CN104818358A - Blast furnace water flushing slag steam waste heat recycling process - Google Patents
Blast furnace water flushing slag steam waste heat recycling process Download PDFInfo
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- CN104818358A CN104818358A CN201510159232.6A CN201510159232A CN104818358A CN 104818358 A CN104818358 A CN 104818358A CN 201510159232 A CN201510159232 A CN 201510159232A CN 104818358 A CN104818358 A CN 104818358A
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- blast furnace
- heat
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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 invention relates to a blast furnace water flushing slag system steam waste heat recycling process, and belongs to the technical field of blast furnace flushing slag. The process specifically comprises that: a heat exchange circulation pump is started, low temperature water in a hot water circulation well is circulated through a corrosion resistance vapor water heat exchange pipe and then returns to the hot water circulation well, an electric butterfly valve is started when the water temperature is higher than 80 DEG C, the hot water is transferred to a hot water storage well, and a steam sealing device is arranged in the steam generation area. The process of the present invention has the following advantages that: the low temperature steam heat and the wasted water caused by steam overflowing can be recovered, and advantages of energy saving and consumption reducing can be provided.
Description
Technical field
The invention belongs to blast furnace slag flushing technical field, particularly a kind of blast furnace water slag-flushing steam heat recovery utilizes technique.
Background technology
In blast furnace ironmaking smelting process, the slag temperature of generation is approximately 1500 DEG C, and the high velocity flow that this slag is provided by slag-washing-out pump in Punched box is granulated rapidly and is cooled to grain slag fast.The steam of a large amount of 100 DEG C and temperature can be produced at the low-temperature water heating of 80-95 DEG C in this process.In current grain slag production technique, steam is all directly diffuse, and wastes a large amount of heats.And washing slag water is in order to ensure the safe operation of system, be then generally enter cooling tower after sedimentation and filtration, circulate after cooling flushing cinder again.Make so again a part of heat run off in cooling tower, both wasted the energy, and polluted environment again.Blast furnace slag heat recovery technology is subject to the attention of countries in the world day by day, and its main direction of studying is dry Slag treatment method, but due to its produce dry slag temperature high, equipment repair and maintenance difficulty, the waste residue of generation stores nowhere, is not unanimously promoted and applies.And reclaiming because its temperature is lower for the Low Temperature Steam that flush slag produces, heat energy utilization difficulty, also never has new progress.
Summary of the invention
The object of the present invention is to provide a kind of blast furnace water slag-flushing steam heat recovery to utilize technique, solve and reclaim Water ramjet+ loses water yield problem because producing steam.
A kind of blast furnace water slag-flushing steam heat recovery utilizes technique, and concrete technology step is as follows:
1, open recuperated cycle pump 2, the water at low temperature in hot water circulation well 5 is circulated through anticorrosion steam-water heat exchanging pipe 6.
2, water and steam after heat exchange, are back to hot water circulation well 5, move in circles with this in anticorrosion vapor-water heat exchanger 6.
3, when the water temperature in hot water circulation well 5 is higher than 80 DEG C, open electric butterfly valve 4, the hot water in hot water circulation well 5 is transferred to hot water retaining well 3, delivers to boiler house through hot water pump 1 or make other use.
4, steam seal device 7 is set in steam-producing area, steam is sealed, ensure the abundant heat exchange of steam.
Anticorrosion steam-water heat exchanging pipe 6 is concave-convex type heat transfer tube, to increase heat interchanging area.
Recuperated cycle pump 2 and hot water circulation well 5 are for the storage of the circulation and water of reclaiming Water ramjet+.
Hot water pump 1, hot water retaining well 3 and electric butterfly valve 4, use it for anything else for hot water is shifted and seen off.
Reclaim the outer drain region of Water ramjet+ to be all incubated.
The invention has the advantages that: by steam with latent heat by heat transfer tube by water purification heat temperature raising, system produce steam be thoroughly cooled recovery, arrange outward without steam, energy-conserving and environment-protective.
Accompanying drawing explanation
Fig. 1 is process flow sheet of the present invention.Wherein, hot water pump 1, recuperated cycle pump 2, hot water retaining well 3, electric butterfly valve 4, hot water circulation well 5, anticorrosion steam-water heat exchanging pipe 6, steam seal device 7.
Embodiment
Embodiment 1
A kind of blast furnace water slag-flushing steam heat recovery utilizes technique, and concrete technology step is as follows:
1, open recuperated cycle pump 2, the water at low temperature in hot water circulation well 5 is circulated through anticorrosion steam-water heat exchanging pipe 6.
2, water and steam after heat exchange, are back to hot water circulation well 5, move in circles with this in anticorrosion vapor-water heat exchanger 6.
3, when the water temperature in hot water circulation well 5 is 85 DEG C, open electric butterfly valve 4, the hot water in hot water circulation well 5 is transferred to hot water retaining well 3, delivers to boiler house through hot water pump 1.
4, steam seal device 7 is set in steam-producing area, steam is sealed, ensure the abundant heat exchange of steam.
Claims (2)
1. blast furnace water slag-flushing steam heat recovery utilizes a technique, it is characterized in that: concrete technology step is as follows:
1) open recuperated cycle pump (2), the water at low temperature in hot water circulation well (5) is circulated through anticorrosion steam-water heat exchanging pipe (6);
2) water and steam after heat exchange, are back to hot water circulation well (5), move in circles with this in anticorrosion vapor-water heat exchanger (6);
3) when the water temperature in hot water circulation well (5) is higher than 80 DEG C, open electric butterfly valve (4), hot water in hot water circulation well (5) is transferred to hot water retaining well (3), delivers to boiler house through hot water pump (1) or make other use;
4) steam seal device (7) is set in steam-producing area, steam is sealed, ensure the abundant heat exchange of steam.
2. technique according to claim 1, is characterized in that: anticorrosion steam-water heat exchanging pipe (6) is concave-convex type heat transfer tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510159232.6A CN104818358A (en) | 2015-04-06 | 2015-04-06 | Blast furnace water flushing slag steam waste heat recycling process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510159232.6A CN104818358A (en) | 2015-04-06 | 2015-04-06 | Blast furnace water flushing slag steam waste heat recycling process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104818358A true CN104818358A (en) | 2015-08-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510159232.6A Pending CN104818358A (en) | 2015-04-06 | 2015-04-06 | Blast furnace water flushing slag steam waste heat recycling process |
Country Status (1)
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| CN (1) | CN104818358A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201901674U (en) * | 2010-12-08 | 2011-07-20 | 中冶赛迪上海工程技术有限公司 | Waste heat utilizing system for slag quenching water from 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 |
| CN103866058A (en) * | 2014-01-13 | 2014-06-18 | 中冶南方工程技术有限公司 | Triple-generation system for utilizing slag-washing water afterheat by using blast furnace drum method |
| CN203683564U (en) * | 2013-12-17 | 2014-07-02 | 秦冶工程技术(北京)有限责任公司 | Slag flushing water recycling system |
-
2015
- 2015-04-06 CN CN201510159232.6A patent/CN104818358A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201901674U (en) * | 2010-12-08 | 2011-07-20 | 中冶赛迪上海工程技术有限公司 | Waste heat utilizing system for slag quenching water from 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 |
| CN203683564U (en) * | 2013-12-17 | 2014-07-02 | 秦冶工程技术(北京)有限责任公司 | Slag flushing water recycling system |
| CN103866058A (en) * | 2014-01-13 | 2014-06-18 | 中冶南方工程技术有限公司 | Triple-generation system for utilizing slag-washing water afterheat by using blast furnace drum method |
Non-Patent Citations (1)
| Title |
|---|
| 马元武等: "冲渣水余热的夏季利用", 《河北冶金》 * |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150805 |
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| RJ01 | Rejection of invention patent application after publication |