CN215610472U

CN215610472U - Gaseous zero release equipment of coke-oven plant VOCs

Info

Publication number: CN215610472U
Application number: CN202121980828.XU
Authority: CN
Inventors: 张志宏; 李军; 王洪盛; 毛利伟
Original assignee: Shanxi Zhixin Baoneng Technology Co ltd
Current assignee: Shanxi Zhixin Baoneng Technology Co ltd
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2022-01-25
Anticipated expiration: 2031-08-23

Abstract

The utility model discloses a zero discharge device of VOCs gas in a coking plant, which relates to the technical field of VOCs gas treatment and comprises a bottom plate, wherein the upper surface of the bottom plate is fixedly connected with a desulfurizing tower, an ammonium removing tower, an induced draft fan, a heat storage chamber and a combustion chamber, the left side of the desulfurizing tower is provided with a gas pretreatment mechanism, the surface of the desulfurizing tower and the surface of the ammonium removing tower are jointly and fixedly communicated with a second pipeline, the surface of the ammonium removing tower and the input end of the induced draft fan are jointly and fixedly communicated with a third pipeline, the output end of the induced draft fan is communicated with two coke oven openers through a branch pipe, and the two coke oven openers are fixedly communicated with the surface of the heat storage chamber. Realizing the problem of zero emission.

Description

Gaseous zero release equipment of coke-oven plant VOCs

Technical Field

The utility model relates to the technical field of VOCs gas treatment, in particular to zero-emission equipment for VOCs gas in a coking plant.

Background

VOCs are complex in emission source, various in emission form and various in material variety, and also contain a plurality of carcinogenic substances. Therefore, the treatment of VOCs is an extremely slow and difficult task.

However, the traditional waste gas treatment device cannot firstly pretreat the unorganized discharged VOCs gas in situ and then gather the gas and introduce the gas into the booster fan to enter the coke oven for combustion, so that the polluted gas is completely decomposed, and zero emission can not be realized.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide zero emission equipment for VOCs gas in a coking plant, which has the effects of pre-treating the VOCs gas firstly and then deeply treating the VOCs gas to realize zero emission and solves the problems that the traditional waste gas treatment device cannot pre-treat the unorganized emission VOCs gas firstly and then collect the gas, then introduce the gas into a booster fan to enter a coke oven for combustion, completely decompose polluted gas and realize zero emission.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a gaseous zero release equipment of coke-oven plant VOCs, includes the bottom plate, the last fixed surface of bottom plate is connected with the desulfurizing tower, takes off ammonium tower, draught fan, regenerator and combustion chamber, the left side of desulfurizing tower is provided with gaseous preliminary treatment mechanism, the surface of desulfurizing tower with the common fixed intercommunication in surface of taking off ammonium tower has the second pipeline, take off ammonium tower the surface with the common fixed intercommunication in input of draught fan has the third pipeline, the output of draught fan has two coke oven shutters, two through the bleeder intercommunication coke oven shutters all fixed intercommunication is in the surface of regenerator, the surface of regenerator pass through the fourth pipeline with the combustion chamber is linked together.

Optionally, the gas pretreatment mechanism comprises a waste pretreatment mixing chamber fixedly connected to the upper surface of the bottom plate, the surface of the waste pretreatment mixing chamber is communicated with the surface of the desulfurizing tower through a first pipeline, the upper surface of the bottom plate is fixedly connected with a cold drum pretreatment tank, a tank area and an elution benzene working section tank, and the cold drum pretreatment tank, the tank area and the elution benzene working section tank are communicated with the gas inlet end of the waste pretreatment mixing chamber through a three-way pipe.

Optionally, a flame arrester is mounted on the surface of the lateral pipe.

Optionally, a combustible gas detector is installed on the surface of the branch pipe, and a pressure relief component for relieving pressure when the combustible gas detector detects that the pressure is too high is further included.

Optionally, the pressure relief part includes an emergency cut-off valve installed on the surface of the fourth pipeline, a temporary pressure relief valve is fixedly communicated with the surface of the branch pipe, and an on-off control valve is arranged inside the temporary pressure relief valve.

Optionally, the induced draft fan is a booster fan.

Compared with the prior art, the utility model has the following beneficial effects:

firstly, the content of organic matters such as tar, benzene, naphthalene and the like in the waste gas is high, and the pipeline for the circulation of the waste gas is easy to block, so that the waste gas collected in a cold drum pretreatment tank, a benzene elution working section tank and a tank area is pretreated to remove the organic matters such as tar, benzene, naphthalene and the like in the tail gas, the blockage of the waste gas collection pipeline is avoided, and the content of harmful components in the waste gas is reduced.

Secondly, the utility model collects the pretreated waste gas through a waste pretreatment mixing chamber, flows into a desulfurizing tower, carries out desulfurization treatment on the waste gas by utilizing the water film desulfurization and dust removal principle of the desulfurizing tower, flows into a deammoniation tower, further removes part of macromolecular impurities such as naphthalene, tar and the like in the waste gas, then the waste gas passes through the action of an induced draft fan, when a coke oven shutter is in an air rising stage, the VOCs waste gas enters a coke oven shutter and is uniformly mixed with air and then enters a heat storage chamber, finally enters a combustion chamber at the temperature to participate in the combustion of coke oven gas, and is discharged through a coke oven chimney at the top of the combustion chamber. When the coke oven shutter is in a waste gas descending stage, the waste gas supply is stopped, and when the coke oven switch is reversed, VOCs waste gas is uniformly mixed with ascending air all the time and then enters the coke oven to participate in the combustion of coke oven gas, so that the treatment of the VOCs in the waste gas is realized.

Drawings

FIG. 1 is an isometric view of a structure of the present invention;

FIG. 2 is a front view of the structure of the present invention;

fig. 3 is a front view of the draft fan structure of the present invention.

In the figure: 1. a base plate; 2. a cold drum pretreatment tank; 3. a tank area; 4. a benzene elution section tank; 5. a three-way pipe; 6. a waste pretreatment mixing chamber; 7. a desulfurizing tower; 8. a deammoniation tower; 9. an induced draft fan; 10. a branch pipe; 11. a coke oven shutter; 12. a regenerator; 13. a combustion chamber; 14. a first conduit; 15. a second conduit; 16. a third pipeline; 17. a fourth conduit; 18. a combustible gas detector; 19. an emergency shut-off valve; 20. a temporary pressure relief valve; 21. a flame arrester.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a technical solution: a zero emission device for VOCs gas in a coking plant comprises a bottom plate 1, wherein a desulfurizing tower 7, an ammonium removing tower 8, an induced draft fan 9, a regenerative chamber 12 and a combustion chamber 13 are fixedly connected to the upper surface of the bottom plate 1, a gas pretreatment mechanism is arranged on the left side of the desulfurizing tower 7, a second pipeline 15 is fixedly communicated with the surface of the desulfurizing tower 7 and the surface of the ammonium removing tower 8 together, a third pipeline 16 is fixedly communicated with the surface of the ammonium removing tower 8 and the input end of the induced draft fan 9 together, the output end of the induced draft fan 9 is communicated with two coke oven openers 11 through a branch pipe 10, the two coke oven openers 11 are fixedly communicated with the surface of the regenerative chamber 12, the surface of the regenerative chamber 12 is communicated with the combustion chamber 13 through a fourth pipeline 17, waste gas pretreated by the gas pretreatment mechanism is collected by a waste pretreatment mixing chamber 6 and flows into the desulfurizing tower 7 through a first pipeline 14, and the desulfurizing tower 7 carries out desulfurization treatment on the waste gas by utilizing the desulfurization and dust removal principle, then the waste gas flows into a deammoniation tower 8 through a second pipeline 15 to further remove part of high molecular impurities such as naphthalene, tar and the like in the waste gas, then the waste gas is introduced from a third pipeline 16 under the action of a draught fan, when the coke oven shutter 11 is in an air rising stage, VOCs waste gas enters the coke oven shutter 11 and is uniformly mixed with air and then enters a regenerative chamber 12, and finally enters a 1300 ℃ combustion chamber 13 to participate in the combustion of coke oven gas and is discharged through a coke oven chimney at the top of the regenerative chamber. When the coke oven shutter 11 is in a waste gas descending stage, the waste gas supply is stopped, and when the coke oven exchanger is reversed, VOCs waste gas is uniformly mixed with ascending air all the time and then enters the coke oven to participate in the combustion of coke oven gas, so that the treatment of the VOCs in the waste gas is realized.

In order to respectively construct a set of VOCs pretreatment device in the chemical production drum cooling, tank area and debenzolization area, further, the gas pretreatment mechanism comprises a waste pretreatment mixing chamber 6 fixedly connected to the upper surface of the bottom plate 1, the surface of the waste pretreatment mixing chamber 6 is communicated with the surface of the desulfurizing tower 7 through a first pipeline 14, the upper surface of the bottom plate 1 is fixedly connected with a cold drum pretreatment tank 2, a tank area 3 and a benzene elution working section tank 4, the cold drum pretreatment tank 2, the tank area 3 and the benzene elution working section tank 4 are communicated with the gas inlet end of the waste pretreatment mixing chamber 6 through a three-way pipe 5, because the content of organic matters such as tar, benzene and naphthalene in the waste gas is high, the pipeline blockage of waste gas circulation is easily caused, so the waste gas collected by the cold drum pretreatment tank 2, the benzene elution working section tank 4 and the tank area 3 is pretreated to remove the organic matters such as tar, benzene and naphthalene in the tail gas, and the like, so as to avoid the blockage of a waste gas collection pipeline, and simultaneously reduces the content of harmful components in the waste gas.

In order to prevent external flame from entering the equipment containing flammable and explosive gases, a flame arrester 21 is further installed on the surface of the branch pipe 10, and flame can be prevented from spreading between the equipment and the pipeline through the flame arrester 21.

In order to detect the content of the combustible gas in real time, further, the surface of the branch pipe 10 is provided with a combustible gas detector 18, and the branch pipe further comprises a pressure relief component for relieving pressure when the combustible gas detector 18 detects that the pressure is too high, and the pressure relief component can be used for preventing explosion under the action of the pressure relief component when the pressure of the gas is detected to be too high through the detection of the combustible gas detector 18.

In order to timely release the pressure when the combustible gas detector 18 detects that the gas pressure is too high, the pressure release part comprises an emergency cut-off valve 19 installed on the surface of the fourth pipeline 17, a temporary pressure release valve 20 is fixedly communicated with the surface of the branch pipe 10, an on-off control valve is arranged inside the temporary pressure release valve 20, the emergency cut-off valve 19 is closed when the combustible gas exceeds an alarm value, gas supply to the coke oven is stopped, and meanwhile, the temporary pressure release valve 20 is opened to temporarily discharge the combustible gas for pressure release.

In order to overcome the pressure loss in the desulfurization system, the induced draft fan 9 is a booster fan.

The working principle is as follows: when the zero-emission equipment for VOCs gas in a coke-oven plant is used, because the content of organic matters such as tar, benzene and naphthalene in the waste gas is high, the pipeline for waste gas circulation is easily blocked, the waste gas collected by the cold drum pretreatment tank 2, the benzene elution working section tank 4 and the tank area 3 is pretreated to remove the organic matters such as tar, benzene and naphthalene in the tail gas, so that the blockage of the waste gas collecting pipeline is avoided, and the content of harmful ingredients in the waste gas is reduced;

then the pretreated waste gas is collected through a waste pretreatment mixing chamber 6, flows into a desulfurizing tower 7 through a first pipeline 14, the desulfurizing tower 7 carries out desulfurization treatment on the waste gas by utilizing the water film desulfurization and dust removal principle of the desulfurizing tower, then flows into a deammoniation tower 8 through a second pipeline 15, further removes part of high molecular impurities such as naphthalene, tar and the like in the waste gas, then the waste gas is introduced through a third pipeline 16 under the action of an induced draft fan, when a coke oven shutter 11 is in an air rising stage, the VOCs waste gas enters the coke oven shutter 11 and is uniformly mixed with air to enter a heat storage chamber 12, finally enters a 1300 ℃ combustion chamber 13 to participate in the combustion of the coke oven gas, and is discharged through a coke oven chimney at the top of the heat storage chamber. When the coke oven shutter 11 is in a waste gas descending stage, the waste gas supply is stopped, and when the coke oven exchanger is reversed, VOCs waste gas is uniformly mixed with ascending air all the time and then enters the coke oven to participate in the combustion of coke oven gas, so that the treatment of the VOCs in the waste gas is realized.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a gaseous zero release equipment of coke-oven plant VOCs, includes bottom plate (1), its characterized in that: the last fixed surface of bottom plate (1) is connected with desulfurizing tower (7), deammoniation tower (8), draught fan (9), regenerator (12) and combustion chamber (13), the left side of desulfurizing tower (7) is provided with gas pretreatment mechanism, the surface of desulfurizing tower (7) with the common fixed intercommunication in surface of deammoniation tower (8) has second pipeline (15), the surface of deammoniation tower (8) with the common fixed intercommunication in input of draught fan (9) has third pipeline (16), the output of draught fan (9) has two coke oven shutter (11), two through bleeder (10) intercommunication coke oven shutter (11) all fixed intercommunication is in the surface of regenerator (12), the surface of regenerator (12) pass through fourth pipeline (17) with combustion chamber (13) are linked together.

2. The coke-oven plant zero emission of VOCs gas apparatus of claim 1, wherein: the gas pretreatment mechanism comprises a waste pretreatment mixing chamber (6) fixedly connected to the upper surface of a base plate (1), the surface of the waste pretreatment mixing chamber (6) is communicated with the surface of a desulfurizing tower (7) through a first pipeline (14), the upper surface of the base plate (1) is fixedly connected with a cold drum pretreatment tank (2), a tank area (3) and an elution benzene working section tank (4), and the cold drum pretreatment tank (2), the tank area (3) and the elution benzene working section tank (4) are communicated with the gas inlet end of the waste pretreatment mixing chamber (6) through a three-way pipe (5).

3. The coke-oven plant zero emission of VOCs gas apparatus of claim 2, wherein: the surface of the branch pipe (10) is provided with a flame arrester (21).

4. The zero-emission equipment for VOCs gases in a coke-oven plant according to claim 3, characterized in that: the surface of the branch pipe (10) is provided with a combustible gas detector (18), and the branch pipe further comprises a pressure relief part for relieving pressure when the combustible gas detector (18) detects that the pressure is too high.

5. The zero-emission equipment for VOCs gases in a coke-oven plant according to claim 4, characterized in that: the pressure relief part comprises an emergency cut-off valve (19) arranged on the surface of the fourth pipeline (17), the surface of the branch pipe (10) is fixedly communicated with a temporary pressure relief valve (20), and an on-off control valve is arranged inside the temporary pressure relief valve (20).

6. The coke plant zero gas release apparatus of any of claims 2, 3 or 4, characterized in that: and the induced draft fan (9) is a booster fan.