on the liquid adding port 710. The purified solution chamber 79 is filled with purified solution to 30 cm below the horizontal port of the L-shaped tube 753 to ensure that the oil at the upright upward port of the L-shaped tube 753 naturally overflows into the oil purification chamber 77 and the purified solution chamber 79, and a certain volume space is reserved. A smoke reflux pipe 771 is provided on the top of the purified solution chamber 79 to communicate with the smoke spray chamber 75, so that the smoke in the purified solution chamber 79 flows back to the smoke spray chamber 75, and the air pressure of the smoke spray chamber 75, the oil purification chamber 77 and the purified solution chamber 79 is kept consistent. With reference to the oil purification chamber 77, a sewage pipe 772 is provided at the bottom of the purification solution chamber 79. The solution in the oil purification chamber 77 is discharged together with dust particles and impurities through the sewage pipe 772, such as being discharged to a sewage pool for further treatment. A valve or a water pump is provided on the sewage pipe 772 to control the flow rate of the discharged liquid. As the oil accumulates more and more, the oil layer will gradually become thicker and stack upwards. By providing an oil sewage pipe 773, when the oil in the purification solution chamber 79 accumulates to a certain amount, the oil can be discharged through the oil sewage pipe 773.

[0084] There can be one L-shaped tube 753 or multiple L-shaped tubes 753. When there are multiple L-shaped tubes 753, the vertical upward ports of the multiple L-shaped tubes 753 are evenly distributed at the same horizontal height, and the lateral ports are at the same height.

[0085] In this preferred embodiment, the flue gas purification chamber 71, the flue gas dispersion chamber 72, the flue gas diversion chamber 74, the flue gas spray chamber 75, the oil purification chamber 77 and the purification solution chamber 79 form a flue gas washing spray purification circulation system; after a certain period of time of washing and spraying to purify the flue gas, the purification solution is polluted by the flue gas and becomes sewage, and the purification capacity is weakened. Then, the sludge and sewage in each chamber can be cleaned and discharged through the sewage pipe 715 set at the bottom of the flue gas purification chamber 71, and new purification solutions are added accordingly to replace the new purification solutions to maintain the purification effect. The flue gas purification device is connected to the garbage pyrolysis gasification treatment equipment system at the front end to introduce the flue gas from the flue gas purification inlet 73, and the induced draft fan is connected to the rear end to promote the circulation of the flue gas in the flue gas purification device.

[0086] The following is a specific flue gas purification process of this preferred embodiment:

[0087] The purification solution is added to the purification solution chamber 79, the oil purification chamber 77, the smoke purification chamber 71 and the smoke spray chamber 75, and the purification solution is added to the smoke spray chamber 75 to the vertical opening end of the L-shaped tube 753; because the bottom of the smoke purification chamber 71 is connected to the top of the smoke spray chamber 75, the vertical vertical part of the L-shaped tube 753 is located below the bottom of the smoke spray chamber 75, the opening is upward, and the horizontal height of the opening is the same as the smoke dispersion straight tube 723 of the smoke dispersion chamber 72 and the smoke diversion straight tube of the smoke diversion chamber 74. The air inlet ports of the flue gas purification chamber 71 are at the same level. At this time, the flue gas purification chamber 71 is filled with the purification solution. The purification solution is filled to the air inlet ports of the flue gas dispersion straight pipe 723 of the flue gas dispersion chamber 72 and the flue gas diversion straight pipe 742 of the flue gas diversion chamber 74. The oil purification chamber 77 is filled with the purification solution to 30 cm below the lateral port of the L-shaped pipe 753. Since the oil purification chamber 77 and the purification solution chamber 79 are connected by a connecting pipe at the lower half, the purification solution chamber 79 also has the same level of purification solution.

[0088] The system induced draft fan and the purification solution sprayer are turned on, and the flue gas purification device starts to work. After the flue gas after combustion is cooled by the rapid cooling device 90, it enters the flue gas dispersion chamber 72 under the attraction of the induced draft fan. The flue gas spray pipe 751 of the flue gas dispersion chamber 72 sprays the flue gas. The flue gas enters the flue gas dispersion straight pipe 723 and is dispersed and diverted from the side dispersion port 701 of the flue gas dispersion straight pipe 723 into the purification solution of the flue gas purification chamber 71. The flue gas is attracted by the induced draft fan and the buoyancy in the purification solution, and then flows to the flue gas dispersion chamber 71. The smoke flows through the top of the smoke purification chamber 71 and the smoke purification outlet 76 of the smoke spray chamber 75. After the smoke is dispersed from the side dispersion port 701 of the smoke dispersion straight pipe 723, the large airflow and large bubbles of the smoke continuously hit the smoke fence 714 and are cut or broken and dispersed into small airflow and small bubbles. Then, under the partition effect of the smoke baffle 713, the pressure at the bottom of the smoke baffle 713 is greater than the pressure at the outlet port of the smoke diversion straight pipe 742. Due to the pressure of the purification solution and the buoyancy of the smoke, the smoke cannot be dispersed in the smoke baffle. The smoke passes under the plate 713, and rises from the smoke diversion inlet 741 to the smoke diversion chamber 74. The smoke spray pipe 751 of the smoke diversion chamber 74 sprays the smoke. The smoke enters the smoke diversion straight pipe 742 and is diverted from the side dispersion port 701 of the smoke diversion straight pipe 742 into the purification solution of the smoke purification chamber 71. The smoke is attracted by the induced draft fan and the buoyancy in the purification solution, and flows toward the top of the smoke purification chamber 71 and the smoke purification outlet 76 of the smoke spray chamber 75. The airflow of the smoke The large bubbles continuously hit the smoke fence 14 and are cut into small pieces or broken and dispersed into small airflow and small bubbles. The smoke passes through the top opening of the smoke purification chamber 71 and emerges from the bottom of the smoke spray chamber 75 and the surface of the purified solution at the position where the opening of the vertically erected part of the L-shaped pipe 753 is located, and enters the smoke spray chamber 75. The smoke spray pipe 751 of the smoke spray chamber 75 sprays the purified solution to the smoke. The smoke is attracted by the induced draft fan and moves upward through the spirally distributed diverter blades 752 and goes out from the smoke purification outlet 76 to complete the smoke purification.

[0089] The oil enters the smoke purification chamber 71 along with the smoke from the smoke dispersion straight pipe 723 of the smoke dispersion chamber 72 or the smoke diversion straight pipe 742 of the smoke diversion chamber 74, and part of the dust falls to the bottom of the smoke purification chamber 71, and is discharged through the sewage pipe 715 after accumulating a certain amount, and the oil enters the oil purification chamber 77 along with the solution through the L-shaped pipe 753, and part of the dust falls to the bottom of the oil purification chamber 77 and is discharged through the sewage pipe 772, and part of the dirty oil is discharged from the sewage pipe 773 along with the solution, and part of the oil enters the purification solution chamber 79 along with the solution through the connecting pipe 793, and part of the dust falls to the bottom of the purification solution chamber 79 and is discharged through the sewage pipe 772, and the remaining dirty oil is discharged from the sewage pipe 773;

[0090] The relatively clean solution in the purified solution chamber 79 is transported by a sprayer through the purified solution output pipe 791 to the smoke spray chamber 75, the smoke diversion chamber 74 and the smoke dispersion chamber 72 through the smoke spray pipe 751 for spraying, and the relatively clean solution is returned to the smoke purification chamber 71; and the smoke entering the oil purification chamber 77 and the purified solution chamber 79 will rise under the action of buoyancy and flow back to the smoke spray chamber 75 through the smoke reflux pipe 771, and after spraying, it will be discharged from the smoke purification outlet 76 at the top of the smoke spray chamber 75.

[0091] The induced draft device 40 is connected to the smoke spray chamber 75 of the smoke purification device, specifically connected to the smoke purification outlet 76 through a pipeline, and is used to introduce the smoke after combustion in the smoke combustion chamber 50 into the smoke dispersion chamber 72 and enter the smoke spray chamber 75 through the smoke purification chamber 71 to achieve smoke purification. Of course, in this process, the induced draft device 40 can also promote the smoke from the furnace body 10 through the smoke pipe 51, the smoke pipe 52 and the smoke pipe 53 to enter the smoke combustion device to achieve smoke combustion. The induced draft device 40 includes an induced draft fan. The discharge device 100 is connected to the induced draft device 40 to discharge the smoke purified by the smoke purification device. Preferably, a spray tower 30 can be set between the discharge device 100 and the induced draft device 40 to play a role of spray purification and buffering. The front end of the flue gas purification device is connected to the rapid cooling device 90, and the rear end is connected to the induced draft device 40 and the discharge device 100 in sequence; the rapid cooling device 90 can reduce the temperature from about 230°C to about 90°C; the discharge device 100 includes a chimney, which is set according to national standards, an interface reactor is set at the front end of the chimney, and a flue gas monitor is set at a height of 3m of the chimney. In some other preferred embodiments, the induced draft device 40 can also be located between the flue gas combustion device and the flue gas purification device, such as being set between the rapid cooling device 90 and the flue gas purification device so as to blow the combusted and cooled flue gas into the flue gas purification device for purification. When the induced draft device 40 is set between the flue gas combustion device and the flue gas purification device, the discharge device 100 is connected to the flue gas purification device. It is worth noting that in some preferred embodiments, any cooling device that is known to meet the requirements of flue gas cooling and temperature reduction can be used as the rapid cooling device 90 of the present invention; any device that is known to meet the requirements of flue gas circulation can be used as the induced draft device 40 of the present invention; any device that is known to meet the requirements of flue gas exhaust can be used as the exhaust device 100 of the present invention.

[0092] In a preferred embodiment, monitoring and control devices are installed at corresponding positions such as garbage storage chamber, garbage drying chamber, garbage pyrolysis chamber, garbage combustion chamber and slag chamber, slag chamber, as well as various chambers of flue gas combustion device, condensation and dehydration device and various air inlet surrounds, flue gas outlets, various flue gas pipes, cooling tube cavities, and configured blowers. The monitoring data information automatically detected, fed back and collected by the garbage high-temperature pyrolysis and gasification treatment equipment and facilities, such as sensors in various chambers of the equipment, the flow of cooling water and the temperature of cooling water at various positions, the water level and pressure of various chambers of the equipment, the air volume of the fan, etc., are processed by computer and adjusted automatically or manually to realize the operation control of various processes and facilities in the system, such as fan start-up and air volume adjustment, ash and slag removal, water replenishment and supply, electric furnace top cover, water pump and valve opening and closing, etc.; real-time intelligent computer monitoring and control, and network management can be realized to realize system control automation.

[0093] The following are the specific process steps for garbage treatment in the garbage pyrolysis gasification furnace:

[0094] S1. Before ignition, all monitoring and control devices in the central control room are turned on and enter the working state, and the slag chamber 61 and the ash discharge chamber 68 of the garbage pyrolysis gasification furnace are filled with ash; water is injected into the circulating cooling water pipes of the cooling layer of the garbage pyrolysis gasification furnace, the rapid cooling device 90, the flue gas combustion device, and the flue gas purification device to the water outlet of the upper end circulating water pipe, and purification liquid is added to each chamber of the flue gas purification device to the vertical port of the oil overflow pipe of the L-shaped pipe 753;

[0095] S2, open the furnace top cover 18, open the isolation door 15 between the garbage drying chamber 11 and the garbage storage chamber 14, place the ignition fuel and dry combustibles in sequence, or place appropriate dry garbage on the dry combustibles, to a height of about 50 cm above the top of the oxygen distribution pipe; close the isolation door 18, and then use the transport vehicle to directly pour the entire vehicle of garbage into the garbage storage chamber 14 of the garbage pyrolysis gasification furnace on the feeding platform, and then open the isolation door 18 to allow the garbage to fall into the garbage drying chamber 11 of the furnace;

[0096] S3, open the boiler door of the garbage pyrolysis gasification furnace, turn on the oxygen blower 21 and the flue gas induced draft fan and ignite them, adjust the oxygen supply air volume and induced draft volume, and the volume ratio of the oxygen supply air volume to the induced draft volume is in the range of 0.3 to 0.4;

[0097] S4, according to the air volume of the smoke pipe 51, the second smoke pipe 52 and the third smoke pipe 53 and the temperature data of the air inlet surround 510 at the upper end of the garbage combustion chamber 13, the garbage pyrolysis chamber 12, the garbage drying chamber 11 and the garbage storage chamber 14, respectively adjust the air volume of the smoke pipe 1 51, the second smoke pipe 52 and the third smoke pipe 53 connected to the air inlet surround 510 at the upper end of the garbage pyrolysis chamber 12, the garbage drying chamber 11 and the garbage storage chamber 14; at this time, the garbage pyrolysis gas The temperature of the pyrolysis furnace is usually about 1100°C in the garbage combustion chamber, and up to 1300°C or more. The temperature of the flue gas introduced into the flue gas pipe 1 by the air inlet surround 510 at the upper end of the garbage pyrolysis chamber 12 is 350°C to 450°C. The temperature of the flue gas introduced into the flue gas pipe 2 by the air inlet surround 510 at the upper end of the garbage drying chamber 11 is 200°C to 350°C. The temperature of the flue gas introduced into the flue gas pipe 3 by the air inlet surround 510 at the upper end of the garbage storage chamber 14 is 150°C to 250°C.

[0098] S5. When the waste pyrolysis and gasification furnace reaches the design reference temperature, the waste pyrolysis and gasification in the waste pyrolysis and gasification furnace has generated enough combustible gas for combustion. At this time, the flue gas combustion device starts the oxygen blower to introduce oxygen into the flue gas combustion chamber 50, the flue gas igniter ignites, and the flue gas starts to burn; at the same time, the sprayer of the flue gas purification device starts, and the flue gas spray pipe starts to spray, so as to realize the spray purification of the flue gas entering the flue gas purification device;

[0099] S6, observe the burning of garbage in the garbage combustion chamber. When the garbage embers fall and the fire center of the garbage combustion moves upward, the spiral slag discharger 64 discharges slag. The spiral slag discharger 64 discharges slag at intervals, so that the garbage in the garbage combustion chamber 13 is fully burned in a relatively static state during the interval time.

[0100] Adjust the fan speed, fan valve and exhaust valve according to the amount of garbage to control the combustion speed and ensure that the flame does not go out before new garbage arrives;

[0101] S7, add garbage. When all the garbage in the garbage storage chamber 14 in the furnace falls below the garbage drying chamber 11, the isolation door 15 can be closed, and the furnace top cover 18 can be opened to replenish and add garbage to the furnace. When there is still garbage in the garbage storage chamber 14, garbage is generally not added. When new garbage takes a long time to arrive at the factory or the new garbage increases, the combustion speed can be controlled by adjusting the fan speed, fan valve and exhaust valve, or the machine can be shut down and simmered, or the combustion can be appropriately accelerated. To restart the garbage pyrolysis gasification furnace for combustion, it is only necessary to re-ignite the flue gas combustion device. The main furnace of the garbage pyrolysis gasification furnace is closed, and a long and narrow chamber is formed by the slag bin 63 and the ash bin 610. The ash layer is thick and the air permeability is very low. The garbage combustion chamber 13 is filled with a large amount of carbonized garbage. At this time, the garbage combustion chamber 13 is in a trace oxygen state, and the furnace fire can be kept for several weeks.

[0102] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A method for treating waste by pyrolysis and gasification, using waste pyrolysis and gasification equipment, wherein the waste pyrolysis and gasification equipment is connected and arranged in the order of flue gas circulation, and comprises a waste pyrolysis and gasification furnace, a flue gas combustion device, a flue gas purification device, an air induction device and an exhaust device, characterized in that: The following steps are included: The garbage is put into the garbage pyrolysis gasification furnace for storage, drying, pyrolysis gasification and combustion treatment; The flue gas from the garbage pyrolysis gasification furnace is introduced into the flue gas combustion device for secondary combustion; Introducing the flue gas after secondary combustion into a flue gas purification device for purification; The flue gas introduced into the flue gas combustion device for combustion is introduced from the upper end of the garbage storage chamber, the upper end of the garbage drying chamber, and the upper end of the garbage pyrolysis chamber of the garbage pyrolysis gasification furnace, and is introduced into the flue gas combustion device together with oxygen for mixed combustion; The flue gas combustion device comprises a flue gas combustion chamber, a flue gas pipe 1, a flue gas pipe 2 and a flue gas pipe 3, wherein the flue gas pipe 1 is connected to the upper end of the garbage pyrolysis chamber, the flue gas pipe 2 is connected to the upper end of the garbage drying chamber, and the flue gas pipe 3 is connected to the upper end of the garbage storage chamber. The flue gas pipe 1, the flue gas pipe 2 and the flue gas pipe 3 are respectively provided with regulating valves for regulating the flow of flue gas; the bottom of the flue gas combustion chamber is provided with a flue gas cavity, an oxygen distribution cavity and a dust cavity, wherein the dust cavity is located at the bottom center of the flue gas combustion chamber, and the oxygen distribution cavity and the flue gas cavity are respectively provided with a flue gas cavity, an oxygen distribution cavity and a dust cavity, wherein the dust cavity is located at the bottom center of the flue gas combustion chamber, and the oxygen distribution cavity and the flue gas cavity are respectively provided with a flue gas cavity, an oxygen distribution cavity and a dust cavity, wherein the dust cavity and the dust ... The dust chamber is concentrically sleeved from inside to outside on the periphery of the dust chamber, the dust chamber is a cylindrical chamber structure, a sealing flange cover that can be opened and closed is arranged at the bottom, and the top is open and connected to the inside of the smoke combustion chamber. The smoke chamber and the oxygen distribution chamber are annular cylindrical chamber structures, and the smoke chamber is separated into smoke chamber one and smoke chamber two by a smoke chamber partition. The tops of the oxygen distribution chamber, smoke chamber one and smoke chamber two are connected to the inside of the smoke combustion chamber, smoke pipe one is connected to smoke chamber one, and the smoke pipe two and smoke pipe three are connected to smoke chamber two.

2. The method for treating garbage by pyrolysis and gasification according to claim 1, characterized in that: The flue gas introduced from the upper end of the garbage storage chamber and the upper end of the garbage drying chamber of the garbage pyrolysis gasification furnace is first introduced into the flue gas chamber 2, and the flue gas introduced from the upper end of the garbage pyrolysis chamber of the garbage pyrolysis gasification furnace is first introduced into the flue gas chamber 1, and then the flue gas in the flue gas chamber 1 and the flue gas in the flue gas chamber 2 enter the flue gas combustion chamber of the flue gas combustion device together for mixed combustion.

3. The method for treating garbage by pyrolysis and gasification according to claim 1, characterized in that: The flue gas introduced from the garbage storage room and the garbage drying room of the garbage pyrolysis gasification furnace is first condensed and dehydrated before entering the flue gas combustion device for mixed combustion with oxygen.

4. The method for treating garbage by pyrolysis and gasification according to claim 1, characterized in that: A smoke disperser is arranged on the top of the smoke cavity to communicate with the interior of the smoke combustion chamber, and the smoke disperser includes a plurality of smoke dispersion pipes distributed around a circle, the lower portion of the smoke dispersion pipe is arranged upright, and the upper portion is inclined at an elevation angle of 30° to 60°, and the vertical projection of the upper tail end of each of the smoke dispersion pipes is located on the tangent line of the circle where the smoke dispersion pipe is located, and the upper tail ends of the plurality of smoke dispersion pipes distributed around the circle are all distributed clockwise or counterclockwise at the same time; An oxygen disperser is provided at the top of the oxygen distribution chamber to communicate with the interior of the flue gas combustion chamber. The oxygen disperser includes a plurality of oxygen dispersion tubes distributed around a circle. The lower portion of the oxygen dispersion tubes is uprightly arranged, and the upper portion is inclined at an elevation angle of 30° to 60°. The vertical projection of the upper tail end of each of the oxygen dispersion tubes is located on the tangent line of the circle where the oxygen dispersion tube is located, and the upper tail ends of the plurality of oxygen dispersion tubes distributed around the circle are all distributed clockwise or counterclockwise at the same time.

5. The method for treating garbage by pyrolysis and gasification according to claim 1, characterized in that: An air inlet surround portion surrounding the garbage pyrolysis gasification furnace is arranged at the ends of the flue gas pipe one, the flue gas pipe two and the flue gas pipe three connected to the garbage pyrolysis gasification furnace, and a plurality of air inlet through holes connected to the interior of the garbage pyrolysis gasification furnace are opened on the inner circumference of the air inlet surround portion; each of the air inlet surround portions is respectively provided with a flue gas branch pipe connected to the air inlet surround portion on two opposite sides, and the two flue gas branch pipes are symmetrically arranged and merged to connect the flue gas pipe one, the flue gas pipe two or the flue gas pipe three.

6. The method for treating garbage by pyrolysis and gasification according to claim 1, characterized in that: The second and third flue gas pipes are equipped with a condensation and dehydration device for realizing condensation and dehydration of flue gas, the condensation and dehydration device includes a cylinder, a collecting chamber is arranged at the upper part of the cylinder, a condensation inlet one and a condensation inlet two are arranged at the top of the collecting chamber, a circulating water chamber is arranged in the middle part of the cylinder, a sewage chamber is arranged at the lower part of the cylinder, a plurality of condensation unit smoke pipes passing through the circulating water chamber are connected between the collecting chamber and the sewage chamber, the collecting chamber is connected with the second flue gas pipe through the condensation inlet one, so that the smoke can enter the collecting chamber from the second flue gas pipe in front and pass through the condensation unit smoke pipe and the sewage chamber in sequence and enter the second flue gas chamber after going out of the sewage chamber, the collecting chamber is connected with the third flue gas pipe through the condensation inlet two, so that the smoke can enter the collecting chamber from the third flue gas pipe in front and pass through the condensation unit smoke pipe and the sewage chamber in sequence and enter the second flue gas chamber after going out of the sewage chamber.

7. The method for treating garbage by pyrolysis and gasification according to claim 1, characterized in that: A slag receiving and ash discharging device is arranged directly below the garbage combustion chamber, and the slag receiving and ash discharging device includes a slag receiving chamber and an ash discharging chamber, wherein the garbage combustion chamber is an elliptical cylindrical structure, the slag receiving chamber is an inverted quadrangular pyramid chamber shape with a rectangular bottom and top surface, and the ash discharging chamber is a rectangular parallelepiped chamber shape; at least one vertically arranged slag receiving chamber partition is arranged in the slag receiving chamber to divide the slag receiving chamber into more than two slag receiving bins arranged side by side laterally, and the bottom surface opening of each slag receiving bin is a rectangular shape of the same shape, and the bottom opening of the garbage combustion chamber is directly connected to the slag receiving chamber. chamber, and the projection areas of the bottom opening of the elliptical cylindrical garbage combustion chamber vertically projected to the top openings of each of the slag receiving bins are equal; the ash discharging chamber is provided with upright ash discharging chamber partitions whose number is the same as the slag receiving chamber partitions to divide the ash discharging chamber into ash discharging bins which are horizontally arranged side by side and whose number is the same as the slag receiving bins, and the top surfaces of the ash discharging chamber partitions correspond one to one with the bottom surfaces of the slag receiving chamber partitions; the ash discharging bins are rectangular chamber structures with the same shape, and the ash discharging bins are provided with spiral slag discharging machines for evenly discharging the ash and slag in each of the ash discharging bins.

8. The method for treating garbage by pyrolysis and gasification according to claim 1, characterized in that: The smoke purification device includes a smoke purification chamber, a smoke dispersion chamber and a smoke spray chamber. A smoke dispersion chamber is arranged on the top of one end of the smoke purification chamber, and a smoke spray chamber is arranged on the top of the other end. A smoke purification inlet is arranged on the top of the smoke dispersion chamber, and the bottom is connected with the smoke purification chamber through a plurality of smoke dispersion outlets. The bottom of the smoke spray chamber is connected with the top of the smoke purification chamber, a smoke purification outlet is arranged on the top of the smoke spray chamber, and a smoke spray pipe is arranged on the upper part of the smoke spray chamber; an L-shaped pipe is arranged in the smoke purification chamber, and the L-shaped pipe is located below the smoke spray chamber, the upright part of the L-shaped pipe opens upward, and the horizontal part passes through the smoke purification chamber.

9. The method for treating garbage by pyrolysis and gasification according to claim 8, characterized in that: A smoke diversion chamber is arranged on the top of the middle part of the smoke purification chamber, and the bottom of the smoke diversion chamber is connected with the smoke purification chamber through a smoke diversion inlet at a position close to the smoke dispersion chamber, and the bottom of the smoke diversion chamber is connected with the smoke purification chamber through a smoke diversion outlet at a position away from the smoke dispersion chamber. A smoke baffle is arranged in the smoke purification chamber, and the smoke baffle is located between the smoke diversion inlet and the smoke diversion outlet. The smoke baffle is arranged vertically downward from the top of the smoke purification chamber to block the smoke from passing there.

10. The method for treating garbage by pyrolysis and gasification according to claim 9, characterized in that: A plurality of straight smoke dispersion tubes are arranged at the bottom of the smoke dispersion chamber, and the straight smoke dispersion tubes are downwardly penetrated into the smoke purification chamber to form a smoke dispersion outlet; a plurality of straight smoke diversion tubes are arranged at the bottom of the smoke diversion chamber, and the straight smoke diversion tubes are downwardly penetrated into the smoke purification chamber to form a smoke diversion inlet; a plurality of side dispersion openings penetrating the side wall are circumferentially opened at the bottom side wall of each of the straight smoke dispersion tubes and each of the straight smoke diversion tubes, and the side dispersion openings extend to the bottom end of the straight smoke dispersion tube or the straight smoke diversion tube.

11. The method for treating garbage by pyrolysis and gasification according to claim 10, characterized in that: A smoke fence is arranged downward from the top of the smoke purification chamber, and is located behind the smoke dispersion straight pipe and the smoke diversion straight pipe in the direction of smoke flow; the smoke fence includes multiple rows of vertically arranged rods arranged in parallel for cutting smoke bubbles, and the multiple rows of rods are staggered.

12. The method for treating garbage by pyrolysis and gasification according to claim 8, characterized in that: An oil purification chamber is arranged beside the flue gas purification chamber, the transverse part of the L-shaped pipe is connected with the oil purification chamber after passing through the flue gas purification chamber, a flue gas return pipe is arranged on the top of the oil purification chamber and is connected with the flue gas spray chamber, the bottom of the oil purification chamber is a conical funnel-shaped structure with a larger top and a smaller bottom, and a sewage discharge pipe is arranged at the bottom of the oil purification chamber; an oil discharge pipe is arranged on the side wall of the middle and upper half of the oil purification chamber; A purification solution chamber is arranged beside the oil purification chamber; a connecting pipe is arranged in the middle and lower part of the purification solution chamber to communicate with the oil purification chamber so that the oil and sewage in the smoke spray chamber overflow into the oil purification chamber for purification and then enter the purification solution chamber; A sewage oil pipe is arranged on the side wall of the upper and middle part of the purified solution cavity, a purified solution output pipe is arranged on the side wall of the lower part of the purified solution cavity, a sprayer is arranged on the purified solution output pipe and connected to the flue gas spray pipe, and a flue gas reflux pipe is arranged on the top of the purified solution cavity and communicates with the flue gas spray chamber.

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