CN205760555U - A kind of coke oven chimney hot-backup system being applicable to smoke-gas wet desulfurization denitrating technique - Google Patents
A kind of coke oven chimney hot-backup system being applicable to smoke-gas wet desulfurization denitrating technique Download PDFInfo
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- CN205760555U CN205760555U CN201620479180.0U CN201620479180U CN205760555U CN 205760555 U CN205760555 U CN 205760555U CN 201620479180 U CN201620479180 U CN 201620479180U CN 205760555 U CN205760555 U CN 205760555U
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- coke oven
- flue
- smoke
- wet desulphurization
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
This utility model relates to the coke oven chimney hot-backup system being applicable to smoke-gas wet desulfurization denitrating technique, flue is set between coke oven and coke oven chimney, coke oven and wet desulphurization take off and include setting smoke conveying duct between nitre system, and the neat stress pipeline drawn from wet desulphurization denitrating system connects flue；Also including gas-gas heat exchanger and booster fan, described smoke conveying duct connects the smoke inlet of wet desulphurization denitrating system by the medium loop one of gas-gas heat exchanger, and described neat stress pipeline connects flue by the medium loop two of gas-gas heat exchanger；Set booster fan on smoke conveying duct before wet desulphurization denitrating system, the flue before neat stress pipeline access point sets flue gas stop valve.This utility model utilizes the sensible heat of the high-temperature flue gas of coke oven to heat neat stress, it is not necessary to other thermal source, energy-conservation while reduce the temperature of high-temperature flue gas, meet the wet desulphurization denitrating technique temperature requirement to flue gas；Improve the temperature of neat stress simultaneously, solve the hot standby problem of coke oven chimney.
Description
Technical field
This utility model relates to coking production technical field, particularly relates to one and is applicable to smoke-gas wet desulfurization denitrating technique
Coke oven chimney hot-backup system.
Background technology
At present in industries such as electric power, iron and steel, metallurgy, petrochemical industries, to the SO in flue gas2、NOxProcessing tecchnics method many
Plant various.Flue gas desulfurization has dry method, semidry method and wet processing, and wherein wet desulfurizing process method includes calcium method, ammonia process, double alkali
Method, magnesium processes, seawater method etc..Mainstream technology selective catalysis reduction (SCR) and the SNCR of denitrating flue gas
(SNCR) technique.Additionally, the Technology of also simultaneous SO_2 and NO removal, as used organic catalyst to the SO in flue gas2、NOxWith
Time removing method etc..
Coking field at home and abroad, the desulphurization denitration technology for coke oven flue gas is constantly in development, technical method
A lot, but be difficult to stable operation always.On November 6th, 2015, by Zhongye Coke Resistance Engineering Technology Co., Ltd's design supply of material
Baosteel Zhanjiang iron and steel coking project cock-oven gas purifying facility formally put into operation, indicate that world head overlaps coke oven flue gas low-temp desulfurization
Denitration industrialization demonstration plant is formally born.This device uses " dry/semi-dry desulphurization+low-temperature denitration dedusting Thermal desorption one
Body technology and technique ", in purification process, smoke temperature drop is less, and neat stress directly enters coke oven smoke stack emission.
But, when coke oven flue gas uses wet processing desulphurization denitration, it may appear that new problem.All employing wet treatments
The technique of flue gas, owing to using the absorbent of liquid that flue gas is circulated sprinkling washing, a common feature is, absorption tower
After neat stress be substantially at saturation, and temperature is general the most relatively low (50～65 DEG C).
It is annual uninterrupted operation continuously that coke oven produces, and produces to not affect coke oven, smoke-gas wet desulfurization denitrification apparatus
Once scram or shut-down (breakdown) mainteance, the necessary toggle path at once of coke oven flue gas is by coke oven smoke stack emission.Therefore coke oven flue gas warp
It is required to return to coke oven chimney after crossing wet method desulphurization denitration, makes coke oven chimney be in hot standby state all the time.The hot standby temperature of coke oven chimney
Degree is relevant with the factor such as dew point temperature of chimney height, the weather conditions of locality and flue gas, the hot standby temperature one of coke oven chimney
As should be higher than that 100 DEG C.Therefore, when coke oven flue gas uses wet method to carry out desulphurization denitration, coke oven chimney first it is faced with the most hot standby
Problem.
Summary of the invention
This utility model provides a kind of coke oven chimney hot-backup system being applicable to smoke-gas wet desulfurization denitrating technique, utilizes
Coke oven come high-temperature flue gas sensible heat to neat stress heat, it is not necessary to other thermal source, energy-conservation while reduce high-temperature flue gas
Temperature, meets the wet desulphurization denitrating technique temperature requirement to flue gas；Improve the temperature of neat stress simultaneously, solve coke oven cigarette
The hot standby problem of chimney.
In order to achieve the above object, this utility model realizes by the following technical solutions:
A kind of coke oven chimney hot-backup system being applicable to smoke-gas wet desulfurization denitrating technique, including coke oven, coke oven chimney and
Wet desulphurization denitrating system, sets between coke oven and coke oven chimney that flue, coke oven and wet desulphurization are de-to be included setting cigarette between nitre system
Letter shoot road, the neat stress pipeline drawn from wet desulphurization denitrating system connects flue；Also include gas-gas heat exchanger and supercharging
Blower fan, the flue gas that described smoke conveying duct connects wet desulphurization denitrating system by the medium loop one of gas-gas heat exchanger enters
Mouthful, described neat stress pipeline connects flue by the medium loop two of gas-gas heat exchanger；Flue gas before wet desulphurization denitrating system
Set booster fan on conveyance conduit, the flue before neat stress pipeline access point sets flue gas stop valve.
Described gas-gas heat exchanger is rotary type heat exchanger GGH or heat medium water flue gas heat-exchange unit MGGH.
It is provided with absorption tower in described wet desulphurization denitrating system, is provided with absorbing liquid circulation flusher in absorption tower, absorbs
Tower top is provided with catches mist layer.
Compared with prior art, the beneficial effects of the utility model are:
1) when coke oven flue gas uses wet desulphurization denitration, it is possible to keep coke oven chimney to be in hot standby state all the time；
2) utilize coke oven high-temperature flue gas sensible heat to neat stress heat, it is not necessary to other thermal source, energy-conservation while drop
The low temperature of high-temperature flue gas, meets the wet desulphurization denitrating technique temperature requirement to flue gas；
3) do not affect coke oven normally to produce, and technological process is simple, flexible and convenient operation；
4) newly-built coke-oven plant system for cleaning fume or the transformation of old coke-oven plant system for cleaning fume it are applicable to
Upgrading.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1. coke oven 2. gas-gas heat exchanger 3. booster fan 4. wet desulphurization denitrating system 5. coke oven chimney 6.
Flue gas stop valve
Detailed description of the invention
Below in conjunction with the accompanying drawings detailed description of the invention of the present utility model is described further:
Seeing Fig. 1, be structural representation of the present utility model, one described in the utility model is applicable to smoke-gas wet desulfurization and takes off
The coke oven chimney hot-backup system of nitre technique, including coke oven 1, coke oven chimney 5 and wet desulphurization denitrating system 4, coke oven 1 and coke oven cigarette
Set flue between chimney 5, between coke oven 1 and wet desulphurization denitrating system 4, set smoke conveying duct, from wet desulphurization denitrating system 4
The neat stress pipeline drawn connects flue；Also including gas-gas heat exchanger 2 and booster fan 3, described smoke conveying duct passes through gas
The medium loop one of gas heat exchanger 2 connects the smoke inlet of wet desulphurization denitrating system 4, and described neat stress pipeline is changed by gas gas
The medium loop two of hot device 2 connects gas flue；Booster fan 3 is set, only on smoke conveying duct before wet desulphurization denitrating system 4
Flue gas stop valve 6 is set on the flue in (flow of flue gas direction) before flue access point.
Described gas-gas heat exchanger 2 is rotary type heat exchanger GGH or heat medium water flue gas heat-exchange unit MGGH.
It is provided with absorption tower in described wet desulphurization denitrating system 4, is provided with absorbing liquid circulation flusher in absorption tower, absorbs
Tower top is provided with catches mist layer.
The flue gas drawn by coke oven 1, temperature is about 180～280 DEG C, when normally working, closes coke oven 1 to coke oven chimney 5
Between flue gas stop valve 6 on flue.Flue gas enters gas-gas heat exchanger 2 by smoke conveying duct, and from wet desulphurization denitration
The neat stress that system 4 is drawn carries out heat exchange, and flue-gas temperature is reduced to 115～135 DEG C, then sends into wet after intensified blower fan 3 pressurization
Method system for desulfuration and denitration 4.
Wet desulphurization denitrating system 4 include can the organic catalyst method of simultaneous SO_2 and NO removal, and for desulfurization calcium method,
The wet processings such as Dual alkali, ammonia process, magnesium processes, seawater method, their common trait is, is provided with absorption tower in system, in absorption tower
Use absorbing liquid that flue gas recirculation is sprayed.
In wet desulphurization denitrating system 4 through absorbing liquid circulation spray, purify after neat stress, catch mist through top, absorption tower
After layer catches mist, discharge from tower top, temperature about 50～65 DEG C.Neat stress enters gas-gas heat exchanger 2, with the height in smoke conveying duct
Temperature flue gas heat exchange is warming up to 100～150 DEG C, then through coke oven chimney 5 qualified discharge.
Gas-gas heat exchanger 2 can use but be not limited to the difference such as rotary type heat exchanger GGH or heat medium water flue gas heat-exchange unit MGGH
The heat exchanger of form.
Booster fan 3 provides power for the conveying for coke oven flue gas.
Flue gas stop valve 6 is as the bypass valve of wet desulphurization denitrating system 4.
When the flue-gas temperature drawn from coke oven 1 is 180～280 DEG C, through heat Balance Calculation, gas-gas heat exchanger 2 is used to change
Heat, can guarantee that the neat stress temperature going to coke oven chimney 5 is more than 100 DEG C, it is possible to meet the hot standby requirement of coke oven chimney 5.
The above, only this utility model preferably detailed description of the invention, but protection domain of the present utility model is not
Being confined to this, any those familiar with the art is in the technical scope that this utility model discloses, according to this practicality
Novel technical scheme and conceive equivalent or change in addition, all should contain within protection domain of the present utility model.
Claims (3)
1. it is applicable to a coke oven chimney hot-backup system for smoke-gas wet desulfurization denitrating technique, including coke oven, coke oven chimney and wet
Method system for desulfuration and denitration, sets between coke oven and coke oven chimney that flue, coke oven and wet desulphurization are de-to be included setting flue gas between nitre system
Conveyance conduit, the neat stress pipeline drawn from wet desulphurization denitrating system connects flue；It is characterized in that, also include gas-gas heat exchange
Device and booster fan, described smoke conveying duct connects wet desulphurization denitrating system by the medium loop one of gas-gas heat exchanger
Smoke inlet, described neat stress pipeline connects flue by the medium loop two of gas-gas heat exchanger；Before wet desulphurization denitrating system
Smoke conveying duct on set booster fan, the flue before neat stress pipeline access point sets flue gas stop valve.
A kind of coke oven chimney hot-backup system being applicable to smoke-gas wet desulfurization denitrating technique the most according to claim 1, its
Being characterised by, described gas-gas heat exchanger is rotary type heat exchanger GGH or heat medium water flue gas heat-exchange unit MGGH.
A kind of coke oven chimney hot-backup system being applicable to smoke-gas wet desulfurization denitrating technique the most according to claim 1, its
It is characterised by, in described wet desulphurization denitrating system, is provided with absorption tower, be provided with absorbing liquid circulation flusher in absorption tower, absorb
Tower top is provided with catches mist layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620479180.0U CN205760555U (en) | 2016-05-24 | 2016-05-24 | A kind of coke oven chimney hot-backup system being applicable to smoke-gas wet desulfurization denitrating technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620479180.0U CN205760555U (en) | 2016-05-24 | 2016-05-24 | A kind of coke oven chimney hot-backup system being applicable to smoke-gas wet desulfurization denitrating technique |
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| CN205760555U true CN205760555U (en) | 2016-12-07 |
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| CN201620479180.0U Active CN205760555U (en) | 2016-05-24 | 2016-05-24 | A kind of coke oven chimney hot-backup system being applicable to smoke-gas wet desulfurization denitrating technique |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107570008A (en) * | 2017-10-26 | 2018-01-12 | 成都中祥天宇环保科技有限公司 | A kind of desulphurization system suitable for coking flue gas |
| CN109443017A (en) * | 2018-09-30 | 2019-03-08 | 株洲醴陵旗滨玻璃有限公司 | Smoke processing system and its operation method |
-
2016
- 2016-05-24 CN CN201620479180.0U patent/CN205760555U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107570008A (en) * | 2017-10-26 | 2018-01-12 | 成都中祥天宇环保科技有限公司 | A kind of desulphurization system suitable for coking flue gas |
| CN109443017A (en) * | 2018-09-30 | 2019-03-08 | 株洲醴陵旗滨玻璃有限公司 | Smoke processing system and its operation method |
| CN109443017B (en) * | 2018-09-30 | 2024-04-09 | 株洲醴陵旗滨玻璃有限公司 | Flue gas treatment system and operation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180727 Address after: 116085 128 high energy street, Qixian Ling high tech Industrial Park, Dalian, Liaoning Patentee after: ACRE Coking And Refractory (Dalian) Engineering Consulting Corp., MCC Address before: 116085 128 high energy street, Qixian Ling high tech Industrial Park, Dalian, Liaoning Patentee before: ACRE Coking and Refractory Engineering Consulting Corporation, MCC |
|
| TR01 | Transfer of patent right |