CN212215079U - Bypass air-bleeding dust-removing flue gas secondary treatment device - Google Patents

Bypass air-bleeding dust-removing flue gas secondary treatment device Download PDF

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Publication number
CN212215079U
CN212215079U CN202020436530.1U CN202020436530U CN212215079U CN 212215079 U CN212215079 U CN 212215079U CN 202020436530 U CN202020436530 U CN 202020436530U CN 212215079 U CN212215079 U CN 212215079U
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China
Prior art keywords
flue gas
dust
treatment device
secondary treatment
dust collector
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CN202020436530.1U
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Chinese (zh)
Inventor
泥卫东
马超伟
张春辉
康振兴
赵二猛
武彦栋
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Sino Environment Protection Engineering Technology Co ltd
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Sino Environment Protection Engineering Technology Co ltd
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Abstract

The utility model discloses a bypass is let out wind and is removed dust flue gas secondary treatment device, it relates to cement kiln and deals with domestic waste technical field in coordination. The device comprises a quenching chamber, a dust collector and a spray desulfurization adsorption tower, wherein the spray desulfurization adsorption tower is arranged between the quenching chamber and the dust collector, and the dust collector is connected to a kiln tail chimney through a discharge fan. The utility model has the advantages of reasonable design, SO in the flue gas can be absorbed2The system has the advantages of reducing the dust collection temperature of the gas entering the bag, increasing the working efficiency of the fan, along with reliable system operation, high desulfurization rate and strong practicability.

Description

Bypass air-bleeding dust-removing flue gas secondary treatment device
Technical Field
The utility model relates to a cement kiln deals with domestic waste technical field in coordination, concretely relates to bypass is let out wind and is removed dust flue gas secondary treatment device.
Background
At present, domestic projects for cooperatively treating domestic garbage and dangerous waste by using a cement kiln are common, but because the garbage, the dangerous waste and partial raw materials have high chlorine content, the crust becomes the biggest obstacle to the stable operation of the whole system in the operation process of the cement kiln system; in order to reduce labor force and increase the operation reliability of the system, a smith design bypass air release system chlorine removal system process flow is introduced, and the process has the following problems: 1. according to the fact that the current emission standard of partial areas in China is higher and higher, the concentration of SO2 which is finally discharged by the bypass ventilation exceeds the standard, and therefore the bypass system cannot normally operate; 2. the content of the chlorine flying back of the bypass air release system is higher, and a reasonable secondary treatment scheme is not provided.
To sum up, the utility model designs a bypass is let out wind and is removed dust flue gas secondary treatment device.
SUMMERY OF THE UTILITY MODEL
To the deficiency that exists on the prior art, the utility model aims to provide a bypass is let out wind and is removed dust flue gas secondary treatment device, structural design is reasonable, can absorb SO in the flue gas2The system has the advantages of reducing the dust collection temperature of the gas entering the bag, increasing the working efficiency of the fan, along with reliable system operation, high desulfurization rate and strong practicability.
In order to achieve the above purpose, the present invention is realized by the following technical solution: the bypass air-bleeding dust-removing flue gas secondary treatment device comprises a quenching chamber, a dust collector and a spray desulfurization adsorption tower, wherein the spray desulfurization adsorption tower is arranged between the quenching chamber and the dust collector, and the dust collector is connected to a kiln tail chimney through a discharge fan.
Preferably, a butterfly valve, a gate valve and a cold air valve are sequentially arranged between the quenching chamber and the spray desulfurization adsorption tower, and a node between the butterfly valve and the gate valve is connected to the decomposing furnace.
Preferably, the quenching chamber is also connected with an air cannon, a quenching fan and an emergency fan.
Preferably, the dust collector is connected with the rotary feeder through a zipper machine and a screw conveyor, one side of the rotary feeder is connected with a Roots blower, and the other side of the rotary feeder is connected to the fly ash warehouse through an ash conveying pipeline.
Preferably, a lime absorbent is arranged in the spray desulfurization adsorption tower.
The utility model has the advantages that: the utility model has the advantages of reasonable design, SO in the flue gas can be absorbed2The system has the advantages of reducing the dust collection temperature of the gas entering the bag, increasing the working efficiency of the fan, along with reliable system operation, high desulfurization rate and strong practicability.
Drawings
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments;
fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
Referring to fig. 1, the following technical solutions are adopted in the present embodiment: the bypass air-bleeding dust-removing flue gas secondary treatment device comprises a quenching chamber 1 and a dust collector 3, and further comprises a spray desulfurization adsorption tower 2, wherein the spray desulfurization adsorption tower 2 is installed between the quenching chamber 1 and the dust collector 3, and the dust collector 3 is connected to a kiln tail flue pipe through a discharge fan 5.
It is worth noting that a butterfly valve 6, a gate valve 7 and a cold air valve 8 are sequentially arranged between the quenching chamber 1 and the spray desulfurization adsorption tower 2, and a node between the butterfly valve 6 and the gate valve 7 is connected to a decomposing furnace 9.
It is noted that the quenching chamber 1 is also connected with an air cannon 10, a quenching fan 11 and an emergency fan 12.
It is noted that the dust collector 3 is connected with a rotary feeder 15 through a zipper machine 13 and a screw conveyor 14, one side of the rotary feeder 15 is connected with a Roots blower 16, and the other side of the rotary feeder 15 is connected with the fly ash storage 4 through an ash conveying pipeline 17.
In addition, a lime absorbent is arranged in the spray desulfurization adsorption tower 2.
The secondary processing apparatus of the present embodiment is improved as follows:
firstly, aiming at the over-standard concentration of SO2 discharged by flue gas, a secondary desulfurization process can be added between a quenching chamber and a dust collector, and specifically, a rotary spray drying flue gas desulfurization process can be adopted, lime is taken as a desulfurization absorbent, slaked lime is digested and added with water to prepare slaked lime milk, the slaked lime milk is pumped into an atomizing device in an absorption tower by a pump, and the slaked lime milk is atomized into a fine absorbent to be mixed and contacted with the flue gas in the absorption tower and then mixed and contacted with the SO in the flue gas2Chemical reaction for producing CaSO3SO in flue gas2And at the same time, the moisture carried by the absorbent is quickly evaporated and dried, and the temperature of the flue gas is reduced. The desulfurization reactant and the dried particles of the unused absorbent are taken out of the absorption tower along with the flue gas, and enter a dust remover to be collected. And the desulfurized flue gas is discharged after being dedusted by a deduster. In order to improve the utilization rate of the desulfurization absorbent, part of collected materials of the dust collector is generally added into a pulping system for recycling. The process has two alternative atomization forms, one is rotary atomizing wheel atomization, and the other is gas-liquid two-phase flow.
Secondly, aiming at the defects of large fly ash amount, high chlorine content and application in brick making or road building industry, or special cement in the area with over-small requirement on chlorine content in the industry.
In the specific embodiment, the spray desulfurization absorption tower is additionally arranged between the quenching chamber and the dust collector, SO that SO in the flue gas can be absorbed2The dust collecting temperature of the gas entering the bag can be reduced, and the working efficiency of the fan is increased;
the basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (5)

1. A bypass air-bleeding dust-removal flue gas secondary treatment device is characterized by comprising a quenching chamber (1), a dust collector (3) and a spray desulfurization adsorption tower (2), wherein the spray desulfurization adsorption tower (2) is installed between the quenching chamber (1) and the dust collector (3), and the dust collector (3) is connected to a kiln tail chimney through a discharge fan (5).
2. The secondary treatment device for the bypass air-bleeding dust-removal flue gas as recited in claim 1, wherein a butterfly valve (6), a gate valve (7) and a cold air valve (8) are sequentially arranged between the quenching chamber (1) and the spray desulfurization adsorption tower (2), and a node between the butterfly valve (6) and the gate valve (7) is connected to the decomposing furnace (9).
3. The secondary treatment device for the bypass air-bleeding dust-removing flue gas as claimed in claim 1, wherein the quenching chamber (1) is further connected with an air cannon (10), a quenching fan (11) and an emergency fan (12).
4. The secondary treatment device for the bypass air-bleeding dust-removal flue gas as recited in claim 1, wherein the dust collector (3) is connected with a rotary feeder (15) through a zipper machine (13) and a screw conveyor (14), one side of the rotary feeder (15) is connected with a roots blower (16), and the other side of the rotary feeder (15) is connected with the fly ash storage (4) through an ash conveying pipeline (17).
5. The secondary treatment device for the bypass air-bleeding dust-removing flue gas as claimed in claim 1, wherein a lime absorbent is arranged in the spray desulfurization adsorption tower (2).
CN202020436530.1U 2020-03-31 2020-03-31 Bypass air-bleeding dust-removing flue gas secondary treatment device Active CN212215079U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020436530.1U CN212215079U (en) 2020-03-31 2020-03-31 Bypass air-bleeding dust-removing flue gas secondary treatment device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020436530.1U CN212215079U (en) 2020-03-31 2020-03-31 Bypass air-bleeding dust-removing flue gas secondary treatment device

Publications (1)

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CN212215079U true CN212215079U (en) 2020-12-25

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CN (1) CN212215079U (en)

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