CN104250669A - Blast furnace slag flushing steam waste heat recycling method and system - Google Patents
Blast furnace slag flushing steam waste heat recycling method and system Download PDFInfo
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- CN104250669A CN104250669A CN201310262753.5A CN201310262753A CN104250669A CN 104250669 A CN104250669 A CN 104250669A CN 201310262753 A CN201310262753 A CN 201310262753A CN 104250669 A CN104250669 A CN 104250669A
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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
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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Abstract
The invention discloses a blast furnace slag flushing steam waste heat recycling method and system. The system is composed of a slag flushing steam induced draft fan, a hot water tank, spray nozzles, a high-temperature water pump, a heat exchanger, a low-temperature water pump, a heat consumer and a pipeline of the heat consumer, and is characterized in that the slag flushing steam induced draft fan is connected with a slag flushing steam chimney and the hot water tank, the spray nozzles are arranged on the upper side of the interior of the hot water tank, the high-temperature water pump is connected with the hot water tank and an inlet at one side of the heat exchanger, an outlet at the corresponding side of the heat exchanger is connected with a condensed water low-temperature pipeline, the low-temperature water pump is connected with the heat consumer and an inlet at the other side of the heat exchanger, and an outlet at the corresponding side of the heat exchanger is connected with the heat consumer. The slag flushing steam is liquidized into high-temperature condensed water through low-temperature condensed water sprayed from the spray nozzles, and the high-temperature condensed water enters the heat exchanger to exchange heat with water used by the heat consumer to recycle heat; not only is the heat of the slag flushing steam recycled, but also heat pollution is reduced, a factory appearance is improved, the maintenance quantity of main and accessory equipment of a blast furnace is reduced, and considerable environmental and economical benefits are achieved.
Description
Technical field
The present invention relates to heat recovery, particularly relate to blast furnace in metallurgical industry steam of flushing cinder exhaust heat recovering method and system.
Background technology
Steel Plant are in blast furnace iron-making process, produce the high temperature furnace slag of 1400 degree of-1500 degree, current China blast furnace slag treating process mainly Water Quenching Slag technology mode, in shrend process, a large amount of steam can be produced, this part steam is discharged to air through chimney, both the waste of the energy had been caused, again thermal pollution is caused to environment, the Chang Rong factory looks of Steel Plant are affected, in addition, containing discharges such as a large amount of hydrogen sulfide, sulfurous gas, slag wool in blast furnace slag flushing steam, serious corrosion and corrosion are caused to blast furnace main equipment and blast furnace auxiliary facility.
Summary of the invention
In order to solve the problem, the invention provides a kind of blast furnace slag flushing steam heat recovery method and system, fully effectively recycling the waste heat of steam of flushing cinder, reduce the discharge of blast furnace slag flushing steam.
For achieving the above object, the present invention takes following technical scheme.
Blast furnace slag flushing steam heat recovery system is by steam of flushing cinder induced draft fan, hot well tank, nozzle, high-temperature water pump, interchanger, low temperature water pump and heat user and pipeline composition thereof, the import of steam of flushing cinder induced draft fan is connected with steam of flushing cinder chimney through steam-pipe, the outlet of steam of flushing cinder induced draft fan is connected with hot well tank through steam-pipe, nozzle is placed in hot well tank inner upper, and be arranged on the water of condensation cryogenic piping of connection hot well tank, hot well tank is connected with high-temperature water pump entrance through water of condensation high-temperature pipe, high-temperature water pump outlet is connected with a side entrance of interchanger through water of condensation high-temperature pipe, the outlet of the corresponding side of interchanger is connected with water of condensation cryogenic piping, heat user is connected with low temperature water pump entrance through heat user cryogenic piping, low temperature water pump outlet is connected with the opposite side entrance of interchanger through water of condensation cryogenic piping, the corresponding side outlet of interchanger is connected with heat user through heat user high-temperature pipe.
Blast furnace slag flushing steam heat recovery method: the blast furnace slag flushing steam in steam of flushing cinder chimney is through the effect of steam of flushing cinder induced draft fan, hot well tank is entered through steam-pipe, blast furnace slag flushing steam transient liquefaction is become high-temperature condensation water by the nozzle ejection cryogenic condensation water of hot well tank inner upper, the high-temperature condensation water of post liquefaction pressurizes through high-temperature water pump, enter after interchanger carries out thermal exchange with the heat user water pressurizeed through low temperature water pump and become cryogenic condensation water, this part cryogenic condensation water gets back to hot well tank through water of condensation cryogenic piping, by nozzle spray blast furnace slag flushing steam, with this recycle, heat user water is become high-temperature water and is used by heat user high-temperature pipe heat supply user after heat exchange.
Blast furnace slag flushing steam heat recovery method and system provided by the invention, not only recycle the heat of blast furnace slag flushing steam, and decreased thermal pollution, improve Chang Rong factory looks, decrease the maintenance of blast furnace main equipment and blast furnace auxiliary facility, there is considerable environmental benefit and economic benefit.
Accompanying drawing explanation
Fig. 1 is blast furnace slag flushing steam heat recovery system schematic of the present invention.
Shown in figure: 1, steam of flushing cinder chimney; 2, steam of flushing cinder induced draft fan; 3, steam-pipe; 4, hot well tank; 5, nozzle: 6, water of condensation high-temperature pipe; 7, water of condensation cryogenic piping; 8, high-temperature water pump; 9, interchanger; 10, heat user cryogenic piping; 11, low temperature water pump; 12, heat user; 13, heat user high-temperature pipe.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
Blast furnace slag flushing steam heat recovery system is by steam of flushing cinder induced draft fan 2, hot well tank 4, nozzle 5, high-temperature water pump 8, interchanger 9, low temperature water pump 11 and heat user 12 and pipeline composition thereof, steam of flushing cinder induced draft fan 2 import is connected with steam of flushing cinder chimney 1 through steam-pipe 3, steam of flushing cinder induced draft fan 2 exports and is connected with hot well tank 4 through steam-pipe 3, nozzle 5 is placed in hot well tank 4 inner upper, and be arranged on the water of condensation cryogenic piping 7 of connection hot well tank 4, hot well tank 4 is connected with high-temperature water pump 8 entrance through water of condensation high-temperature pipe 6, high-temperature water pump 8 exports and is connected with a side entrance of interchanger 9 through water of condensation high-temperature pipe 6, the outlet of the corresponding side of interchanger 9 is connected with water of condensation cryogenic piping 7, heat user 12 is connected with low temperature water pump 11 entrance through heat user cryogenic piping 10, low temperature water pump 11 exports and is connected with the opposite side entrance of interchanger 9 through water of condensation cryogenic piping 10, the corresponding side outlet of interchanger 9 is connected with heat user 12 through heat user high-temperature pipe 13.
Blast furnace slag flushing steam in steam of flushing cinder chimney 1 acts on through steam of flushing cinder induced draft fan 2, hot well tank 4 is entered through steam-pipe 3, the nozzle 5 of hot well tank 4 inner upper sprays cryogenic condensation water and blast furnace slag flushing steam transient liquefaction is become high-temperature condensation water, the high-temperature condensation water of post liquefaction pressurizes through high-temperature water pump 8, enter after interchanger 9 carries out thermal exchange with the heat user water pressurizeed through low temperature water pump 11 and become cryogenic condensation water, this part cryogenic condensation water gets back to hot well tank 4 through water of condensation cryogenic piping 7, blast furnace slag flushing steam is sprayed by nozzle 5, with this recycle, heat user water is become high-temperature water and is used by heat user high-temperature pipe 13 heat supply user 12 after heat exchange.
It is to be noted; the above is the schematic embodiment of the present invention; be not limited to the technical solution, the equivalent variations that any those of ordinary skill in the art do the technology of the present invention feature or corresponding improvement, still within protection scope of the present invention.
Claims (2)
1. blast furnace slag flushing steam heat recovery system is by steam of flushing cinder induced draft fan, hot well tank, nozzle, high-temperature water pump, interchanger, low temperature water pump and heat user and pipeline composition thereof, it is characterized in that: the import of steam of flushing cinder induced draft fan is connected with steam of flushing cinder chimney through steam-pipe, the outlet of steam of flushing cinder induced draft fan is connected with hot well tank through steam-pipe, nozzle is placed in hot well tank inner upper, and be arranged on the water of condensation cryogenic piping of connection hot well tank, hot well tank is connected with high-temperature water pump entrance through water of condensation high-temperature pipe, high-temperature water pump outlet is connected with a side entrance of interchanger through water of condensation high-temperature pipe, the outlet of the corresponding side of interchanger is connected with water of condensation cryogenic piping, heat user is connected with low temperature water pump entrance through heat user cryogenic piping, low temperature water pump outlet is connected with the opposite side entrance of interchanger through water of condensation cryogenic piping, the corresponding side outlet of interchanger is connected with heat user through heat user high-temperature pipe.
2. blast furnace slag flushing steam heat recovery method, it is characterized in that: the blast furnace slag flushing steam in steam of flushing cinder chimney is through the effect of steam of flushing cinder induced draft fan, hot well tank is entered through steam-pipe, blast furnace slag flushing steam transient liquefaction is become high-temperature condensation water by the nozzle ejection cryogenic condensation water of hot well tank inner upper, the high-temperature condensation water of post liquefaction pressurizes through high-temperature water pump, enter after interchanger carries out thermal exchange with the heat user water pressurizeed through low temperature water pump and become cryogenic condensation water, this part cryogenic condensation water gets back to hot well tank through water of condensation cryogenic piping, by nozzle spray blast furnace slag flushing steam, with this recycle, heat user water is become high-temperature water and is used by heat user high-temperature pipe heat supply user after heat exchange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310262753.5A CN104250669A (en) | 2013-06-28 | 2013-06-28 | Blast furnace slag flushing steam waste heat recycling method and system |
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| CN201310262753.5A CN104250669A (en) | 2013-06-28 | 2013-06-28 | Blast furnace slag flushing steam waste heat recycling method and system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106643203A (en) * | 2017-01-13 | 2017-05-10 | 沈阳绿色环保能源科技有限公司 | High-efficiency steam-water heat exchange device and heat exchange method |
| CN109865404A (en) * | 2017-12-02 | 2019-06-11 | 哈尔滨工大金涛科技股份有限公司 | Slag steam dehumidifying of quenching disappears whitening method and device |
| CN110145945A (en) * | 2019-04-16 | 2019-08-20 | 浙江菲达环保科技股份有限公司 | A kind of blast furnace slag flushing steam based on residual heat heating disappears white system and method |
| CN110157843A (en) * | 2019-06-11 | 2019-08-23 | 成渝钒钛科技有限公司 | A kind of continuous reclaimer of blast furnace slag quenching water thermal energy |
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| CN101792830A (en) * | 2010-01-26 | 2010-08-04 | 北京首钢国际工程技术有限公司 | Method and device for collecting steam of flushing cinder and afterheat of hot water in iron-making blast furnace |
| CN102787187A (en) * | 2012-08-31 | 2012-11-21 | 上海宝钢节能技术有限公司 | System and method for generating power with blast-furnace slag washing water and exhaust steam low-temperature waste heat |
| CN202626213U (en) * | 2012-07-04 | 2012-12-26 | 中冶赛迪工程技术股份有限公司 | Device for generating hot water by using waste heat of blast furnace slag |
| CN203382775U (en) * | 2013-06-28 | 2014-01-08 | 北京亿玮坤节能科技有限公司 | Blast furnace flushing slag steam waste heat recycling system |
-
2013
- 2013-06-28 CN CN201310262753.5A patent/CN104250669A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101792830A (en) * | 2010-01-26 | 2010-08-04 | 北京首钢国际工程技术有限公司 | Method and device for collecting steam of flushing cinder and afterheat of hot water in iron-making blast furnace |
| CN202626213U (en) * | 2012-07-04 | 2012-12-26 | 中冶赛迪工程技术股份有限公司 | Device for generating hot water by using waste heat of blast furnace slag |
| CN102787187A (en) * | 2012-08-31 | 2012-11-21 | 上海宝钢节能技术有限公司 | System and method for generating power with blast-furnace slag washing water and exhaust steam low-temperature waste heat |
| CN203382775U (en) * | 2013-06-28 | 2014-01-08 | 北京亿玮坤节能科技有限公司 | Blast furnace flushing slag steam waste heat recycling system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106643203A (en) * | 2017-01-13 | 2017-05-10 | 沈阳绿色环保能源科技有限公司 | High-efficiency steam-water heat exchange device and heat exchange method |
| CN109865404A (en) * | 2017-12-02 | 2019-06-11 | 哈尔滨工大金涛科技股份有限公司 | Slag steam dehumidifying of quenching disappears whitening method and device |
| CN110145945A (en) * | 2019-04-16 | 2019-08-20 | 浙江菲达环保科技股份有限公司 | A kind of blast furnace slag flushing steam based on residual heat heating disappears white system and method |
| CN110157843A (en) * | 2019-06-11 | 2019-08-23 | 成渝钒钛科技有限公司 | A kind of continuous reclaimer of blast furnace slag quenching water thermal energy |
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Application publication date: 20141231 |