CN103146859B - A kind of blast furnace slag quenching water heating picking process flow system - Google Patents
A kind of blast furnace slag quenching water heating picking process flow system Download PDFInfo
- Publication number
- CN103146859B CN103146859B CN201310106313.0A CN201310106313A CN103146859B CN 103146859 B CN103146859 B CN 103146859B CN 201310106313 A CN201310106313 A CN 201310106313A CN 103146859 B CN103146859 B CN 103146859B
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- CN
- China
- Prior art keywords
- water
- flushing cinder
- cooling tower
- heat exchange
- exchange unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/02—Physical or chemical treatment of slags
- C21B2400/022—Methods of cooling or quenching molten slag
- C21B2400/024—Methods of cooling or quenching molten slag with the direct use of steam or liquid coolants, e.g. water
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/05—Apparatus features
- C21B2400/066—Receptacle features where the slag is treated
- C21B2400/074—Tower structures for cooling, being confined but not sealed
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/08—Treatment of slags originating from iron or steel processes with energy recovery
Abstract
The present invention relates to a kind of for the blast furnace slag quenching water heating picking process flow system with single cover flushing cinder water cooling tower and cooling tower pump flushing cinder water system, comprise and connect single cover flushing cinder water cooling tower the heat exchange unit in parallel with flushing cinder water cooling tower, heat exchange unit intermediate water outlet conduit connect successively intermediate water supply-water pump and peak regulation unit, peak regulation cell end connecting secondary water is for water end (W.E.), heat exchange unit intermediate water inlet channel connecting secondary water backwater end. Heat exchange unit is in parallel with cooling tower, utilize cooling tower pump, and heat-obtaining system does not need to establish slag-washing-out pump; By peak regulation unit according to changing by thermic load, flushing cinder coolant-temperature gage changes, and controls temperature after flushing cinder water heat-obtaining, native system has been realized the full water yield of flushing cinder water heat-obtaining at full capacity, reclaims to greatest extent using exhaust heat of slag flushing water, can be used for heating or other purposes.
Description
Technical field
The present invention relates to a kind of process flow system of blast furnace slag quenching water waste heat recovery, relate in particular to a kind of for the blast furnace slag quenching water heating picking process flow system with single cover flushing cinder water cooling tower and cooling tower pump flushing cinder water system.
Background technology
Blast furnace ironmaking produces a large amount of high-temperature slags, after shrend, produce a large amount of 60～90 DEG C of flushing cinder water, medium and small blast furnace generally comprises a set of flushing cinder water system with flushing cinder water cooling tower and cooling tower pump, flushing cinder water contains solid particle and especially contains a large amount of suspensions, if directly heating meeting is deposited, is stopped up at pipeline, radiator, and indirect heat exchange adopts conventional heat exchanger can stop up equally, cannot use by long period, therefore, for many years using exhaust heat of slag flushing water all less than comprehensively, effective recycling. Aspect technological process, current existing residual neat recovering system, discontinuity, the modern blast furnace that does not substantially the relate to blast furnace slag flushing control requirement of pulp water temperature that liquidates, do not consider yet full water yield heat-obtaining and with original blast furnace technology flow process handover operation problem.
Summary of the invention
Technical problem to be solved by this invention is to overcome the deficiencies in the prior art, provide a kind of and realize full water yield heat-obtaining and with original blast furnace technology flow process handover operation, controlled heat supply, for the blast furnace slag quenching water heating picking process flow system with single cover flushing cinder water cooling tower and cooling tower pump flushing cinder water system.
The present invention is achieved by the following technical programs:
A kind of blast furnace slag quenching water heating picking process flow system, comprise that single cover of blast furnace and blast furnace is with flushing cinder water cooling tower and the cooling tower pump flushing cinder water system of cold rinse bank, connect single cover flushing cinder water cooling tower the single cover heat exchange unit in parallel with flushing cinder water cooling tower, described heat exchange unit intermediate water outlet conduit connect successively intermediate water supply-water pump and peak regulation unit, described peak regulation cell end connecting secondary water is for water end (W.E.), heat exchange unit intermediate water inlet channel connecting secondary water backwater end.
Described heat exchange unit flushing cinder water outlet conduit enters cold rinse bank by the cold rinse bank liquid level upper opening below cooling tower, and opening is near liquid level, and heat exchanger setting height(from bottom) is lower than open height.
Between described single cover flushing cinder water cooling tower and single cover heat exchange unit in parallel, be provided with for switching and the flushing cinder penstock group of adjust flux, described flushing cinder penstock group comprises the flushing cinder penstock of being located at flushing cinder water cooling tower pipeline and being located at heat exchange unit flushing cinder water inlet channel branch road.
Described heat exchange unit, comprises one or more heat exchanger, and described heat exchanger is the heat exchanger of resistance to blocking type.
The described heat exchanger of resistance to blocking type is full-welding plate-type heat exchanger.
Described peak regulation unit comprises one or more heat exchanger.
The invention has the beneficial effects as follows:
System comprises that single cover of blast furnace and blast furnace is with flushing cinder water cooling tower and the cooling tower pump flushing cinder water system of cold rinse bank, connect single cover flushing cinder water cooling tower the single cover heat exchange unit in parallel with flushing cinder water cooling tower, described heat exchange unit intermediate water outlet conduit connect successively intermediate water supply-water pump and peak regulation unit, described peak regulation cell end connecting secondary water is for water end (W.E.), heat exchange unit intermediate water inlet channel connecting secondary water backwater end, heat exchange unit is in parallel with cooling tower, utilize cooling tower pump, and heat-obtaining system does not need to establish slag-washing-out pump; According to changing with thermic load variation, flushing cinder coolant-temperature gage, regulate intermediate water supply water temperature by peak regulation unit, to control intermediate water return water temperature, temperature after realization control flushing cinder water heat-obtaining. Blast furnace slag quenching water heating picking process system of the present invention has realized the full water yield of flushing cinder water heat-obtaining at full capacity, reclaims to greatest extent using exhaust heat of slag flushing water, can be used for heating or other purposes.
Brief description of the drawings
Fig. 1 is process flow diagram of the present invention.
In figure: 1. flushing cinder penstock, 2. heat exchange unit flushing cinder water inlet channel, 3. heat exchange unit flushing cinder water outlet conduit, 4. the heat exchanger of resistance to blocking type, 5. heat exchange unit, 6. heat exchange unit intermediate water inlet channel, 7. heat exchange unit intermediate water outlet conduit, 8. intermediate water graded filter, 9. intermediate water supply-water pump, 10. intermediate water supply-water pump group, 11. heat exchangers, 12. peak regulation unit, 13. small pumps.
Detailed description of the invention
In order to make those skilled in the art understand better technical scheme of the present invention, below in conjunction with accompanying drawing and most preferred embodiment, the present invention is described in further detail.
As shown in the figure, a kind of blast furnace slag quenching water heating picking process of the present invention flow system, comprise that single cover of blast furnace and blast furnace is with flushing cinder water cooling tower and the cooling tower pump flushing cinder water system of cold rinse bank, connect single cover flushing cinder water cooling tower the single cover heat exchange unit 5 in parallel with flushing cinder water cooling tower, described heat exchange unit intermediate water outlet conduit 7 connect successively intermediate water supply-water pump 9 and peak regulation unit 12, described peak regulation cell end connecting secondary water is for water end (W.E.), described heat exchange unit intermediate water inlet channel 6 connecting secondary water backwater ends. The flushing cinder of heat exchange unit described in this example water outlet conduit enters cold rinse bank by the cold rinse bank liquid level upper opening below cooling tower, opening is near liquid level, heat exchanger setting height(from bottom) is lower than open height, utilize cooling tower pump, heat-obtaining system does not need to establish slag-washing-out pump, between described single cover flushing cinder water cooling tower and single cover heat exchange unit in parallel, be provided with for switching and the flushing cinder penstock group of adjust flux, described flushing cinder penstock group comprises the flushing cinder penstock of being located at flushing cinder water cooling tower pipeline and being located at heat exchange unit flushing cinder water inlet channel branch road. By valve, flushing cinder water full dose or part are cut to heating picking process flow process and carried out heat-obtaining, and switchback cooling tower can recover the original technological process of blast furnace, heat exchange unit intermediate water inlet channel 6 is by intermediate water graded filter 8 connecting secondary water backwater ends, the water quality that ensures intermediate water, makes equipment reach good working order.
Heat exchange unit inlet channel 6 is provided with moisturizing bypass and water compensation mechanism. Described water compensation mechanism is made up of the small pump 13 of tank and connection thereof.
In this example, the outlet of intermediate water supply-water pump is communicated with peak regulation unit intermediate water inlet pipeline, the outlet of peak regulation unit intermediate water and heating pipeline or other purposes pipeline communication. The outlet of intermediate water supply-water pump and peak regulation unit intermediate water are imported and exported between pipeline and are provided with switch valve, switch or Flow-rate adjustment for overhauling.
Intermediate water supply-water pump group at least comprises an intermediate water supply-water pump, and in this example, intermediate water supply-water pump 9 is many, after intermediate water supply-water pump group 10 is located at heat exchange unit, can certainly be located at heat exchange unit backwater side before.
Described heat exchange unit 5, comprises one or more heat exchanger, and described heat exchanger is the heat exchanger of resistance to blocking type 4.
The described heat exchanger of resistance to blocking type is full-welding plate-type heat exchanger. The applicant has applied for many moneys full-welding plate-type heat exchanger at present, number of patent application is: 201320097656.0,201320097521.4,201320097650.3, its advantage is that flushing cinder water all can not deposit, stop up in heat exchange runner import department and inside thereof, solve a difficult problem for flushing cinder water slug, flushing cinder water does not need to filter and directly enters heat exchanger recovery waste heat, and the operation cycle is long, rinse convenience, compact conformation, heat transfer efficiency are high.
Described peak regulation unit 12 comprises one or more heat exchanger 11. Peak regulation heat medium can be steam, hot water or other thermal source. It is characterized in that peak regulation unit is according to changing and regulate intermediate water supply water temperature with thermic load variation, flushing cinder coolant-temperature gage, to control intermediate water return water temperature, temperature after realization control flushing cinder water heat-obtaining.
In this patent, described intermediate water can be water, can be also other heat-obtaining medium.
Its course of work is: the flushing cinder water of blast furnace enters flushing cinder water cooling tower, all or part of flushing cinder water is switched into heat exchange unit, after heat exchange, flow back to the cold rinse bank of flushing cinder water cooling tower, intermediate water enters heat exchange unit heat exchange by the water compensation mechanism of intermediate water backwater end and bypass thereof through intermediate water graded filter, after heat exchange completes, enter the heat exchange of peak regulation unit by intermediate water supply-water pump, and confessed for water end (W.E.) by intermediate water.
Heat exchange unit is in parallel with cooling tower, utilize cooling tower pump, and heat-obtaining system does not need to establish slag-washing-out pump; By peak regulation unit according to changing by thermic load, flushing cinder coolant-temperature gage changes, and controls temperature after flushing cinder water heat-obtaining. Blast furnace slag quenching water heating picking process system of the present invention has realized the full water yield of flushing cinder water heat-obtaining at full capacity, reclaims to greatest extent using exhaust heat of slag flushing water, can be used for heating or other purposes.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (4)
1. a blast furnace slag quenching water heating picking process flow system, comprise that single cover of blast furnace and blast furnace is with flushing cinder water cooling tower and the cooling tower pump flushing cinder water system of cold rinse bank, it is characterized in that, also comprise and connect single cover flushing cinder water cooling tower the single cover heat exchange unit in parallel with flushing cinder water cooling tower, described heat exchange unit intermediate water outlet conduit connect successively intermediate water supply-water pump and peak regulation unit, described peak regulation cell end connecting secondary water is for water end (W.E.), heat exchange unit intermediate water inlet channel connecting secondary water backwater end; Described heat exchange unit flushing cinder water outlet conduit enters cold rinse bank by the cold rinse bank liquid level upper opening below cooling tower, and opening is near liquid level, and heat exchanger setting height(from bottom) is lower than open height; Between described single cover flushing cinder water cooling tower and single cover heat exchange unit in parallel, be provided with for switching and the flushing cinder penstock group of adjust flux, described flushing cinder penstock group comprises the flushing cinder penstock of being located at flushing cinder water cooling tower pipeline and being located at heat exchange unit flushing cinder water inlet channel branch road.
2. a kind of blast furnace slag quenching water heating picking process flow system according to claim 1, is characterized in that, described heat exchange unit, comprises one or more heat exchanger, and described heat exchanger is the heat exchanger of resistance to blocking type.
3. a kind of blast furnace slag quenching water heating picking process flow system according to claim 2, is characterized in that, the described heat exchanger of resistance to blocking type is full-welding plate-type heat exchanger.
4. a kind of blast furnace slag quenching water heating picking process flow system according to claim 1, is characterized in that, described peak regulation unit comprises one or more heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310106313.0A CN103146859B (en) | 2013-03-28 | 2013-03-28 | A kind of blast furnace slag quenching water heating picking process flow system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310106313.0A CN103146859B (en) | 2013-03-28 | 2013-03-28 | A kind of blast furnace slag quenching water heating picking process flow system |
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| Publication Number | Publication Date |
|---|---|
| CN103146859A CN103146859A (en) | 2013-06-12 |
| CN103146859B true CN103146859B (en) | 2016-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310106313.0A Active CN103146859B (en) | 2013-03-28 | 2013-03-28 | A kind of blast furnace slag quenching water heating picking process flow system |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660015A (en) * | 2009-09-10 | 2010-03-03 | 中冶赛迪工程技术股份有限公司 | Processing system of heating by using waste heat of hot water for slag flushing in blast furnace |
| 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 |
-
2013
- 2013-03-28 CN CN201310106313.0A patent/CN103146859B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660015A (en) * | 2009-09-10 | 2010-03-03 | 中冶赛迪工程技术股份有限公司 | Processing system of heating by using waste heat of hot water for slag flushing in blast furnace |
| 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 |
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| CN103146859A (en) | 2013-06-12 |
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