WO2022041926A1

WO2022041926A1 - Coke oven flue gas treatment system and method

Info

Publication number: WO2022041926A1
Application number: PCT/CN2021/099373
Authority: WO
Inventors: 胡鑫; 邵雁; 罗海兵; 熊敬超; 阮兵; 向浩; 李军伟; 王红飞; 徐超; 潘响明
Original assignee: 中冶南方都市环保工程技术股份有限公司
Priority date: 2020-08-27
Filing date: 2021-06-10
Publication date: 2022-03-03
Also published as: CN112191061A

Abstract

Provided are a coke oven flue gas treatment system and a coke oven flue gas treatment method. The coke oven flue gas treatment system comprises a coke powder conveying device, a tar adsorption device, and a bag dust removal device, wherein the coke powder conveying device is in communication with the tar adsorption device; the tar adsorption device is in communication with the bag dust removal device; the coke powder conveying device is used for conveying coke powder to the tar adsorption device; the tar adsorption device is used for mixing coke oven flue gas and the coke powder; and the bag dust removal device is used for filtering the coke oven flue gas and the coke powder. By means of the present invention, coke oven flue gas and coke powder can be fully mixed, and tar and harmful gas in the coke oven flue gas are adsorbed by means of the coke powder, such that the tar and the harmful gas in the coke oven flue gas can be effectively recycled.

Description

A coke oven flue gas treatment system and method

technical field

The invention relates to the technical field of coke oven flue gas treatment, in particular to a coke oven flue gas treatment system and method.

Background technique

With the continuous improvement of environmental protection requirements, the requirements for the emission of particulate matter in dust are becoming more and more stringent. In order to meet the requirements of ultra-low emission, for the coke oven flue gas with complex composition, it is necessary to further strengthen the dust control in the flue gas. Because coke oven flue gas often contains more tar, and these tars have strong viscosity, tar is easy to adhere to the surface of the bag in the bag filter, which increases the resistance of the bag filter and seriously affects the operation of the bag filter. And it is easy to affect the subsequent coke oven flue gas treatment process.

At present, the commonly used process for the treatment of tar in coke oven flue gas is the electric tar capture method. After using this method for a long time, foreign objects such as tar are easily attached to the insulator, which requires regular cleaning and maintenance, and this method is difficult to use for flue gas treatment with large gas volume, and cannot effectively remove tar in coke oven flue gas. In addition, there are other harmful gases such as benzene series and H2S in the coke oven flue gas. The traditional bag filter can only deal with the trapped particulate matter, but it is helpless for gaseous harmful substances.

Therefore, a new coke oven flue gas treatment system and method are urgently needed to effectively recover tar and harmful gases in coke oven flue gas.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a coke oven flue gas treatment system and method to solve the problem that the existing coke oven flue gas treatment system and method cannot effectively recover tar and harmful gases in coke oven flue gas.

In order to solve the above technical problems, the present invention provides a coke oven flue gas treatment system, including a coke powder conveying device, a tar adsorption device and a bag dust removal device, the coke powder conveying device is communicated with the tar adsorption device, and the tar adsorption device is The device is communicated with the bag dust removal device, the coke powder conveying device is used for conveying coke powder to the tar adsorption device, the tar adsorption device is used for mixing coke oven flue gas and coke powder, and the bag dust removal device is used for Filter coke oven flue gas and coke powder.

Optionally, the coke powder conveying device includes a coke powder storage bin, a first rotary feeder, a powder feeding trough and a first fluidizing fan, and the coke powder storage bin is in communication with one end of the first rotary feeder. , the other end of the first rotary feeder is communicated with one end of the powder feeding chute, the other end of the powder feeding chute is communicated with the tar adsorption device, and the outlet of the first fluidizing fan is communicated with the The powder trough is connected, the first rotary feeder is used for conveying the coke powder in the coke powder storage bin to the powder feeding trough, and the first fluidizing fan is used for feeding the coke powder in the powder feeding trough. The powder is blown into the tar adsorption device.

Optionally, the tar adsorption device includes a mixing pipe, a venturi reactor and a reaction chamber, one end of the mixing pipe is the coke oven flue gas inlet, and the other end of the mixing pipe is the inlet of the venturi reactor. The outlet of the venturi reactor is communicated with the inlet of the reaction chamber, the outlet of the reaction chamber is communicated with the bag dust removal device, and the mixing pipe is communicated with the powder feeding tank.

Optionally, the tar adsorption device includes a mixing pipe, a venturi reactor and a reaction chamber, one end of the mixing pipe is the coke oven flue gas inlet, and the other end of the mixing pipe is the inlet of the venturi reactor. The outlet of the venturi reactor is communicated with the inlet of the reaction chamber, the outlet of the reaction chamber is communicated with the bag dust removal device, and the mixing pipe is communicated with the powder feeding tank, wherein the mixing The outer diameter of the tube and the reaction chamber is larger than the outer diameter of the venturi reactor.

Optionally, the Venturi reactor includes an outer casing and a Venturi tube, the outer casing includes a first mixing section and a second mixing section, and the Venturi tube is disposed on the outer casing along the axial direction of the outer casing. In the second mixing section, one end of the first mixing section is communicated with the other end of the mixing tube, the other end of the first mixing section is communicated with one end of the venturi tube, and the other end of the venturi tube is connected to The inlet of the reaction chamber is in communication.

Optionally, the venturi tube includes an inlet section, a throat section and an outlet section, one end of the inlet section is communicated with the other end of the first mixing section, and the other end of the inlet section is connected to the other end of the throat section. One end is communicated, the other end of the throat section is communicated with one end of the outlet section, the other end of the outlet section is communicated with the inlet of the reaction chamber, and the outer diameter of the end of the inlet section away from the throat section is greater than The outer diameter of the end of the inlet section close to the throat section, the outer diameter of the end of the outlet section away from the throat section is greater than the outer diameter of the end of the outlet section close to the throat section, the throat section is The outer diameters of one end of the throat section and the other end of the throat section are equal.

Optionally, the bag filter includes a bag filter and an induced draft fan, the bag filter is communicated with the outlet of the reaction chamber and the inlet of the induced draft fan, and the induced draft fan is used for suctioning the bag dust collector. gas in the device.

Optionally, it also includes a coke powder circulating fluidization device, the coke powder circulating fluidization device is communicated with the bag dust removal device and the tar adsorption device, and the coke powder circulating fluidization device is used to collect the dust generated by the bag dust removal device. The dust is transported to the tar adsorption device.

The present invention also provides a coke oven flue gas treatment method for the above coke oven flue gas treatment system, wherein the coke oven flue gas treatment system includes a coke powder conveying device, a tar adsorption device and a bag dust removal device, and the coke powder conveying device communicated with the tar adsorption device, and the tar adsorption device communicated with the bag dust removal device, wherein the coke oven flue gas treatment method includes:

The coke powder is conveyed to the tar adsorption device through the coke powder conveying device;

Mix coke oven flue gas and coke powder through the tar adsorption device;

Filter coke oven flue gas and coke powder through bag filter.

Optionally, before the coke oven flue gas and coke powder are mixed by the tar adsorption device, the coke oven flue gas is disconnected to pre-spray the coke powder in the bag dust removal device.

A coke oven flue gas treatment system and method provided by the present invention have the following beneficial effects:

Since the coke powder conveying device is used for conveying coke powder to the tar adsorption device, the coke powder conveying device is communicated with the tar adsorption device, and the tar adsorption device is used for mixing coke oven flue gas and coke powder, so The coke oven flue gas and coke powder can be fully mixed, and the tar and harmful gases in the coke oven flue gas can be adsorbed by the coke powder. Because the tar adsorption device is connected with the bag dust removal device, the bag dust removal device is used for filtering Coke oven flue gas and coke powder, so dust and gas can be separated by bag dust removal device, and tar, harmful gas and coke powder in coke oven flue gas can be effectively recovered by recycling dust.

Description of drawings

1 is a schematic structural diagram of a coke oven flue gas treatment system in an embodiment of the present invention;

Fig. 2 is the top view of the Chinese churi reactor of the coke oven flue gas treatment system in the embodiment of the present invention;

FIG. 3 is a cross-sectional view of the venturi reactor of FIG. 2 taken along line A-A.

Description of reference numbers:

110 - coke powder storage bin; 120 - first rotary feeder; 130 - powder feeding chute; 140 - first fluidizing fan;

210 - mixing tube; 220 - venturi reactor; 221 - outer casing; 222 - venturi tube; 223 - inlet section, 224 - throat section; 225 - outlet section; 226 - first mixing section; 227 - second mixing segment; 230-reaction chamber;

320-filter bin; 321-first filter bin; 322-second filter bin; 330-bag; 340-induced fan;

400 - ash library;

510-circulation tank; 520-second rotary feeder.

detailed description

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

Thus, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of the invention is usually placed in use, only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying The device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first", "second", "third", etc. are only used to differentiate the description and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that a component is required to be absolutely horizontal or overhang, but rather may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise expressly specified and limited, the terms "arranged", "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, It can also be a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or the internal communication between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

The invention provides a coke oven flue gas treatment system. Referring to FIG. 1 , FIG. 1 is a schematic structural diagram of a coke oven flue gas treatment system according to an embodiment of the present invention. The coke oven flue gas treatment system includes a coke powder conveying device, a tar adsorption device and a bag dust removal device. The coke powder conveying device is communicated with the tar adsorption device, the tar adsorption device is communicated with the bag dust removal device, and the coke powder conveying device is used for conveying coke powder to the tar adsorption device. It is used to mix coke oven flue gas and coke powder, and the bag filter is used to filter coke oven flue gas and coke powder.

Wherein, the dust is the dust collected by the bag dust removal device when filtering coke oven flue gas and coke powder. The dust includes coke powder with no tar adsorbed and/or adsorbed with harmful gas, coke powder with adsorbed tar and/or adsorbed with harmful gas, particulate matter in coke oven flue gas, and the like. The coke powder can be the coke powder collected by the coke-extracting and dust-removing system of the coke oven plant.

Specifically, referring to FIG. 1 , the coke powder conveying device includes a coke powder storage bin 110 , a first rotary feeder 120 , a powder feeding trough 130 and a first fluidizing fan 140 . The coke powder storage bin 110 is communicated with one end of the first rotary feeder 120 , the other end of the first rotary feeder 120 is communicated with one end of the powder feeding chute 130 , and the other end of the powder feeding chute 130 is communicated with each other. One end is communicated with the tar adsorption device, and the outlet of the first fluidizing fan 140 is communicated with the powder feeding tank 130 . The first rotary feeder 120 is used for conveying the coke powder in the coke powder storage bin 110 to the powder feeding chute 130 , and the first fluidizing fan 140 is used for conveying the coke powder in the powder feeding chute 130 . The powder is blown to the tar adsorption device.

1, the tar adsorption device includes a mixing pipe 210, a venturi reactor 220 and a reaction chamber 230. One end of the mixing pipe 210 is the coke oven flue gas inlet, and the other end of the mixing pipe 210 is connected to the venturi The inlet of the venturi reactor 220 is communicated with the inlet of the venturi reactor 220, the outlet of the venturi reactor 220 is communicated with the inlet of the reaction chamber 230, the outlet of the reaction chamber 230 is communicated with the bag dust removal device, and the mixing pipe 210 is communicated with the The powder feeding chute 130 is communicated. Wherein, the outer diameter of the mixing tube 210 and the reaction chamber 230 is larger than the outer diameter of the venturi reactor 220 .

Specifically, referring to FIG. 2 and FIG. 3, FIG. 2 is a top view of the venturi reactor 220 of the coke oven flue gas treatment system in the embodiment of the present invention, and FIG. 3 is a cross-sectional view of the venturi reactor 220 of FIG. 2 along the line AA, The Venturi reactor 220 includes an outer casing 221 and a Venturi tube 222, the outer casing 221 includes a first mixing section 226 and a second mixing section 227, and the Venturi tube 222 is along the axial direction of the outer casing 221. is arranged in the second mixing section 227, one end of the first mixing section 226 is communicated with the other end of the mixing tube 210, and the other end of the first mixing section 226 is communicated with one end of the venturi tube 222, The other end of the venturi tube 222 communicates with the inlet of the reaction chamber 230 . Wherein, the first mixing section and the second mixing section are fixedly connected.

The venturi tube 222 includes an inlet section 223, a throat section 224 and an outlet section 225, one end of the inlet section 223 communicates with the other end of the first mixing section 226, and the other end of the inlet section 223 is connected to the One end of the throat section 224 is communicated with, the other end of the throat section 224 is communicated with one end of the outlet section 225 , and the other end of the outlet section 225 is communicated with the inlet of the reaction chamber 230 . The outer diameter of the end of the inlet section 223 away from the throat section 224 is larger than the outer diameter of the end of the inlet section 223 close to the throat section 224 , and the outer diameter of the end of the outlet section 225 away from the throat section 224 It is greater than the outer diameter of one end of the outlet section 225 close to the throat section 224 , and the outer diameter of the throat section 224 is equal from one end of the throat section 224 to the other end of the throat section 224 . In this way, coke oven flue gas and coke powder can be easily mixed fully.

As shown in FIG. 2 , the throat section 224 is in the shape of a hollow cylinder, and the inlet section 223 and the outlet section 225 are in the shape of a hollow truncated cone. The throat section 224 is connected with the small ends of the inlet section 223 and the outlet section 225, respectively.

The number of the venturi tubes 222 may be at least two. Compared with the venturi reactor 220 having only one venturi tube 222 , the venturi reactor 220 can make the coke oven flue gas and coke powder more uniformly mixed.

As shown in FIG. 2 , in this embodiment, the number of the venturi tubes 222 is seven.

The tar adsorption device further includes an air distribution plate, and the air distribution plate is arranged at one end of the mixing pipe 210 . The place where the powder feeding tank 130 communicates with the mixing pipe 210 is located between the air distribution plate and the Venturi reactor 220, and the air distribution plate can make coke oven flue gas and coke powder evenly mixed.

Referring to FIG. 1 , the bag filter includes a bag filter and an induced draft fan 340 . The bag filter is communicated with the outlet of the reaction chamber 230 and the inlet of the induced draft fan 340, and the induced draft fan 340 is used to suck the gas in the bag filter.

Specifically, the bag filter includes a filter chamber 320 and a bag 330. The bag 330 divides the filter chamber 320 into a first filter chamber 321 and a second filter chamber 322. The first filter chamber 321 and the The outlet of the reaction chamber 230 is communicated with, and the second filter chamber 322 is communicated with the inlet of the induced draft fan 340 .

Preferably, the filter bin 320 is arranged vertically, so as to facilitate ash fall.

Referring to FIG. 1 , the coke oven flue gas treatment system further includes an ash storehouse 400 . The ash storage 400 communicates with the first filter bin 321 in the bag dust removal device, and the ash storage 400 is used for collecting dust.

Referring to FIG. 1 , the coke oven flue gas treatment system further includes a coke powder circulating fluidization device. The coke powder circulating fluidization device is communicated with the bag dust removal device and the tar adsorption device. The coke powder circulating fluidization device is used to collect the dust generated by the bag dust removal device, and transport the dust to the tar adsorption device. By setting the coke powder circulating fluidization device, the coke powder can be recycled and the utilization rate of the coke powder can be improved.

Specifically, the coke powder circulating fluidization device includes a circulating tank 510 and a second rotary feeder 520. One end of the second rotary feeder 520 is connected to the first filter bin 321 in the bag dust removal device. The other end of the second rotary feeder 520 is communicated with one end of the circulation tank 510, the other end of the circulation tank 510 is communicated with the mixing pipe 210 in the tar adsorption device, and the circulation tank 510 The place where the other end communicates with the mixing pipe 210 in the tar adsorption device is located between the air distribution plate and the venturi reactor 220, and the outlet of the first fluidizing fan 140 is communicated with the circulation tank 510, so The second feeder is used to transport the dust in the first filter bin 321 to the circulation tank 510, and the first fluidization fan 140 is used to blow the dust in the circulation tank 510 to the tar adsorption device. In other embodiments, a second fluidization fan is further included, the outlet of the second fluidization fan is communicated with the circulation tank 510 , and the second fluidization fan is used for removing the dust in the circulation tank 510 Blowing into the tar adsorption device, and the outlet of the first fluidizing fan 140 is only communicated with the powder feeding tank 130, and the first fluidizing fan 140 is only used for blowing the coke powder in the powder feeding tank 130 to the tar adsorption in the device.

According to the ash fall of the bag filter, the amount of coke powder in the powder feeding tank 130 can be adjusted by the first rotary feeder 120 to adjust the amount of powder spraying, so as to ensure that the coke powder can fully absorb the tar in the flue gas and make full use of it. coke powder.

According to the ash fall of the bag filter, the amount of coke powder in the circulation tank 510 can be adjusted through the second rotary feeder 520 to adjust the amount of powder spraying, so as to ensure that the coke powder can fully absorb the tar in the flue gas and make full use of the coke powder. pink.

The process that the coke oven flue gas treatment system processes coke oven flue gas is as follows:

First, when the system is turned on, the coke oven flue gas is first disconnected, the induced draft fan 340 is operated at a low frequency, and the coke powder in the coke powder storage bin 110 is transported to the powder feeding chute 130 through the first rotary feeder 120 , The coke powder in the powder feeding tank 130 is blown to the tar adsorption device by the first fluidizing fan 140, and then the coke powder is transported to the bag dust removal device under the action of the induced draft fan, and the coke powder is pre-sprayed on the bag dust removal device. On the bag 330 in the device, in order to prevent the incompletely adsorbed tar from adhering to the bag 330 during the later operation, which will increase the resistance of the bag filter, seriously affect the operation of the bag filter, and easily affect the subsequent coke oven flue gas treatment process. cause an impact.

Secondly, after a period of time, the coke oven flue gas enters the mixing pipe 210, and the frequency of the induced draft fan 340 is adjusted. The coke oven flue gas entering the mixing pipe 210 and the coke powder start to mix and flow through the mixing pipe 210, the Venturi The reactor 220 and the reaction chamber 230 flow into the first filter chamber 321 in the bag 330 dust removal device, and then the mixture of coke oven flue gas and coke powder is filtered through the bag 330 to capture dust, and the captured dust falls in the first filter. At the bottom of the bin 321 , the gas in the mixture of coke oven flue gas and coke powder passes through the cloth bag 330 and flows to the subsequent process under the action of the induced draft fan 340 .

After that, part of the dust falling on the bottom of the first filter bin 321 flows into the ash storage 400 , and part of the dust is transported to the circulation tank 510 through the second feeder, and under the action of the first fluidizing fan 140 The dust in the circulation tank 510 is blown into the tar adsorption device.

This embodiment also provides a coke oven flue gas treatment method for the above-mentioned coke oven flue gas treatment system, wherein the coke oven flue gas treatment system includes a coke powder conveying device, a tar adsorption device and a bag dust removal device. The powder conveying device is communicated with the tar adsorption device, and the tar adsorption device is communicated with the bag dust removal device, wherein the coke oven flue gas treatment method includes:

First, convey coke powder to the tar adsorption device through the coke powder conveying device;

Secondly, mixing coke oven flue gas and coke powder through the tar adsorption device;

Thirdly, filter coke oven flue gas and coke powder through bag filter.

Further, before the coke oven flue gas and coke powder are mixed by the tar adsorption device, the coke oven flue gas is disconnected, so that the coke powder is pre-sprayed in the bag dust removal device.

The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes and modifications made by those of ordinary skill in the field of the present invention based on the above disclosure all belong to the protection scope of the claims.

Claims

A coke oven flue gas treatment system, characterized in that it includes a coke powder conveying device, a tar adsorption device and a bag dust removal device, the coke powder conveying device is communicated with the tar adsorption device, and the tar adsorption device is connected with the bag The dust removal device is connected, the coke powder conveying device is used for conveying coke powder to the tar adsorption device, the tar adsorption device is used for mixing coke oven flue gas and coke powder, and the bag dust removal device is used for filtering coke oven flue gas and coke powder.
The coke oven flue gas treatment system according to claim 1, wherein the coke powder conveying device comprises a coke powder storage bin, a first rotary feeder, a powder feeding trough and a first fluidizing fan, and the coke powder The storage bin is communicated with one end of the first rotary feeder, the other end of the first rotary feeder is communicated with one end of the powder feeding chute, and the other end of the powder feeding chute is communicated with the tar adsorption device The outlet of the first fluidizing fan is communicated with the powder feeding chute, and the first rotary feeder is used to transport the coke powder in the coke powder storage bin to the powder feeding chute. The fluidization fan is used for blowing the coke powder in the powder feeding tank to the tar adsorption device.
The coke oven flue gas treatment system according to claim 2, wherein the tar adsorption device comprises a mixing pipe, a venturi reactor and a reaction chamber, and one end of the mixing pipe is a coke oven flue gas inlet, and the The other end of the mixing pipe is communicated with the inlet of the venturi reactor, the outlet of the venturi reactor is communicated with the inlet of the reaction chamber, the outlet of the reaction chamber is communicated with the bag dust removal device, and the mixing A pipe communicates with the powder feeding chute.
The coke oven flue gas treatment system according to claim 3, wherein the tar adsorption device comprises a mixing pipe, a venturi reactor and a reaction chamber, and one end of the mixing pipe is a coke oven flue gas inlet, and the The other end of the mixing pipe is communicated with the inlet of the venturi reactor, the outlet of the venturi reactor is communicated with the inlet of the reaction chamber, the outlet of the reaction chamber is communicated with the bag dust removal device, and the mixing A pipe communicates with the powder feeding tank, wherein the outer diameter of the mixing pipe and the reaction chamber is larger than the outer diameter of the venturi reactor.
The coke oven flue gas treatment system according to claim 4, wherein the venturi reactor comprises an outer casing and a venturi, the outer casing comprises a first mixing section and a second mixing section, the venturi The inner tube is arranged in the second mixing section along the axial direction of the outer sleeve, one end of the first mixing section is communicated with the other end of the mixing tube, and the other end of the first mixing section is the Venturi One end of the tube is in communication, and the other end of the venturi tube is in communication with the inlet of the reaction chamber.
The coke oven flue gas treatment system according to claim 5, wherein the venturi tube comprises an inlet section, a throat section and an outlet section, and one end of the inlet section communicates with the other end of the first mixing section , the other end of the inlet section is communicated with one end of the throat section, the other end of the throat section is communicated with one end of the outlet section, and the other end of the outlet section is communicated with the inlet of the reaction chamber, so The outer diameter of the end of the inlet section away from the throat section is larger than the outer diameter of the end of the inlet section close to the throat section, and the outer diameter of the end of the outlet section away from the throat section is larger than the outer diameter of the end of the outlet section close to the throat section. The outer diameter of one end of the throat section is equal to the outer diameter of the throat section from one end of the throat section to the other end of the throat section.
The coke oven flue gas treatment system according to claim 5, wherein the bag filter includes a bag filter and an induced draft fan, the bag filter and the outlet of the reaction chamber and the inlet of the induced draft fan connected, the induced draft fan is used for suctioning the gas in the bag filter.
The coke oven flue gas treatment system according to claim 5, further comprising a coke powder circulating fluidization device, and the coke powder circulating fluidization device is communicated with the bag dust removal device and the tar adsorption device, so The coke powder circulating fluidization device is used to collect the dust generated by the bag dust removal device, and transport the dust to the tar adsorption device.
A coke oven flue gas treatment method for a coke oven flue gas treatment system according to any one of claims 1 to 8, wherein the coke oven flue gas treatment system comprises a coke powder conveying device, a tar adsorption device and a A bag dust removal device, the coke powder conveying device is communicated with the tar adsorption device, and the tar adsorption device is communicated with the bag dust removal device, wherein the coke oven flue gas treatment method includes:

The coke powder is conveyed to the tar adsorption device through the coke powder conveying device;

Mix coke oven flue gas and coke powder through the tar adsorption device;

Filter coke oven flue gas and coke powder through bag filter.
The method for treating coke oven flue gas according to claim 9, wherein before mixing coke oven flue gas and coke powder by the tar adsorption device, the coke oven flue gas is disconnected to pre-spray the coke powder on the coke oven flue gas. in the bag filter.