Coagulating bath volatile gas recovery device

Abstract

The utility model discloses a coagulating bath volatile gas recovery device and belongs to the technical field of gas recovery equipment. Comprising an outer cover shell and a reinforcing frame arranged on the outer ring of the top of the outer cover shell, and connecting pieces connected with the reinforcing frame are arranged at the four corners of the inner wall of the outer cover shell respectively. Diagonal angles of two sides of the bottom of the outer housing are respectively provided with a flow guide pipe which is communicated with the liquid collection channel. The umbrella-shaped drainage plate is arranged in the outer housing, the middle of the drainage plate is high, and the two sides of the drainage plate are low, so that mixed gas adsorbed at the bottom can be well and preliminarily blocked in the drainage plate, and cooling of the drainage plate can be accelerated in cooperation with the auxiliary condensation device arranged on the surface of the top of the drainage plate; therefore, the mixed gas can be quickly condensed when being accumulated.

Description

Technical Field

[0001] This utility model belongs to the technical field of gas recovery equipment, specifically relating to a condensation bath volatile gas recovery device. Background Technology

[0002] During the production of carbon fiber precursor, the coagulation bath stage releases large amounts of volatile organic compounds (VOCs) and acidic gases such as dimethyl sulfoxide (DMSO) and acrylonitrile (AN). Currently, the industry generally adopts an open-type gas collection hood combined with negative pressure extraction for treatment.

[0003] Traditional vertical gas collection hoods have turbulent gas flow fields, with measured escape rates as high as 25%-30% (data from the "Emission Standard for Pollutants from Carbon Fiber Industry"). At the same time, solvent vapors carried in the gas are prone to secondary volatilization after condensation on the inner wall of the equipment, and existing technologies cannot effectively collect them, resulting in a DMSO loss rate of over 8%. Utility Model Content

[0004] The present invention aims to solve the technical problems existing in the prior art and provide a device for recovering volatile gases from a condensation bath.

[0005] The above-mentioned technical problems of this utility model are mainly solved by the following technical solution: a volatile gas recovery device for a coagulation bath, comprising an outer shell and a reinforcing frame disposed on the top outer ring of the outer shell, wherein the four corners of the inner wall of the outer shell are respectively provided with connecting parts that connect to the reinforcing frame, characterized in that: a liquid collection channel is disposed around the bottom of the inner wall of the outer shell, and diagonally opposite sides of the bottom of the outer shell are respectively provided with guide pipes communicating with the liquid collection channel, a top plate is disposed between the top of the outer shell and the reinforcing frame, and gas outlet pipes are respectively inserted into the two sides of the top of the top plate, wherein the gas outlet pipes... The bottom extends through the top plate to below it. A drainage plate is laid inside the outer casing. A reinforcing frame is set in the middle of the drainage plate. The drainage plate is umbrella-shaped, with the top higher than the sides. Multiple vent holes are symmetrically opened on the surface of the drainage plate. Multiple drainage grooves are opened at the bottom of both sides of the drainage plate. An auxiliary condensation device is set on one side of the outer casing. The auxiliary condensation device extends into the outer casing and is laid on the surface of the drainage plate. A horizontal frame is set at the bottom of the outer casing. Scrapers are set at both ends of the horizontal frame. The scrapers on both sides are inserted into the corresponding liquid collection channels on both sides.

[0006] Preferably, the reinforced frame is provided with a plurality of first reinforcing ribs and a plurality of second reinforcing ribs arranged horizontally, with the plurality of first reinforcing ribs located on both sides and the plurality of second reinforcing ribs located between the plurality of first reinforcing ribs, and the two air outlet pipes are interlocked with the second reinforcing ribs.

[0007] Preferably, the outer ring of the vent is provided with a protective frame, which is located on top of the drainage plate.

[0008] Preferably, the auxiliary condensation device includes a mounting plate, a small pump body, a connecting pipe, a condensate tank, a mounting bracket, a condensate pipe, a first auxiliary pipe, and a second auxiliary pipe. The mounting plate and multiple mounting brackets are respectively disposed on one side of the outer casing. The small pump body is disposed on the mounting plate. The condensate tank is disposed between the multiple mounting brackets. The connecting pipe is disposed between the small pump body and the condensate tank.

[0009] Preferably, the condenser tube is located at the output end of the small pump body and extends inward through the outer casing to the top of the guide plate. Multiple first auxiliary tubes are arranged on both sides of the condenser tube, and multiple second auxiliary tubes are arranged on both sides of the first auxiliary tube, and are inclined downward at 10-15°.

[0010] The beneficial effects of this utility model are as follows: By setting a diversion plate inside the outer casing, the diversion plate is umbrella-shaped, higher in the middle and lower on both sides, which can effectively block the mixed gas adsorbed at the bottom within the diversion plate. At the same time, the auxiliary condensation device set on the top surface of the diversion plate can accelerate the cooling of the diversion plate, so that the mixed gas can be quickly condensed when it accumulates. Combined with the dripping from both sides into the liquid collection channel, it is convenient for rapid collection and treatment. At the same time, the multiple vent holes on the surface of the diversion plate can allow the internal gas to overflow upwards, preventing the mixed gas from accumulating too much and overflowing outwards. Then, the top plate at the top of the outer casing can block the gas a second time, and with the auxiliary condensation structure at the top of the diversion plate, secondary condensation is carried out, so that the liquid accumulated on the surface can be diverted to both sides through the top of the diversion plate and dripped into the liquid collection channel below with the drainage tank. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the top of this utility model;

[0012] Figure 2 This is a three-dimensional structural diagram of the bottom of this utility model;

[0013] Figure 3 This is a three-dimensional structural diagram of the present invention without the top plate installed;

[0014] Figure 4 This is a cross-sectional structural schematic diagram of this utility model.

[0015] In the diagram: 1. Outer casing; 11. Reinforced frame; 12. Top plate; 13. Vent pipe; 14. First reinforcing rib; 15. Second reinforcing rib; 16. Liquid collection channel; 17. Guide pipe; 2. Drain plate; 21. Vent hole; 22. Reinforcing frame; 23. Protective frame; 24. Drainage trough; 25. Connector; 31. Mounting plate; 32. Small pump body; 33. Connecting pipe; 34. Condensate tank; 35. Mounting frame; 36. Condensate pipe; 37. First auxiliary pipe; 38. Second auxiliary pipe; 4. Horizontal frame; 41. Scraper. Detailed Implementation

[0016] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0017] Example: A device for recovering volatile gases from a condensation bath, such as... Figures 1-4 As shown, the device includes an outer casing 1 and a reinforcing frame 11 on the top outer ring of the outer casing 1. Connectors 25, which connect to the reinforcing frame 11, are respectively provided at the four corners of the inner wall of the outer casing 1. A liquid collection channel 16 is provided around the bottom of the inner wall of the outer casing 1. Diagonal guide pipes 17, which communicate with the liquid collection channel 16, are respectively provided on opposite sides of the bottom of the outer casing 1. A top plate 12 is provided between the top of the outer casing 1 and the reinforcing frame 11. Air outlet pipes 13 are inserted into both sides of the top of the top plate 12. The bottom of the air outlet pipes 13 extends through the top plate 12 and below it. A drainage plate 2 is laid inside the outer casing 1, dividing the interior of the outer casing 1 into an air collection chamber and an air inlet chamber, respectively. The air outlet pipes 13 are connected to the air collection chamber. A reinforcing frame 22 is provided in the middle of the diversion plate 2. The diversion plate 2 is umbrella-shaped with a high top and low sides. Multiple vent holes 21 are symmetrically opened on the surface of the diversion plate 2. A protective frame 23 is provided around the outer ring of the vent holes 21. The protective frame 23 is located at the top of the diversion plate 2 and is used to prevent the condensate on the top of the diversion plate 2 from dripping directly down through the vent holes 21. Multiple drainage grooves 24 are opened at the bottom of both sides of the diversion plate 2. An auxiliary condensation device is provided on one side of the outer cover 1. The auxiliary condensation device extends into the interior of the outer cover 1 and is laid on the surface of the diversion plate 2. A horizontal frame 4 is provided at the bottom of the outer cover 1. Scrapers 41 are provided at both ends of the horizontal frame 4. The scrapers 41 on both sides are inserted into the corresponding liquid collection channels 16 on both sides.

[0018] Multiple first reinforcing ribs 14 and multiple second reinforcing ribs 15 are arranged horizontally inside the reinforced frame 11. The multiple first reinforcing ribs 14 are located on both sides, and the multiple second reinforcing ribs 15 are located between the multiple first reinforcing ribs 14. Two air outlet pipes 13 are interlocked with the second reinforcing ribs 15 to increase the strength of the entire structure.

[0019] The auxiliary condensation device includes a mounting plate 31, a small pump body 32, a connecting pipe 33, a condensate tank 34, a mounting bracket 35, a condenser pipe 36, a first auxiliary pipe 37, and a second auxiliary pipe 38. The mounting plate 31 and multiple mounting brackets 35 are respectively disposed on one side of the outer casing 1. The small pump body 32 is disposed on the mounting plate 31. The condensate tank 34 is disposed between multiple mounting brackets 35. The connecting pipe 33 is disposed between the small pump body 32 and the condensate tank 34. The condenser pipe 36 is disposed on the output end of the small pump body 32 and extends inward through the outer casing 1 to the top of the guide plate 2. Multiple first auxiliary pipes 37 are disposed on both sides of the condenser pipe 36. Multiple second auxiliary pipes 38 are disposed on both sides of the first auxiliary pipe 37 and are inclined downward at 10-15°.

[0020] The principle of this invention: The outer casing 1 plays a crucial supporting and connecting role in the entire device. A ring of liquid collection channels 16 is set around its bottom to collect the condensed liquid. The vent pipe 13 is connected to an external exhaust fan through a pipe, and the fan's suction force is used to achieve orderly gas discharge. The guide plate 2 is designed with a 13° inclination angle on both sides and has multiple vent holes 21 to optimize the gas flow path. In actual operation, when the gas escaping from the lower condensation bath rises, some of the gas that cannot be drawn away by the fan in time will condense on the inner side of the guide plate 2 and then flow down along the inner wall, directly into the liquid collection tank; while the other part of the gas will condense on the inner side between the outer casing 1 and the top plate 12 through the vent holes 21 on the guide plate 2 and fall to the top of the guide plate 2. It is worth noting that multiple vent holes 21 are evenly distributed at the bottom of the diversion plate 2, and a protective frame 23 is set on the outer ring of the top of the vent. The liquid condensed on the outside can be smoothly collected into the liquid collection channel 16 of the outer casing 1 through these square slots. Two guide pipes 17 are installed at opposite corners of the liquid collection channel 16. The condensed liquid is collected uniformly through the guide pipes 17 and finally enters the circulation system, realizing the effective recycling and reuse of resources, and further improving the environmental performance and economic benefits of the entire device. At the same time, scrapers 41 are set inside the liquid collection channel 16. The scrapers 41 are connected by the crossbar 4. They are used to scrape the liquid collection channel 16 when it is blocked, so that the dirt accumulated on the inner wall can be discharged through the guide pipes 17. The blockage of the guide pipes 17 can be cleared by simple squeezing or pipe-clearing structure.

[0021] Finally, it should be noted that the above embodiments are merely representative examples of this utility model. Obviously, this utility model is not limited to the above embodiments and many variations are possible. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model should be considered to fall within the protection scope of this utility model.

Claims

1. A coagulation bath volatile gas recovery device, comprising an outer shell (1) and a reinforcing frame (11) arranged at the top outer ring of the outer shell (1), and the inner wall of the outer shell (1) is provided with connecting pieces (25) connected with the reinforcing frame (11) at four corners respectively, characterized in that: A liquid collection channel (16) is provided around the bottom of the inner wall of the outer casing (1). Diagonal guide pipes (17) communicating with the liquid collection channel (16) are provided on opposite sides of the bottom of the outer casing (1). A top plate (12) is provided between the top of the outer casing (1) and the reinforcing frame (11). Air outlet pipes (13) are inserted into both sides of the top of the top plate (12). The bottom of the air outlet pipes (13) extends through the top plate (12) to below it. A drainage plate (2) is laid inside the outer casing (1). A reinforcing frame (2) is provided in the middle of the drainage plate (2). 2) The diversion plate (2) is arranged in an umbrella shape with a high top and low sides. Multiple ventilation holes (21) are symmetrically opened on the surface of the diversion plate (2). Multiple drainage grooves (24) are opened at the bottom of both sides of the diversion plate (2). An auxiliary condensation device is provided on one side of the outer shell (1). The auxiliary condensation device extends into the interior of the outer shell (1) and is laid on the surface of the diversion plate (2). A horizontal frame (4) is arranged at the bottom of the outer shell (1). Scrapers (41) are provided at both ends of the horizontal frame (4). The scrapers (41) on both sides are inserted into the corresponding liquid collection channels (16) on both sides.

2. A coagulation bath volatile gas recovery device according to claim 1, characterized in that: The reinforced frame (11) is provided with a plurality of first reinforcing ribs (14) and a plurality of second reinforcing ribs (15) arranged horizontally. The plurality of first reinforcing ribs (14) are located on both sides, and the plurality of second reinforcing ribs (15) are located between the plurality of first reinforcing ribs (14). The two air outlet pipes (13) are connected to the second reinforcing ribs (15).

3. A coagulation bath volatile gas recovery device according to claim 1, characterized in that: The outer ring of the vent (21) is provided with a protective frame (23), which is located on the top of the diversion plate (2).

4. A coagulation bath volatile gas recovery apparatus according to claim 1, characterized in that: The auxiliary condensation device includes a mounting plate (31), a small pump body (32), a connecting pipe (33), a condensate tank (34), a mounting bracket (35), a condensation pipe (36), a first auxiliary pipe (37), and a second auxiliary pipe (38). The mounting plate (31) and multiple mounting brackets (35) are respectively disposed on one side of the outer casing (1). The small pump body (32) is disposed on the mounting plate (31). The condensate tank (34) is disposed between multiple mounting brackets (35). The connecting pipe (33) is disposed between the small pump body (32) and the condensate tank (34).

5. A coagulation bath volatile gas recovery apparatus according to claim 4, wherein: The condenser tube (36) is located at the output end of the small pump body (32) and extends inward through the outer casing (1) to the top of the guide plate (2). The first auxiliary tube (37) is arranged in multiple ways on both sides of the condenser tube (36), and the second auxiliary tube (38) is arranged in multiple ways on both sides of the first auxiliary tube (37) and is inclined downward at 10-15°.

Images