An organic solvent tail gas recovery system using hydrophobic silica gel

Abstract

The present invention relates to the technical field of filtering systems, and in particular to an organic solvent tail gas recovery system using hydrophobic silica gel, comprising a tank body, a spiral plate fixedly installed on the inner surface of the tank body, an inner rotating plate fixedly connected to the inner side of the spiral plate, an outer rotating plate fixedly connected to the outer side of the spiral plate, a top rotating plate fixedly connected to the upper side of the outer rotating plate, a spiral net fixedly connected to the surfaces of the spiral plate and the outer rotating plate, plug plates slidably inserted on the two side surfaces of the tank body, the two plug plates are respectively located on the two sides of the spiral plate, and a retaining net is fixedly embedded on the outer surface of the plug plates. The present invention promotes oil separation and filtration by means of centrifugal action, and effectively improves the filtration effect; retains the direct filtration method similar to the prior art, but brings about the improvement that most of the gas spiral filtration process is carried out at the spiral net, thereby greatly reducing the filtration burden at the filter layer mechanism; the internal hydrophobic silica gel filler is easy to replace, which is conducive to maintenance.

Description

Technical Field

[0001] The invention relates to the technical field of filtration systems, and in particular to an organic solvent tail gas recovery system using hydrophobic silica gel. Background Art

[0002] Hydrophobic silica particles have shown significant advantages and application potential in filtering the oil component in organic solvent tail gas. Through special surface modification treatment, hydrophobic silica particles have excellent hydrophobic properties on their surface, which can effectively repel water and preferentially adsorb oil. In the field of oil and gas recovery, hydrophobic silica particles are used as efficient adsorbents, which can adsorb and recover volatile oil and gas, reducing oil loss and environmental pollution.

[0003] In the existing filtration system, by setting up multiple filtration layers for filtration, the filtration effect still has room for improvement. In addition, as the oil and gas filtration continues, the hydrophobic silica gel particles will gradually adsorb the oil in the oil and gas. When the adsorption amount reaches a certain level, the silica gel particles will reach adsorption saturation state. At this time, its adsorption capacity will be significantly reduced, and new silica gel particles need to be replaced to ensure the filtration effect. However, the silica gel particle filler in the prior art is inconvenient to replace. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the background technology and to propose an organic solvent tail gas recovery system using hydrophobic silica gel.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: an organic solvent tail gas recovery system using hydrophobic silica gel, comprising a tank body, a spiral plate fixedly installed on the inner surface of the tank body, an inner rotating plate fixedly connected to the inner side of the spiral plate, an outer rotating plate fixedly connected to the outer side of the spiral plate, a top rotating plate fixedly connected to the upper side of the outer rotating plate, a spiral net fixedly connected to the surfaces of the spiral plate and the outer rotating plate, plug plates slidably installed on the two side surfaces of the tank body, the two plug plates are respectively located on both sides of the spiral plate, a baffle net is fixedly embedded on the outer surface of the plug plates, an air inlet pipe is fixedly embedded on the front surface of the tank body, the air inlet pipe is located in front of the lower side of the spiral plate, a rotating shaft is rotatably installed on the inner side of the tank body through a driving mechanism, a plurality of filtering layer mechanisms are sleeved on the outer surface of the rotating shaft, a drain pipe is fixedly connected to the lower surface of the tank body, and an exhaust part is provided at the upper end of the tank body.

[0006] Preferably, a sealing plate extends from the front surface of the plug plate, and the sealing plate is slidably embedded in the outer surface of the tank body. A socket is penetrated through the front surface of the plug plate and one side close to the sealing plate, and an insert block is slidably inserted into the inner side of the socket through an elastic mechanism.

[0007] Preferably, the elastic mechanism includes a fixed plate fixedly connected to the outer surface of the tank body and close to the rear of the plug block, a plurality of guide rods are slidably penetrated through the outer surface of the fixed plate, the front end of the guide rod is fixedly connected to the rear surface of the plug block, a compression spring is sleeved on the outer surface of the guide rod, the compression spring is located between the plug block and the fixed plate, and the rear ends of the plurality of guide rods are commonly fixedly connected to a pulling handle.

[0008] Preferably, the driving mechanism comprises a motor fixedly mounted on the lower surface of the tank body via a mounting seat, and an output shaft of the motor is fixedly connected to the lower end of the rotating shaft.

[0009] Preferably, the filter layer mechanism includes a first sleeve slidably sleeved on the outer surface of the rotating shaft, a second sleeve is threadedly sleeved on the upper end of the outer surface of the first sleeve, a cylindrical net is fixedly connected to the outer surface of the first sleeve, a cover net is fixedly connected to the outer surface of the second sleeve, the cover net covers the upper end of the cylindrical net, and a support plate is fixedly sleeved on the outer surface of the rotating shaft, and the upper surface of the support plate contacts the lower end of the first sleeve located at the bottom.

[0010] Preferably, a locking nut is threadedly sleeved on the upper end of the outer surface of the rotating shaft, and the lower end of the locking nut contacts the upper end of the second sleeve located at the top.

[0011] Preferably, the exhaust portion comprises a top cover fixedly mounted on the upper end of the tank body, the edge of the top cover is fixedly mounted to the edge of the tank body by bolts, and an exhaust pipe is fixedly embedded on the upper surface of the top cover.

[0012] Preferably, at least three supporting legs are fixedly mounted on the outer surface of the tank body, and the supporting legs extend downward.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention promotes the separation and filtration of oil by means of centrifugal action, and effectively improves the filtration effect;

[0015] 2. The present invention retains the direct filtration method similar to the prior art, but brings an improvement in that most of the gas spiral filtration process is carried out at the spiral mesh, thereby greatly reducing the filtration burden at the filter layer mechanism;

[0016] 3. The internal hydrophobic silica gel filler of the present invention is easy to replace and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of an organic solvent tail gas recovery system using hydrophobic silica gel according to the present invention;

[0018] Figure 2 A cross-sectional view of an organic solvent tail gas recovery system using hydrophobic silica gel according to the present invention;

[0019] Figure 3 The present invention is an organic solvent tail gas recovery system using hydrophobic silica gel Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 This is a schematic diagram of a spiral plate of an organic solvent tail gas recovery system using hydrophobic silica gel according to the present invention;

[0021] Figure 5 It is a schematic diagram of a filter layer mechanism of an organic solvent tail gas recovery system using hydrophobic silica gel according to the present invention;

[0022] Figure 6 The present invention is an organic solvent tail gas recovery system using hydrophobic silica gel Figure 5 Enlarged view of point B in the middle;

[0023] Figure 7 This is a schematic diagram of a disassembled cylindrical net and a cover net of an organic solvent tail gas recovery system using hydrophobic silica gel according to the present invention;

[0024] Figure 8 The present invention is a schematic diagram of a plug-in board of an organic solvent tail gas recovery system using hydrophobic silica gel.

[0025] 1. Tank body; 2. Rotating shaft; 3. Support plate; 4. Cylindrical net; 5. First sleeve; 6. Cover net; 7. Second sleeve; 8. Locking nut; 9. Motor; 10. Mounting seat; 11. Spiral plate; 12. Inner rotating plate; 13. Outer rotating plate; 14. Top rotating plate; 15. Spiral net; 16. Insert plate; 17. Block net; 18. Sealing plate; 19. Socket; 20. Insert block; 21. Fixed plate; 22. Guide rod; 23. Compression spring; 24. Pull handle; 25. Top cover; 26. Exhaust pipe; 27. Bolt; 28. Inlet pipe; 29. ​​Support foot; 30. Drain pipe. DETAILED DESCRIPTION

[0026] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0027] like Figure 1-Figure 8The organic solvent tail gas recovery system using hydrophobic silica gel shown in the figure comprises a tank body 1, a spiral plate 11 is fixedly installed on the inner surface of the tank body 1, an inner rotating plate 12 is fixedly connected to the inner side of the spiral plate 11, an outer rotating plate 13 is fixedly connected to the outer side of the spiral plate 11, a top rotating plate 14 is fixedly connected to the upper side of the outer rotating plate 13, a spiral net 15 is fixedly connected to the surfaces of the spiral plate 11 and the outer rotating plate 13, and plug plates 16 are slidably inserted on the two side surfaces of the tank body 1, and the two plug plates 16 are respectively located on the two sides of the spiral plate 11, and a baffle net 17 is fixedly embedded on the outer surface of the plug plates 16, an air inlet pipe 28 is fixedly embedded on the front surface of the tank body 1, and the air inlet pipe 28 is located in front of the lower side of the spiral plate 11, a rotating shaft 2 is rotatably installed on the inner side of the tank body 1 through a driving mechanism, and a plurality of filtering layer mechanisms are sleeved on the outer surface of the rotating shaft 2, a drain pipe 30 is fixedly connected to the lower surface of the tank body 1, and an exhaust part is provided at the upper end of the tank body 1.

[0028] like Figure 2 , Figure 3 , Figure 8 As shown, a sealing plate 18 extends from the front surface of the plug plate 16, and the sealing plate 18 is slidably embedded in the outer surface of the tank body 1. A socket 19 is formed through the front surface of the plug plate 16 and one side close to the sealing plate 18. An insert block 20 is slidably inserted into the inner side of the socket 19 through an elastic mechanism. When the insert block 20 is pulled out of the socket 19, the plug plate 16 can be removed, which is more convenient.

[0029] The elastic mechanism includes a fixing plate 21 fixedly connected to the outer surface of the tank body 1 and close to the rear of the plug block 20. A plurality of guide rods 22 are slidably penetrated through the outer surface of the fixing plate 21. The front end of the guide rod 22 is fixedly connected to the rear surface of the plug block 20. A compression spring 23 is sleeved on the outer surface of the guide rod 22. The compression spring 23 is located between the plug block 20 and the fixing plate 21. A pulling handle 24 is fixedly connected to the rear ends of the plurality of guide rods 22. The pulling handle 24 facilitates the user to pull the guide rod 22.

[0030] like Figure 2 , Figure 5 As shown, the driving mechanism includes a motor 9 fixedly mounted on the lower surface of the tank body 1 through a mounting seat 10, and the output shaft of the motor 9 is fixedly connected to the lower end of the rotating shaft 2. The mounting seat 10 is used to ensure the stable installation of the motor 9.

[0031] like Figure 5 , Figure 6 , Figure 7As shown, the filter layer mechanism includes a first sleeve 5 slidably sleeved on the outer surface of the rotating shaft 2, a second sleeve 7 is threadedly sleeved on the upper end of the outer surface of the first sleeve 5, a cylindrical net 4 is fixedly connected to the outer surface of the first sleeve 5, a cover net 6 is fixedly connected to the outer surface of the second sleeve 7, the cover net 6 covers the upper end of the cylindrical net 4, and a support plate 3 is fixedly sleeved on the outer surface of the rotating shaft 2, and the upper surface of the support plate 3 contacts the lower end of the first sleeve 5 located at the bottom. The second sleeve 7 can be removed from the upper end of the first sleeve 5 by rotating, which is convenient for disassembly and assembly, and the support plate 3 plays a supporting role. It should be noted that: in order to make the expression of the drawings clearer, Figure 2 , Figure 5 , Figure 6 In the figure, the filter screen on the surface of the cover net 6 and the cylindrical net 4 is not drawn.

[0032] A locking nut 8 is threadedly sleeved at the upper end of the outer surface of the rotating shaft 2, and the lower end of the locking nut 8 contacts the upper end of the second sleeve 7 located at the top. After the locking nut 8 is tightened, it can press the cover net 6 and the cylindrical net 4 to ensure that the cylindrical net 4 can be driven to rotate synchronously when the rotating shaft 2 rotates, which plays a centrifugal role on the inner filler.

[0033] like Figure 1 , Figure 2 As shown, the exhaust part includes a top cover 25 fixedly mounted on the upper end of the tank body 1, the edge of the top cover 25 is fixedly mounted to the edge of the tank body 1 by bolts 27, and an exhaust pipe 26 is fixedly embedded on the upper surface of the top cover 25. The bolts 27 include bolts and nuts, which can facilitate the removal and installation of the top cover 25. The filtered gas is discharged from the exhaust pipe 26.

[0034] like Figure 1 As shown, at least three supporting feet 29 are fixedly mounted on the outer surface of the tank body 1, and the supporting feet 29 extend downward to raise the tank body 1 so as to facilitate the connection of the drainage pipe 30 below to the external pipeline.

[0035] When oil and gas enter through the air inlet pipe 28, most of the gas enters the edge of the spiral mesh 15. The space surrounded by the spiral mesh 15, the spiral plate 11 and the outer rotating plate 13 has silica gel filler. When air passes through, it moves along the spiral trajectory of the spiral mesh 15, the spiral plate 11 and the outer rotating plate 13, generating a centrifugal effect, which promotes the separation of oil in the gas. At the same time, the hydrophobic silica gel filler also plays a role in filtering the oil. Therefore, compared with the prior art, the separation and filtration of oil is promoted with the help of centrifugal action.

[0036] While the gas is moving in a spiral, the inner rotating plate 12 plays a guiding and blocking role, preventing too much gas from escaping directly to the filter layer mechanism. For the gas that does not enter the spiral mesh 15 when the air inlet pipe 28 is fed in, and the gas that escapes to the filter layer mechanism through the top of the inner rotating plate 12, the gas will pass through the cylindrical mesh 4 and the silica gel filler in the cover mesh 6 to filter the oil. This filtration scheme adopts a direct filtration method similar to the prior art, but it brings an improvement in that most of the gas filtration process is carried out at the spiral mesh 15, thereby greatly reducing the filtration burden at the filter layer mechanism. Therefore, when the two filtration effects are combined, a more comprehensive and thorough filtration effect is brought about.

[0037] By pulling the pull handle 24, the plug block 20 is separated from the inner side of the socket 19, and then the plug plate 16 and the sealing plate 18 can be taken out, and then the silica gel filler at the bottom of the spiral plate 11 can be collected and taken out through the opening originally blocked at the sealing plate 18. During the taking-out process, the user can put a container into the inner side of the tank body 1, and then use a rod-shaped tool to take it out, or use a mesh container to pour water on the upper side of the spiral plate 11 to rinse, or use the method of flushing water on the upper side of the spiral plate 11 without using a container to receive it below, and directly recover the filler through the drain pipe 30; the silica gel filler is re-inserted at the upper side of the spiral plate 11 to ensure the next use. Since the silica gel filler at the spiral mesh 15 has a large filtering burden in the entire filtering system, this part of the design brings about the effect of easy replacement of the filtering filler, thereby ensuring the filtering effect of oil in the gas.

[0038] For cleaning and maintenance of the filter layer mechanism, the motor 9 can be operated to rotate the shaft 2, so that the silica gel filler in the filter layer mechanism is subjected to centrifugal action to throw out the oil, thereby achieving the purpose of cleaning and maintenance. After a long period of use, after opening the top cover 25 and unscrewing the locking nut 8, the cover net 6 and the cylindrical net 4 can be moved up and removed in turn to completely replace the inner filler.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. An organic solvent tail gas recovery system using hydrophobic silica gel, comprising a tank (1), characterized in that: A spiral plate (11) is fixedly mounted on the inner surface of the tank body (1), an inner rotating plate (12) is fixedly connected to the inner side of the spiral plate (11), an outer rotating plate (13) is fixedly connected to the outer side of the spiral plate (11), a top rotating plate (14) is fixedly connected to the upper side of the outer rotating plate (13), a spiral net (15) is fixedly connected to the surfaces of the spiral plate (11) and the outer rotating plate (13), and plug plates (16) are slidably mounted on the two side surfaces of the tank body (1), and the two plug plates (16) correspond to Located on both sides of the spiral plate (11), the outer surface of the plug plate (16) is fixedly embedded with a retaining net (17), the front surface of the tank body (1) is fixedly embedded with an air intake pipe (28), the air intake pipe (28) is located in front of the lower side of the spiral plate (11), the inner side of the tank body (1) is rotatably mounted with a rotating shaft (2) through a driving mechanism, the outer surface of the rotating shaft (2) is sleeved with a plurality of filter layer mechanisms, the lower surface of the tank body (1) is fixedly connected with a drain pipe (30), and the upper end of the tank body (1) is provided with an exhaust portion; A sealing plate (18) extends from the front surface of the plug plate (16), and the sealing plate (18) is slidably embedded in the outer surface of the tank body (1). A socket (19) is formed through the front surface of the plug plate (16) and close to the sealing plate (18), and an insert block (20) is slidably inserted into the inner side of the socket (19) via an elastic mechanism. The elastic mechanism comprises a fixing plate (21) fixedly connected to the outer surface of the tank body (1) and close to the rear of the plug block (20); a plurality of guide rods (22) are slidably penetrated through the outer surface of the fixing plate (21); the front end of the guide rod (22) is fixedly connected to the rear surface of the plug block (20); a compression spring (23) is sleeved on the outer surface of the guide rod (22); the compression spring (23) is located between the plug block (20) and the fixing plate (21); and the rear ends of the plurality of guide rods (22) are fixedly connected to a pulling handle (24); The filtering layer mechanism comprises a first sleeve (5) slidably sleeved on the outer surface of the rotating shaft (2); a second sleeve (7) is threadedly sleeved on the upper end of the outer surface of the first sleeve (5); a cylindrical net (4) is fixedly connected to the outer surface of the first sleeve (5); a cover net (6) is fixedly connected to the outer surface of the second sleeve (7); the cover net (6) covers the upper end of the cylindrical net (4); a support plate (3) is fixedly sleeved on the outer surface of the rotating shaft (2), and the upper surface of the support plate (3) contacts the lower end of the first sleeve (5) located at the bottom; A locking nut (8) is threadedly sleeved on the upper end of the outer surface of the rotating shaft (2), and the lower end of the locking nut (8) contacts the upper end of the second sleeve (7) located at the top; A silica gel filler is contained in the space enclosed by the spiral net (15), the spiral plate (11) and the outer spiral plate (13).

2. The organic solvent tail gas recovery system using hydrophobic silica gel according to claim 1, characterized in that: The driving mechanism comprises a motor (9) fixedly mounted on the lower surface of the tank body (1) via a mounting seat (10), and an output shaft of the motor (9) is fixedly connected to the lower end of the rotating shaft (2).

3. The organic solvent tail gas recovery system using hydrophobic silica gel according to claim 1, characterized in that: The exhaust portion comprises a top cover (25) fixedly mounted on the upper end of the tank body (1); the edge of the top cover (25) is fixedly mounted to the edge of the tank body (1) via bolts (27); and an exhaust pipe (26) is fixedly embedded on the upper surface of the top cover (25).

4. The organic solvent tail gas recovery system using hydrophobic silica gel according to claim 1, characterized in that: No less than three supporting feet (29) are fixedly mounted on the outer surface of the tank body (1), and the supporting feet (29) extend downward.

Images