CN221815687U - Chemical production safety tail gas treatment device - Google Patents

Abstract

The utility model relates to the technical field of tail gas treatment, specifically to a tail gas treatment device for safe production of chemical industry. The tail gas treatment device for safe production of chemical industry comprises a reactor, the reactor is connected to a premixing tank through a primary induced draft fan, the premixing tank is connected to a spray tower through a solid-liquid separator, the spray tower is connected to an activated carbon adsorption tower through a secondary induced draft fan, and a U-shaped activated carbon adsorber and an inclined air permeable plate are arranged inside the activated carbon adsorption tower, and the U-shaped activated carbon adsorber is located above the inclined air permeable plate. The device introduces tail gas into the premixing tank through the arrangement of the premixing tank and the solid-liquid separator, preheats the raw materials in the premixing tank, greatly improves the production efficiency, and introduces the liquid phase in the solid-liquid separator into the sampling port, greatly improving the sampling efficiency.

Description

Chemical production safety tail gas treatment device

Technical Field

The utility model relates to the technical field of tail gas treatment, in particular to a tail gas treatment device for safe production of chemical industry.

Background Art

A large amount of tail gas is generated during the chemical production process, which contains various harmful substances, such as sulfide, nitrogen oxide, volatile organic compounds, etc. If these tail gases are discharged directly without treatment, they will cause serious pollution to the environment and endanger people's health.

During production, existing equipment mostly generates tail gas that is directly adsorbed and then incinerated. This not only greatly increases the output of industrial solid waste, leading to increased treatment costs, but also produces a lot of polluting gases after incineration, which need to be treated again.

Chinese patent application CN203240593U was published on October 16, 2013. It discloses a safe and environmentally friendly treatment device for tail gas from glycerin production, including a buffer tank 1 with filler, a water absorption tank 2, a flame arrester 3, a combustion furnace 4 and a safety valve 5; the buffer tank 1 with filler is connected to the combustion furnace 4 through a pipeline through the flame arrester 3; a branch pipeline is drawn between the buffer tank 1 with filler and the flame arrester 3, connected to the safety valve 5 and then to the water absorption tank 2. It directly uses the incineration method, which greatly increases the cost of post-processing.

Utility Model Content

In view of the above deficiencies in the prior art, the purpose of the utility model is to provide a chemical production safety tail gas treatment device, which introduces the tail gas into the premixing tank through the arrangement of a premixing tank and a solid-liquid separator, and preheats the raw materials in the premixing tank, thereby greatly improving the production efficiency; and by introducing the liquid phase in the solid-liquid separator into the sampling port, the sampling efficiency is greatly improved; by arranging an inclined air permeable plate, an activated carbon replacement port and an activated carbon outlet, the replacement efficiency of activated carbon in the activated carbon adsorption tower is greatly improved, and the tail gas treatment efficiency is improved.

The utility model is realized by adopting the following technical solutions:

The chemical production safety tail gas treatment device comprises a reactor, which is connected to a premixing tank through a primary induced draft fan, the premixing tank is connected to a spray tower through a solid-liquid separator, the spray tower is connected to an activated carbon adsorption tower through a secondary induced draft fan, and a U-shaped activated carbon adsorber and an inclined air permeable plate are arranged inside the activated carbon adsorption tower, and the U-shaped activated carbon adsorber is located above the inclined air permeable plate.

The reactor is connected to a storage tank via a discharge pump, and a sampling port is provided on the storage tank.

The reactor is provided with a gas phase discharge port, a premixing tank coil is provided inside the premixing tank, and the gas phase discharge port is connected with the premixing tank coil through a primary induced draft fan.

The solid-liquid separator is connected to the sampling port through a feed pump to keep the sampling port warm. The liquid phase in the storage tank generally contains insulation facilities, and the sampling port is very likely to be blocked due to temperature reduction.

The premixing tank coil is connected to the solid-liquid separator.

The spray tower is provided with a dispersion plate and a spray plate, wherein the dispersion plate is located below the spray plate, and the solid-liquid separator is connected with the dispersion plate through a spray tower inlet pipeline.

The spray tower is connected with the spray plate through a circulation pump.

The activated carbon adsorption tower is provided with an activated carbon replacement port and an activated carbon outlet, and the activated carbon replacement port is located above the activated carbon outlet.

The connection between the secondary induced draft fan and the activated carbon adsorption tower is located below the inclined air permeable plate, the inclined air permeable plate is provided with air holes, and the activated carbon adsorption tower is connected to an air outlet pipe. The gas phase passes through the activated carbon adsorption tower from bottom to top, and the activated carbon below needs to be replaced first.

The working principle of the utility model is:

After the raw materials react in the reactor, the liquid phase enters the storage tank through the discharge pump, and the gas phase enters the premixing tank coil through the first-level induced draft fan to heat the raw materials in the premixing tank and then enter the solid-liquid separator; after the separation in the solid-liquid separator, the liquid phase enters the sampling port through the feed pump to keep the sampling port warm; the gas phase in the solid-liquid separator enters the spray tower through the dispersion plate, the circulation pump starts working, and the liquid phase in the spray tower enters the spray plate through the circulation pump to spray the gas phase; then the gas phase enters the activated carbon adsorption tower through the second-level induced draft fan to adsorb the gas phase. Among them, the gas phase passes through the activated carbon adsorption tower from bottom to top, and the activated carbon at the bottom needs to be replaced first.

Compared with the prior art, the beneficial effects of the utility model are:

By adopting the chemical production safety tail gas treatment device of the utility model, the tail gas is introduced into the premixing tank through the arrangement of the premixing tank and the solid-liquid separator, and the raw materials in the premixing tank are preheated, which greatly improves the production efficiency. The sampling efficiency is greatly improved by introducing the liquid phase in the solid-liquid separator into the sampling port. The replacement efficiency of the activated carbon in the activated carbon adsorption tower is greatly improved by the arrangement of the inclined air permeable plate, the activated carbon replacement port and the activated carbon outlet, and the tail gas treatment efficiency is improved.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the structure of a chemical production safety tail gas treatment device of the present utility model;

FIG2 is a schematic diagram of the structure of the inclined air-permeable plate of the utility model;

In the figure: 1. Reactor; 2. Premixing tank; 3. Storage tank; 4. Spray tower; 5. Activated carbon adsorption tower; 6. Discharge pump; 7. Gas phase discharge port; 8. Premixing tank coil; 9. Primary induced draft fan; 10. Solid-liquid separator; 11. Feed pump; 12. Sampling port; 13. Spray tower inlet pipe; 14. Dispersion plate; 15. Circulation pump; 16. Spray plate; 17. Secondary induced draft fan; 18. U-shaped activated carbon adsorber; 19. Exhaust pipe; 20. Activated carbon replacement port; 21. Inclined air permeable plate; 22. Activated carbon outlet; 23. Vent.

DETAILED DESCRIPTION

In order to make the purpose and technical solution of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings.

Example 1

As shown in FIG1 , the chemical production safety tail gas treatment device includes a reactor 1, which is connected to a premixing tank 2 through a primary induced draft fan 9, and the premixing tank 2 is connected to a spray tower 4 through a solid-liquid separator 10, and the spray tower 4 is connected to an activated carbon adsorption tower 5 through a secondary induced draft fan 17, and a U-shaped activated carbon adsorber 18 and an inclined air permeable plate 21 are provided inside the activated carbon adsorption tower 5, and the U-shaped activated carbon adsorber 18 is located above the inclined air permeable plate 21. The reactor 1 is connected to a storage tank 3 through a discharge pump 6, and a sampling port 12 is provided on the storage tank 3. A gas phase discharge port 7 is provided on the reactor 1, and a premixing tank coil 8 is provided inside the premixing tank 2, and the gas phase discharge port 7 is connected to the premixing tank coil 8 through a primary induced draft fan 9. The solid-liquid separator 10 is connected to the sampling port 12 through a feed guide pump 11, which is used to keep the sampling port 12 warm. The liquid phase in the storage tank 3 generally contains insulation facilities, and the sampling port 12 is very easy to be blocked due to temperature reduction. The premixing tank coil 8 is connected to the solid-liquid separator 10. A dispersion plate 14 and a spray plate 16 are provided inside the spray tower 4. The dispersion plate 14 is located below the spray plate 16. The solid-liquid separator 10 is connected to the dispersion plate 14 through the spray tower inlet pipe 13. The spray tower 4 is connected to the spray plate 16 through a circulation pump 15. An activated carbon replacement port 20 and an activated carbon outlet 22 are provided on the activated carbon adsorption tower 5. The activated carbon replacement port 20 is located above the activated carbon outlet 22. As shown in FIG. 2, the connection between the secondary induced draft fan 17 and the activated carbon adsorption tower 5 is located below the inclined air permeable plate 21. The inclined air permeable plate 21 is provided with air vents 23. The activated carbon adsorption tower 5 is connected to an air outlet pipe 19.

The above-mentioned chemical production safety tail gas treatment device, when in operation, comprises the following steps:

(1) After the raw materials react in the reactor 1, the liquid phase enters the storage tank 3 through the discharge pump 6, and the gas phase enters the premixing tank coil 8 through the primary induced draft fan 9, and the raw materials in the premixing tank 2 are heated, and then enter the solid-liquid separator 10; (2) After the separation in the solid-liquid separator 10 is completed, the liquid phase enters the sampling port 12 through the feed pump 11, and the sampling port 12 is kept warm; (3) The gas phase in the solid-liquid separator 10 enters the spray tower 4 through the dispersion plate 14, and the circulation pump 15 starts to work. The liquid phase in the spray tower 4 enters the spray plate 16 through the circulation pump 15, and the gas phase is sprayed. After that, the gas phase enters the activated carbon adsorption tower 5 through the secondary induced draft fan 17, and the gas phase is adsorbed.

Claims (9)

1. The utility model provides a chemical industry safety in production tail gas processing apparatus, a serial communication port, including reation kettle (1), reation kettle (1) link to each other with premixing jar (2) through one-level draught fan (9), premixing jar (2) link to each other with spray column (4) through solid-liquid separator (10), spray column (4) link to each other with active carbon adsorption tower (5) through second grade draught fan (17), inside U type active carbon adsorber (18) and the ventilative board of slope (21) of being equipped with of active carbon adsorption tower (5), U type active carbon adsorber (18) are located ventilative board of slope (21) top.

2. The tail gas treatment device for the chemical safety production according to claim 1, wherein the reaction kettle (1) is connected with the storage tank (3) through the discharging pump (6), and the storage tank (3) is provided with a sampling port (12).

3. The chemical safety production tail gas treatment device according to claim 1, wherein the reaction kettle (1) is provided with a gas phase discharge port (7), a premixing tank coil pipe (8) is arranged in the premixing tank (2), and the gas phase discharge port (7) is connected with the premixing tank coil pipe (8) through a primary induced draft fan (9).

4. The tail gas treatment device for the chemical safety production according to claim 2, wherein the solid-liquid separator (10) is connected with the sampling port (12) through a guide pump (11) and is used for preserving heat of the sampling port (12).

5. A chemical safety production tail gas treatment device according to claim 3, wherein the premixing tank coil (8) is connected with a solid-liquid separator (10).

6. The chemical safety production tail gas treatment device according to claim 1, wherein a dispersion disc (14) and a spray disc (16) are arranged in the spray tower (4), the dispersion disc (14) is positioned below the spray disc (16), and the solid-liquid separator (10) is connected with the dispersion disc (14) through a spray tower inlet pipeline (13).

7. The tail gas treatment device for the chemical safety production according to claim 6, wherein the spray tower (4) is connected with a spray disc (16) through a circulating pump (15).

8. The tail gas treatment device for the chemical safety production according to claim 1, wherein the activated carbon adsorption tower (5) is provided with an activated carbon replacement port (20) and an activated carbon outlet (22), and the activated carbon replacement port (20) is positioned above the activated carbon outlet (22).

9. The tail gas treatment device for the chemical safety production according to claim 1, wherein the connection part of the secondary induced draft fan (17) and the activated carbon adsorption tower (5) is positioned below the inclined ventilation plate (21), the inclined ventilation plate (21) is provided with a ventilation hole (23), and the activated carbon adsorption tower (5) is connected with an air outlet pipeline (19).