CN218459078U

CN218459078U - Chemical device adopting multistage absorption of corrosive gas

Info

Publication number: CN218459078U
Application number: CN202122727948.5U
Authority: CN
Inventors: 赵颖
Original assignee: Hubei Tengchen Building Materials Technology Co ltd
Current assignee: Hubei Tengchen Building Materials Technology Co ltd
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2023-02-10
Anticipated expiration: 2031-11-09

Abstract

The utility model discloses an adopt multistage chemical industry device that absorbs corrosive gas of chemical production equipment safety ring protects technical field, including intake pipe and a plurality of group communicating pipe, the bottom intercommunication of intake pipe has the corrosive gas buffer tank, the inner chamber of communicating pipe intercommunication defogging jar is passed through on the top of corrosive gas buffer tank, and the defogging jar passes through communicating pipe intercommunication one-level absorption tower, the gas outlet of one-level absorption tower passes through communicating pipe intercommunication second grade absorption tower, the gas outlet of second grade absorption tower passes through communicating pipe intercommunication corrosive liquid buffer tank, the export of corrosive liquid buffer tank passes through the tertiary absorption tower of communicating pipe intercommunication, one side of tertiary absorption tower is equipped with the fan, and the fan leads to pipe intercommunication tertiary absorption tower, the utility model discloses but multiple absorption processing corrosive gas has improved the absorption efficiency to corrosive gas, and the buffer tank plays the cushioning effect to corrosive gas, avoids gaseous direct entering absorption tower to cause the insufficient gas of absorption to overflow.

Description

Chemical device adopting multistage absorption of corrosive gas

Technical Field

The utility model relates to a chemical production equipment safety ring protects technical field, specifically is an adopt multistage corrosive gas's of absorption chemical industry device.

Background

Chemical waste gas refers to toxic and harmful gas discharged from chemical plants in chemical production. Chemical waste gas often contains many kinds of pollutants, has complex physical and chemical properties and different toxicity, seriously pollutes the environment and influences human health. The chemical waste gas components generated in different chemical production industries are very different. For example, the waste gas generated in the chlor-alkali industry mainly contains chlorine, hydrogen chloride, vinyl chloride, mercury, acetylene and the like, and the waste gas generated in the nitrogenous fertilizer industry mainly contains nitrogen oxides, urea dust, carbon monoxide, ammonia gas, sulfur dioxide, methane and the like. Meanwhile, during the chemical synthesis reaction, different byproducts, such as corrosive gases, are generated due to different reaction properties, and the corrosive gases react with the raw materials after being stored in the kettle for a long time, so that the yield of the required product is low or the purity of the required product is not high enough. If the waste gas is not directly discharged to the atmosphere, the ecological environment can be seriously damaged, and the human health is seriously influenced, so that the method is contrary to the green water Qingshan which is recently proposed in China, namely the Jinshan Yinshan mountain.

At present, the national requirements on the ecological environment are more and more strict, residents pay more and more attention to the living environment of the residents, and various chemical enterprises have great time to the treatment of the tail gas or the corrosive gas in the chemical production. Because the existing chemical enterprises basically adopt a single-stage absorption mode in the aspect of corrosive gas absorption and are not provided with corresponding auxiliary equipment, when a large amount of corrosive gas is generated in the reaction, the single-stage absorption cannot be completely absorbed to cause the overflow of the corrosive gas, so that the environment is easily polluted, and therefore, a chemical device adopting multi-stage absorption of the corrosive gas is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an adopt multistage absorption corrosive gas's chemical plant to current tail gas treatment who provides in solving above-mentioned background art causes corrosive gas excessive and the problem of polluted environment easily.

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

the utility model provides an adopt multistage gaseous chemical industry device of corrosive nature of absorption, includes intake pipe and a plurality of group communicating pipe, the bottom intercommunication of intake pipe has the corrosive gas buffer tank, the inner chamber of communicating pipe intercommunication defogging jar is passed through on the top of corrosive gas buffer tank, and the defogging jar passes through communicating pipe intercommunication one-level absorption tower, the gas outlet of one-level absorption tower passes through communicating pipe intercommunication second grade absorption tower, the gas outlet of second grade absorption tower passes through communicating pipe intercommunication corrosive liquid buffer tank, the export of corrosive liquid buffer tank passes through the tertiary absorption tower of communicating pipe intercommunication, one side of tertiary absorption tower is equipped with the fan, and the fan leads to pipe intercommunication tertiary absorption tower.

Further: the bottom ends of the first-stage absorption tower and the second-stage absorption tower are respectively communicated with a first-stage absorption tank and a second-stage absorption tank through flow dividing pipes.

And further: the first-stage absorption tank and the second-stage absorption tank are communicated with a pump body through pipelines, the pump body is communicated with the first-stage absorption tower and the second-stage absorption tower through connecting pipes, and one side of the pump body is communicated with a corrosive liquid storage tank.

Further: the first-stage absorption tank is communicated with the second-stage absorption tank through a pipe body.

Further: and spraying devices are arranged in the first-stage absorption tower and the second-stage absorption tower.

Further: the inner cavity middle position of defogging jar is equipped with the sieve, the inner cavity top position of defogging jar is installed the corrosion protection and is packed.

Further: the outer walls of the corrosive gas buffer tank, the demisting tank, the first-stage absorption tank, the second-stage absorption tank, the first-stage absorption tower, the second-stage absorption tower and the third-stage absorption tower are coated with anticorrosive coatings.

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

the utility model improves the absorption efficiency of corrosive gas through multiple absorption treatment of the first-stage absorption tower, the second-stage absorption tower and the third-stage absorption tower, and has good practicability; the buffer tank has a buffer function on corrosive gas, and the overflow of insufficient absorption gas caused by the direct entry of the gas into the absorption tower is avoided; the sun-drying plate and the anti-corrosion filler in the demisting tank can effectively block particulate matters carried by corrosive gas so as to avoid blocking a pipeline in the absorption tower; the corrosive liquid buffer tank can isolate a small amount of corrosive steam which may be brought by the corrosive gas when passing.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is the schematic diagram of the internal structure of the defogging tank of the present invention.

In the figure: 1. an air inlet pipe; 2. a corrosive gas buffer tank; 3. a demisting tank; 4. a corrosive liquid storage tank; 5. a pump body; 6. a primary absorption tank; 7. a pipe body; 8. a secondary absorption tank; 9. a corrosive liquid buffer tank; 10. a fan; 11. a communicating pipe; 12. a connecting pipe; 13. a first-stage absorption tower; 14. a secondary absorption tower; 15. a third stage absorption tower; 16. a water pipe; 17. an anti-corrosive filler; 18. and (4) a sieve plate.

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.

Example 1:

referring to fig. 1, the present invention provides a technical solution: a chemical device adopting multi-stage absorption of corrosive gas comprises an air inlet pipe 1 and a plurality of groups of communicating pipes 11, the bottom end of the air inlet pipe 1 is communicated with a corrosive gas buffer tank 2, the top end of the corrosive gas buffer tank 2 is communicated with the inner cavity of a demisting tank 3 through the communicating pipes 11, the demisting tank 3 is communicated with a first-stage absorption tower 13 through the communicating pipes 11, the air outlet of the first-stage absorption tower 13 is communicated with a second-stage absorption tower 14 through the communicating pipes 11, the air outlet of the second-stage absorption tower 14 is communicated with a corrosive liquid buffer tank 9 through the communicating pipes 11, the outlet of the corrosive liquid buffer tank 9 is communicated with a third-stage absorption tower 15 through the communicating pipes 11, one side of the third-stage absorption tower 15 is provided with a fan 10, the fan 10 is communicated with the third-stage absorption tower 15 through a water pipe 16, the communicating pipes 11 are pipelines for connecting various treatment tanks, when in use, the fan 10 and other electric equipment of the device are communicated with an external power supply, the air inlet pipe 1 is communicated with a corrosive gas outlet pipe, by opening the first-stage absorption tower pump, the second-stage absorption tower pump, the third-stage absorption tower pump and the fan 10, the fan 10 connected with the third-stage absorption tower 15 is driven to make the whole absorption system present a micro negative pressure state relative to the outside, which is beneficial to pumping corrosive gas in a normal pressure system to the absorption system, the corrosive gas firstly enters the top through the lower part of the side surface of the corrosive gas buffer tank 2 and flows out, the buffer tank plays a buffer role in buffering the corrosive gas at the position, the gas is prevented from directly entering the absorption tower to cause the overflow of the insufficiently absorbed gas, then the gas enters the top through the lower part of the side surface of the defogging tank 3 and flows out, the defogging tank 3 can effectively block particulate matters carried by the corrosive gas, the gas sequentially passes through the first-stage absorption tower 13 and the second-stage absorption tower 14, and finally the residual small amount of gas flows out from the side surface of the bottom of the second-stage absorption tower 14 and then enters from the top of the corrosive liquid buffer tank 9, corrosive liquid buffer tank 9 is used for isolating a small amount of corrosive vapor that corrosive gas can have when passing through, and a small amount of gas flows out through corrosive liquid buffer tank 9 side bottom at last and flows in through tertiary absorption tower 15 middle part, is absorbed by tertiary absorption tower spray set.

Referring to fig. 1, preferably, the bottom ends of the primary absorption tower 13 and the secondary absorption tower 14 are respectively communicated with the primary absorption tank 6 and the secondary absorption tank 8 through a shunt tube, after the gas enters the top of the primary absorption tower 13, water contained in the primary absorption tank 6 passes through the pump body 5 and a spray device on the side surface of the top of the absorption tower to perform the first step of absorbing corrosive gas, and the absorbed corrosive liquid flows into the primary absorption tank 6 through a tube in the absorption tower. (if the gas is released after absorption, the shell of the primary absorption tower can be cooled by circulating water), the residual corrosive gas flows out from the side surface of the bottom of the primary absorption tower 13 and flows into the top of the secondary absorption tower 14, and the working principle of the secondary absorption tower 14 is the same as that of the primary absorption tower 15.

Referring to fig. 1, preferably, the first-stage absorption tank 6 and the second-stage absorption tank 8 are connected to the pump body 5 through a pipeline, the pump body 5 is connected to the first-stage absorption tower 13 and the second-stage absorption tower 14 through a connecting pipe 12, and one side of the pump body 5 is connected to the corrosive liquid storage tank 4.

Referring to fig. 1, preferably, the primary absorption tank 6 is communicated with the secondary absorption tank 8 through a pipe body 7.

Referring to fig. 1, it is preferable that a spray device is provided in the first-stage absorption tower 13 and the second-stage absorption tower 14.

Referring to fig. 1 and 2, preferably, a sieve plate 18 is disposed in the middle of the inner cavity of the defogging tank 3, an anti-corrosive filler 17 is disposed above the inner cavity of the defogging tank 3, the sieve plate 18 is made of porous polypropylene, and the defogging tank 3 can effectively block particulate matters carried by corrosive gas to prevent the blockage of the tubes in the absorption tower.

Example 2:

referring to fig. 1, this embodiment is different from the first embodiment in that: the outer walls of the corrosive gas buffer tank 2, the demisting tank 3, the first-level absorption tank 6, the second-level absorption tank 8, the first-level absorption tower 13, the second-level absorption tower 14 and the third-level absorption tower 15 are coated with an anticorrosive coating, the anticorrosive coating plays a role in corrosion prevention, and the service life of the tank body and the tower body is prolonged.

The working principle is as follows: in use the utility model discloses at first, with fan 10 and other consumer intercommunication external power source of this device, then, 1 intercommunication corrosive gas outlet duct in intake pipe, through opening the one-level absorption tank pump, the second grade absorption tank pump, tertiary absorption tower pump and fan 10, fan 10 that tertiary absorption tower 15 is connected drives, make whole absorption system present the state of a little negative pressure for the external world, be favorable to corrosive gas in the atmospheric system to take out to absorption system like this, corrosive gas at first gets into the top through 2 side lower parts of corrosive gas buffer tank and flows out, the buffer tank plays the cushioning effect to corrosive gas here, avoid gaseous direct entering absorption tower to cause the insufficient gas of absorption to overflow, later gaseous 3 side lower parts of defogging tank get into the top and flow out, defogging tank 3 can effectively block the particulate matter that corrosive gas has, gaseous entering one-level absorption tower 13 top is back, the built-in water of one-level absorption tank 6 can be through the absorption tower top side spray set of pump body 5, carry out first step absorption corrosive gas, corrosive liquid body after the absorption flows in the one-level absorption tower tubulation flows in the one-level absorption tower. (if gaseous absorption back is exothermic, then can lead to the circulating water to one-level absorption tower 13 shell and cool down it) remaining corrosive gas can flow in from second grade absorption tower 14 top through one-level absorption tower 13 bottom side, last remaining a small amount of gas gets into from corrosive liquid buffer tank 9 top after 14 bottom sides of second grade absorption tower flow out, corrosive liquid buffer tank 9 is a small amount of corrosive steam that can have when being used for completely cutting off corrosive gas process, last a small amount of gas flows in through tertiary absorption tower 15 middle part through corrosive liquid buffer tank 9 side bottom outflow, absorbed by tertiary absorption tower 15 spray set. When the liquid in the first-stage absorption tank 6 is saturated, a valve leading to the corrosive liquid storage tank 4 is opened, and the saturated corrosive liquid is transferred to a special storage tank for sale. After the material is transferred, the valve leading to the corrosive liquid storage tank is closed, the valve leading to the primary absorption tank 6 from the secondary absorption tank 8 is opened, the unabsorbed saturated liquid in the secondary absorption tank 8 is transferred into the primary absorption tank 6, the valve leading to the primary absorption tank 6 is closed after the material is transferred, and water is added into the secondary absorption tank 8.

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

1. The utility model provides an adopt multistage absorption corrosive gas's chemical industry device, includes intake pipe (1) and a plurality of group communicating pipe (11), its characterized in that: the bottom intercommunication of intake pipe (1) has corrosive gas buffer tank (2), the top of corrosive gas buffer tank (2) is through the inner chamber of communicating pipe (11) intercommunication defogging jar (3), and defogging jar (3) are through communicating pipe (11) intercommunication one-level absorption tower (13), the gas outlet of one-level absorption tower (13) is through communicating pipe (11) intercommunication second grade absorption tower (14), the gas outlet of second grade absorption tower (14) is through communicating pipe (11) intercommunication corrosive liquid buffer tank (9), the export of corrosive liquid buffer tank (9) is through communicating pipe (11) intercommunication tertiary absorption tower (15), one side of tertiary absorption tower (15) is equipped with fan (10), and fan (10) lead to pipe (16) intercommunication tertiary absorption tower (15).

2. The chemical plant according to claim 1, wherein the chemical plant comprises a plurality of stages for absorbing corrosive gases, and the chemical plant comprises: the bottom ends of the first-stage absorption tower (13) and the second-stage absorption tower (14) are respectively communicated with a first-stage absorption tank (6) and a second-stage absorption tank (8) through shunt tubes.

3. The chemical plant according to claim 2, wherein the chemical plant comprises a plurality of stages for absorbing corrosive gases, and the chemical plant comprises: the one-level absorption tank (6) and the second-level absorption tank (8) are communicated with a pump body (5) through a pipeline, the pump body (5) is communicated with a one-level absorption tower (13) and a second-level absorption tower (14) through a connecting pipe (12), and one side of the pump body (5) is communicated with a corrosive liquid storage tank (4).

4. The chemical plant using multi-stage absorption of corrosive gases according to claim 2, wherein: the primary absorption tank (6) is communicated with the secondary absorption tank (8) through a pipe body (7).

5. The chemical plant using multi-stage absorption of corrosive gases according to claim 1, wherein: and spraying devices are arranged in the primary absorption tower (13) and the secondary absorption tower (14).

6. The chemical plant according to claim 1, wherein the chemical plant comprises a plurality of stages for absorbing corrosive gases, and the chemical plant comprises: the inner cavity intermediate position of defogging jar (3) is equipped with sieve (18), the inner cavity top position of defogging jar (3) is installed corrosion protection nature and is packed (17).

7. The chemical plant according to claim 1, wherein the chemical plant comprises a plurality of stages for absorbing corrosive gases, and the chemical plant comprises: the outer walls of the corrosive gas buffer tank (2), the demisting tank (3), the first-stage absorption tank (6), the second-stage absorption tank (8), the first-stage absorption tower (13), the second-stage absorption tower (14) and the third-stage absorption tower (15) are coated with anticorrosive coatings.