An integrated containerized waste combustion treatment system

Abstract

The present invention discloses an integrated containerized waste combustion treatment system, which includes an upper container body (1) and a lower container body (2) connected in an upper and lower stacked manner. Inside the upper container body (1), a waste feeding assembly, a combustion furnace assembly, a quenching heat exchanger (3), and a bag filter (4) are successively arranged from front to back; inside the lower container body (2), a filtrate tank (5) below the waste feeding assembly, a cooling water tank (6) and an ash slag tank (7) below the combustion furnace assembly, and a dust collection box (8) located below the bag filter (4) are successively arranged from front to back. The present invention can not only harmlessly treat waste efficiently, but also has a compact overall structure, can be transported as a whole machine, has no civil engineering requirements, and does not require on-site installation. It can not only reduce the installation cost, but also be easy to promote and apply, and is especially suitable for some small and medium-sized waste combustion treatment plants.

Description

Technical Field

[0001] The present invention relates to an integrated containerized waste combustion treatment system, belonging to the technical field of waste environmental protection treatment. Background Art

[0002] At present, the main waste treatment methods are landfilling and incineration. Although the cost of waste landfilling is relatively low, this method not only fails to realize the resource treatment of waste, but also occupies a large amount of land.

[0003] However, the waste incineration method has high environmental protection requirements for fly ash and tail gas, and the installation of most incinerators and tail gas purification devices requires a large amount of civil engineering structure to support. It not only occupies a large area, but also has complex installation, is not easy to transport and move as a whole, and basically requires on-site installation and commissioning, making it not easy to promote and apply. Summary of the Invention

[0004] The purpose of the present invention is to provide an integrated containerized waste combustion treatment system. It can not only harmlessly treat waste efficiently, but also has a compact overall structure, can be transported as a whole, has no civil engineering requirements, and does not require on-site installation. It can not only reduce the installation cost, but also is easy to promote and apply, especially suitable for some small and medium-sized waste combustion treatment plants.

[0005] The technical solution of the present invention: An integrated containerized waste combustion treatment system, characterized in that: it includes an upper container body and a lower container body connected in an upper and lower stacked manner. In the upper container body, a waste feeding component, a combustion furnace component, a quenching heat exchanger, and a bag filter are sequentially arranged from front to back; in the lower container body, a filtrate pool below the waste feeding component, a cooling water pool and an ash slag tank below the combustion furnace component, and a dust collection box below the bag filter are sequentially arranged from front to back.

[0006] In the above-mentioned integrated containerized waste combustion treatment system, the waste feeding component, the combustion furnace component, and the quenching heat exchanger are located on one side of the upper container body. On the other side of the upper container body, a multi-stage tail gas treatment tank and an auxiliary gasifier (generating gas by pyrolyzing high-calorific value waste, such as waste wood chips) are sequentially arranged from back to front. The lower end of the multi-stage tail gas treatment tank extends into the lower container body, and an alkali liquid pool (such as sodium hydroxide solution for spraying the desulfurization tank in the multi-stage tail gas treatment tank) is arranged in the lower container body below the auxiliary gasifier.

[0007] In the aforementioned integrated containerized waste combustion treatment system, an activated carbon absorption tower is arranged between the quenching heat exchanger and the bag filter for the preliminary absorption of harmful gases in the tail gas. The activated carbon dust that is easily carried out in the activated carbon absorption tower can also be removed in the bag filter, which can greatly reduce the treatment pressure of the subsequent multi-stage tail gas treatment tank.

[0008] In the aforementioned container-type integrated garbage combustion treatment system, the garbage feeding assembly includes a vertical feeding trough located in the upper container body, the upper end of the vertical feeding trough extends to the outside of the upper container body and is provided with a feeding port; the side of the vertical feeding trough is provided with a transverse pushing trough extending to the outside of the front end of the upper container body, and the transverse pushing trough is provided with a pushing blocking block and a pushing power mechanism; the bottom of the vertical feeding trough is provided with a filter plate. When the pushing blocking block is pushed against the connecting port between the combustion chamber and the vertical feeding trough, the connecting port can be blocked, thereby preventing the flame in the combustion furnace from igniting the garbage to be treated in the vertical feeding trough.

[0009] In the aforementioned container-type integrated garbage combustion treatment system, the combustion furnace assembly includes a combustion chamber connected to the garbage feeding assembly at one end, and the other end of the combustion chamber is connected to the ash trough; one or more layers of parallel secondary combustion chambers are arranged above the combustion chamber, and the tail end of the uppermost secondary combustion chamber is connected to the quench heat exchanger. The secondary combustion chamber is used to fully burn the exhaust gas (including pyrolysis gas, such as carbon monoxide and other combustible gases) that is not fully burned in the combustion furnace, and the multi-layer structure can lengthen the gas combustion path, thereby improving the problem of secondary combustion and reducing the production of carcinogenic harmful substances such as dioxins.

[0010] In the aforementioned container-type integrated garbage combustion treatment system, a grate is provided in the combustion chamber. The combustion chamber can be tilted, so a stepped reciprocating grate can be used. The final slag can be discharged to the ash slag trough below.

[0011] In the aforementioned container-type integrated garbage combustion treatment system, an induced draft fan for exhausting exhaust gas and a blower for supplying oxygen are provided on the upper part of the auxiliary gasification furnace.

[0012] In the aforementioned container-type integrated garbage combustion treatment system, the blower is connected to the combustion chamber and the secondary combustion chamber of the combustion furnace assembly, as well as the auxiliary gasification furnace.

[0013] In the aforementioned container-type integrated garbage combustion treatment system, the outer side of the combustion furnace assembly is coated with a layer of heat insulation material.

[0014] In the aforementioned container-type integrated garbage incineration treatment system, a plurality of baffles arranged in an up-and-down manner are provided in the cooling water pool to lengthen the water flow and accelerate cooling.

[0015] Compared with the prior art, the present invention uses a vertically stacked container structure to centrally accommodate various equipment for waste combustion treatment. It cleverly utilizes the combined upper and lower spaces of the container structure and the partitioned space of a single container structure to effectively arrange various components of different sizes and installation requirements. The overall structure is extremely compact, yet it does not sacrifice the convenience of installation and maintenance. Moreover, the container structure is extremely convenient for overall transportation. When in use, only the structure of the present invention needs to be transported to the combustion site and placed steadily, without the need for any civil engineering projects. After filling various coolant liquids, alkaline liquids, and absorption materials, it can be put into use, which is very conducive to large-scale popularization and application. When the waste incineration plant needs to be relocated, there is no need to disassemble it, and it can be transported as a whole.

[0016] In addition, the combustion furnace assembly and the feeding assembly of the present invention have a clever structure. They can not only drain water, dry, and preheat the waste during the feeding process, but also greatly improve the combustion efficiency of the waste, and there are relatively few toxic and harmful gases in the tail gas. Combined with the pyrolysis gas supply of the auxiliary gasification furnace, the combustion tail gas of waste with a lower calorific value can also be subjected to high-temperature secondary combustion in the secondary combustion chamber, thereby improving the adaptability of the present invention to various types of waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall external structure of the present invention;

[0018] Figure 2 is a schematic diagram of the front-end vertical cross-sectional structure of the present invention;

[0019] Figure 3 is a schematic diagram of the rear-end vertical cross-sectional structure of the present invention;;

[0020] Figure 4 is a schematic diagram of the horizontal cross-sectional structure of the present invention.

[0021] The reference signs in the drawings are: 1 - upper container body, 2 - lower container body, 3 - quench heat exchanger, 4 - bag filter, 5 - filtrate tank, 6 - cooling water tank, 7 - ash hopper, 8 - dust collection box, 9 - multi-stage tail gas treatment tank, 10 - auxiliary gasification furnace, 11 - alkaline liquid tank, 12 - activated carbon absorption tower, 13 - induced draft fan, 14 - blower, 101 - vertical feeding chute, 102 - pushing and blocking block, 103 - pushing power mechanism, 104 - filter plate, 105 - horizontal pushing chute, 201 - combustion chamber, 202 - secondary combustion chamber, 203 - grate, 601 - baffle plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The present invention will be further described below in conjunction with the drawings and embodiments, but it shall not be used as a basis for limiting the present invention.

[0023] Embodiment. A containerized integrated system for waste combustion treatment, asFigures 1 to 4 As shown in the figure: it includes an upper container body 1 and a lower container body 2 which are stacked and connected up and down. Inside the upper container body 1, there are successively arranged a garbage feeding assembly, a combustion furnace assembly, a quench heat exchanger 3 and a bag filter 4 from front to back; inside the lower container body 2, there are successively arranged a filtrate pool 5 below the garbage feeding assembly, a cooling water pool 6 and an ash slag tank 7 below the combustion furnace assembly, and a dust collection box 8 below the bag filter 4. The garbage feeding assembly, the combustion furnace assembly and the quench heat exchanger 3 are located on one side inside the upper container body 1. On the other side inside the upper container body 1, there are successively arranged a tail gas multi-stage treatment tank 9 and an auxiliary gasifier 10 from back to front. The lower end of the tail gas multi-stage treatment tank 9 extends into the lower container body 2, and there is an alkali liquid pool 11 below the auxiliary gasifier 10 inside the lower container body 2.

[0024] The garbage feeding assembly includes a vertical feeding chute 101 inside the upper container body 1. The upper end of the vertical feeding chute 101 extends outside the upper container body 1 and is provided with a feeding port; a transverse pushing chute 105 extending to the outside of the front end of the upper container body 1 is arranged on the side of the vertical feeding chute 101. A pushing plug 102 and a pushing power mechanism 103 are arranged inside the transverse pushing chute 105; a filter plate 104 is arranged at the bottom of the vertical feeding chute 101. The combustion furnace assembly includes a combustion chamber 201 with one end connected to the garbage feeding assembly, and the other end of the combustion chamber 201 is connected to the ash slag tank 7; one or more layers of parallel secondary combustion chambers 202 are arranged above the combustion chamber 201, and the tail end of the uppermost secondary combustion chamber 202 is connected to the quench heat exchanger 3. A grate 203 is arranged inside the combustion chamber 201. An induced draft fan 13 for discharging tail gas and a blower 14 for supplying oxygen are arranged on the upper part of the auxiliary gasifier 10. The blower 14 is connected to the combustion chamber 201 and the secondary combustion chamber 202 of the combustion furnace assembly, and the auxiliary gasifier 10. The outside of the combustion furnace assembly is coated with a heat insulation material layer. A plurality of baffle plates 601 arranged in a staggered manner up and down are arranged inside the cooling water pool 6.

[0025] Preferably, an activated carbon absorption tower 12 can be arranged between the quench heat exchanger 3 and the bag filter 4.

[0026] The usage method of the present invention:

[0027] First, the pusher plugging block 102 is pushed to block the communication port. Then, the garbage to be processed is loaded from the vertical feeding chute 101. The pusher plugging block 102 should be slightly smaller than the vertical feeding chute so that the garbage leachate can flow into the filtrate pool 5 along the gap from the filter plate 104. When the combustion chamber 201 is burning, the heat can be transferred to the pusher plugging block 102 and preheat the garbage accumulated on the upper part. When it is necessary to replenish the garbage in the combustion chamber 201, the pusher plugging block 102 retracts into the horizontal pusher chute, the garbage drops, and then pushing the pusher plugging block 102 forward can push the bottom layer of garbage into the combustion chamber 201;

[0028] Then, the garbage burns step by step along the grate 203 in the combustion chamber 201. The slag finally enters the ash chute 7, while the tail gas enters the secondary combustion chamber 202 for high-temperature secondary combustion. The tail gas after secondary combustion enters the quench heat exchanger for rapid cooling to condense most of the tar and water. The cooling water of the quench heat exchanger can be naturally cooled in the cooling water pool. When it is necessary to utilize the heat obtained by the quench heat exchanger, the quench heat exchanger can be connected to a power generation device or a hot water supply system.

[0029] The cooled tail gas enters the activated carbon absorption tower 12 of the absorption tower for adsorption, enters the bag filter 4 for fly ash recovery, and then enters the tail gas multi-stage treatment tank 9 for desulfurization and denitrification treatment, and finally discharges the tail gas meeting the environmental protection requirements.

[0030] When the calorific value of the garbage to be processed is relatively low (such as the organic matter content is relatively low), the temperature in the secondary combustion chamber cannot reach the requirement. The auxiliary vaporization furnace can be started to increase the temperature of the secondary combustion by mixing the pyrolysis gas provided by the auxiliary vaporization furnace (while increasing the sample injection amount) during the secondary combustion.

Claims

1. A containerized integrated waste combustion treatment system, characterized in that: It includes an upper container body (1) and a lower container body (2) connected in an up-and-down stacked manner. Inside the upper container body (1), a waste feeding component, a combustion furnace component, a quenching heat exchanger (3), and a bag filter (4) are successively arranged from front to back; inside the lower container body (2), a filtrate pool (5) below the waste feeding component, a cooling water pool (6) and an ash slag tank (7) below the combustion furnace component, and a dust collection box (8) located below the bag filter (4) are successively arranged from front to back; the waste feeding component, the combustion furnace component, and the quenching heat exchanger (3) are located on one side inside the upper container body (1), and on the other side inside the upper container body (1), a tail gas multi-stage treatment tank (9) and an auxiliary gasification furnace (10) are successively arranged from back to front. The lower end of the tail gas multi-stage treatment tank (9) extends into the lower container body (2), and an alkali liquid pool (11) is arranged inside the lower container body (2) below the auxiliary gasification furnace (10); the combustion furnace component includes a combustion chamber (201) with one end connected to the waste feeding component, and the other end of the combustion chamber (201) is connected to the ash slag tank (7); one or more layers of parallel secondary combustion chambers (202) are arranged above the combustion chamber (201), and the tail end of the uppermost secondary combustion chamber (202) is connected to the quenching heat exchanger (3); the waste feeding component includes a vertical feeding trough (101) inside the upper container body (1), and the upper end of the vertical feeding trough (101) extends outside the upper container body (1) and is provided with a feeding port; a transverse pushing trough (105) extending to the outside of the front end of the upper container body (1) is arranged on the side of the vertical feeding trough (101), and a pushing plug block (102) and a pushing power mechanism (103) are arranged inside the transverse pushing trough (105); a filter plate (104) is arranged at the bottom of the vertical feeding trough (101); a grate (203) is arranged inside the combustion chamber (201); an induced draft fan (13) for discharging tail gas and a blower (14) for supplying oxygen are arranged above the auxiliary gasification furnace (10); the blower (14) is connected to the combustion chamber (201) and the secondary combustion chamber (202) of the combustion furnace component, and the auxiliary gasification furnace (10).

2. The containerized integrated waste combustion treatment system according to claim 1, characterized in that: An activated carbon absorption tower (12) is arranged between the quenching heat exchanger (3) and the bag filter (4).

3. The containerized integrated waste combustion treatment system according to claim 1, characterized in that: The outside of the combustion furnace component is coated with a heat insulation material layer.

4. The containerized integrated waste combustion treatment system according to claim 1, characterized in that: A plurality of baffle plates (601) arranged in a staggered manner up and down are arranged inside the cooling water pool (6).

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