A carbon capture device for solid waste combustion

Abstract

The utility model relates to carbon dioxide processing, specifically disclose a kind of carbon capture device for solid waste combustion, including absorption tower, a pair of respectively located in the pretreatment device of absorption tower both sides, while with a pair of pretreatment device connection's air inlet pipe, and while with a pair of pretreatment device connection's cooling device;Pretreatment device includes first filter box, first filter cotton is located in first filter box, to connect the first air pipe of first filter box and air inlet pipe, first valve is located on first air pipe, to connect the second air pipe of first filter box and absorption tower, drain pipe is located in the lower end of first filter box, filter is connected with drain pipe, pump body is located on drain pipe, to connect the liquid pipe of filter and cooling device, and with cooling device connection's cleaning pipe.The carbon capture device for solid waste combustion of the utility model can effectively filter and cool the gas before entering the absorption tower.

Description

Technical Field

[0001] This utility model relates to the technical field of carbon dioxide treatment, and more specifically, to a carbon capture device for solid waste combustion. Background Technology

[0002] The incineration of solid waste generates a large amount of carbon dioxide, which, if directly emitted, will exacerbate the greenhouse effect. Therefore, effective treatment is crucial. Absorption is a common carbon dioxide capture method, with the absorption tower as its core equipment. Its working principle is to introduce the gas produced by combustion into the tower, allowing the gas to come into full contact with the absorbent liquid, thereby enabling the absorbent liquid to absorb the carbon dioxide from the gas.

[0003] However, even after pre-cooling and filtration, the gas still presents several problems before entering the absorption tower. Firstly, the gas temperature remains high, significantly impacting the absorption efficiency of the absorbent liquid for carbon dioxide, as the absorption performance of the absorbent liquid is often closely related to temperature; higher temperatures may disrupt its optimal absorption conditions. Secondly, the gas still contains a certain amount of solid impurities. These impurities, once inside the absorption tower, not only contaminate the absorbent liquid, reducing its lifespan and efficiency, but may also accumulate within the tower, affecting its normal operation.

[0004] Therefore, it is particularly necessary to design a dedicated pre-processing device. Utility Model Content

[0005] The purpose of this invention is to provide a carbon capture device for solid waste combustion, which can effectively filter and cool the gas before it enters the absorption tower.

[0006] This utility model is achieved through the following technical solution: The carbon capture device for solid waste combustion of this utility model includes an absorption tower, a pair of pretreatment devices respectively disposed on both sides of the absorption tower, an air inlet pipe connected to the pair of pretreatment devices, and a cooling device connected to the pair of pretreatment devices; the pretreatment device includes a first filter box, a first filter cotton disposed in the first filter box, a first air guide pipe for connecting the first filter box and the air inlet pipe, a first valve disposed on the first air guide pipe, a second air guide pipe for connecting the first filter box and the absorption tower, a drain pipe disposed at the lower end of the first filter box, a filter connected to the drain pipe, a pump body disposed on the drain pipe, an upper liquid pipe for connecting the filter and the cooling device, and a cleaning pipe connected to the cooling device; the end of the cleaning pipe away from the cooling device passes through the side wall of the first filter box and is disposed above the first filter cotton.

[0007] Furthermore, the inner wall of the first filter box is provided with a vertically arranged partition. The upper end and both sides of the partition are connected to the inner wall of the first filter box, and a gap is provided between the lower end of the partition and the bottom wall of the first filter box. The partition divides the first filter box into a first chamber and a second chamber. The first air guide pipe is connected to the upper end of the first chamber, and the second air guide pipe is connected to the upper end of the second chamber. The first filter cotton is disposed in the second chamber.

[0008] Furthermore, the end of the cleaning pipe away from the cooling device is located in the second chamber; the outer wall of the portion of the cleaning pipe located in the second chamber is provided with multiple nozzles, which are distributed horizontally and directed toward the first filter cotton.

[0009] Furthermore, the filter includes a second filter box, a sealing plate disposed at the upper end of the first filter box, and a second filter cotton removably disposed in the second filter box.

[0010] Furthermore, it also includes a water storage tank, and each of the pair of second filter boxes is connected to the water storage tank via a liquid guide pipe; the water storage tank is connected to the cooling device via the liquid inlet pipe.

[0011] Furthermore, the cleaning pipe is equipped with a second valve, which is a flow-controlled valve.

[0012] Furthermore, the cooling device includes an annular cooling box, which is fitted onto the outer wall of the absorption tower; the pair of cleaning pipes and the liquid inlet pipe are both connected to the interior of the cooling box.

[0013] Furthermore, the cooling box is located on the upper side wall of the absorption tower.

[0014] Furthermore, the outer wall of the cooling box is provided with a plurality of heat dissipation fins, which are arranged in a ring on the outer wall of the cooling box and distributed in a vertical direction.

[0015] Furthermore, the water storage tank is connected to a replenishment pipe, and a third valve is provided on each pair of the liquid guide pipes.

[0016] The technical solution of this utility model has at least the following advantages and beneficial effects: The carbon capture device for solid waste combustion of this utility model pre-filters and pre-cools the high-temperature flue gas generated during solid waste combustion and then sends it into the inlet pipe. Then, it enters the first filter box through the first air guide pipe, where the fine particulate impurities are filtered out by the first filter cotton in the first filter box. Meanwhile, the cleaning pipe continuously and slowly discharges coolant, which continuously wets the first filter cotton, so that the gas is fully cooled after passing through the first filter cotton. Then, it enters the absorption tower through the second air guide pipe (where it is absorbed by the absorption liquid). The first valve controls the closure of the first gas guide pipe (only one valve can be closed at a time). When the first gas guide pipe is closed, the water flow rate of the first cleaning pipe of the first filter box connected to it can be increased. This increased water flow backwashes the first filter cotton. During backwashing, the waste liquid flows to the bottom of the first filter box and enters the pump body through the drain pipe. The pump body draws in the waste liquid and pumps it into the filter. The filter filters the waste liquid, and the filtered clear liquid flows into the cooling device through the upper liquid pipe. After cooling in the cooling device, the liquid finally flows back to the first filter box through the cleaning pipe, completing the cycle. This not only fully cools the gas entering the absorption tower, improving the gas absorption efficiency, but also effectively filters out particulate impurities, preventing contamination of the absorption liquid. Furthermore, the structure of the absorption tower itself does not require major adjustments; therefore, simple modifications can be made to the existing absorption tower. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of a carbon capture device for solid waste combustion provided in an embodiment of this utility model;

[0018] Figure 2 A two-view structural schematic diagram of a carbon capture device for solid waste combustion provided in an embodiment of this utility model;

[0019] Figure 3 A three-view structural schematic diagram of a carbon capture device for solid waste combustion provided in an embodiment of this utility model;

[0020] Figure 4 for Figure 3 Sectional view along the middle AA direction;

[0021] Figure 5 for Figure 3 Sectional view along the BB direction;

[0022] Figure 6 This is a schematic diagram of the pretreatment device provided in an embodiment of the present invention.

[0023] Icons: 10-Absorption tower, 11-Air inlet pipe, 20-Pretreatment device, 21-First filter box, 22-First filter cotton, 23-First air guide pipe, 24-First valve, 25-Second air guide pipe, 26-Drain pipe, 27-Filter, 28-Pump body, 29-Cleaning pipe, 210-Second valve, 211-Baffle, 212-First chamber, 213-Second chamber, 214-Nozzle, 215-Liquid guide pipe, 216-Storage tank, 30-Cooling device, 31-Cooling box, 32-Heat sink. Detailed Implementation

[0024] Example

[0025] The following description, in conjunction with specific embodiments, further illustrates the point, as shown in the appendix. Figure 1 - Appendix Figure 6As shown, the carbon capture device for solid waste combustion in this embodiment is characterized by: an absorption tower 10, a pair of pretreatment devices 20 respectively disposed on both sides of the absorption tower 10, an air inlet pipe connected to the pair of pretreatment devices 20, and a cooling device 30 connected to the pair of pretreatment devices 20; the pretreatment device 20 includes a first filter box 21, a first filter cotton 22 disposed in the first filter box 21, a first air guide pipe 23 for connecting the first filter box 21 and the air inlet pipe, a first valve 24 disposed on the first air guide pipe 23, a second air guide pipe 25 for connecting the first filter box 21 and the absorption tower 10, a drain pipe 26 disposed at the lower end of the first filter box 21, a filter 27 connected to the drain pipe 26, a pump body 28 disposed on the drain pipe 26, an upper liquid pipe for connecting the filter 27 and the cooling device 30, and a cleaning pipe 29 connected to the cooling device 30; one end of the cleaning pipe 29 away from the cooling device 30 passes through the side wall of the first filter box 21 and is disposed above the first filter cotton 22. During operation, the high-temperature flue gas generated during solid waste combustion is pre-filtered and pre-cooled before being sent into the inlet pipe. It then enters the first filter box 21 through the first air guide pipe 23, where the fine particulate impurities are filtered out by the first filter cotton 22. Meanwhile, the cleaning pipe 29 continuously and slowly discharges coolant, which continuously wets the first filter cotton 22, ensuring the gas is fully cooled as it passes through. The gas then enters the absorption tower 10 through the second air guide pipe 25 (where it is absorbed by the absorption liquid). The first air guide pipe 23 can be closed via the first valve 24 (only one valve can be closed at a time). (Close one valve). When the first gas guide pipe 23 is closed, the water flow rate of the first cleaning pipe 29 of the first filter box 21 connected to the first gas guide pipe 23 can be increased. The increased water flow rate backwashes the first filter cotton 22. During the backwashing process, the waste liquid flows to the bottom of the first filter box 21 and enters the pump body 28 through the drain pipe 26. The pump body 28 draws in the waste liquid and pumps it into the filter 27. The filter 27 filters the waste liquid, and the filtered clear liquid flows into the cooling device 30 through the upper liquid pipe. After cooling in the cooling device 30, the liquid finally flows back to the first filter box 21 through the cleaning pipe 29, completing the cycle. This not only fully cools the gas entering the absorption tower 10, improving the gas absorption efficiency, but also effectively filters out particulate impurities, preventing contamination of the absorption liquid. Furthermore, the structure of the absorption tower 10 itself does not require significant adjustments; therefore, a simple modification can be made to the existing absorption tower 10. It should be noted that the flow of the cleaning fluid in the drain pipe 26, the inlet pipe, and the cleaning pipe 29 all rely on the power of the pump body 28. Therefore, the filter 27 and the cooling device 30 are both closed structures, and the flow of liquid in the filter 27 and the cooling device 30 is pressurized flow. Furthermore, the absorption tower 10 can be either a traditional packed absorption tower 10 or a plate absorption tower 10.

[0026] In this embodiment, the inner wall of the first filter box 21 is provided with a vertically arranged partition 211. The upper end and both sides of the partition 211 are connected to the inner wall of the first filter box 21, and a gap is provided between the lower end of the partition 211 and the bottom wall of the first filter box 21. The partition 211 divides the first filter box 21 into a first chamber 212 and a second chamber 213. The first air guide pipe 23 is connected to the upper end of the first chamber 212, and the second air guide pipe 25 is connected to the upper end of the second chamber 213. The first filter cotton 22 is disposed in the second chamber 213. Specifically, by separating the first filter box 21 by the partition 211, an air duct can be better established, allowing air to fully pass through the first filter cotton 22, and the first filter cotton 22 can be replaced with multi-layer filter cloth. Since the first filter cotton 22 is backwashed periodically, the frequency of replacement of the first filter cotton 22 is low.

[0027] In this embodiment, the end of the cleaning pipe 29 furthest from the cooling device 30 is located in the second chamber 213. The outer wall of the portion of the cleaning pipe 29 located in the second chamber 213 is provided with multiple nozzles 214, which are distributed horizontally and directed towards the first filter cotton 22. Specifically, when the first filter cotton 22 is normally exposed to air, the cleaning pipe 29 only needs to spray a small flow of water to cool it. When cleaning the first filter cotton 22 is required, the first valve 24 can be closed first, and then the water flow rate of the cleaning pipe 29 can be increased. The increased water flow rate backwashes the first filter cotton 22, and at this time, the suction rate of the pump body 28 on the drain pipe 26 can be increased. Since the first air guide pipe 23 is closed, the suction efficiency of the liquid above the first filter cotton 22 is increased, allowing the cleaning liquid to pass through the first filter cotton 22 more quickly, achieving a highly efficient cleaning effect.

[0028] The filter 27 in this embodiment includes a second filter box, a sealing plate located at the upper end of the first filter box 21, and a second filter cotton detachably disposed in the second filter box. It also includes a water storage tank, with both second filter boxes connected to the water storage tank via liquid guide pipes 215; the water storage tank is connected to the cooling device 30 via an inlet pipe. The water storage tank is connected to a replenishment pipe, and each of the two liquid guide pipes 215 is equipped with a third valve. Specifically, waste liquid containing a large number of impurity particles enters the second filter box through the drain pipe 26, is filtered by the second filter cotton, and then enters the water storage tank through the liquid guide pipe 215. After temporarily staying in the water storage tank, it enters the cooling device 30 through the inlet pipe for cooling. The second filter cotton does not have a flushing structure, therefore the sealing plate needs to be opened periodically to remove the first filter cotton 22 for cleaning or replacement. This operation only requires closing the pump body 28 and the third valve. Since losses are inevitable during the circulation of the cleaning fluid, it needs to be replenished via the replenishment pipe.

[0029] In this embodiment, a second valve 210 is provided on the cleaning pipe 29. The second valve 210 is a flow-controlled valve. Specifically, the water flow rate discharged from the cleaning pipe 29 can be controlled by the second valve 210.

[0030] The cooling device 30 in this embodiment includes an annular cooling box 31, which is fitted onto the outer wall of the absorption tower 10. A pair of cleaning pipes 29 and a liquid inlet pipe are both connected to the interior of the cooling box 31. The cooling box 31 is located on the upper side wall of the absorption tower 10. Multiple heat sinks 32 are provided on the outer wall of the cooling box 31, arranged in a ring along the vertical direction. Specifically, by placing the cooling box 31 at a high position in the absorption tower 10, the advantage of higher natural wind (only applicable to outdoor installations) can be utilized to cool the cooling box 31 and the cleaning liquid within it. The annular cooling box 31 and the heat sinks 32 can improve its cooling efficiency.

[0031] In summary, the carbon capture device for solid waste combustion in this embodiment pre-filters and pre-cools the high-temperature flue gas generated during solid waste combustion before sending it into the inlet pipe. Then, it enters the first filter box 21 through the first air guide pipe 23, where the fine particulate impurities are filtered out by the first filter cotton 22. Meanwhile, the cleaning pipe 29 continuously and slowly discharges coolant, continuously wetting the first filter cotton 22, ensuring the gas is fully cooled after passing through it. The gas then enters the absorption tower 10 through the second air guide pipe 25 (where it is absorbed by the absorbent liquid). The first air guide pipe 25 can be controlled by the first valve 24. 3. Closure (only one valve can be closed at a time): When the first gas guide pipe 23 is closed, the water flow rate of the first cleaning pipe 29 of the first filter box 21 connected to the first gas guide pipe 23 can be increased. The increased water flow rate backwashes the first filter cotton 22. During the backwashing process, the waste liquid flows to the bottom of the first filter box 21 and enters the pump body 28 through the drain pipe 26. The pump body 28 draws in the waste liquid and pumps it into the filter 27. The filter 27 filters the waste liquid, and the filtered clear liquid flows into the cooling device 30 through the upper liquid pipe. After cooling in the cooling device 30, the liquid finally flows back to the first filter box 21 through the cleaning pipe 29, completing the cycle. This not only fully cools the gas entering the absorption tower 10, improving the gas absorption efficiency, but also effectively filters out particulate impurities, preventing contamination of the absorption liquid. Furthermore, the structure of the absorption tower 10 itself does not require significant adjustments; therefore, simple modifications can be made to the existing absorption tower 10.

[0032] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A carbon capture device for solid waste combustion, characterized in that: It includes an absorption tower (10), a pair of pretreatment devices (20) respectively disposed on both sides of the absorption tower (10), an air inlet pipe connected to the pair of pretreatment devices (20), and a cooling device (30) connected to the pair of pretreatment devices (20). The pretreatment device (20) includes a first filter box (21), a first filter cotton (22) disposed in the first filter box (21), a first air guide pipe (23) for connecting the first filter box (21) and the air inlet pipe, a first valve (24) disposed on the first air guide pipe (23), a second air guide pipe (25) for connecting the first filter box (21) and the absorption tower (10), a drain pipe (26) disposed at the lower end of the first filter box (21), a filter (27) connected to the drain pipe (26), a pump body (28) disposed on the drain pipe (26), an upper liquid pipe for connecting the filter (27) and the cooling device (30), and a cleaning pipe (29) connected to the cooling device (30). The end of the cleaning pipe (29) away from the cooling device (30) passes through the side wall of the first filter box (21) and is positioned above the first filter cotton (22).

2. The carbon capture device for solid waste combustion according to claim 1, characterized in that: The inner wall of the first filter box (21) is provided with a vertically arranged partition (211). The upper end and both sides of the partition (211) are connected to the inner wall of the first filter box (21). The lower end of the partition (211) is provided with a gap between it and the bottom wall of the first filter box (21). The partition (211) divides the first filter box (21) into a first chamber (212) and a second chamber (213). The first air guide pipe (23) is connected to the upper end of the first chamber (212), and the second air guide pipe (25) is connected to the upper end of the second chamber (213). The first filter cotton (22) is disposed in the second chamber (213).

3. The carbon capture device for solid waste combustion according to claim 2, characterized in that: The end of the cleaning pipe (29) away from the cooling device (30) is located in the second chamber (213); The cleaning tube (29) is provided with a plurality of nozzles (214) on the outer wall of a portion of the second chamber (213). The plurality of nozzles (214) are distributed in a horizontal direction and are positioned toward the first filter cotton (22).

4. The carbon capture device for solid waste combustion according to claim 1, characterized in that: The filter (27) includes a second filter box, a sealing plate disposed at the upper end of the first filter box (21), and a second filter cotton detachably disposed in the second filter box.

5. The carbon capture device for solid waste combustion according to claim 4, characterized in that: It also includes a water storage tank, and a pair of second filter boxes are connected to the water storage tank via liquid guide pipes (215); The water storage tank is connected to the cooling device (30) via the liquid inlet pipe.

6. The carbon capture device for solid waste combustion according to claim 1, characterized in that: The cleaning pipe (29) is equipped with a second valve (210), which is a flow control valve.

7. The carbon capture device for solid waste combustion according to claim 1, characterized in that: The cooling device (30) includes an annular cooling box (31), which is fitted onto the outer wall of the absorption tower (10); Both the cleaning pipe (29) and the liquid inlet pipe are connected to the interior of the cooling tank (31).

8. The carbon capture device for solid waste combustion according to claim 7, characterized in that: The cooling box (31) is located on the upper side wall of the absorption tower (10).

9. The carbon capture device for solid waste combustion according to claim 8, characterized in that: The outer wall of the cooling box (31) is provided with a plurality of heat sinks (32), which are arranged in a ring on the outer wall of the cooling box (31) and are distributed in a vertical direction.

10. The carbon capture device for solid waste combustion according to claim 5, characterized in that: The water storage tank is connected to a replenishment pipe, and a third valve is provided on each of the pair of liquid guide pipes (215).

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