CN211688942U - Coke oven tail gas dehydration device - Google Patents
Coke oven tail gas dehydration device Download PDFInfo
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- CN211688942U CN211688942U CN201922385683.8U CN201922385683U CN211688942U CN 211688942 U CN211688942 U CN 211688942U CN 201922385683 U CN201922385683 U CN 201922385683U CN 211688942 U CN211688942 U CN 211688942U
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- tail gas
- coke oven
- dehumidifier
- heat exchanger
- oven tail
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Abstract
The utility model provides a coke oven tail gas dehydration treatment device, the utility model firstly exchanges heat with the coke oven tail gas through a heat exchanger B before the coke oven tail gas is applied, then the coke oven tail gas enters a spray tower A and a spray tower B in sequence to be cooled through spraying spray liquid, and finally the coke oven tail gas enters a fuel gas pipe network after entering a rotary disc dehumidifier A and a rotary disc dehumidifier B in sequence to be dehumidified, thereby effectively controlling the temperature and the moisture content of the coke oven tail gas and effectively reducing the potential safety hazard when the coke oven tail gas is applied; the utility model discloses play heat exchange's effect through the heat exchanger B of sharing in dehydration process and moisture content desorption process, simultaneously, realize heat exchange through heat exchanger A between the fresh air that introduces in the moisture content desorption process and the exhaust air to at whole in-process, need not to introduce new heat source again and realize the moisture content desorption to carousel dehumidifier A and carousel dehumidifier B, thereby realized the make full use of heat energy in the coke oven tail gas.
Description
Technical Field
The utility model belongs to the technical field of coke oven tail gas treatment facility, concretely relates to coke oven tail gas dehydration device.
Background
Because the coke oven tail gas has high temperature, contains harmful gases such as sulfur dioxide and the like and contains various gases which can be recycled, the coke oven tail gas is directly discharged, so that the environment is polluted and the energy is wasted, therefore, in order to solve the technical problems, the coke oven tail gas is generally used for heat exchange and is introduced into a roasting furnace for steam production and power generation, and a part of technical personnel also process the coke oven tail gas into natural gas for fully utilizing the resources in the coke oven tail gas, but the temperature of the coke oven tail gas during discharge is as high as 180-200 ℃, so that the risk of ring-type moving operation is great, and the potential safety hazard exists; meanwhile, the moisture content of the coke oven tail gas reaches more than 35%, a large amount of accumulated water at the tail end of a pipeline can be generated in the circulating mobile operation of the roasting furnace, the pipeline is blocked, the heat value is reduced, the service life of the roasting furnace is influenced, and the like, so that the dehydration, cooling and other treatment of the coke oven tail gas before the application of the coke oven tail gas are necessary to reduce the potential safety hazard.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a coke oven tail gas dehydration device, coke oven tail gas dewaters, processes such as cooling before coke oven tail gas uses, potential safety hazard when can effectual reduction coke oven tail gas uses.
In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a coke oven tail gas dehydration device, includes spray column A, spray column B, carousel dehumidifier A, carousel dehumidifier B and heat exchanger B, and coke oven tail gas is linked together its characterized in that with fuel gas pipe network behind this dehydration device: the coke oven tail gas is connected with a heat exchanger B, a spray tower A and a spray tower B in sequence through pipelines and then is divided into two branches, wherein one branch is connected to a fuel gas pipe network through a pipeline after passing through a rotary disk dehumidifier A, a valve A1 is arranged on the branch, the other branch is connected to the fuel gas pipe network through a pipeline after passing through a rotary disk dehumidifier B, and a valve B1 is arranged on the branch;
the water inlets of the spray tower A and the spray tower B are communicated with a make-up water source through a circulating pump, the water outlets of the spray tower A and the spray tower B are jointly connected to the inlet of a water cooling tower, and the outlet of the water cooling tower is sequentially connected with a water treatment device and the circulating pump through pipelines.
Furthermore, the dehydration device also comprises a heat exchanger A and a fan used for introducing fresh air into the heat exchanger A, the fan is divided into two branches after being sequentially connected with the heat exchanger A and the heat exchanger B through pipelines, one branch is provided with a valve A2 and is connected to the rotary disc dehumidifier A after passing through the heat exchanger B, the other branch is provided with a valve B2 and is connected to the rotary disc dehumidifier B after passing through the heat exchanger B, and the rotary disc dehumidifier A and the rotary disc dehumidifier B are connected to the heat exchanger A together and then are connected with the tail gas treatment device.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses carry out the heat transfer with coke oven tail gas at first through heat exchanger B before coke oven tail gas uses, then get into spray column A and spray column B in proper order and cool down through spraying the spray liquid, get into carousel dehumidifier A and carousel dehumidifier B in proper order at last and dehumidify the back and get into the fuel gas pipe network, thereby carried out effectual control to coke oven tail gas's temperature and moisture content, potential safety hazard when can effectually reduce coke oven tail gas and use;
2. the utility model discloses a coke oven tail gas's dehydration and moisture content desorption process, wherein, the effect of cooling is played to dehydration in-process heat exchanger B, and moisture content desorption in-process heat exchanger A and heat exchanger B play the effect to the fresh air intensification that introduces through the fan, the utility model discloses play heat exchange's effect through shared heat exchanger B in dehydration and moisture content desorption in-process, simultaneously, realize heat exchange through heat exchanger A between the fresh air that introduces among the moisture content desorption process and the exhaust air, thereby at whole in-process, need not to introduce new heat source again and realize the moisture content desorption to carousel dehumidifier A and carousel dehumidifier B, thereby realized the make full use of heat energy in the coke oven tail gas, and need not to provide heat source alone again, practiced thrift the energy.
Drawings
FIG. 1 is a schematic block diagram of a dehydration treatment device for coke oven exhaust gas.
Detailed Description
In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the following will combine the drawings in the present invention to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, rather than all embodiments, based on the embodiments in the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention.
A coke oven tail gas dehydration treatment device is shown in figure 1 and comprises a spray tower A, a spray tower B, a rotary disk dehumidifier A, a rotary disk dehumidifier B and a heat exchanger B, wherein coke oven tail gas is communicated with a fuel gas pipe network after passing through the dehydration treatment device, the coke oven tail gas is sequentially connected with the heat exchanger B, the spray tower A and the spray tower B through pipelines and then divided into two branches, one branch is connected to the fuel gas pipe network through the pipeline after passing through the rotary disk dehumidifier A, a valve A1 is arranged on the branch, the other branch is connected to the fuel gas pipe network through the pipeline after passing through the rotary disk dehumidifier B, and a valve B1 is arranged on the branch; the utility model discloses at first carry out the heat transfer with coke oven tail gas through heat exchanger B before coke oven tail gas is used, then in getting into spray column A and spray column B in proper order and spray the liquid through spraying and cool down, get into the fuel gas pipe network after dehumidification in carousel dehumidifier A and the carousel dehumidifier B at last in proper order to the temperature and the moisture content of coke oven tail gas have carried out effectual control, potential safety hazard when can effectual reduction coke oven tail gas application.
The water inlets of the spray tower A and the spray tower B are communicated with a make-up water source through a circulating pump, the water outlets of the spray tower A and the spray tower B are jointly connected to the inlet of a water cooling tower, the outlet of the water cooling tower is sequentially connected with a water treatment device and the circulating pump through a pipeline, and partial tap water is supplemented into the spray tower A and the spray tower B through the make-up water source to make up for the lost water amount.
In order to realize the full utilization of heat energy in the tail gas of the coke oven, the dehydration treatment device further comprises a heat exchanger A and a fan for introducing fresh air into the heat exchanger A, the fan is sequentially connected with the heat exchanger A and the heat exchanger B through pipelines and then is divided into two branches, one branch is provided with a valve A2 and is connected to a rotary disc dehumidifier A after passing through the heat exchanger B, the other branch is provided with a valve B2 and is connected to a rotary disc dehumidifier B after passing through the heat exchanger B, and the rotary disc dehumidifier A and the rotary disc dehumidifier B are connected to the heat exchanger A and then are connected with the tail gas treatment device.
The utility model discloses a coke oven tail gas's dehydration and moisture content desorption process, wherein, the effect of cooling is played to dehydration in-process heat exchanger B, and moisture content desorption in-process heat exchanger A and heat exchanger B play the effect to the fresh air intensification that introduces through the fan, the utility model discloses play heat exchange's effect through shared heat exchanger B in dehydration and moisture content desorption in-process, simultaneously, realize heat exchange through heat exchanger A between the fresh air that introduces among the moisture content desorption process and the exhaust air, thereby at whole in-process, need not to introduce new heat source again and realize the moisture content desorption to carousel dehumidifier A and carousel dehumidifier B, thereby realized the make full use of heat energy in the coke oven tail gas, and need not to provide heat source alone again, practiced thrift the energy.
A treatment method of a coke oven tail gas dehydration treatment device, which comprises a dehydration method and a moisture desorption method,
the dehydration method comprises the following steps:
firstly, coke oven tail gas is subjected to heat exchange through a heat exchanger B, the temperature of the heat exchanged coke oven tail gas is reduced to be lower than 195 ℃, then the coke oven tail gas sequentially enters a spray tower A and a spray tower B from the bottom and is cooled by spraying spray liquid, the cooled coke oven tail gas is discharged from the top of the spray tower B, the temperature is reduced to be lower than 50 ℃, finally the coke oven tail gas sequentially enters a rotary disk dehumidifier A and a rotary disk dehumidifier B for dehumidification and then enters a fuel gas pipe network, and the moisture content of the dehumidified coke oven tail gas is less than 5%;
collecting the spray liquid sprayed in the spray tower A and the spray tower B, then entering a water cooling tower for cooling, entering a water treatment device for treatment after cooling, and entering the spray tower A and the spray tower B again through a circulating pump after treatment;
the moisture desorption method comprises the following steps:
step one, introducing fresh air into a heat exchanger A through a fan, wherein the amount of the introduced fresh air is 1/20 of the amount of the coke oven tail gas;
step two, opening a valve A2, closing a valve A1, and allowing fresh air to enter a rotary disk dehumidifier A to perform moisture desorption on a molecular sieve in the rotary disk dehumidifier A after heat exchange of a heat exchanger A and a heat exchanger B in sequence;
step three, opening a valve B2, closing a valve B1, and allowing fresh air to enter a rotary disk dehumidifier B to perform moisture desorption on a molecular sieve in the rotary disk dehumidifier B after heat exchange of a heat exchanger A and the heat exchanger B in sequence;
here, it should be noted that the moisture desorption process of the rotary disk dehumidifier a and the rotary disk dehumidifier B is performed alternately, wherein the temperature of the fresh air after heat exchange by the heat exchanger a reaches about 112 ℃, the temperature of the fresh air after heat exchange by the heat exchanger B reaches about 195 ℃, and the fresh air after heat exchange enters the corresponding rotary disk dehumidifier to complete the moisture desorption process of the molecular sieve in the rotary disk dehumidifier;
and step four, evacuating the air after moisture desorption is finished after the air is subjected to heat exchange of the heat exchanger A and treatment of the tail gas treatment device in sequence.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (2)
1. The utility model provides a coke oven tail gas dehydration device, includes spray column A, spray column B, carousel dehumidifier A, carousel dehumidifier B and heat exchanger B, and coke oven tail gas is linked together its characterized in that with fuel gas pipe network behind this dehydration device: the coke oven tail gas is connected with a heat exchanger B, a spray tower A and a spray tower B in sequence through pipelines and then is divided into two branches, wherein one branch is connected to a fuel gas pipe network through a pipeline after passing through a rotary disk dehumidifier A, a valve A1 is arranged on the branch, the other branch is connected to the fuel gas pipe network through a pipeline after passing through a rotary disk dehumidifier B, and a valve B1 is arranged on the branch;
the water inlets of the spray tower A and the spray tower B are communicated with a make-up water source through a circulating pump, the water outlets of the spray tower A and the spray tower B are jointly connected to the inlet of a water cooling tower, and the outlet of the water cooling tower is sequentially connected with a water treatment device and the circulating pump through pipelines.
2. The coke oven tail gas dehydration treatment device of claim 1, characterized in that: the dehydration treatment device further comprises a heat exchanger A and a fan used for introducing fresh air into the heat exchanger A, the fan is divided into two branches after being sequentially connected with the heat exchanger A and the heat exchanger B through pipelines, one branch is provided with a valve A2 and is connected to a rotary disc dehumidifier A after passing through the heat exchanger B, the other branch is provided with a valve B2 and is connected to a rotary disc dehumidifier B after passing through the heat exchanger B, and the rotary disc dehumidifier A and the rotary disc dehumidifier B are connected to the heat exchanger A together and then are connected with a tail gas treatment device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922385683.8U CN211688942U (en) | 2019-12-26 | 2019-12-26 | Coke oven tail gas dehydration device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922385683.8U CN211688942U (en) | 2019-12-26 | 2019-12-26 | Coke oven tail gas dehydration device |
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| CN211688942U true CN211688942U (en) | 2020-10-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111019717A (en) * | 2019-12-26 | 2020-04-17 | 河南平煤神马环保节能有限公司 | Coke oven tail gas dehydration treatment device and treatment method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111019717A (en) * | 2019-12-26 | 2020-04-17 | 河南平煤神马环保节能有限公司 | Coke oven tail gas dehydration treatment device and treatment method thereof |
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Inventor after: Sun Yi Inventor after: Hu Yajie Inventor after: Wei Jie Inventor after: Wang Shuai Inventor after: Wang Yanhong Inventor after: Gu Haitao Inventor after: Lu Xianpin Inventor after: Yang Senfa Inventor after: Zheng Xiaofei Inventor after: Zhang Lei Inventor after: Wang Kailei Inventor after: Zhang Dengyue Inventor after: Dong Jianxun Inventor after: Han Lian Inventor after: Huang Rengang Inventor after: Hua Jinling Inventor after: Su Xiaojie Inventor after: Hong Xuelian Inventor after: Yu Gang Inventor before: Sun Yi Inventor before: Hu Yajie Inventor before: Wei Jie Inventor before: Wang Shuai Inventor before: Wang Yanhong Inventor before: Gu Haitao Inventor before: Lu Xianpin Inventor before: Yang Senfa Inventor before: Zheng Xiaofei Inventor before: Zhang Lei Inventor before: Wang Kailei Inventor before: Zhang Dengyue Inventor before: Dong Jianxun Inventor before: Han Lian Inventor before: Huang Rengang Inventor before: Hua Jinling Inventor before: Su Xiaojie Inventor before: Hong Xuelian Inventor before: Yu Gang |