CN103146859A - Blast furnace cinder flushing water heat recovery technological process system - Google Patents
Blast furnace cinder flushing water heat recovery technological process system Download PDFInfo
- Publication number
- CN103146859A CN103146859A CN2013101063130A CN201310106313A CN103146859A CN 103146859 A CN103146859 A CN 103146859A CN 2013101063130 A CN2013101063130 A CN 2013101063130A CN 201310106313 A CN201310106313 A CN 201310106313A CN 103146859 A CN103146859 A CN 103146859A
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- CN
- China
- Prior art keywords
- water
- cooling tower
- flushing cinder
- heat exchange
- blast furnace
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- 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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- 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
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- 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
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- 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
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention relates to a blast furnace cinder flushing water heat recovery technological process system used for a cinder flushing water system with a single cinder flushing water cooling tower and a cooling tower pump. The technological process system comprises a heat exchange unit connected with the single cinder flushing water cooling tower in parallel, wherein a secondary water outlet pipeline of the heat exchange unit is connected with secondary water supply pumps and a peak shaving unit in series in sequence; the tail end of the peak shaving unit is connected with a secondary water supply end; and a secondary water inlet pipeline of the heat exchange unit is connected with a secondary water return end. The technological process system has the beneficial effects that the heat exchange unit is connected with the cooling tower in parallel, and the heat recovery system is unnecessary to be provided with the cinder flushing water pump by utilizing the cooling tower pump; the temperature after heat recovery from the cinder flushing water is controlled by the peak shaving unit according to the heat load change and the cinder flushing water temperature change; and the system achieves full-water-volume and full-load heat recovery from the cinder flushing water, furthest recovers the waste heat of the cinder flushing water and can be used for heat supply 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, produce a large amount of 60～90 ℃ of flushing cinder water after shrend, medium and small blast furnace generally comprises a cover with the flushing cinder water system of flushing cinder water cooling tower and cooling tower pump, flushing cinder water contains solid particulate and especially contains a large amount of suspended substances, if directly the heating meeting is deposited, is stopped up at pipeline, scatterer, and indirect heat exchange adopts conventional interchanger can stop up equally, can't long period use, therefore, for many years using exhaust heat of slag flushing water all less than comprehensively, effective recycling.Aspect technical process, present 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 blocked 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 blocked operation, controlled heat supply, be used 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 and the single cover heat exchange unit in parallel with the flushing cinder water cooling tower, described heat exchange unit intermediate water outlet conduit connect successively intermediate water working shaft 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 the interchanger mounting height is lower than open height.
Described single cover flushing cinder water cooling tower and single flushing cinder penstock group that is provided with between heat exchange unit for switching and adjust flux of overlapping in parallel, 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 interchanger, and described interchanger is the interchanger of anti-the blocking type.
The described interchanger of anti-the blocking type is full-welding plate-type heat exchanger.
Described peak regulation unit comprises one or more interchanger.
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 and the single cover heat exchange unit in parallel with the flushing cinder water cooling tower, described heat exchange unit intermediate water outlet conduit connect successively intermediate water working shaft 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 the cooling tower pump, and the heat-obtaining system does not need to establish slag-washing-out pump; By the peak regulation unit according to change with thermal load, the flushing cinder water temp changes, and regulates the intermediate water supply water temperature, to control the intermediate water return water temperature, realizes controlling temperature after flushing cinder water heat-obtaining.Blast furnace slag quenching water heating picking process of the present invention system 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.
Description of 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 interchanger of anti-the 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 working shaft, 10. intermediate water working shaft group, 11. interchanger, 12. the peak regulation unit, 13. small pumps.
Embodiment
In order to make those skilled in the art understand better technical scheme of the present invention, the present invention is described in further detail below in conjunction with accompanying drawing and most preferred embodiment.
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 and the single cover heat exchange unit 5 in parallel with the flushing cinder water cooling tower, described heat exchange unit intermediate water outlet conduit 7 connect successively intermediate water working shaft 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, the interchanger mounting height is lower than open height, utilize the cooling tower pump, the heat-obtaining system does not need to establish slag-washing-out pump, described single cover flushing cinder water cooling tower and single flushing cinder penstock group that is provided with between heat exchange unit for switching and adjust flux of overlapping in parallel, 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 the heating picking process flow process and carried out heat-obtaining, and the switchback cooling tower can recover the original technical process of blast furnace, heat exchange unit intermediate water inlet channel 6 is by intermediate water graded filter 8 connecting secondary water backwater ends, guarantee the water quality of intermediate water, make 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 comprised of the small pump 13 of tank and connection thereof.
In this example, intermediate water working shaft outlet is communicated with peak regulation unit intermediate water inlet pipeline, and peak regulation unit intermediate water exports and heating pipeline or other purposes pipeline communication.Be provided with switch valve between the outlet of intermediate water working shaft and peak regulation unit intermediate water import and export pipeline, be used for maintenance and switch or Flow-rate adjustment.
Intermediate water working shaft group comprises an intermediate water working shaft at least, and in this example, intermediate water working shaft 9 is many, after intermediate water working shaft 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 interchanger, and described interchanger is the interchanger of anti-blocking type the 4.
The described interchanger of anti-the 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 ingress and inside thereof, solved the difficult problem of flushing cinder water slug, flushing cinder water does not need to filter and directly enters the interchanger recovery waste heat, and the operational cycle is long, rinse convenience, compact construction, heat transfer efficiency are high.
Described peak regulation unit 12 comprises one or more interchanger 11.The peak regulation heating medium can be steam, hot water or other thermal source.It is characterized in that the peak regulation unit according to change with thermal load, the flushing cinder water temp changes and regulates the intermediate water supply water temperature, to control the intermediate water return water temperature, realizes controlling temperature after flushing cinder water heat-obtaining.
In this patent, described intermediate water can be water, also can be other heat-obtaining medium.
Its working process is: the flushing cinder water of blast furnace enters the flushing cinder water cooling tower, all or part of flushing cinder water is switched into heat exchange unit, flow back to the cold rinse bank of flushing cinder water cooling tower after heat exchange, intermediate water enters the heat exchange unit heat exchange by the water compensation mechanism of intermediate water backwater end and bypass thereof through the intermediate water graded filter, enter peak regulation unit heat exchange by the intermediate water working shaft after heat exchange is completed, and confessed for water end (W.E.) by intermediate water.
Heat exchange unit is in parallel with cooling tower, utilize the cooling tower pump, and the heat-obtaining system does not need to establish slag-washing-out pump; By the peak regulation unit according to change with thermal load, the flushing cinder water temp changes, and controls temperature after flushing cinder water heat-obtaining.Blast furnace slag quenching water heating picking process of the present invention system 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; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle 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 (6)
1. 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 and the single cover heat exchange unit in parallel with the flushing cinder water cooling tower, described heat exchange unit intermediate water outlet conduit connect successively intermediate water working shaft 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.
2. a kind of blast furnace slag quenching water heating picking process flow system according to claim 1, it is characterized in that, 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 the interchanger mounting height is lower than open height.
3. a kind of blast furnace slag quenching water heating picking process flow system according to claim 1, it is characterized in that, described single cover flushing cinder water cooling tower and single flushing cinder penstock group that is provided with between heat exchange unit for switching and adjust flux of overlapping in parallel, 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.
4. the described a kind of blast furnace slag quenching water heating picking process flow system of any one according to claim 1 to 3, is characterized in that, described heat exchange unit comprises one or more interchanger, and described interchanger is the interchanger of anti-the blocking type.
5. a kind of blast furnace slag quenching water heating picking process flow system according to claim 4, is characterized in that, the described interchanger of anti-the blocking type is full-welding plate-type heat exchanger.
6. the described a kind of blast furnace slag quenching water heating picking process flow system of any one according to claim 1 to 3, is characterized in that, described peak regulation unit comprises one or more interchanger.
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 |
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| 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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| CN103146859A true CN103146859A (en) | 2013-06-12 |
| CN103146859B CN103146859B (en) | 2016-05-25 |
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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 |
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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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| CN103146859B (en) | 2016-05-25 |
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