CN206580852U - A kind of converter gas waste heat depth recovery system - Google Patents
A kind of converter gas waste heat depth recovery system Download PDFInfo
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- CN206580852U CN206580852U CN201720138963.7U CN201720138963U CN206580852U CN 206580852 U CN206580852 U CN 206580852U CN 201720138963 U CN201720138963 U CN 201720138963U CN 206580852 U CN206580852 U CN 206580852U
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- flue
- waste
- mars
- heat
- heat recovery
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The utility model discloses a kind of converter gas waste heat depth recovery system, including gasification cooling flue, adiabatic flue, Mars capturing device, waste-heat recovery device and refined dedusting device, the entrance of the gasification cooling flue is connected with the exhanst gas outlet of converter, the outlet of gasification cooling flue is connected with the entrance of adiabatic flue, the outlet of adiabatic flue is connected with the entrance of Mars capturing device, the exhanst gas outlet of Mars capturing device is connected with the entrance of waste-heat recovery device, and the outlet of waste-heat recovery device is connected with refined dedusting device.The beneficial effects of the utility model are：By the high-temperature residual heat of gasification cooling flue recovered flue gas, then by the middle-low temperature heat of waste-heat recovery device recovered flue gas, realize that the depth of fume afterheat is reclaimed；Flue-gas temperature is down to after 800 ~ 1000 DEG C in gasification cooling flue, the high-temperature smoke particle in flue gas is removed by Mars capturing device, so as to remove the incendiary source in gas explosion three elements, it is to avoid explosion danger occurs for follow-up waste heat recovery process.
Description
Technical field
The utility model is related to converter gas waste heat recovery apparatus and technique, and in particular to a kind of converter gas waste heat depth
Recovery system.
Background technology
During Converter Oxigen Blowing is smelted, the substantial amounts of flue gas containing CO can be produced（Wherein CO content is more than 70%）, this converter
Flue gas is a kind of recovery value very high middle calorific value of gas.In addition to chemical heat, converter gas also includes significant portion of sensible heat, entirely
Equivalent to 8 ~ 10 kilograms mark coal/ton steel of portion's sensible heat.
In current oxygen top-blown converter, converter gas purification recovery process mainly has two kinds of wet method and dry method, wherein wet method
The processes such as technique is mainly cooled down by flue gas, purified, coal-gas recovering and sewage disposal are constituted, and its process is：Flue gas is through cooling stack
Into the processing of flue gas purification system water spray（Flue gas purification system includes 2 grades of Venturi tubes, dehydrator and water mist separator）, remove cigarette
Flue dust in gas；Sewage with flue dust is dried to sludge after the processing such as separation, concentration, dehydration, and sludge send sintering plant as burning
Raw material is tied, the coal gas after purification is recycled.Dry process is mainly cooled down by flue gas, Recovery Purifying and dust briquetting this three
Item process is constituted, and its process is：Flue gas enters flue gas purification system through cooling stack（Flue gas purification system by devaporizer and
Cylinder type electric cleaner is constituted）, after being exchanged heat by devaporizer, flue-gas temperature is down to 180~200 DEG C；Flue gas is entered simultaneously
Row modifier treatment, reduces the resistivity of flue dust, collects coarse powder dirt；Flue gas after bulk processing enters cylinder type electric cleaner, enters
One step is purified, and its dust-laden mass concentration is down to below 10mg/m3, so as to reach off-gas recovery standard.
Wet method and dry process technique be based on gas recovery, it is but not thorough to the waste heat recovery of flue gas.If energy
Enough recycle out 800 ~ 1000 DEG C of fume afterheats after gasification cooling flue, you can increase waste heat recovery volume, reduce water and steam
Consumption, with significant economic benefit and social benefit.But, reclaim the possibility that whole converter gas waste heats have blast
Property, because the three elements exploded during converter gas waste heat recovery are readily obtained satisfaction：（1）The interrupted production of converter makes
Flue gas has been mixed into a certain amount of air in the beginning and end stage of steel-making, it is easy to mixed gas is reached explosion limit；（2）
Flue gas can be cooled to below self-ignition point in the waste heat boiler of recovery waste heat；（3）High-temperature smoke particle in flue gas is to trigger quick-fried
Fried important incendiary source.Therefore, how safely depth reclaims whole waste heats of converter gas, is metallurgy industry energy-saving and emission-reduction work
The important topic of work.
The content of the invention
The purpose of this utility model is, there is provided more than a kind of safe and reliable converter gas in view of the shortcomings of the prior art
Hot depth recovery system.
The technical solution adopted in the utility model is：A kind of converter gas waste heat depth recovery system, including Vaporizing cooling
Flue, adiabatic flue, Mars capturing device, waste-heat recovery device and refined dedusting device, the entrance of the gasification cooling flue with
The exhanst gas outlet connection of converter, the outlet of gasification cooling flue is connected with the entrance of adiabatic flue, outlet and the fire of adiabatic flue
The entrance connection of star capturing device, the exhanst gas outlet of Mars capturing device is connected with the entrance of waste-heat recovery device, waste heat recovery
The outlet of device is connected with refined dedusting device.
By such scheme, the Mars capturing device includes double medium atomization nozzles and multicyclone, double media
Atomizer is installed in multicyclone porch.
By such scheme, the atomizing medium of described pair of medium atomization nozzle is nitrogen or steam, and water droplets particle diameter exists
Below 0.2mm.
By such scheme, junction, Mars capturing device and the waste heat recovery of the adiabatic flue and Mars capturing device
The junction of device is respectively sealed using water seal or nitrogen.
By such scheme, the side wall upper part of the Mars capturing device and waste-heat recovery device is respectively provided with explosion proof door.
By such scheme, the bottom of the waste-heat recovery device is provided with ash bucket.
By such scheme, the lower sidewall of the waste-heat recovery device is provided with multiple relief valves.
By such scheme, waste-heat recovery device is composed in series by multigroup convection recuperator.
The beneficial effects of the utility model are：
（1）By the high-temperature residual heat of gasification cooling flue recovered flue gas, then pass through waste-heat recovery device recovered flue gas
Middle-low temperature heat, realizes that the depth of fume afterheat is reclaimed；
（2）To ensure the safe and stable operation of residual neat recovering system, flue-gas temperature is down to 800 in gasification cooling flue ~
After 1000 DEG C, the high-temperature smoke particle in flue gas is removed by Mars capturing device, so as to remove in gas explosion three elements
Incendiary source, it is to avoid explosion danger occurs for follow-up waste heat recovery process；
（3）Mars capturing device and waste-heat recovery device top are provided with explosion proof door, and waste-heat recovery device bottom is provided with multiple
Relief valve, when exploding generation, gases at high pressure are released by explosion proof door, relief valve, it is ensured that the safety of system.
Brief description of the drawings
Fig. 1 is the structural representation of one specific embodiment of the utility model.
Wherein：1st, gasification cooling flue；2nd, adiabatic flue；3rd, Mars capturing device；3.1st, double medium atomization nozzles；3.2、
Multicyclone；4th, waste-heat recovery device；5 refined dedusting devices；6th, ash bucket；7th, converter.
Embodiment
In order to more fully understand the utility model, further is made to the utility model with specific embodiment below in conjunction with the accompanying drawings
Ground is described.
A kind of converter gas waste heat depth recovery system as shown in Figure 1, including gasification cooling flue 1, adiabatic flue 2,
Mars capturing device 3, waste-heat recovery device 4 and refined dedusting device 5, the entrance of the gasification cooling flue 1 and the flue gas of converter 7
Outlet, the outlet of gasification cooling flue 1 is connected with the entrance of adiabatic flue 2, and the outlet of adiabatic flue 2 is trapped with Mars to be filled
The entrance for putting 3 is connected, and the exhanst gas outlet of Mars capturing device 3 is connected with the entrance of waste-heat recovery device 4, waste-heat recovery device 4
Outlet be connected with refined dedusting device 5.
Mars capturing device 3 includes double medium atomization nozzles 3.1 and multicyclone 3.2, double medium atomization nozzles
3.1 install at multicyclone entrance 3.2.The atomizing medium of double medium atomization nozzles 3.1 is nitrogen or steam, atomization
The particle diameter of water droplet is in below 0.2mm.The rapid gasification in high-temperature flue gas of the fine liquid particles of high-pressure atomization becomes vapor, vapor
The dust granules in flue gas are moistened, promotes soot dust granule to collide easily and reunites " growing up ", form bulky grain flue dust.Efficiently
The bottom of multicyclone 3.2 is provided with ash bucket, is sealed using high temperature unloading valve.Multicyclone 3.2 is to bulky grain
Flue dust has higher arresting efficiency, and the bulky grain flue dust in flue gas can be removed substantially.
In the utility model, junction, Mars capturing device 3 and the waste heat recovery of adiabatic flue 2 and Mars capturing device 3
The junction of device 4 is respectively sealed using water seal or nitrogen, to ensure the sealing of system and play pressure in system overpressure
The effect released.The side wall upper part of the Mars capturing device 3 and the side wall upper part of waste-heat recovery device 4 are respectively provided with explosion-proof
Door, the multiple relief valves of lower sidewall of waste-heat recovery device 4, when blast occurs, the gases at high pressure of generation can by explosion proof door and
Relief valve is released, it is ensured that system safety.In the bottom of Mars capturing device 3, waste-heat recovery device 4 and refined dedusting device 5
Respectively it is provided with ash bucket 6；Waste-heat recovery device 4 is composed in series by multigroup convection recuperator.
A kind of converter gas waste heat depth recovery method, comprises the following steps：
Step 1: providing converter gas waste heat depth recovery system as described above；
Step 2: will go out the flue gas of converter 7 introduces gasification cooling flue 1 through petticoat pipe, flue gas from converter mouth with sucking
Air is in the reinforcing mixing conflagration of gasification cooling flue 1, after exchanging heat via radiation（Changing thermogenetic heat is used to heat water and produce
Raw saturated steam）, flue-gas temperature is down to 800 ~ 1000 DEG C；
Step 3: the flue gas in gasification cooling flue 1 is introduced into Mars capturing device 3 through adiabatic flue 2；Flue gas is in Mars
The porch of capturing device 3 is mixed into multicyclone with water smoke；Multicyclone is to the high temperature cigarette in flue gas
Dirt particle carries out trapping removing；
Step 4: the flue gas in Mars capturing device 3 is introduced into waste-heat recovery device 4, flue gas is in waste-heat recovery device 4
Heat convection（Changing thermogenetic heat is used to heat water and produces saturated steam）, the flue-gas temperature after heat exchange is down to 180 ~
250 DEG C or so；
Step 5: the flue gas after heat exchange is introduced into refined dedusting device 5 from waste-heat recovery device 4 carries out refined dedusting, after dedusting
Flue gas by gas recovering device reclaim or diffuse.
Preferred embodiment of the present utility model is these are only, the utility model is not limited to, for this area
Technical staff for, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle within,
Any modification, equivalent substitution and improvements made etc., should be included within protection domain of the present utility model.
Claims (7)
1. a kind of converter gas waste heat depth recovery system, it is characterised in that including gasification cooling flue, adiabatic flue, Mars
Capturing device, waste-heat recovery device and refined dedusting device, the entrance of the gasification cooling flue are connected with the exhanst gas outlet of converter,
The outlet of gasification cooling flue is connected with the entrance of adiabatic flue, and the outlet of adiabatic flue connects with the entrance of Mars capturing device
Logical, the exhanst gas outlet of Mars capturing device is connected with the entrance of waste-heat recovery device, the outlet and refined dedusting of waste-heat recovery device
Device is connected.
2. converter gas waste heat depth recovery system as claimed in claim 1, it is characterised in that the Mars capturing device bag
Double medium atomization nozzles and multicyclone are included, double medium atomization nozzles are installed in multicyclone porch.
3. converter gas waste heat depth recovery system as claimed in claim 2, it is characterised in that described pair of medium atomization nozzle
Atomizing medium be nitrogen or steam, water droplets particle diameter is in below 0.2mm.
4. converter gas waste heat depth recovery system as claimed in claim 1, it is characterised in that the adiabatic flue and Mars
The junction of the junction of capturing device, Mars capturing device and waste-heat recovery device is respectively sealed using water seal or nitrogen.
5. converter gas waste heat depth recovery system as claimed in claim 1, it is characterised in that the Mars capturing device
Side wall upper part and the side wall upper part of waste-heat recovery device are respectively provided with explosion proof door.
6. converter gas waste heat depth recovery system as claimed in claim 1, it is characterised in that the waste-heat recovery device
Lower sidewall is provided with multiple relief valves, and the bottom of waste-heat recovery device is provided with ash bucket.
7. converter gas waste heat depth recovery system as claimed in claim 1, it is characterised in that waste-heat recovery device is by multigroup
Convection recuperator is composed in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720138963.7U CN206580852U (en) | 2017-02-15 | 2017-02-15 | A kind of converter gas waste heat depth recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720138963.7U CN206580852U (en) | 2017-02-15 | 2017-02-15 | A kind of converter gas waste heat depth recovery system |
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| Publication Number | Publication Date |
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| CN206580852U true CN206580852U (en) | 2017-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720138963.7U Active CN206580852U (en) | 2017-02-15 | 2017-02-15 | A kind of converter gas waste heat depth recovery system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108660281A (en) * | 2018-07-12 | 2018-10-16 | 北京京诚科林环保科技有限公司 | A kind of kindling material capturing device |
| CN109338030A (en) * | 2018-11-30 | 2019-02-15 | 中冶南方工程技术有限公司 | A kind of converter gas dedusting and residual neat recovering system and method |
-
2017
- 2017-02-15 CN CN201720138963.7U patent/CN206580852U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108660281A (en) * | 2018-07-12 | 2018-10-16 | 北京京诚科林环保科技有限公司 | A kind of kindling material capturing device |
| CN109338030A (en) * | 2018-11-30 | 2019-02-15 | 中冶南方工程技术有限公司 | A kind of converter gas dedusting and residual neat recovering system and method |
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