CN212369912U - Tail gas purification and discharge device of absorption tower - Google Patents

Abstract

The utility model belongs to the technical field of tail gas treatment, especially, be an absorption tower tail gas purifies discharging equipment, including the absorption tower, the top fixed mounting of absorption tower has tail gas exhaust valve, and tail gas exhaust valve's one end fixedly connected with blast pipe, fixed mounting has neutralization box on the blast pipe, and the other end fixedly connected with tail gas injection hole of blast pipe, the one end fixedly connected with acid mist clarifier of tail gas injection hole, and the inside fixed mounting of acid mist clarifier has alkali lye pipe, and alkali lye pipe runs through the lateral wall and the fixedly connected with alkali lye injection hole of acid mist clarifier, the fixed intercommunication of the other end of alkali lye injection hole has the alkali lye conveyer pipe. The utility model is simple in operation, convenient to use can realize the abundant neutralization absorption to acid mist in the tail gas, compensate current acid mist absorption tower and remove the not enough problem of acid, avoid causing the pollution to the environment, very big improvement the feature of environmental protection and the security of production.

Description

Tail gas purification and discharge device of absorption tower

Technical Field

The utility model relates to a tail gas treatment technical field especially relates to an absorption tower tail gas purifies discharging equipment.

Background

An absorption tower is a device that performs an absorption operation. The liquid-gas phase contact state can be divided into three types. The first type is a plate tower, a bubbling absorption tower and a stirring bubbling absorption tower, wherein gas is dispersed in a liquid phase in a bubble form; the second type is an ejector, a venturi, a spray tower in which liquid is dispersed in a gas phase in the form of droplets; the third type is a packed absorption column and a falling film absorption column in which liquid contacts with a gas phase in a film-like motion. The gas-liquid two-phase flow mode in the tower can be countercurrent or cocurrent. Usually, a countercurrent operation is adopted, the absorbent flows from top to bottom in the tower top, and contacts with the gas flowing from bottom to top, the liquid absorbed with the absorbent is discharged from the bottom of the tower, and the purified gas is discharged from the top of the tower.

The absorption tower can produce a large amount of acid mist, in order to avoid acid mist to discharge into the atmospheric environment, all carry out purification treatment to the acid mist that produces, at present, adopt multistage spraying to carry out neutralization absorption to acid mist most often, acid mist is fallen in the very thorough processing of this kind of method, and remain a small amount of acid mist in the tail gas, if adopt the mode of blowing tail gas into acid mist absorption tower once more to handle, not only increase the cost of tail gas treatment, but also reduce the treatment effeciency of acid mist tail gas, influence the normal clear of enterprise's production and processing, for this reason, an absorption tower tail gas purification and emission device is proposed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing an absorption tower tail gas purification and discharge device.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an absorption tower tail gas purification and discharge device comprises an absorption tower, wherein a tail gas exhaust valve is fixedly mounted at the top end of the absorption tower, an exhaust pipe is fixedly connected with one end of the tail gas exhaust valve, a neutralization box is fixedly mounted on the exhaust pipe, a tail gas injection hole is fixedly connected with the other end of the exhaust pipe, an acid mist purifier is fixedly connected with one end of the tail gas injection hole, an alkali liquid pipe is fixedly mounted inside the acid mist purifier, the alkali liquid pipe penetrates through the side wall of the acid mist purifier and is fixedly connected with an alkali liquid injection hole, the other end of the alkali liquid injection hole is fixedly communicated with an alkali liquid conveying pipe, a water pump is fixedly connected with one end of the alkali liquid conveying pipe, an alkali liquid tank is fixedly connected with the other end of the water pump, an alkali liquid return pipe is fixedly connected with the other end of the alkali liquid tank, one end of the drain valve is fixedly connected with a recovery filter box through an alkali liquor return pipe, a secondary treatment box is fixedly mounted at the top end of the acid mist purifier, and a purification exhaust pipe is fixedly connected at the top end of the secondary treatment box.

Preferably, the secondary treatment tank is filled with activated carbon substances convenient to absorb.

Preferably, the surface of the inner side of the acid mist purifier is fixedly provided with adsorption cotton, and the inner wall of the acid mist purifier is fixedly provided with three baffles which are convenient for full reaction.

Preferably, a filter screen is fixedly arranged in the alkaline solution tank.

Preferably, the exhaust pipe is made of stainless steel which is not easy to corrode.

Preferably, a plurality of atomizing nozzles are fixedly arranged on the alkaline liquid pipe, and alkaline substances are placed in the neutralizing box.

Compared with the prior art, the beneficial effects of the utility model are that: contain the tail gas of acid mist after absorption treatment through the absorption tower, open tail gas discharge valve, tail gas passes through the blast pipe and gets into the tail gas filling hole, thereby carry in the acid mist clarifier, be convenient for the emission and the transport of tail gas, start the water pump work, the atomizing shower nozzle blowout of alkali lye pump income alkali lye conveyer pipe and transport to the acid mist clarifier with the alkali lye incasement, spun alkali lye flows to the recovery filter cartridge of acid mist clarifier bottom, then get into the alkali lye back flow, realize the cyclic utilization of alkali lye, and the filter screen has improved the filter effect to alkali lye, impurity in the effective filtering alkali lye, baffle and the more abundant that the absorption cotton made tail gas and alkali lye can react.

The utility model is simple in operation, convenient to use can realize the abundant neutralization absorption to acid mist in the tail gas, compensate current acid mist absorption tower and remove the not enough problem of acid, avoid causing the pollution to the environment, very big improvement the feature of environmental protection and the security of production.

Drawings

Fig. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic view of the top view of the acid mist purifier according to the present invention;

FIG. 3 is a schematic diagram of a side view cross-sectional structure of the acid mist purifier according to the present invention;

in the figure: 1. an absorption tower; 2. a tail gas exhaust valve; 3. an exhaust pipe; 4. a tail gas injection hole; 5. an acid mist purifier; 6. an alkali liquor tube; 7. injecting an alkali liquor into the hole; 8. an alkali liquor conveying pipe; 9. a water pump; 10. an alkaline liquid tank; 11. an alkali liquor return pipe; 12. a check valve; 13. a drain valve; 14. recovering the filter box; 15. a secondary treatment tank; 16. purifying the exhaust pipe; 17. a baffle plate; 18. a filter screen; 19. an atomizing spray head; 20. and (5) neutralizing the box.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: an absorption tower tail gas purification and discharge device comprises an absorption tower 1, a tail gas exhaust valve 2 is fixedly installed at the top end of the absorption tower 1, an exhaust pipe 3 is fixedly connected to one end of the tail gas exhaust valve 2, a neutralization box 20 is fixedly installed on the exhaust pipe 3, a tail gas injection hole 4 is fixedly connected to the other end of the exhaust pipe 3, an acid mist purifier 5 is fixedly connected to one end of the tail gas injection hole 4, an alkali liquid pipe 6 is fixedly installed inside the acid mist purifier 5, the alkali liquid pipe 6 penetrates through the side wall of the acid mist purifier 5 and is fixedly connected with an alkali liquid injection hole 7, an alkali liquid conveying pipe 8 is fixedly communicated with the other end of the alkali liquid injection hole 7, a water pump 9 is fixedly connected to one end of the alkali liquid conveying pipe 8, an alkali liquid tank 10 is fixedly connected to the other end of the water pump 9, an alkali liquid return pipe 11 is fixedly, the check valve 12 is connected with a drain valve 13 through an alkali liquor return pipe 11, one end of the drain valve 13 is fixedly connected with a recovery filter box 14 through the alkali liquor return pipe 11, the top end of the acid mist purifier 5 is fixedly provided with a secondary treatment box 15, and the top end of the secondary treatment box 15 is fixedly connected with a purification exhaust pipe 16;

the active carbon material that has been convenient for to absorb is filled in secondary treatment case 15, and 5 inboard fixed surface of acid mist clarifier install the absorption cotton, and fixed mounting has three baffle 17 of being convenient for fully to react on the 5 inner walls of acid mist clarifier, and the inside fixed mounting of lye tank 10 has filter screen 18, and blast pipe 3 adopts the difficult 304 stainless steel material that is corroded, and fixed mounting has a plurality of atomizer 19 on lye pipe 6, and has placed the alkaline material in the neutralization box 20, the utility model is simple in operation, convenient to use, can realize the abundant neutralization absorption to acid mist in the tail gas, compensate current acid mist absorption tower and remove the not enough problem of acid, avoid causing the pollution to the environment, very big improvement the environmental protection nature and the security of production.

The working principle is as follows: after the tail gas containing acid mist is absorbed and treated by the absorption tower 1, a tail gas exhaust valve 2 is opened, the tail gas enters a tail gas injection hole through an exhaust pipe 3 and is conveyed into an acid mist purifier 5, the tail gas is conveniently discharged and conveyed, a water pump 9 is started to work, the alkali liquor in an alkali liquor box 10 is pumped into an alkali liquor conveying pipe 8 by the water pump 9 and is conveyed to an atomizing nozzle 19 in the acid mist purifier 5 for spraying, the sprayed alkali liquor flows to a recovery filter box 14 at the bottom of the acid mist purifier 5 and then enters an alkali liquor return pipe 11 to realize the recycling of the alkali liquor, the filter screen 18 improves the filtering effect on the alkali liquor, impurities in the alkali liquor are effectively filtered, and the baffle 17 and adsorption cotton enable the tail gas and the alkali liquor to react more fully, the utility model has the advantages of simple operation and convenient use, can realize the full neutralization and absorption of the acid mist in the tail gas, and make up the problem, avoids the pollution to the environment and greatly improves the environmental protection and safety of production.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides an absorption tower tail gas purifies discharging equipment, includes absorption tower (1), its characterized in that: the tail gas exhaust and purification device is characterized in that a tail gas exhaust valve (2) is fixedly mounted at the top end of the absorption tower (1), an exhaust pipe (3) is fixedly connected to one end of the tail gas exhaust valve (2), a neutralization box (20) is fixedly mounted on the exhaust pipe (3), a tail gas injection hole (4) is fixedly connected to the other end of the exhaust pipe (3), an acid mist purifier (5) is fixedly connected to one end of the tail gas injection hole (4), an alkali liquor pipe (6) is fixedly mounted inside the acid mist purifier (5), the alkali liquor pipe (6) penetrates through the side wall of the acid mist purifier (5) and is fixedly connected with an alkali liquor injection hole (7), an alkali liquor conveying pipe (8) is fixedly communicated with the other end of the alkali liquor injection hole (7), a water pump (9) is fixedly connected to one end of the alkali liquor conveying pipe (8), an alkali liquor tank (10) is fixedly connected to the other end of the water, fixed mounting has check valve (12) on alkali lye back flow (11), and check valve (12) are connected with trap (13) through alkali lye back flow (11), filter cartridge (14) are retrieved through alkali lye back flow (11) fixedly connected with to the one end of trap (13), and acid mist clarifier (5) top fixed mounting has secondary treatment case (15), the top fixedly connected with of secondary treatment case (15) purifies blast pipe (16).

2. The tail gas purification and discharge device for the absorption tower as claimed in claim 1, wherein: activated carbon substances convenient to absorb are filled in the secondary treatment box (15).

3. The tail gas purification and discharge device for the absorption tower as claimed in claim 1, wherein: the inner side surface of the acid mist purifier (5) is fixedly provided with adsorption cotton, and the inner wall of the acid mist purifier (5) is fixedly provided with three baffles (17) which are convenient for full reaction.

4. The tail gas purification and discharge device for the absorption tower as claimed in claim 1, wherein: and a filter screen (18) is fixedly arranged in the lye tank (10).

5. The tail gas purification and discharge device for the absorption tower as claimed in claim 1, wherein: the exhaust pipe (3) is made of 304 stainless steel which is not easy to corrode.

6. The tail gas purification and discharge device for the absorption tower as claimed in claim 1, wherein: a plurality of atomizing nozzles (19) are fixedly arranged on the alkaline liquid pipe (6), and alkaline substances are placed in the neutralizing box (20).

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