Tail gas treatment device for waste resin flameless molten salt oxidation equipment

Abstract

The utility model discloses a tail gas treatment device for waste resin flameless molten salt oxidation equipment, which relates to the technical field of waste resin treatment and comprises a molten salt oxidation reaction kettle and further comprises a tail gas separation structure arranged on one side of the molten salt oxidation reaction kettle and used for separating and filtering tail gas after waste resin oxidation; the tail gas separation structure comprises a fixing pipe, the fixing pipe is communicated with the fused salt oxidation reaction kettle through a first connecting pipe, a first shell is fixed to the top of the fixing pipe, the top of the first shell is in threaded connection with a second shell, and the top of the second shell is communicated with an exhaust pipe; and a fixed cylinder is fixed to the bottom of an inner cavity of the first shell, and an oil fume filter screen is fixed to the inner wall of the fixed cylinder. Oil fume in the tail gas can be filtered through the oil fume filter screen, then other tail gas can be discharged through the round holes, filtered again through the activated carbon adsorption net and finally discharged from the exhaust pipe, and the tail gas treatment effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste resin treatment, in particular to a tail gas treatment device for a flameless molten salt oxidation device for waste resin. Background Art

[0002] Resin is an organic biopolymer with high molecular weight, which can usually be classified into natural resin and synthetic resin. In industrial production and daily life, resin is widely used in the production of products such as plastics, coatings, and adhesives. Waste resin refers to the waste generated during production and use, including production waste resin and waste resin discarded after use, etc.

[0003] During the production and use of resin, some waste resin will be generated. Among them, the molten salt oxidation method, as a flameless pyrolysis reaction, can effectively adsorb the acid gas generated by the pyrolysis of resin and can also effectively intercept the radionuclides in the resin. However, when the waste resin is subjected to high-temperature treatment, polluting tail gas will be generated. The tail gas generated by this thermoplastic resin during heating is an oil-containing tail gas, also known as oily tail gas, which is a mixture of fumes and waste gas. In the prior art, the method of filtering this kind of tail gas usually adopts two-stage or three-stage activated carbon adsorption, but this method cannot filter the oil in the tail gas, resulting in the oil being adsorbed onto the fan, which affects the treatment effect of the tail gas. Content of the Utility Model

[0004] The purpose of the utility model is to make up for the deficiencies of the prior art and provide a tail gas treatment device for a flameless molten salt oxidation device for waste resin.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A tail gas treatment device for a flameless molten salt oxidation device for waste resin, including a molten salt oxidation reaction kettle, further including:

[0006] A tail gas separation structure, which is arranged on one side of the molten salt oxidation reaction kettle and is used for separating and filtering the tail gas after the oxidation of waste resin;

[0007] Among them, the tail gas separation structure includes a fixed pipe, the fixed pipe is communicated with the molten salt oxidation reactor through a first connecting pipe, a first housing is fixed at the top of the fixed pipe, a second housing is threadedly connected to the top of the first housing, an exhaust pipe is communicated with the top of the second housing, a fixed cylinder is fixed at the bottom of the inner cavity of the first housing, an oil fume filter screen is fixed on the inner wall of the fixed cylinder, a scraping head is sleeved on the inner wall of the oil fume filter screen, a magnet is embedded at the top of the scraping head, a connecting rod is installed at the bottom end of the magnet, a limiting pipe is fixed at the top of the inner cavity of the oil fume filter screen, a corrugated pipe is sleeved on the inner wall of the limiting pipe, an air delivery pipe is fixed at the top of the oil fume filter screen, a movable ring is sleeved on the outer surface of the oil fume filter screen, bristles are fixed on the inner side of the movable ring, a number of groups of round holes are formed on the outer side of the fixed cylinder, an activated carbon adsorption net is sleeved on the outer surface of the fixed cylinder, a piston member is fixed at the bottom end of the connecting rod, a second connecting pipe is fixed to the bottom end of the fixed pipe through blades, and a return spring is sleeved inside the fixed pipe.

[0008] As described above, the movable ring is made of iron, and when the magnet moves, it can drive the movable ring to move synchronously along the outer surface of the oil fume filter screen.

[0009] As described above, the bottom end of the air delivery pipe is fixed to the corrugated pipe, and the other end of the air delivery pipe passes through the first housing and is communicated with an external air pump.

[0010] As described above, the top end of the exhaust pipe is connected to an external negative pressure machine, and the bottom end of the piston member is sleeved on the inner wall of the fixed pipe.

[0011] As described above, the connecting rod is sleeved on the outer surface of the limiting pipe, the bottom end of the corrugated pipe is connected to the connecting rod, and when the inside of the corrugated pipe is filled with gas, it can push the connecting rod to move downward.

[0012] As described above, the top of the piston member is inclined outward, and when the piston member moves downward, its bottom can be flush with the top of the second connecting pipe.

[0013] As described above, the return spring elastically supports between the piston member and the second connecting pipe, and the bristles contact the mesh holes on the surface of the oil fume filter screen.

[0014] Compared with the prior art, the tail gas treatment device for a waste resin flameless molten salt oxidation device has the following beneficial effects:

[0015] 1. The utility model conducts high-temperature and safe inorganic treatment on resin waste through a molten salt oxidation reactor. At this time, a negative pressure machine extracts gas from the exhaust pipe, enabling the tail gas generated inside the molten salt oxidation reactor to enter the inner cavity of the oil fume filter through the first connecting pipe and the fixed pipe. At this time, the oil fume in the tail gas will be filtered by the oil fume filter, and then the remaining tail gas will be discharged through the round holes. At this time, the tail gas will be filtered again by the activated carbon adsorption net, enter the space between the first shell and the second shell, and finally be discharged from the exhaust pipe, improving the effect of tail gas treatment.

[0016] 2. By filling gas inside the gas transmission pipe, the bellows will stretch and squeeze the connecting rod, causing the connecting rod to drive the scraping head to move along the inner wall of the oil fume filter, scraping the oil fume impurities on the inner wall of the oil fume filter. Subsequently, through the cooperation between the magnet and the movable ring, the movable ring can be driven to move downward along the outer surface of the oil fume filter, and the bristles are used to dredge the mesh holes of the oil fume filter, enabling the impurities to fall on the top of the piston part. At the same time, when the piston part reaches the top of the second connecting pipe, the impurities will slide towards both sides and be discharged through the gaps between the blades, facilitating the cleaning of the oil fume filter and preventing the oil fume filter from being blocked.

[0017] Other advantages, objectives, and features of the utility model will be elaborated to some extent in the subsequent description, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 is a partial cross-sectional structural schematic diagram of the side of the utility model;

[0020] Figure 3 is of the utility model Figure 2 is an enlarged structural schematic diagram of part A in;

[0021] Figure 4 is a disassembly structural schematic diagram of the tail gas separation structure of the utility model;

[0022] Figure 5 is a structural schematic diagram of the bottom of the tail gas separation structure of the utility model.

[0023] In the figure: 1. molten salt oxidation reactor; 2. first connecting pipe; 3. fixed pipe; 4. first housing; 5. second housing; 6. exhaust pipe; 7. fixed cylinder; 8. oil fume filter screen; 9. scraping head; 10. magnet; 11. connecting rod; 12. limiting pipe; 13. bellows; 14. gas transmission pipe; 15. movable ring; 16. brush hair; 17. round hole; 18. activated carbon adsorption net; 19. piston part; 20. return spring; 21. blade; 22. second connecting pipe. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] As Figures 1-5 shown, the present invention provides a technical solution: a tail gas treatment device for a flameless molten salt oxidation device for waste resin, including a molten salt oxidation reactor 1, and further including:

[0026] A tail gas separation structure, which is arranged on one side of the molten salt oxidation reactor 1 and is used for separating and filtering the tail gas after the oxidation of waste resin;

[0027] Among them, the tail gas separation structure includes a fixed pipe 3. The fixed pipe 3 is communicated with the molten salt oxidation reactor 1 through a first connecting pipe 2. The top of the fixed pipe 3 is fixed with a first housing 4. The top of the first housing 4 is threadedly connected with a second housing 5. The top of the second housing 5 is communicated with an exhaust pipe 6. The bottom of the inner cavity of the first housing 4 is fixed with a fixed cylinder 7. The inner wall of the fixed cylinder 7 is fixed with an oil fume filter screen 8. The inner wall of the oil fume filter screen 8 is sleeved with a scraping head 9. A magnet 10 is embedded at the top of the scraping head 9. The bottom end of the magnet 10 is provided with a connecting rod 11. The top of the inner cavity of the oil fume filter screen 8 is fixed with a limiting pipe 12. The inner wall of the limiting pipe 12 is sleeved with a bellows 13. The top of the oil fume filter screen 8 is fixed with a gas transmission pipe 14. The outer surface of the oil fume filter screen 8 is sleeved with a movable ring 15. The inner side of the movable ring 15 is fixed with brush hair 16. A plurality of groups of round holes 17 are opened on the outer side of the fixed cylinder 7. The outer surface of the fixed cylinder 7 is sleeved with an activated carbon adsorption net 18. The bottom end of the connecting rod 11 is fixed with a piston part 19. The bottom end of the fixed pipe 3 is fixed with a second connecting pipe 22 through a blade 21. A return spring 20 is sleeved inside the fixed pipe 3.

[0028] The resin waste is subjected to high-temperature and safe inorganic treatment in the molten salt oxidation reactor 1. At this time, a negative pressure machine extracts gas from the exhaust pipe 6, so that the tail gas generated inside the molten salt oxidation reactor 1 enters the inner cavity of the oil fume filter net 8 through the first connecting pipe 2 and the fixed pipe 3. At this time, the oil fume in the tail gas will be filtered by the oil fume filter net 8, and then the tail gas will be discharged through the round hole 17. At this time, the tail gas will be filtered again by the activated carbon adsorption net 18 to improve the effect of tail gas treatment. At the same time, by filling gas inside the air delivery pipe 14, the corrugated pipe 13 will be stretched, and the connecting rod 11 will be squeezed, so that the connecting rod 11 drives the scraping head 9 to move along the inner wall of the oil fume filter net 8 to scrape off the oil fume impurities on the inner wall of the oil fume filter net 8. Then, through the cooperation between the magnet 10 and the movable ring 15, the movable ring 15 can be driven to move downward along the outer surface of the oil fume filter net 8, and the mesh holes of the oil fume filter net 8 can be dredged by using the brush bristles 16, so that the impurities fall on the top of the piston part 19. At the same time, when the piston part 19 reaches the top of the second connecting pipe 22, the impurities will slide to both sides and be discharged through the gaps between the blades 21, which is convenient for cleaning the oil fume filter net 8 and preventing the oil fume filter net 8 from being blocked.

[0029] As Figure 3 shown, the movable ring 15 is made of iron. When the magnet 10 moves, it can drive the movable ring 15 to move synchronously along the outer surface of the oil fume filter net 8.

[0030] Through the design of the movable ring 15 and the magnet 10, the magnet 10 can adsorb the movable ring 15. Thus, when the scraping head 9 moves, the magnet 10 and the movable ring 15 can be driven to move, so that when the scraping head 9 scrapes off the impurities on the inner wall of the oil fume filter net 8, the brush bristles 16 can dredge the oil fume filter net 8.

[0031] As Figure 2 、 3 shown, the bottom end of the air delivery pipe 14 is fixed to the corrugated pipe 13, and the other end of the air delivery pipe 14 passes through the first housing 4 and is connected to an external air pump.

[0032] Through the cooperation between the air delivery pipe 14 and the corrugated pipe 13, when gas is input into the corrugated pipe 13, the corrugated pipe 13 will expand. And through the cooperation between the corrugated pipe 13 and the limiting pipe 12, the corrugated pipe 13 can be prevented from bending. Thus, when the corrugated pipe 13 expands, it will stretch and squeeze the connecting rod 11, so that the connecting rod 11 moves downward.

[0033] As Figure 1 、 2 shown, the top end of the exhaust pipe 6 is connected to an external negative pressure machine, and the bottom end of the piston part 19 is sleeved on the inner wall of the fixed pipe 3.

[0034] Through the design of the exhaust pipe 6, gas can be extracted by a negative pressure machine. At the same time, through the cooperation between the piston member 19 and the fixed pipe 3, the bottom of the fixed pipe 3 can be sealed, enabling it to extract the gas inside the molten salt oxidation reactor 1 only through the first connecting pipe 2.

[0035] As Figure 2 , 3 shown, the connecting rod 11 is sleeved on the outer surface of the limiting pipe 12, and the bottom end of the bellows 13 is connected to the connecting rod 11. When the inside of the bellows 13 is filled with gas, it can push the connecting rod 11 to move downward.

[0036] Through the cooperation between the bellows 13 and the connecting rod 11, the bellows 13 can drive the connecting rod 11 to move along the outer surface of the limiting pipe 12, thereby driving the scraping head 9 to move along the inner wall of the oil fume filter net 8 to scrape the impurities on the inner wall of the oil fume filter net 8.

[0037] As Figure 2 shown, the top of the piston member 19 is inclined outward. When the piston member 19 moves downward, its bottom can be flush with the top of the second connecting pipe 22.

[0038] Through the design of the piston member 19, since the top of the piston member 19 is inclined outward, the impurities falling on the top of the piston member 19 will slide outward. Thus, when the piston member 19 moves to the bottom of the fixed pipe 3, the impurities can be discharged from the gaps between the blades 21.

[0039] As Figure 2 , 3 shown, the return spring 20 is elastically supported between the piston member 19 and the second connecting pipe 22, and the brush bristles 16 are in contact with the mesh holes on the surface of the oil fume filter net 8.

[0040] Through the design of the return spring 20, the piston member 19 has good elastic reset performance. At this time, since the return spring 20 is in a compressed state, it will apply an elastic force to the piston member 19, so that the scraping head 9 can be driven by the connecting rod 11 to reset.

[0041] Working principle:

[0042] First, the resin waste is subjected to high-temperature and safe inorganic treatment through the molten salt oxidation reactor 1. Subsequently, the exhaust gas is extracted through the exhaust pipe 6 by a negative pressure machine, so that the tail gas generated inside the molten salt oxidation reactor 1 enters the inner cavity of the oil fume filter net 8 through the first connecting pipe 2 and the fixed pipe 3. At this time, the oil fume in the tail gas will be filtered by the oil fume filter net 8. Subsequently, the tail gas will be discharged through the round hole 17 and filtered again by the activated carbon adsorption net 18. When the equipment stops working, by filling the inside of the gas transmission pipe 14 with gas, the corrugated pipe 13 squeezes the connecting rod 11, so that the connecting rod 11 drives the scraping head 9 to move along the inner wall of the oil fume filter net 8, and scrapes the oil fume impurities on the inner wall of the oil fume filter net 8. Subsequently, through the cooperation between the magnet 10 and the movable ring 15, the movable ring 15 can be driven to move downward along the outer surface of the oil fume filter net 8, and the mesh holes of the oil fume filter net 8 are dredged by the bristles 16, so that the impurities fall on the top of the piston part 19. At the same time, when the piston part 19 reaches the top of the second connecting pipe 22, the impurities will slide to both sides and be discharged through the gaps between the blades 21, completing the cleaning of the oil fume filter net 8. At the same time, through the cooperation between the second housing 5 and the first housing 4, the components inside can be replaced or cleaned.

[0043] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tail gas treatment device for a flameless molten salt oxidation device for waste resin, comprising a molten salt oxidation reactor (1), characterized in that: Also includes: A tail gas separation structure, which is arranged on one side of the molten salt oxidation reactor (1) and is used to separate and filter the tail gas after the waste resin is oxidized; The exhaust gas separation structure comprises a fixed pipe (3), wherein the fixed pipe (3) is connected to the molten salt oxidation reactor (1) through a first connecting pipe (2), a first shell (4) is fixed to the top of the fixed pipe (3), a second shell (5) is threadedly connected to the top of the first shell (4), the top of the second shell (5) is connected to an exhaust pipe (6), a fixed cylinder (7) is fixed to the bottom of the inner cavity of the first shell (4), an oil fume filter (8) is fixed to the inner wall of the fixed cylinder (7), a scraper (9) is sleeved on the inner wall of the oil fume filter (8), a magnet (10) is embedded in the top of the scraper (9), a connecting rod (11) is installed at the bottom of the magnet (10), and the oil fume filter (8) is connected to the inner wall of the oil fume filter (8). ) is fixed with a limit tube (12) at the top of the inner cavity, the inner wall of the limit tube (12) is sleeved with a bellows (13), the top of the oil fume filter (8) is fixed with an air supply pipe (14), the outer surface of the oil fume filter (8) is sleeved with a movable ring (15), the inner side of the movable ring (15) is fixed with bristles (16), the outer side of the fixed cylinder (7) is provided with a plurality of groups of circular holes (17), the outer surface of the fixed cylinder (7) is sleeved with an activated carbon adsorption net (18), the bottom end of the connecting rod (11) is fixed with a piston member (19), the bottom end of the fixed tube (3) is fixed with a second connecting tube (22) through a blade (21), and the inner side of the fixed tube (3) is sleeved with a return spring (20).

2. The tail gas treatment device for a flameless molten salt oxidation device for waste resin according to claim 1, characterized in that: The movable ring (15) is made of iron, and when the magnet (10) moves, it can drive the movable ring (15) to move synchronously along the outer surface of the oil fume filter (8).

3. The tail gas treatment device for a flameless molten salt oxidation device for waste resin according to claim 1, characterized in that: The bottom end of the air delivery pipe (14) is fixed to the corrugated pipe (13), and the other end of the air delivery pipe (14) passes through the first shell (4) and is connected to an external air pump.

4. The tail gas treatment device for a flameless molten salt oxidation device for waste resin according to claim 1, characterized in that: The top end of the exhaust pipe (6) is connected to an external negative pressure machine, and the bottom end of the piston member (19) is sleeved with the inner wall of the fixed pipe (3).

5. The tail gas treatment device for a flameless molten salt oxidation device for waste resin according to claim 1, characterized in that: The connecting rod (11) is sleeved on the outer surface of the limiting tube (12), and the bottom end of the bellows (13) is connected to the connecting rod (11). When the interior of the bellows (13) is filled with gas, the connecting rod (11) can be pushed to move downward.

6. The tail gas treatment device for a flameless molten salt oxidation device for waste resin according to claim 1, characterized in that: The top of the piston member (19) is inclined toward the outer periphery, and when the piston member (19) moves downward, its bottom can be flush with the top of the second connecting pipe (22).

7. The tail gas treatment device for a flameless molten salt oxidation device for waste resin according to claim 1, characterized in that: The return spring (20) is elastically supported between the piston member (19) and the second connecting pipe (22), and the bristles (16) are in contact with mesh holes on the surface of the oil fume filter (8).

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