Volatile organic compound recycling device

Abstract

The utility model relates to the technical field of waste gas treatment, in particular to a volatile organic compound recovery treatment device. The utility model provides a volatile organic compound recovery processing device which comprises a bottom plate, a gas inlet box, a connecting pipe, waste gas guide pipes, a charging box and an exhaust assembly, the gas inlet box is installed on the top of the bottom plate, one side of the gas inlet box is connected and communicated with the connecting pipe, and the side, close to the bottom plate, of the connecting pipe is connected and communicated with the waste gas guide pipes. Butterfly valves are mounted on the waste gas guide pipes, a desorption box is mounted at the top of the bottom plate, and vertical cavities corresponding to the waste gas guide pipes in number are arranged in the desorption box. The adsorbent absorbs VOCs in the organic waste gas, when the organic matters absorbed in the adsorbent reach a saturation point, the vertical chamber and the horizontal chamber of the desorption box are closed by rotating the rotating shaft and the butterfly valve, the other vertical chambers of the desorption box still carry out waste gas recovery treatment operation, and then the organic matters absorbed in the adsorbent are released through high-temperature steam; therefore, the purpose of non-stop working is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to a device for recovering and treating volatile organic compounds. Background Technique

[0002] Volatile organic compounds refer to organic compounds with high vapor pressure at normal temperature. They are easily volatilized from liquid or solid state into gas, which may have negative impacts on the environment and human health. The main purposes of recovering and treating VOCs are to reduce air pollution, protect the environment and recycle relevant resources. The adsorption method for recovering volatile organic compounds is one of the widely used VOCs recovery technologies in industry, especially in industries such as organic chemical industry, petrochemical industry, pharmaceuticals, packaging and printing, coatings, etc.

[0003] Based on the surface adsorption capacity of porous solid adsorbents (such as activated carbon, silica gel, molecular sieve, etc.), the adsorption method can effectively capture and accommodate VOCs molecules. When the waste gas containing VOCs flows through the adsorbent bed layer, the VOCs molecules will be adsorbed in the microporous structure of the adsorbent, while the clean air is discharged. As the adsorbent gradually reaches saturation, it must be regenerated to restore its adsorption capacity. For some adsorption systems, since the waste gas treatment process may need to be suspended during the regeneration of the adsorbent, this not only affects the continuity of waste gas treatment, but also reduces the treatment efficiency.

[0004] Therefore, it is necessary to provide a device for recovering and treating volatile organic compounds that can work without shutting down. Content of the Utility Model

[0005] In order to overcome the disadvantages that some adsorption systems may need to suspend the waste gas treatment process during the regeneration of the adsorbent, which not only affects the continuity of waste gas treatment, but also reduces the treatment efficiency, the utility model provides a device for recovering and treating volatile organic compounds that can work without shutting down.

[0006] The technical solution is as follows: A volatile organic compound recovery and treatment device includes a bottom plate, an air inlet box, a connecting pipe, an exhaust gas conduit, a loading box, and an exhaust component. The air inlet box is installed on the top of the bottom plate. One side of the air inlet box is connected and communicated with a connecting pipe. One side of the connecting pipe close to the bottom plate is connected and communicated with a plurality of exhaust gas conduits. A butterfly valve is installed on the exhaust gas conduit. The desorption box is installed on the top of the bottom plate. Vertical chambers corresponding to the number of exhaust gas conduits are arranged in the desorption box. A horizontal chamber communicating with the plurality of vertical chambers is arranged at the lower part inside the desorption box. The exhaust component is connected and communicated with one side of the desorption box. It also includes a sealing component, a steam delivery pump, a steam inlet pipe, a shunt pipe, a first ball valve, a steam outlet pipe, a confluence pipe, and a second ball valve. A sealing component for switching between the adsorption mode and the regeneration mode and controlling the communication and sealing between the vertical chamber and the horizontal chamber is arranged in the desorption box. The steam delivery pump is installed on the top of the bottom plate. The output end of the steam delivery pump is connected and communicated with the steam inlet pipe. The steam inlet pipe is connected and communicated with shunt pipes corresponding to the number of exhaust gas conduits. A first ball valve for controlling the inflow of steam is installed on the shunt pipe. A plurality of steam outlet pipes are connected and communicated with the top of the desorption box. One end of the plurality of steam outlet pipes far away from the desorption box is connected and communicated with the confluence pipe. A second ball valve for controlling the outflow of steam is installed on the outlet pipe.

[0007] Further, the exhaust component includes a base and an exhaust chimney. The base is installed on one side of the desorption box, and the exhaust chimney connected and communicated with the desorption box is installed on the base.

[0008] Further, the sealing component includes a sliding plate, a baffle plate, a rotating shaft, a gear, and a rack. Rotating shafts corresponding to the number of vertical chambers are rotatably arranged on the desorption box. Baffle plates corresponding to the number of vertical chambers are fixedly connected to the desorption box. Sliding grooves are opened on both sides of the inner wall of the desorption box. A plurality of sliding plates are slidably arranged between the sliding grooves on both sides of the inner wall of the desorption box. Gears are fixedly connected to the rotating shafts. Racks are fixedly connected to the bottoms of the sliding plates. The racks are engaged with the adjacent gears. The sliding plates and the baffle plates cooperate to communicate and seal the vertical chamber and the horizontal chamber inside the desorption box.

[0009] Further, it also includes a cooling box, a heat conducting plate, a waste liquid collection box, and a drain pipe. The cooling box is also installed on the bottom plate. A plurality of heat conducting plates are fixedly connected inside the cooling box. The cooling box is connected and communicated with the end of the confluence pipe. The waste liquid collection box is installed on the bottom plate. The waste liquid collection box is connected and communicated with the cooling box through the drain pipe, and the drain pipe penetrates through a plurality of heat conducting plates.

[0010] Further, it also includes a filter plate, and a plurality of filter plates are installed inside the air inlet box.

[0011] Further, it also includes an exhaust fan, and two exhaust fans are installed on the cooling box.

[0012] Further, it also includes an air extraction fan, and the air extraction fan is installed inside the exhaust chimney.

[0013] The beneficial effects are as follows: 1. The adsorbent absorbs VOCs in the organic waste gas. When the organic matter absorbed in the adsorbent reaches the saturation point, by rotating the rotating shaft and the butterfly valve, the vertical chamber and the horizontal chamber of the desorption box are closed, and the remaining vertical chambers of the desorption box still carry out the waste gas recovery treatment operation. Then, the organic matter absorbed in the adsorbent is released by high-temperature steam, so as to achieve the purpose of working without shutdown.

[0014] 2. An exhaust fan is installed in the exhaust chimney to promote gas circulation and accelerate the discharge of the purified organic waste gas.

[0015] 3. When the organic matter absorbed in the adsorbent is released, the two exhaust fans will run alternately in positive and reverse rotation to promote air flow and cool the heat conduction plate in the cooling box, so as to cool the heat conduction plate in the cooling box. The steam and organic matter in the cooling box are liquefied, which is convenient for the recovery of the organic matter. Description of the Drawings

[0016] Figure 1 It is a three-dimensional structure schematic diagram of the present utility model.

[0017] Figure 2 It is a three-dimensional sectional structure schematic diagram of the desorption box, waste gas conduit and butterfly valve of the present utility model.

[0018] Figure 3 It is a three-dimensional structure schematic diagram of the steam delivery pump, steam inlet pipe and shunt pipe of the present utility model.

[0019] Figure 4 It is a three-dimensional sectional structure schematic diagram of the desorption box, sliding plate and rotating shaft of the utility model.

[0020] Figure 5 It is a three-dimensional sectional structure schematic diagram of the air inlet box, waste gas conduit and loading box of the utility model.

[0021] Figure 6 It is a three-dimensional sectional structure schematic diagram of the cooling box, exhaust fan and heat conduction plate of the utility model.

[0022] Figure 7 It is a three-dimensional sectional structure schematic diagram of the base, exhaust chimney and air extraction fan of the present utility model.

[0023] Names and serial numbers of components in the figure: 1 - bottom plate, 2 - intake box, 3 - connecting pipe, 4 - desorption box, 5 - exhaust gas duct, 6 - butterfly valve, 7 - charging box, 8 - sliding plate, 801 - baffle plate, 9 - rotating shaft, 10 - gear, 11 - rack, 12 - steam delivery pump, 13 - steam inlet pipe, 14 - shunt pipe, 15 - first ball valve, 1501 - steam outlet pipe, 16 - confluence pipe, 17 - second ball valve, 18 - base, 19 - exhaust chimney, 20 - cooling box, 21 - exhaust fan, 22 - heat conduction plate, 23 - waste liquid collection box, 24 - filter plate, 25 - air extraction fan, 26 - drain pipe. Detailed implementation mode

[0024] The present utility model will be specifically described below in conjunction with the accompanying drawings.

[0025] Embodiment: A volatile organic compound recovery and treatment device, as shown in Figures 1 - 5 the figure, includes a bottom plate 1, an intake box 2, a connecting pipe 3, an exhaust gas duct 5, a charging box 7 and an exhaust assembly. The intake box 2 is installed at the top of the bottom plate 1. Four filter plates 24 are installed in the intake box 2 by means of bolt connection to perform multiple filtrations on the organic waste gas and filter out large particle waste. The right side of the top of the intake box 2 is connected and communicated with a connecting pipe 3. Three exhaust gas ducts 5 are connected and communicated at the bottom of the connecting pipe 3. A butterfly valve 6 is installed on the exhaust gas duct 5. The desorption box 4 is installed at the top of the bottom plate 1. Three vertical chambers corresponding to the exhaust gas duct 5 are arranged in the desorption box 4. A horizontal chamber communicating with the three vertical chambers is arranged at the lower part in the desorption box 4. The exhaust assembly is connected and communicated with one side of the desorption box 4. A closing assembly for switching between an adsorption mode and a regeneration mode and controlling the communication and closing of the vertical chamber and the horizontal chamber is arranged in the desorption box 4. The steam delivery pump 12 is installed at the top of the bottom plate 1. The output end of the steam delivery pump 12 is connected and communicated with a steam inlet pipe 13. Shunt pipes 14 corresponding to the number of the exhaust gas ducts 5 are connected and communicated on the steam inlet pipe 13. A first ball valve 15 for controlling the inflow of steam is installed on the shunt pipe 14. Multiple steam outlet pipes 1501 are connected and communicated at the top of the desorption box 4. One end of the multiple steam outlet pipes 1501 far away from the desorption box 4 is connected and communicated with a confluence pipe 16. A second ball valve 17 for controlling the outflow of steam is installed on the outlet pipe.

[0026] As shown in Figure 7 the figure, the exhaust assembly includes a base 18 and an exhaust chimney 19. The base 18 is installed on the right side of the desorption box 4 by means of bolt connection. The exhaust chimney 19 connected and communicated with the desorption box 4 is installed on the base 18 by means of bolt connection. An air extraction fan 25 is installed in the exhaust chimney 19 by means of bolt connection. The air extraction fan 25 is used to promote gas flow and accelerate the discharge of the purified organic waste gas.

[0027] As shown in Figure 4As shown, the closing assembly includes a sliding plate 8, a baffle 801, a rotating shaft 9, a gear 10, and a rack 11. The desorption box 4 is rotatably provided with rotating shafts 9 corresponding to the number of vertical chambers. Three baffles 801 are fixedly connected to the desorption box 4. Both sides of the inner wall of the desorption box 4 are provided with chutes. Three sliding plates 8 are slidably arranged between the chutes on both sides of the inner wall of the desorption box 4. A gear 10 is fixedly connected to the rotating shaft 9. The bottom of the sliding plate 8 is fixedly connected with a rack 11 by welding. The rack 11 meshes with the adjacent gear 10. The sliding plate 8 cooperates with the baffle 801 to connect and close the vertical chamber and the horizontal chamber in the desorption box 4.

[0028] Referring to Figure 6 As shown, it further includes a cooling box 20, a heat conducting plate 22, a waste liquid collection box 23, and a drain pipe 26. The cooling box 20 is further installed on the bottom plate 1. A plurality of heat conducting plates 22 are fixedly connected in the cooling box 20. The cooling box 20 is connected and communicated with the end of the confluence pipe 16. The waste liquid collection box 23 is installed on the bottom plate 1. The waste liquid collection box 23 is connected and communicated with the cooling box 20 through a drain pipe 26, and the drain pipe 26 penetrates through a plurality of heat conducting plates 22. Two exhaust fans 21 are installed on the cooling box by bolt connection. The two exhaust fans 21 will run alternately in positive and negative rotations to promote air flow.

[0029] When volatile gases need to be recovered and treated, slide the charging box 7 forward, add adsorbent into the charging box 7, then push the charging box 7 back, connect the intake box 2 to the organic waste gas outlet. Initially, the butterfly valve 6 is in the open state to allow gas flow. Then rotate the rotating shaft 9, the rotating shaft 9 drives the gear 10 to rotate, the gear 10 meshes with the rack 11, so that the rack 11 drives the sliding plate 8 to slide and opens the channel between the vertical chamber and the horizontal chamber of the desorption box 4. The waste gas enters the vertical chamber of the desorption box 4 through the connecting pipe 3 and the waste gas conduit 5, and moves downward under the action of air pressure. When passing through the charging box 7, the adsorbent in the charging box 7 absorbs the VOCs in the organic waste gas. The purified gas continues to pass through the horizontal chamber of the desorption box 4 and is finally discharged by the exhaust chimney. When the organic matter absorbed by the adsorbent reaches the saturation point, rotate the rotating shaft 9 in the reverse direction at this time. The gear 10 meshes with the rack 11, so that the rack 11 drives the sliding plate 8 to slide in the reverse direction to close the vertical chamber and the horizontal chamber of the desorption box 4. Then close the corresponding butterfly valve 6 to prevent the organic waste gas from entering the vertical chamber of the corresponding desorption box 4, while the vertical chambers of the remaining desorption boxes 4 still carry out waste gas recovery treatment operations. Then connect the steam delivery pump 12 to the steam delivery pipeline, rotate the first ball valve 15 on the corresponding shunt pipe 14, and rotate the second ball valve 17 on the corresponding steam outlet pipe 1501, so that steam enters the desorption box 4 through the shunt pipe 14. Under the high temperature action of the steam, the organic matter absorbed by the adsorbent is released, and is discharged through the steam outlet pipe 1501 and enters the cooling box 20. Then start the exhaust fan 21, and control the two exhaust fans 21 to operate alternately in forward and reverse to promote air flow and cool the heat conducting plate 22 in the cooling box 20, thereby cooling the heat conducting plate 22 in the cooling box 20. The steam and organic matter in the cooling box 20 are liquefied, and then enter the waste liquid collection box 23 through the drain pipe 26 for centralized collection and treatment. After the adsorbent completes the regeneration operation, close the corresponding first ball valve 15 and second ball valve 17, and then open the butterfly valve 6 to make the charging box 7 continue to carry out organic waste gas recovery operations, so as to achieve the purpose of working without shutdown.

[0030] The above embodiments are only the preferred embodiments of the present invention, and are not used to limit the scope of implementation of the present invention. Therefore, all equivalent changes made according to the content described in the claims of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A volatile organic compound recovery and treatment device, comprising a base plate (1), an air intake box (2), a connecting pipe (3), an exhaust gas conduit (5), a charging box (7) and an exhaust assembly, wherein an air intake box (2) is installed on the top of the base plate (1), one side of the air intake box (2) is connected and communicated with a connecting pipe (3), a side of the connecting pipe (3) close to the base plate (1) is connected and communicated with a plurality of exhaust gas conduits (5), a butterfly valve (6) is installed on the exhaust gas conduit (5), a desorption box (4) is installed on the top of the base plate (1), a number of vertical chambers corresponding to the number of exhaust gas conduits (5) are arranged in the desorption box (4), a horizontal chamber connected with the plurality of vertical chambers is arranged in the lower part of the desorption box (4), the exhaust assembly is connected and communicated with one side of the desorption box (4), and the characteristics are as follows: The desorption box (4) further comprises a sealing component, a steam delivery pump (12), a steam inlet pipe (13), a shunt pipe (14), a first ball valve (15), a steam outlet pipe (1501), a confluence pipe (16) and a second ball valve (17). The desorption box (4) is provided with a sealing component for switching between an adsorption mode and a regeneration mode and controlling the connection and sealing of the vertical chamber and the horizontal chamber. The top of the bottom plate (1) is provided with a steam delivery pump (12). The output end of the steam delivery pump (12) is connected and communicated with a steam An air inlet pipe (13), the steam air inlet pipe (13) is connected to and communicated with a number of shunt pipes (14) corresponding to the number of the exhaust gas ducts (5), a first ball valve (15) for controlling the inflow of steam is installed on the shunt pipe (14), a plurality of steam outlet pipes (1501) are connected to and communicated with the top of the desorption box (4), one end of the plurality of steam outlet pipes (1501) away from the desorption box (4) is connected to and communicated with a converging pipe (16), and a second ball valve (17) for controlling the outflow of steam is installed on the outlet pipe.

2. A volatile organic compound recovery and treatment device as claimed in claim 1, characterized in that: The exhaust assembly comprises a base (18) and an exhaust chimney (19); the base (18) is installed on one side of the desorption box (4); and the exhaust chimney (19) connected to and in communication with the desorption box (4) is installed on the base (18).

3. The volatile organic compound recovery and treatment device according to claim 1, characterized in that: The sealing component comprises a sliding plate (8), a baffle (801), a rotating shaft (9), a gear (10) and a rack (11); a rotating shaft (9) corresponding to the number of vertical chambers is rotatably arranged on the desorption box (4); a baffle (801) corresponding to the number of vertical chambers is fixedly connected to the desorption box (4); sliding grooves are provided on both sides of the inner wall of the desorption box (4); a plurality of sliding plates (8) are slidingly arranged between the sliding grooves on both sides of the inner wall of the desorption box (4); a gear (10) is fixedly connected to the rotating shaft (9); a rack (11) is fixedly connected to the bottom of the sliding plate (8); the rack (11) is meshed with the adjacent gear (10); the sliding plate (8) and the baffle (801) cooperate to connect and seal the vertical chamber and the horizontal chamber in the desorption box (4).

4. The volatile organic compound recovery and treatment device according to claim 1, characterized in that: It also includes a cooling box (20), a heat conducting plate (22), a waste liquid collection box (23) and a drainage pipe (26); the cooling box (20) is also installed on the bottom plate (1); a plurality of heat conducting plates (22) are fixedly connected in the cooling box (20); the cooling box (20) is connected and communicated with the end of the manifold (16); the waste liquid collection box (23) is installed on the bottom plate (1); the waste liquid collection box (23) and the cooling box (20) are connected and communicated with each other through the drainage pipe (26); and the drainage pipe (26) runs through the plurality of heat conducting plates (22).

5. The volatile organic compound recovery and treatment device according to claim 1, characterized in that: It also includes a filter plate (24), and a plurality of filter plates (24) are installed in the air intake box (2).

6. A volatile organic compound recovery and treatment device as claimed in claim 4, characterized in that: It also includes an exhaust fan (21), and two exhaust fans (21) are installed on the cooling box (20).

7. The volatile organic compound recovery and treatment device according to claim 2, characterized in that: It also includes an exhaust fan (25), which is installed in the exhaust chimney (19).

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