CN214598197U

CN214598197U - Tail gas step absorbing device for producing anhydrous hydrogen fluoride

Info

Publication number: CN214598197U
Application number: CN202022410423.4U
Authority: CN
Inventors: 陈维; 袁靖; 曾河淞; 吴强豪; 池涛涛
Original assignee: Guizhou Wengfu Kaifu Fluorosilicon New Material Co ltd
Current assignee: Guizhou Wengfu Kaifu Fluorosilicon New Material Co ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-11-05
Anticipated expiration: 2030-10-27

Abstract

The utility model discloses a tail gas step absorption device for producing anhydrous hydrogen fluoride, which belongs to the technical field of anhydrous hydrogen fluoride production, and comprises a waste heat recovery box, a serpentine heat exchange tube, a purification tower, a spiral stirring blade, a packing plate, a nozzle, a cam, a dryer and an active carbon adsorption plate, wherein the left side of the waste heat recovery box is provided with an air inlet pipe, the serpentine heat exchange tube is installed in the waste heat recovery box, and the right side of the waste heat recovery box is provided with the purification tower; a first rotating shaft is arranged in the purifying tower, and a spiral stirring blade is arranged on the first rotating shaft; the second connecting pipe is installed to the right side below of purification tower, is provided with the sliding sleeve between third connecting pipe and the purification tower, and the below equipartition of third connecting pipe is provided with a plurality of shower nozzles. The utility model discloses a cooperation between snakelike heat exchange tube and the waste heat recovery case that set up is used, can carry out recycle, more energy-concerving and environment-protective to the waste heat of tail gas.

Description

Tail gas step absorbing device for producing anhydrous hydrogen fluoride

Technical Field

The utility model belongs to the technical field of anhydrous hydrogen fluoride production, specifically a tail gas step absorbing device of anhydrous hydrogen fluoride of production.

Background

In the anhydrous hydrogen fluoride production process, contain gases such as hydrogen tetrafluoride and hydrogen fluoride in the tail gas of production, these gaseous direct discharge can cause very big pollution to the environment, also have serious harm to human health simultaneously, present most devices absorbent structure who is used for handling anhydrous hydrogen fluoride tail gas is more single, often only possess one deck tail gas absorbent structure, it is not abundant to lead to tail gas absorption purification easily, still contain a certain amount of hydrogen tetrafluoride and hydrogen fluoride gas in the tail gas after the purification, and contain certain waste heat in the tail gas that anhydrous hydrogen fluoride production produced, current tail gas processing apparatus generally only absorbs the harmful gas of tail gas, waste heat to tail gas lacks the recycle structure, cause the waste of a heat energy resource.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a tail gas step absorbing device of anhydrous hydrogen fluoride of production to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a tail gas step absorption device for producing anhydrous hydrogen fluoride comprises a waste heat recovery box, a serpentine heat exchange tube, a purification tower, spiral stirring blades, a packing plate, a sprayer, a cam, a dryer and an active carbon adsorption plate, wherein an air inlet tube is arranged on the left side of the waste heat recovery box, the right side of the air inlet tube extends into the waste heat recovery box, the serpentine heat exchange tube is mounted in the waste heat recovery box and is connected with the serpentine heat exchange tube, the purification tower is arranged on the right side of the waste heat recovery box, a first connecting tube is connected to the right side of the serpentine heat exchange tube, the right side of the first connecting tube extends to the lower part of the interior of the purification tower, and a plurality of air nozzles are uniformly distributed on the first connecting tube; a first rotating shaft is arranged in the purifying tower and is positioned above the air nozzle, a first motor is arranged on the right side of the first rotating shaft, spiral stirring blades are arranged on the first rotating shaft, a plurality of guide plates are arranged on the inner walls of the left side and the right side in the purifying tower in a staggered mode, and a packing plate is arranged above each guide plate; the utility model discloses a purification tower, including purification tower, first connecting pipe, second connecting pipe, water pump, two flexible pipes are installed from top to bottom in the top left side of second connecting pipe, the left side of flexible pipe is connected with the third connecting pipe, the left and right sides of third connecting pipe all extends to the outside of purification tower, be provided with the sliding sleeve between third connecting pipe and the purification tower, the below equipartition of third connecting pipe is provided with a plurality of shower nozzles, and crisscross setting each other between the shower nozzle on two upper and lower third connecting pipes, the connecting plate is installed in the left side of third connecting pipe.

As a further aspect of the present invention: a clamping groove is formed between the packing plate and the inner wall of the purification tower, the packing plate is clamped on the clamping groove, and a handle is arranged on the right side of the packing plate.

As a further aspect of the present invention: the waste heat recovery tank is characterized in that a water filling port is arranged above the waste heat recovery tank, a water outlet is arranged below the waste heat recovery tank, a liquid filling port is arranged on the right side of the purification tower, and a liquid discharging port is arranged below the left side of the purification tower.

As a further aspect of the present invention: the fixed plate is installed to the left side top of purifying column, and the second motor is installed to the below of fixed plate, and the second pivot is installed to the below of second motor, and the cam is installed to the below of second pivot, and cam and connecting plate contact.

As a further aspect of the present invention: an annular cushion block is arranged above the inner wall of the purification tower, a filter screen is arranged above the annular cushion block, and an active carbon adsorption plate is arranged above the filter screen.

As a further aspect of the present invention: a tower cover is installed above the purification tower, an exhaust pipe is installed above the tower cover, and a dryer is installed on the exhaust pipe.

Compared with the prior art, the beneficial effects of the utility model are that: the snakelike heat exchange tube and the waste heat recovery tank are matched for use, so that waste heat of tail gas can be recycled, and the energy is saved and the environment is protected; the spiral stirring blades, the guide plate, the filler plate, the spray head, the filter screen and the activated carbon adsorption plate are matched for use, so that the tail gas is absorbed in a stepped and multi-level manner, and the tail gas is more fully absorbed; through the cooperation use between second motor, second pivot, cam, sliding sleeve and the flexible pipe that sets up, reciprocating motion about can making the shower nozzle makes the shower nozzle spray alkali lye more comprehensive, improves the absorption effect to tail gas.

Drawings

Fig. 1 is a schematic structural diagram of a tail gas step absorption device for producing anhydrous hydrogen fluoride.

Fig. 2 is an enlarged schematic structural diagram of a tail gas step absorption device A for producing anhydrous hydrogen fluoride.

FIG. 3 is a schematic top view of a ring-shaped pad block in a step absorber for producing anhydrous hydrogen fluoride.

In the figure: 1. a waste heat recovery tank; 2. an air inlet pipe; 3. a serpentine heat exchange tube; 4. a water filling port; 5. a water outlet; 6. a purification tower; 7. a first connecting pipe; 8. an air nozzle; 9. a first rotating shaft; 10. a spiral stirring blade; 11. a first motor; 12. a baffle; 13. a liquid filling port; 14. a liquid discharge port; 15. a card slot; 16. a filler sheet; 17. a handle; 18. a second connecting pipe; 19. A water pump; 20. a telescopic pipe; 21. a third connecting pipe; 22. a spray head; 23. a connecting plate; 24. a fixing plate; 25. a second motor; 26. a second rotating shaft; 27. a cam; 28. a sliding sleeve; 29. a tower cover; 30. an exhaust pipe; 31. a dryer; 32. a ring-shaped cushion block; 33. a filter screen; 34. an activated carbon adsorption plate.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Referring to fig. 1-3, a tail gas step absorption device for producing anhydrous hydrogen fluoride comprises a waste heat recovery tank 1, a serpentine heat exchange tube 3, a purification tower 6, a spiral stirring blade 10, a packing plate 16, a nozzle 22, a cam 27, a dryer 31 and an activated carbon adsorption plate 34; the left side of the waste heat recovery tank 1 is provided with an air inlet pipe 2, the right side of the air inlet pipe 2 extends into the waste heat recovery tank 1, a snake-shaped heat exchange pipe 3 is installed in the waste heat recovery tank 1, the air inlet pipe 2 is connected with the snake-shaped heat exchange pipe 3, a water filling port 4 is arranged above the waste heat recovery tank 1, a water outlet 5 is arranged below the waste heat recovery tank 1, tail gas in the air inlet pipe 2 enters the snake-shaped heat exchange pipe 3 and can exchange heat with cold water in the waste heat recovery tank 1, waste heat of the tail gas is recycled, the energy is saved, the environment is protected, the right side of the waste heat recovery tank 1 is provided with a purification tower 6, the right side of the snake-shaped heat exchange pipe 3 is connected with a first connecting pipe 7, the right side of the first connecting pipe 7 extends to the lower part inside the purification tower 6, a plurality of air nozzles 8 are uniformly distributed on the first connecting pipe 7, the air nozzles 8 are arranged in the purification tower 6, the right side of the purification tower 6 is provided with a liquid filling port 13, a certain amount of alkali liquor is added into the purifying tower 6 through the liquid adding port 13, a liquid discharging port 14 is arranged below the left side of the purifying tower 6, saturated solution in the purifying tower 6 can be timely discharged through the liquid discharging port 14, and then the alkali liquor is timely added through the liquid adding port 13, so that the high-efficiency absorption capacity is constantly kept.

The purification tower is characterized in that a first rotating shaft 9 is arranged inside the purification tower 6, the first rotating shaft 9 is positioned above the air nozzle 8, a first motor 11 is arranged on the right side of the first rotating shaft 9, a spiral stirring blade 10 is arranged on the first rotating shaft 9, alkali liquor in the purification tower 6 can flow through the arranged spiral stirring blade 10, tail gas can be better contacted with the alkali liquor, the tail gas absorption effect is improved, a plurality of guide plates 12 are arranged on the inner walls of the left side and the right side in the purification tower 6 in a staggered manner, the residence time and the stroke of the tail gas in the purification tower 6 can be increased through the arranged guide plates 12, the tail gas is more sufficiently purified, a filler plate 16 is arranged above the guide plates 12, a clamping groove 15 is arranged between the filler plate 16 and the inner wall of the purification tower 6, the filler plate 16 is clamped on the clamping groove 15, a handle 17 is arranged on the right side of the filler plate 16, and the clamping groove 15 and the handle 17 are convenient for disassembling and assembling the filler plate 16, the packing plate 16 is convenient to replace or clean in time, and the packing plate 16 can keep efficient absorption of tail gas all the time.

A second connecting pipe 18 is arranged below the right side of the purifying tower 6, a water pump 19 is arranged on the second connecting pipe 18, two extension pipes 20 are arranged on the left side above the second connecting pipe 18 from top to bottom, a third connecting pipe 21 is connected to the left side of each extension pipe 20, the left side and the right side of each third connecting pipe 21 extend to the outer side of the purifying tower 6, a sliding sleeve 28 is arranged between each third connecting pipe 21 and the purifying tower 6, a plurality of spray heads 22 are uniformly distributed below the third connecting pipe 21, the spray heads 22 on the upper and the lower third connecting pipes 21 are arranged in a staggered manner, a connecting plate 23 is arranged on the left side of each third connecting pipe 21, a fixing plate 24 is arranged above the left side of the purifying tower 6, a second motor 25 is arranged below the fixing plate 24, a second rotating shaft 26 is arranged below the second motor 25, a cam 27 is arranged below the second rotating shaft 26, and the cam 27 is in contact with the connecting plate 23, can hit connecting plate 23 through the cam 27 that sets up for reciprocating motion about third connecting pipe 21, reciprocating motion about third connecting pipe 21 can drive shower nozzle 22 can improve shower nozzle 22's the effect of spraying, can be better to tail gas absorb.

The inner wall top of purifying tower 6 is provided with loop type cushion 32, filter screen 33 is installed to the top of loop type cushion 32, activated carbon adsorption plate 34 is installed to the top of filter screen 33, the loop type cushion 32 that improves the setting can be convenient for filter screen 33 and activated carbon adsorption plate 34's installation and dismantlement more, tower lid 29 is installed to the top of purifying tower 6, through threaded connection between tower lid 29 and the purifying tower 6, through adopting threaded connection between with purifying tower 6 and the tower lid 29, convenient to detach and installation, conveniently take out filter screen 33 and activated carbon adsorption plate 34, blast pipe 30 is installed to the top of tower lid 29, install desicator 31 on the blast pipe 30, can dry the tail gas of purification through the desicator 31 that sets up.

The utility model discloses a theory of operation is: firstly, tail gas is conveyed into a snakelike heat exchange tube 3 through an air inlet tube 2, heat exchange is carried out between tail gas waste heat in the snakelike heat exchange tube 3 and cold water in a waste heat recovery tank 1, then the tail gas waste heat is sprayed out through an air nozzle 8 and enters a purification tower 6, a first motor 11 is started, the first motor 11 drives a first rotating shaft 9 to rotate, the first rotating shaft 9 drives a spiral stirring blade 10 to rotate, and the spiral stirring blade 10 stirs alkali liquor in the purification tower 6, so that the tail gas and the alkali liquor are fully mixed; then the tail gas absorbs again through packing plate 16 after guide plate 12, simultaneously carry the shower nozzle 22 blowout through water pump 19 with the alkali lye in the purifying tower 6, drive second pivot 26 through second motor 25 and rotate, second pivot 26 drives cam 27 and rotates, cam 27 hits the hitting to connecting plate 23, make connecting plate 23 drive third connecting pipe 21 left and right reciprocating motion, third connecting pipe 21 drives shower nozzle 22 left and right reciprocating motion and sprays, filter the tail gas and adsorb particulate pollutant through filter screen 33 and active carbon adsorption plate 34, then discharge through blast pipe 30 after drying through desicator 31.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. A tail gas step absorption device for producing anhydrous hydrogen fluoride comprises a waste heat recovery tank (1), a snakelike heat exchange tube (3), a purification tower (6), a spiral stirring blade (10), a packing plate (16), a spray head (22), a cam (27), a dryer (31) and an active carbon adsorption plate (34), the waste heat recovery device is characterized in that an air inlet pipe (2) is arranged on the left side of a waste heat recovery box (1), the right side of the air inlet pipe (2) extends into the waste heat recovery box (1), a snake-shaped heat exchange pipe (3) is installed in the waste heat recovery box (1), the air inlet pipe (2) is connected with the snake-shaped heat exchange pipe (3), a purification tower (6) is arranged on the right side of the waste heat recovery box (1), a first connecting pipe (7) is connected to the right side of the snake-shaped heat exchange pipe (3), the right side of the first connecting pipe (7) extends to the lower portion of the interior of the purification tower (6), and a plurality of air nozzles (8) are uniformly distributed on the first connecting pipe (7); a first rotating shaft (9) is arranged inside the purifying tower (6), the first rotating shaft (9) is positioned above the air nozzle (8), a first motor (11) is arranged on the right side of the first rotating shaft (9), a spiral stirring blade (10) is arranged on the first rotating shaft (9), a plurality of guide plates (12) are arranged on the inner walls of the left side and the right side in the purifying tower (6) in a staggered mode, and a packing plate (16) is arranged above the guide plates (12); second connecting pipe (18) are installed to the right side below of purifying tower (6), install water pump (19) on second connecting pipe (18), two flexible pipe (20) are installed from top to bottom in the top left side of second connecting pipe (18), the left side of flexible pipe (20) is connected with third connecting pipe (21), the left and right sides of third connecting pipe (21) all extends to the outside of purifying tower (6), be provided with between third connecting pipe (21) and purifying tower (6) sliding sleeve (28), the below equipartition of third connecting pipe (21) is provided with a plurality of shower nozzles (22), and shower nozzle (22) on two upper and lower third connecting pipes (21) crisscross the setting each other, connecting plate (23) are installed in the left side of third connecting pipe (21).

2. The tail gas step absorption device for producing anhydrous hydrogen fluoride according to claim 1, wherein a clamping groove (15) is formed between the packing plate (16) and the inner wall of the purification tower (6), the packing plate (16) is clamped on the clamping groove (15), and a handle (17) is arranged on the right side of the packing plate (16).

3. The tail gas step absorption device for producing anhydrous hydrogen fluoride according to claim 1, wherein a water filling port (4) is arranged above the waste heat recovery tank (1), a water outlet (5) is arranged below the waste heat recovery tank (1), a liquid filling port (13) is arranged on the right side of the purification tower (6), and a liquid discharging port (14) is arranged below the left side of the purification tower (6).

4. The tail gas step absorption device for producing anhydrous hydrogen fluoride according to claim 1, wherein a fixing plate (24) is installed above the left side of the purification tower (6), a second motor (25) is installed below the fixing plate (24), a second rotating shaft (26) is installed below the second motor (25), a cam (27) is installed below the second rotating shaft (26), and the cam (27) is in contact with the connecting plate (23).

5. The tail gas step absorption device for producing anhydrous hydrogen fluoride according to claim 1, wherein an annular cushion block (32) is arranged above the inner wall of the purification tower (6), a filter screen (33) is arranged above the annular cushion block (32), and an activated carbon adsorption plate (34) is arranged above the filter screen (33).

6. The tail gas step absorption device for producing anhydrous hydrogen fluoride according to claim 1, wherein a tower cover (29) is installed above the purification tower (6), an exhaust pipe (30) is installed above the tower cover (29), and a dryer (31) is installed on the exhaust pipe (30).