A granular tail gas absorption system

Abstract

This utility model proposes a particulate exhaust gas absorption system, including an absorption tank, a spray tank, and a storage tank. The absorption tank includes a shell with four absorption chambers inside. Adjacent chambers are connected by openings, which are staggered. Each absorption chamber contains an absorbent solvent, and the opening is located above the solvent surface. The absorption tank input is located in one absorption chamber at one end of the shell, and the absorption tank output is located in the other absorption chamber. The top of the spray tank has an exhaust port and a spray nozzle, which are connected to the storage tank via a pump. The bottom of the spray tank is connected to the storage tank, which contains spray liquid. The absorption tank in this application ensures sufficient contact area and contact time between the particulate exhaust gas and the absorbent solvent, improving the absorption effect of the solvent. Furthermore, the connection between the spray tank and the storage tank allows for the recycling of the spray liquid, saving costs.

Description

Technical Field

[0001] This utility model relates to the field of particulate exhaust gas treatment technology, and specifically to a particulate exhaust gas absorption system. Background Technology

[0002] Phenolic raw materials have a wide range of applications, playing an important role in the dye industry, pharmaceutical chemistry, and other fields. However, some phenolic raw materials (such as 2-naphthol) require high-temperature reactions during production and will sublimate at their specified reaction temperatures. If not collected, some phenolic raw materials will escape directly with byproducts, forming exhaust gas containing solid particles, similar to flue gas. This exhaust gas containing particles will recrystallize and clog pipelines if it cools down, and it is also polluting, requiring recycling and treatment. Currently, particulate exhaust gas is mostly treated by using water or other liquids to capture particulate matter, such as spray tower spraying or solvent absorption. However, the treatment effect is still not ideal, with certain shortcomings: 1. Particulate matter is easily incompletely absorbed, resulting in the exhaust gas still containing polluting particles; 2. The operating cost is high, requiring the consumption of a large amount of spray liquid. Utility Model Content

[0003] To improve the treatment effect of particulate exhaust gas and save on spraying liquid, this application proposes a particulate exhaust gas absorption system to solve the problems in the background technology and achieve the goals of zero pollution, zero emissions, and cost savings. The technical solution is as follows:

[0004] A particulate exhaust gas absorption system includes an absorption tank, a spray tank, and a storage tank. The absorption tank includes a shell, and the shell has four absorption chambers. Adjacent chambers are connected by a port, and the adjacent ports are staggered. Each absorption chamber contains an absorption solvent, and the port is located above the surface of the absorption solvent.

[0005] The input end of the absorption tank is located in the absorption chamber at one end of the shell, and the output end of the absorption tank is located in the absorption chamber at the other end of the shell. The output end of the absorption tank is connected to the spray tank. The top of the spray tank is provided with an exhaust port and a spray nozzle. The spray nozzle is connected to the storage tank through a pumping device. The bottom of the spray tank is connected to the storage tank. The storage tank contains spray liquid.

[0006] Preferably, the absorbent solvent is located in the lower half of the shell, and the four absorption chambers are separated by a first partition, a second partition, and a third partition. The top, front, and rear ends of the first partition are fixedly connected to the inner walls of the top, front, and rear sides of the shell, respectively. A gap is maintained between the bottom end of the first partition and the surface of the absorbent solvent. The gap between the bottom ends of the first partition and the surface of the absorbent solvent is a first opening. The bottom, front, and rear ends of the second partition are fixedly connected to the inner walls of the bottom, front, and rear sides of the shell, respectively. The top end of the second partition extends above the surface of the absorbent solvent and maintains a gap with the inner wall of the top side of the shell. The gap between the top end of the second partition and the inner wall of the top side of the shell is a second opening. The top, front, and rear ends of the third partition are fixedly connected to the inner walls of the top, front, and rear sides of the shell, respectively. A gap is maintained between the bottom end of the third partition and the surface of the absorbent solvent. The gap between the bottom ends of the third partition and the surface of the absorbent solvent is a third opening.

[0007] Preferably, the second partition has a liquid inlet on the plate near the bottom, and the liquid inlet is located in the absorbent solvent.

[0008] Preferably, the absorption cell input end is located at the top of the shell, and the absorption cell output end is located at the top of the shell or on one side of the shell near the top.

[0009] Preferably, the absorbent solvent is located in the lower half of the housing. The four absorbent chambers are separated by a first partition, a second partition, and a third partition. The top and front ends of the first partition are fixedly connected to the top and front inner walls of the housing, respectively. A gap is maintained between the rear end of the first partition and the rear inner wall of the housing. The gap between the rear end of the first partition and the rear inner wall of the housing forms a first opening. The bottom end of the first partition extends into the absorbent solvent. The top and rear ends of the second partition are fixedly connected to the top and rear inner walls of the housing, respectively. A gap is maintained between the front end of the second partition and the front inner wall of the housing. The gap between the front end of the second partition and the front inner wall of the housing forms a second opening. The bottom end of the second partition extends into the absorbent solvent. The top and front ends of the third partition are fixedly connected to the top and front inner walls of the housing, respectively. A gap is maintained between the rear end of the third partition and the rear inner wall of the housing. The gap between the rear end of the third partition and the rear inner wall of the housing forms a third opening. The bottom end of the third partition extends into the absorbent solvent.

[0010] Preferably, the absorption cell input end is located on the front side of the top of the shell, and the absorption cell output end is located on the front side of the top of the shell, or on the front side of the shell near the top, or on the side of the shell away from the first partition near the top.

[0011] Preferably, the input end of the absorption tank is connected to a heating sleeve for receiving, conveying, and heating the particulate exhaust gas.

[0012] Preferably, the absorption tank and the spray tank are connected by a blower, the input end of the blower is connected to the absorption tank through a pipe, and the output end of the blower is connected to the spray tank through a pipe.

[0013] Preferably, the pumping device includes a first water supply pipe, a second water supply pipe, and a water pump. The output end of the water pump is connected to one end of the first water supply pipe, and the other end of the first water supply pipe is connected to a spray nozzle. The input end of the water pump is connected to one end of the second water supply pipe, and the other end of the second water supply pipe extends into the storage tank and is close to the bottom of the storage tank. A filter screen is provided at the end of the second water supply pipe located in the storage tank.

[0014] Preferably, the bottom of the spray tank is connected to the storage tank via a drain pipe, and the location where the drain pipe connects to the storage tank is below the end of the second water supply pipe that has a filter screen.

[0015] The beneficial effects of this utility model are as follows:

[0016] This application comprehensively utilizes solvent absorption and spraying to treat particulate exhaust gas, improving the treatment effect. Furthermore, the absorption tank in this application has four absorption chambers, ensuring sufficient contact area and time between the particulate exhaust gas and the absorption solvent, further enhancing the absorption effect of the solvent. Simultaneously, the spray tank and storage tank are connected, enabling the recycling of the spray liquid and saving costs. Additionally, since the particulate exhaust gas generated from the reaction of phenolic raw materials is prone to crystallization upon cooling, this application uses a heating sleeve to enter the absorption tank, where the heating sleeve heats the particulate exhaust gas, preventing crystallization and blockage that could affect subsequent treatment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a top view of the internal structure of the absorption cell in Embodiment 2 of this utility model.

[0019] Numbered in the diagram: 1. Reaction equipment; 2. Heating sleeve; 3. Absorption tank; 31. Shell; 32. First partition; 33. Second partition; 34. Third partition; 35. First port; 36. Second port; 37. Third port; 4. Fan; 5. Spray tank; 51. Spray nozzle; 6. Exhaust port; 7. First water supply pipe; 8. Second water supply pipe; 9. Water pump; 10. Filter screen; 11. Storage tank; 12. Drain pipe; 13. Absorbent solvent; 14. Spray liquid; 15. Liquid inlet. Detailed Implementation

[0020] To make this utility model clearer and more understandable, the technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the given embodiments are only one of the implementation methods and do not represent all embodiments.

[0021] In this article, terms such as "inner," "outer," "upper," "lower," "front," "back," "left," and "right" are established based on the positional relationships shown in the attached figures. Depending on the attached figures, the corresponding positional relationships may also change. Therefore, they should not be interpreted as an absolute limitation on the scope of protection.

[0022] Example 1:

[0023] Combined with appendix Figure 1 A particulate exhaust gas absorption system includes an absorption tank 3, a spray tank 5, and a storage tank 11. The absorption tank 3 includes a shell 31, and the shell 31 is provided with four absorption chambers. Two adjacent chambers are connected by a port, and two adjacent ports are staggered. Each absorption chamber is provided with an absorption solvent 13, and the port is located above the liquid surface of the absorption solvent 13.

[0024] The input end of the absorption tank 3 is located in the absorption chamber at one end of the shell 31. The input end of the absorption tank 3 is connected to a heating sleeve 2 for receiving, conveying and heating particulate exhaust gas. Specifically, one end of the heating sleeve 2 is connected to the input end of the absorption tank 3, and the other end of the heating sleeve 2 receives the particulate exhaust gas. More specifically, the end of the heating sleeve 2 away from the absorption tank 3 can be connected to the reaction equipment 1, such as a chemical reactor. The raw materials react in the reaction equipment 1, and the particulate exhaust gas generated by the reaction enters the heating sleeve 2 from the exhaust end of the reaction equipment 1. The heating sleeve 2 can heat the particulate exhaust gas to prevent the particulate exhaust gas from crystallizing, which would affect the entry of the particulate exhaust gas into the absorption tank 3 and thus affect the subsequent exhaust gas treatment.

[0025] The output end of the absorption tank 3 is located in the absorption chamber at the other end of the shell 31. The output end of the absorption tank 3 is connected to the spray tank 5 through the blower 4. The input end of the blower 4 is connected to the absorption tank 3 through a pipe. The output end of the blower 4 is connected to the spray tank 5 through a pipe. The top of the spray tank 5 is provided with an exhaust port 6 and a spray nozzle 51. The spray nozzle 51 is connected to the storage tank 11 through a pumping device. The bottom of the spray tank 5 is connected to the storage tank 11. The storage tank 11 contains a spray liquid 14, which can be water, methanol, or ethanol.

[0026] Specifically, the heating sleeve 2 includes a tube body and an electric heating tape. The electric heating tape is wound around the outer wall of the tube body to heat the tube body, thereby heating the particulate exhaust gas passing through the tube body.

[0027] Specifically, the absorbent solvent 13 is located in the lower half of the housing 31. The four absorption chambers are separated by a first partition 32, a second partition 33, and a third partition 34. From left to right, the four absorption chambers are named the first absorption chamber, the second absorption chamber, the third absorption chamber, and the fourth absorption chamber. The top, front, and rear ends of the first partition 32 are fixedly connected to the top, front, and rear inner walls of the housing 31, respectively. A gap is maintained between the bottom of the first partition 32 and the surface of the absorbent solvent 13. The gap between the bottom ends of the first partition 32 and the surface of the absorbent solvent 13 forms the first opening 35. The bottom, front, and rear ends of the second partition 33 are fixedly connected to the bottom, front, and rear inner walls of the housing 31, respectively. The top end of the second partition 33 extends above the surface of the absorbent solvent 13 and maintains a distance from the top inner wall of the housing 31. The distance between the top end of the second partition 33 and the top inner wall of the housing 31 is the second opening 36. The top, front, and rear ends of the third partition 34 are fixedly connected to the top, front, and rear inner walls of the housing 31, respectively. The bottom end of the third partition 34 maintains a distance from the surface of the absorbent solvent 13. The distance between the bottom end of the third partition 34 and the surface of the absorbent solvent 13 is the third opening 37. During processing, the particulate exhaust gas sequentially enters the first absorption chamber, the first port 35, the second absorption chamber, the second port 36, the third absorption chamber, the third port 37, and the fourth absorption chamber. The particulate exhaust gas can come into contact with the absorption solvent 13 in all four absorption chambers as well as at the first port 35 and the third port 37. Furthermore, the three baffles can provide some obstruction to the particulate exhaust gas, preventing it from being directly sucked away by the fan 4.

[0028] Specifically, the second partition 33 has a liquid inlet 15 near its bottom position, which is located in the absorbent solvent 13. An inlet is provided on one side of the housing 31 near its bottom position to allow the absorbent solvent 13 to be introduced into / outlet from the housing 31. The liquid inlet 15 on the second partition 33 connects to the absorption chambers on both sides of the second partition 33. The absorbent solvent 13 can flow sequentially from the inlet, below the first partition 32, through the liquid inlet 15, and below the third partition 34, facilitating the introduction or removal of the absorbent solvent 13.

[0029] Specifically, the input end of the absorption tank 3 is located at the top of the housing 31, and the output end of the absorption tank 3 is located at the top of the housing 31 or on one side of the housing 31 near the top. This arrangement keeps the input and output ends of the absorption tank 3 as far away from the inlet as possible, preventing particulate exhaust gas from directly entering the next absorption chamber from the first inlet 35 when it enters the absorption tank 3. It also prevents the particulate exhaust gas from being directly sucked away by the fan 4 when it exits the third absorption chamber, thus avoiding insufficient absorption of the particulate exhaust gas in the first and fourth absorption chambers.

[0030] Specifically, the pumping equipment includes a first water supply pipe 7, a second water supply pipe 8, and a water pump 9. The output end of the water pump 9 is connected to one end of the first water supply pipe 7, and the other end of the first water supply pipe 7 is connected to the spray nozzle 51. The input end of the water pump 9 is connected to one end of the second water supply pipe 8, and the other end of the second water supply pipe 8 extends into the liquid storage tank 11 and is close to the bottom of the liquid storage tank 11. A filter screen 10 is provided at the end of the second water supply pipe 8 located in the liquid storage tank 11. After the particulate exhaust gas enters the spray tank 5, the water pump 9 draws the spray liquid 14, which is then sprayed out through the spray nozzle 51 to spray the particulate exhaust gas in the spray tank 5, absorbing the residual exhaust gas. After spray treatment, the exhaust gas is discharged from the exhaust port 6. The exhaust gas discharged from the exhaust port 6 is mainly composed of water vapor and is non-polluting. The spray liquid 14 returns to the storage tank 11 from the bottom of the spray tank 5, realizing the recycling of the spray liquid 14 and reducing costs. The filter screen 10 can filter the spray liquid 14 to ensure that the spray liquid 14 is free of impurities or pollutants during spraying, further improving the recycling effect of the spray liquid 14.

[0031] Specifically, the bottom of the spray tank 5 is connected to the storage tank 11 through the drain pipe 12. The location where the drain pipe 12 connects to the storage tank 11 is below the end of the second water supply pipe 8 where the filter screen 10 is located. When the water pump 9 cannot draw the spray liquid 14, the remaining spray liquid 14 in the storage tank 11 can still water seal the drain pipe 12, preventing particulate exhaust gas from directly entering the storage tank 11 from the spray tank 5, ensuring that the particulate exhaust gas is completely treated and that the treated exhaust gas can be discharged, and preventing the exhaust gas from accumulating in the storage tank 11.

[0032] Example 2:

[0033] Combined with appendix Figure 2This utility model provides a particulate exhaust gas absorption system in Embodiment 2. The absorption system in this embodiment has the same basic structural properties as the absorption system in Embodiment 1. The difference is that the absorption solvent 13 in this embodiment is located in the lower half of the shell 31. The four absorption chambers are separated by a first partition 32, a second partition 33, and a third partition 34. The top and front ends of the first partition 32 are fixedly connected to the top and front inner walls of the shell 31, respectively. A gap is maintained between the rear end of the first partition 32 and the rear inner wall of the shell 31. The gap between the rear end of the first partition 32 and the rear inner wall of the shell 31 is the first opening 35. The bottom end of the first partition 32 extends to the absorption solvent. In solvent 13, the top and rear ends of the second partition 33 are fixedly connected to the top and rear inner walls of the shell 31, respectively. A gap is maintained between the front end of the second partition 33 and the front inner wall of the shell 31. The gap between the front end of the second partition 33 and the front inner wall of the shell 31 is the second opening 36. The bottom end of the second partition 33 extends into the absorbent solvent 13. The top and front ends of the third partition 34 are fixedly connected to the top and front inner walls of the shell 31, respectively. A gap is maintained between the rear end of the third partition 34 and the rear inner wall of the shell 31. The gap between the rear end of the third partition 34 and the rear inner wall of the shell 31 is the third opening 37. The bottom end of the third partition 34 extends into the absorbent solvent 13.

[0034] Specifically, the input end of the absorption cell 3 is located on the front side of the top of the housing 31, and the output end of the absorption cell 3 is located on the front side of the top of the housing 31, or on the front side of the housing 31 near the top, or on the side of the housing 31 away from the first partition 32 near the top.

[0035] Although embodiments of the present invention have been shown and described, those skilled in the art will be able to make various changes, modifications, substitutions and alterations to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A particulate exhaust gas absorption system, characterized in that: It includes an absorption tank (3), a spray tank (5) and a storage tank (11). The absorption tank (3) includes a shell (31). The shell (31) is provided with four absorption chambers. Two adjacent chambers are connected by a port. Two adjacent ports are staggered. Each absorption chamber is provided with an absorption solvent (13). The port is located above the liquid surface of the absorption solvent (13). The input end of the absorption tank (3) is located in the absorption chamber at one end of the shell (31), and the output end of the absorption tank (3) is located in the absorption chamber at the other end of the shell (31). The output end of the absorption tank (3) is connected to the spray tank (5). The top of the spray tank (5) is provided with an exhaust port (6) and a spray nozzle (51). The spray nozzle (51) is connected to the storage tank (11) through a pumping device. The bottom of the spray tank (5) is connected to the storage tank (11). The storage tank (11) is provided with spray liquid (14).

2. The particulate exhaust gas absorption system according to claim 1, characterized in that: The absorbent solvent (13) is located in the lower half of the shell (31). The four absorption chambers are separated by a first partition (32), a second partition (33), and a third partition (34). The top, front, and rear ends of the first partition (32) are fixedly connected to the top, front, and rear inner walls of the shell (31), respectively. A gap is maintained between the bottom of the first partition (32) and the surface of the absorbent solvent (13). The gap between the bottom of the first partition (32) and the surface of the absorbent solvent (13) is the first opening (35). The bottom, front, and rear ends of the second partition (33) are respectively connected to the bottom of the shell (31). The second partition (33) is fixedly connected to the inner walls of the side, front and rear sides. The top of the second partition (33) extends above the liquid surface of the absorbent solvent (13) and maintains a distance from the inner wall of the top side of the shell (31). The distance between the top of the second partition (33) and the inner wall of the top side of the shell (31) is the second opening (36). The top, front and rear of the third partition (34) are fixedly connected to the inner walls of the top, front and rear sides of the shell (31) respectively. The bottom of the third partition (34) maintains a distance from the liquid surface of the absorbent solvent (13). The distance between the bottom of the third partition (34) and the liquid surface of the absorbent solvent (13) is the third opening (37).

3. The particulate exhaust gas absorption system according to claim 2, characterized in that: The second partition (33) has a liquid inlet (15) on the plate near the bottom, and the liquid inlet (15) is located in the absorbent solvent (13).

4. The particulate exhaust gas absorption system according to claim 2, characterized in that: The input end of the absorption cell (3) is located at the top of the shell (31), and the output end of the absorption cell (3) is located at the top of the shell (31) or on one side of the shell (31) near the top.

5. The particulate exhaust gas absorption system according to claim 1, characterized in that: The absorbent solvent (13) is located in the lower half of the housing (31). The four absorbent chambers are separated by a first partition (32), a second partition (33), and a third partition (34). The top and front ends of the first partition (32) are fixedly connected to the top and front inner walls of the housing (31), respectively. The rear end of the first partition (32) is spaced from the rear inner wall of the housing (31). The distance between the rear end of the first partition (32) and the rear inner wall of the housing (31) is the first opening (35). The bottom end of the first partition (32) extends into the absorbent solvent (13). The top and rear ends of the second partition (33) are connected to the top and rear inner walls of the housing (31), respectively. The second partition (33) is fixedly connected to the wall. The front end of the second partition (33) is spaced from the front inner wall of the shell (31). The distance between the front end of the second partition (33) and the front inner wall of the shell (31) is the second opening (36). The bottom end of the second partition (33) extends into the absorbent solvent (13). The top and front ends of the third partition (34) are fixedly connected to the top and front inner walls of the shell (31) respectively. The rear end of the third partition (34) is spaced from the rear inner wall of the shell (31). The distance between the rear end of the third partition (34) and the rear inner wall of the shell (31) is the third opening (37). The bottom end of the third partition (34) extends into the absorbent solvent (13).

6. The particulate exhaust gas absorption system according to claim 5, characterized in that: The input end of the absorption cell (3) is located on the front side of the top of the shell (31), and the output end of the absorption cell (3) is located on the front side of the top of the shell (31), or on the front side of the shell (31) near the top, or on the side of the shell (31) away from the first partition (32) near the top.

7. The particulate exhaust gas absorption system according to claim 1, characterized in that: The absorption tank (3) has a heating sleeve (2) connected to its input end for receiving, conveying and heating particulate exhaust gas.

8. The particulate exhaust gas absorption system according to claim 1, characterized in that: The absorption tank (3) and the spray tank (5) are connected by a blower (4). The input end of the blower (4) is connected to the absorption tank (3) through a pipe, and the output end of the blower (4) is connected to the spray tank (5) through a pipe.

9. The particulate exhaust gas absorption system according to claim 1, characterized in that: The pumping equipment includes a first water supply pipe (7), a second water supply pipe (8), and a water pump (9). The output end of the water pump (9) is connected to one end of the first water supply pipe (7), and the other end of the first water supply pipe (7) is connected to the spray nozzle (51). The input end of the water pump (9) is connected to one end of the second water supply pipe (8), and the other end of the second water supply pipe (8) extends into the storage tank (11) and is close to the bottom of the storage tank (11). A filter screen (10) is provided at one end of the second water supply pipe (8) located in the storage tank (11).

10. A particulate exhaust gas absorption system according to claim 9, characterized in that: The bottom of the spray tank (5) is connected to the storage tank (11) through the drain pipe (12). The location where the drain pipe (12) connects to the storage tank (11) is below the end of the second water supply pipe (8) with the filter screen (10).

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