Flue gas combustion device

Abstract

The invention discloses a flue gas combustion device, comprising a flue gas combustion chamber, a flue gas chamber, an oxygen distribution chamber and a dust chamber are arranged at the bottom of the flue gas combustion chamber, the flue gas chamber is divided into a flue gas chamber 1 and a flue gas chamber 2 by a flue gas chamber partition, the tops of the oxygen distribution chamber, the flue gas chamber 1 and the flue gas chamber 2 are connected with the inside of the flue gas combustion chamber, the flue gas chamber 1 is connected with the upper end of the pyrolysis chamber of the garbage pyrolysis gasification furnace through a flue gas pipe 1, the flue gas chamber 2 is connected with the upper end of the drying chamber of the garbage pyrolysis gasification furnace through a flue gas pipe 2, and the flue gas chamber 2 is connected with the upper end of the storage chamber of the garbage pyrolysis gasification furnace through a flue gas pipe 3. The invention draws flue gas from the pyrolysis chamber, the drying chamber and the storage chamber of the garbage pyrolysis gasification furnace respectively through the flue gas pipe 1, the flue gas pipe 2 and the flue gas pipe 3, and then mixes and burns in the flue gas combustion chamber, and completely burns with excess oxygen, the temperature in the furnace is stable and high temperature, and toxic and harmful gases such as dioxins are basically burned out, which effectively ensures that the flue gas meets the standard and is cleanly discharged.

Description

Technical Field

[0001] The invention relates to the technical field of garbage disposal equipment, and in particular to a smoke combustion device. Background Art

[0002] With the continuous improvement of living standards, people's quality of life has made great progress accordingly. At the same time, the amount of domestic waste generated is also increasing. The daily treatment of a large amount of urban and rural domestic waste, especially the small and medium-sized urban and rural domestic waste treatment has become a difficult problem.

[0003] At present, one way to deal with domestic waste is to carry out centralized landfill treatment. However, landfill produces garbage odor and leachate, which seriously pollutes the environment. At the same time, landfill occupies a large amount of land. With people's high demands for the environment, land resources are becoming increasingly scarce, the demand for landfills is increasing, and the landfill method is difficult to sustain. Moreover, landfill is only a temporary treatment method and cannot eliminate the garbage. It takes dozens or even hundreds of years for the garbage to degrade on its own. The cost of water and soil pollution caused by landfill is too high. The environmental pollution problem of domestic waste landfill is prominent, and the risk hazards are prominent. The pollution control facilities have become "pollution sources".

[0004] One treatment method is the traditional incineration method. Although it can handle a large amount of garbage, it has high requirements for garbage sorting. The garbage needs to stay in the factory and even needs pre-treatment such as crushing and filtering. In addition, due to the focus on power generation, it is difficult to form a high temperature above 850℃ for garbage incineration, which produces a large amount of toxic and harmful gases such as dioxins. Before garbage incineration, a large amount of garbage leachate and garbage odor are also produced. Because it is difficult to form a stable high temperature above 850℃ for garbage incineration, the garbage incineration is not thorough, and the slag also becomes a harmful and hazardous solid waste. Therefore, garbage incineration is highly polluting and it is difficult to achieve truly standard emissions.

[0005] It is difficult for the existing garbage pyrolysis gasification furnace and garbage incinerator to completely burn the flue gas. If the unburned flue gas is directly discharged or purified, firstly, it will seriously pollute the environment, secondly, it is difficult to purify it directly and the cost is high, and thirdly, the combustible flue gas is not fully utilized as a resource, resulting in waste. Since there are enough combustible gases in the flue gas of the garbage pyrolysis gasification furnace and the garbage incinerator, a flue gas combustion device (or a secondary combustion chamber) is often provided to perform secondary combustion on the flue gas. The existing garbage pyrolysis gasification furnace and the garbage incinerator usually have only one smoke outlet and too few smoke outlets. The existing flue gas combustion device of the garbage pyrolysis gasification furnace and the garbage incinerator also introduces flue gas only at one smoke outlet of the garbage pyrolysis gasification furnace and the garbage incinerator. Such flue gas often has high humidity and high water content, making it difficult for the flue gas combustion device to burn normally, and the combustion is unstable, unclean and inefficient. Summary of the invention

[0006] In view of the above shortcomings, the present invention provides a flue gas combustion device, which can solve the problems that the existing flue gas is difficult to burn, burns uncleanly and has low efficiency.

[0007] In order to achieve the above object, the present invention adopts the following technical scheme:

[0008] A flue gas combustion device comprises a flue gas combustion chamber, wherein the flue gas combustion chamber is equipped with an igniter, and the flue gas combustion chamber is provided with a flue gas outlet for discharging the flue gas after combustion, and 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 concentrically sleeved on the periphery of the dust cavity from the inside to the outside in sequence, and the dust cavity is a cylindrical cavity structure, and an openable and closable sealing flange cover is provided at the bottom, and an open top is provided and connected to the inside of the flue gas combustion chamber, and the flue gas cavity and the oxygen distribution cavity are The annular cylindrical chamber structure, the smoke chamber is divided 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; the smoke chamber one is connected to the upper end of the pyrolysis chamber of the garbage pyrolysis gasification furnace through smoke pipe one, the smoke chamber two is connected to the upper end of the drying chamber of the garbage pyrolysis gasification furnace through smoke pipe two, the smoke chamber two is connected to the upper end of the storage chamber of the garbage pyrolysis gasification furnace through smoke pipe three, and the smoke pipe one, smoke pipe two and smoke pipe three are respectively provided with regulating valves for regulating the flow of smoke.

[0009] 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 pipes is uprightly arranged, 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.

[0010] Furthermore, a flue gas disperser is provided at the top of the oxygen distribution chamber to communicate with the interior of the flue gas combustion chamber, and 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°, and 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.

[0011] Furthermore, a heat exchange chamber is arranged on the upper part of the flue gas combustion chamber, and the heat exchange chamber is filled with circulating water; a flue gas collecting chamber and an oxygen heating chamber are arranged on the top of the heat exchange chamber, and the oxygen heating chamber surrounds the periphery of the flue gas collecting chamber; the flue gas combustion chamber is provided with a plurality of flue gas heat exchange pipes passing through the heat exchange chamber and connected to the flue gas collecting chamber, and the flue gas outlet is arranged at the top of the flue gas collecting chamber; a vertical partition is arranged in the oxygen heating chamber to separate the oxygen heating chamber there, and the oxygen heating chamber is provided with an oxygen input port on one side of the partition, and an oxygen output port on the other side of the partition, and the oxygen output port is connected to the oxygen distribution chamber.

[0012] Furthermore, an air inlet surround portion surrounding the garbage pyrolysis gasification furnace is provided at the ends of the flue gas pipe 1, the flue gas pipe 2 and the flue gas pipe 3 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 provided on the inner circumference of the air inlet surround portion.

[0013] Furthermore, each of the air inlet surround parts is provided with a smoke branch pipe connected to the air inlet surround part on two opposite sides, and the two smoke branch pipes are symmetrically arranged and merged to connect smoke pipe one, smoke pipe two or smoke pipe three.

[0014] Furthermore, the second flue gas pipe and the third flue gas pipe are equipped with condensation and dehydration devices for achieving condensation and dehydration of flue gas.

[0015] Furthermore, the condensation and dehydration device includes a cylinder, a collecting chamber is arranged at the upper part of the cylinder, condensation inlet one and 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, and a sewage chamber is arranged at the lower part of the cylinder, and 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 smoke pipe two through the condensation inlet one, so that the smoke can enter the collecting chamber from the smoke pipe two in front and pass through the condensation unit smoke pipe and the sewage chamber in sequence and enter the smoke chamber two after going out of the sewage chamber, and the collecting chamber is connected with the smoke pipe three through the condensation inlet two, so that the smoke can enter the collecting chamber from the smoke pipe three in front and pass through the condensation unit smoke pipe and the sewage chamber in sequence and enter the smoke chamber two after going out of the sewage chamber.

[0016] Furthermore, a smoke collecting tank is arranged on the pipeline between the condensation and dehydration device and the second smoke chamber; the smoke collecting tank is connected to the combustion chamber of the garbage pyrolysis gasification furnace by arranging a branch pipe and an induced draft device.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The smoke combustion device of the present invention is provided with a smoke chamber 1 and a smoke chamber 2. The smoke is drawn out from the garbage pyrolysis chamber of the garbage pyrolysis gasification furnace through a smoke pipe 1 and enters the smoke chamber 1. The smoke is drawn out from the garbage drying chamber of the garbage pyrolysis gasification furnace through a smoke pipe 2 and enters the smoke chamber 2. The smoke is drawn out from the garbage storage chamber of the garbage pyrolysis gasification furnace through a smoke pipe 3 and enters the smoke chamber 2. The two kinds of smoke drawn out from the garbage drying chamber and the garbage storage chamber have a high moisture content, and direct combustion affects the quality and effect of combustion. However, the smoke in the garbage pyrolysis chamber has a high moisture content, and the smoke in the garbage drying chamber and the garbage storage chamber has a high moisture content, and the direct combustion affects the quality and effect of combustion. The temperature of the introduced flue gas is relatively high. When the flue gas meets sufficient oxygen, it is very easy to burn. It first enters the flue gas chamber 1, then enters the flue gas combustion chamber, and enters the flue gas combustion chamber together with the flue gas from the flue gas chamber 2 for mixed combustion. At the same time, excess oxygen is transported to the oxygen distribution chamber and enters the flue gas combustion chamber. After ignition, the flue gas and excess oxygen are completely burned. The combustion temperature in the flue gas combustion chamber 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.

[0019] 2. At the same time, by respectively drawing out flue gas from the garbage pyrolysis chamber, drying chamber and storage chamber of the garbage pyrolysis gasification furnace and burning it in the flue gas combustion chamber, flue gas regulation can be performed, and the proportion of flue gas introduced from the garbage pyrolysis chamber, drying chamber and storage chamber of the garbage pyrolysis gasification furnace is adjusted according to the combustion conditions to help stable and efficient combustion, and drawing out flue gas from the garbage pyrolysis chamber, drying chamber and storage chamber of the garbage pyrolysis gasification furnace respectively is helpful to regulate and control the garbage combustion, pyrolysis and drying of the garbage combustion chamber, garbage pyrolysis chamber, garbage drying chamber and garbage storage chamber of the garbage pyrolysis gasification furnace;

[0020] 3. By setting the smoke dispersion tube and oxygen dispersion tube with the same elevation angle and rotation direction, the smoke and oxygen enter the smoke combustion chamber 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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.

[0022] Figure 1 It is a structural schematic diagram of the smoke combustion device of the present invention;

[0023] Figure 2 It is a partial cross-sectional schematic diagram of the smoke chamber, oxygen distribution chamber and dust chamber of the present invention;

[0024] Figure 3 It is a transverse cross-sectional schematic diagram of the smoke chamber, oxygen distribution chamber and dust chamber of the present invention;

[0025] Figure 4 It is a schematic structural diagram of the condensation and dehydration device of the present invention.

[0026] Among them, the marks shown in the figure are: 50-smoke combustion chamber; 503-smoke heat exchange tube; 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 cavity two; 543-smoke dispersion tube; 544 smoke cavity partition; 55-oxygen distribution cavity; 551-oxygen dispersion tube; 56-dust cavity; 561-sealing flange cover ;57-condensation and dehydration device;571-cylinder;572-collecting chamber;573-condensation inlet one;574-condensation inlet two;575-circulating water chamber;576-sewage chamber;577-condensation unit smoke pipe;58-smoke collecting 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-smoke collection tank. DETAILED DESCRIPTION

[0027] 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.

[0028] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the term "inside" etc. is based on the orientation or positional relationship shown in the accompanying drawings, or is the orientation or positional relationship in which the product of the invention is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Please refer to Figures 1 to 4The preferred embodiment of the present invention provides a flue gas combustion device, including a flue gas combustion chamber 50, in which an igniter is provided for ignition to realize flue gas combustion, and a flue gas outlet 504 is provided on the flue gas combustion chamber 50 for discharging the flue gas after combustion, and the flue gas outlet 504 can be connected to an induced draft fan when in use to help lead out the flue gas after combustion. A flue gas cavity 54, an oxygen distribution cavity 55 and a dust cavity 56 are provided at the bottom of the flue gas combustion chamber 50. The flue gas combustion chamber 50 is in the shape of a double-layer inverted truncated cone structure, and the interlayer of the truncated cone 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 flue gas 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 flue gas combustion chamber 50, and the oxygen distribution cavity 55 and the flue gas cavity 54 are concentrically sleeved on the outer periphery of the dust cavity 56 from the inside to the outside. 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 pyrolysis chamber of the garbage pyrolysis gasification furnace 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 pyrolysis chamber of the garbage pyrolysis gasification furnace. The smoke chamber 2 542 is connected to the upper end of the drying chamber of the garbage pyrolysis gasification furnace 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 drying chamber of the garbage pyrolysis gasification furnace. The smoke chamber 2 542 is connected to the upper end of the storage chamber of the garbage pyrolysis gasification furnace 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 storage chamber of the garbage pyrolysis gasification furnace. 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, the garbage pyrolysis chamber, the garbage drying chamber and the garbage storage chamber 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.

[0031] The existing flue gas combustion devices supporting garbage pyrolysis gasification furnaces and garbage incinerators mainly arrange a flue gas pipe at a position and introduce the flue gas into the flue gas combustion device through the flue gas pipe for combustion. There are some shortcomings in this type of combustion device and its implementation method. It is manifested in that since there are multiple chambers in the garbage pyrolysis gasification furnace and the flue gas pipe is only arranged at a certain position, it is difficult to regulate the garbage treatment in each chamber of the garbage pyrolysis gasification furnace. On the other hand, since the flue gas temperature and humidity in the drying zone and the pyrolysis zone of the garbage pyrolysis gasification furnace are different, the flue gas temperature in the pyrolysis zone is high and the humidity is low, and the flue gas temperature in the drying zone is relatively low and the humidity is high. After a long period of mixing, the flue gas is difficult to burn, and the combustion is not clean and the efficiency is low.

[0032] The smoke combustion device of the present invention is provided with a smoke chamber 1 541 and a smoke chamber 2 542. The smoke is drawn out from the garbage pyrolysis chamber of the garbage pyrolysis gasification furnace through a smoke pipe 1 51 and enters the smoke chamber 1 541. The smoke temperature there is generally 350°C to 450°C. The smoke is very easy to burn when it meets sufficient oxygen. The smoke is drawn out from the garbage drying chamber of the garbage pyrolysis gasification furnace through a smoke pipe 2 52 and enters the smoke chamber 2 542. The smoke temperature there is generally 250°C to 350°C. The smoke is drawn out from the garbage storage chamber of the garbage pyrolysis gasification furnace through a smoke pipe 3 53 and enters the smoke chamber 2 542. The smoke temperature there is generally 150°C to 280°C. The garbage drying chamber and the garbage storage chamber are connected to the smoke chamber 2 542. The two types of flue gas introduced from the storage chamber have a high moisture content, and direct combustion affects the quality and effect of combustion. However, the temperature of the flue gas introduced from the garbage pyrolysis chamber 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, drying chamber and storage chamber of the garbage pyrolysis gasification furnace 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, drying chamber and storage chamber of the garbage pyrolysis gasification furnace is adjusted to facilitate stable and efficient combustion. Moreover, drawing out smoke from the garbage pyrolysis chamber, drying chamber and storage chamber of the garbage pyrolysis gasification furnace respectively 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.

[0033] 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.

[0034] 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.

[0035] 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 garbage pyrolysis gasification furnace, an air inlet surrounding portion 510 surrounding the garbage pyrolysis gasification furnace is provided, and a plurality of air inlet holes connected to the inside of the garbage pyrolysis gasification furnace are provided on the inner circumference of the air inlet surrounding portion 510. By surrounding the garbage pyrolysis gasification furnace with the air inlet surrounding portion 510 and providing a plurality of evenly distributed air inlet holes, more and wider entrances to the flue gas pipe 1 51, the flue gas pipe 2 52 and the flue gas pipe 3 53 are provided for the drying chamber, the pyrolysis chamber and the storage chamber of the garbage pyrolysis gasification furnace, which can help to achieve better entry of the flue gas from the drying chamber, the pyrolysis chamber and the storage chamber of the garbage pyrolysis gasification furnace into the flue gas pipe 1 51, the flue gas pipe 2 52 and the flue gas pipe 3 53, improve the efficiency of the flue gas entry, and help the combustion of the flue gas. Furthermore, each air inlet surround 510 is 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 to the smoke pipe 1 51 or the smoke pipe 2 52 or the smoke pipe 3 53. Specifically, the air inlet surround 510 corresponding to the storage chamber is 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 have equal lengths, and are connected to the smoke pipe 3 53 after merging, so as to help the smoke in the storage chamber to enter the air inlet surround 510 evenly; the air inlet surround 510 corresponding to the drying chamber is 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 have equal lengths, and are connected to the smoke pipe 3 53 after merging, so as to help the smoke in the storage chamber to enter the air inlet surround 510 evenly; The gas branch pipes 512 are symmetrically arranged with equal lengths, and are connected to the second smoke pipe 52 after merging, thereby helping the smoke in the drying chamber to evenly enter the air inlet surround 510; corresponding to the air inlet surround 510 of the pyrolysis chamber, a smoke branch pipe 512 connected to the air inlet surround 510 is respectively arranged on the opposite sides, and the two smoke branch pipes 512 are symmetrically arranged with equal lengths, and are connected to the first smoke pipe 51 after merging, thereby helping the smoke in the pyrolysis chamber to evenly enter the air inlet surround 510.

[0036] 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.

[0037] 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 play a buffering role on the other hand; the smoke collecting tank 521 can also be connected to the garbage combustion chamber of the garbage pyrolysis gasification furnace by setting a branch pipe and a draft 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 of the garbage pyrolysis gasification furnace to assist combustion.

[0038] 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 smoke combustion device, comprising a smoke combustion chamber (50), wherein an igniter is provided in the smoke combustion chamber (50), and a smoke outlet (504) is provided on the smoke combustion chamber (50) for discharging smoke after combustion, characterized in that: The bottom of the smoke combustion chamber (50) is provided with a smoke chamber (54), an oxygen distribution chamber (55) and a dust chamber (56); the dust chamber (56) is located at the bottom center of the smoke combustion chamber (50); the oxygen distribution chamber (55) and the smoke chamber (54) are concentrically sleeved on the outer periphery of the dust chamber (56) from the inside to the outside in sequence; the dust chamber (56) is a cylindrical chamber structure; a sealing flange cover (561) that can be opened and closed is provided at the bottom; the top is open and connected to the inside of the smoke combustion chamber (50); the smoke chamber (54) and the oxygen distribution chamber (55) are annular cylindrical chamber structures; the smoke chamber (54) is separated into a smoke chamber one (544) by a smoke chamber partition (544) and a smoke chamber two (545). 1) and a second smoke chamber (542), the oxygen distribution chamber (55), the top of the smoke chamber (541) and the second smoke chamber (542) are connected to the inside of the smoke combustion chamber (50); the smoke chamber (541) is connected to the upper end of the pyrolysis chamber of the garbage pyrolysis gasification furnace through the smoke pipe (51), the smoke chamber (542) is connected to the upper end of the drying chamber of the garbage pyrolysis gasification furnace through the smoke pipe (52), and the smoke chamber (542) is connected to the upper end of the storage chamber of the garbage pyrolysis gasification furnace through the smoke pipe (53), and the smoke pipe (51), the second smoke pipe (52) and the third smoke pipe (53) are respectively provided with regulating valves (513) for regulating the flow of smoke; A smoke disperser is arranged at the top of the smoke cavity (54) to communicate with the interior of the smoke combustion chamber (50), and the smoke disperser includes a plurality of smoke dispersion pipes (543) distributed around a circle, the lower portion of the smoke dispersion pipe (543) 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 (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 circle are all distributed clockwise or counterclockwise at the same time; An oxygen disperser is arranged at the top of the oxygen distribution chamber (55) to communicate with the inside of the flue gas combustion chamber (50), and the oxygen disperser includes a plurality of oxygen dispersion pipes (551) distributed around a circle, the lower part of the oxygen dispersion pipe (551) is arranged upright, and the upper part is inclined at an elevation angle of 30° to 60°, and the vertical projection of the upper tail end of each of the oxygen dispersion pipes (551) is located on the tangent line of the circle where the oxygen dispersion pipe (551) is located, and the upper tail ends of the plurality of oxygen dispersion pipes (551) distributed around the circle are all distributed clockwise or counterclockwise at the same time; An air inlet surrounding portion (510) surrounding the garbage pyrolysis gasification furnace is provided at the ends of the smoke pipe 1 (51), the smoke pipe 2 (52) and the smoke pipe 3 (53) connected to the garbage pyrolysis gasification furnace, and a plurality of air inlet holes communicating with the interior of the garbage pyrolysis gasification furnace are provided on the inner circumference of the air inlet surrounding portion (510); Each of the air inlet surround parts (510) is provided with a smoke branch pipe (512) connected to the air inlet surround part (510) on two opposite sides, and the two smoke branch pipes (512) are symmetrically arranged and merge to connect to smoke pipe one (51) or smoke pipe two (52) or smoke pipe three (53).

2. The smoke combustion device according to claim 1, characterized in that: A heat exchange chamber (505) is arranged at the top 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); the flue gas combustion chamber (50) is provided with a plurality of flue gas heat exchange pipes (503) passing through the heat exchange chamber (505) and communicating with the flue gas collecting chamber (58), and the flue gas outlet (504) is arranged at the top 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) at this location, 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 communicated with the oxygen distribution chamber (55).

3. The smoke combustion device according to claim 1, characterized in that: The second flue gas pipe (52) and the third flue gas pipe (53) are equipped with a condensation and dehydration device (57) for achieving condensation and dehydration of flue gas.

4. The smoke combustion device according to claim 3, characterized in that: The condensation and dehydration device (57) comprises a cylinder (571), a collecting chamber (572) is arranged at the upper part of the cylinder (571), a condensation inlet one (573) and a condensation inlet two (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), 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), and the collecting chamber (572) is connected to the smoke through the condensation inlet one (573). The second pipe (52) is connected so that the smoke can enter the collecting chamber (572) from the front smoke pipe (52) and pass through the condensing unit smoke pipe (577) and the sewage chamber (576) in sequence and then enter the second smoke chamber (542) after exiting from the sewage chamber (576). The collecting chamber (572) is connected with the third smoke pipe (53) through the condensing inlet (574) so ​​that the smoke can enter the collecting chamber (572) from the front smoke pipe (53) and pass through the condensing unit smoke pipe (577) and the sewage chamber (576) in sequence and then enter the second smoke chamber (542) after exiting from the sewage chamber (576).

5. The smoke combustion device according to claim 4, characterized in that: A smoke collecting tank (521) is provided on the pipeline between the condensation and dehydration device (57) and the second smoke chamber (542); the smoke collecting tank (521) is connected to the combustion chamber of the garbage pyrolysis gasification furnace via a branch pipe and an air induction device.

Images