CN103146855B - 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
- CN103146855B CN103146855B CN201310104924.1A CN201310104924A CN103146855B CN 103146855 B CN103146855 B CN 103146855B CN 201310104924 A CN201310104924 A CN 201310104924A CN 103146855 B CN103146855 B CN 103146855B
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- water
- blast furnace
- heat exchange
- flushing
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Classifications
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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
-
- 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
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- Heat-Pump Type And Storage Water Heaters (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The present invention relates to a kind of for not establishing flushing cinder water cooling tower with two covers, if the blast furnace slag quenching water heating picking process flow system of storage cistern slag flushing pump flushing cinder water system, comprise the flushing cinder water system of two cuff storage cistern slag flushing pumps of blast furnace and blast furnace, the two cover heat exchange units of connecting respectively with two cover flushing cinder water systems, the two cover heat exchange unit intermediate water outlet conduits intermediate water switch valve group of connecting successively, supply-water pump and peak regulation unit, peak regulation cell end connecting secondary water is for water end (W.E.), two cover heat exchange unit intermediate water inlet channels are by intermediate water switch valve group connecting secondary water backwater end. realize continuous hot water supply by intermediate water transfer valve group, according to changing with thermic load variation, flushing cinder coolant-temperature gage, regulate intermediate water supply water temperature by peak regulation unit, 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.
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 not establishing flushing cinder water cooling tower with two covers, establish the blast furnace slag quenching water heating picking process flow system of storage cistern slag flushing 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, some blast furnace is without the flushing cinder water system of flushing cinder water cooling tower and cooling tower pump at present, and the flushing cinder water system of use storage cistern slag flushing 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, substantially discontinuity, the Modern Large Blast Furnaces that does not 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, continuously, controlled heat supply, blast furnace slag quenching water heating picking process flow system for two covers with the flushing cinder water system of storage cistern slag flushing pump.
The present invention is achieved by the following technical programs:
A kind of blast furnace slag quenching water heating picking process flow system, comprise the flushing cinder water system of two cuff storage cistern slag flushing pumps of blast furnace and blast furnace, the two cover heat exchange units of connecting respectively with two cover flushing cinder water systems, the described two cover heat exchange unit intermediate water outlet conduits intermediate water switch valve group of connecting successively, intermediate water supply-water pump and peak regulation unit, described peak regulation cell end connecting secondary water is for water end (W.E.), and two cover heat exchange unit intermediate water inlet channels are by intermediate water switch valve group water inlet pipe connecting secondary water backwater end.
Described two cover heat exchange units after slag flushing pump with two cover blast furnace slag flushing water system in series connections.
Between described storage cistern front end, storage cistern rear end, weir plate is at least set one, two covers are set is fetched water by the storage cistern front end of corresponding respectively flushing cinder water system, after heat exchange unit heat-obtaining, get back to the slag-washing-out pump group of storage cistern rear end, described two cover heat exchange units are by slag-washing-out pump group and two cover blast furnace slag flushing water system in series connections.
Described two cover blast furnace slag flushing water systems with after slag flushing pump, connect two overlap and between heat exchange units, 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 two cover flushing cinder water-system pipelines and being located at two cover heat exchange unit flushing cinder water inlet channel branch roads and outlet conduit branch road.
Described intermediate water switch valve group comprises is located at the switch valve of two cover heat exchange unit intermediate water inlet channel branch roads and/or the switch valve of two cover heat exchange unit intermediate water outlet conduit branch roads.
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 the flushing cinder water system of two cuff storage cistern slag flushing pumps of blast furnace and blast furnace, the two cover heat exchange units of connecting respectively with two cover flushing cinder water systems, the described two cover heat exchange unit intermediate water outlet conduits intermediate water switch valve group of connecting successively, intermediate water supply-water pump and peak regulation unit, described peak regulation cell end connecting secondary water is for water end (W.E.), and two cover heat exchange unit intermediate water inlet channels are by intermediate water switch valve group water inlet pipe connecting secondary water backwater end. Realize continuous hot water supply by intermediate water transfer valve group; 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 the process flow diagram of the first embodiment of the present invention.
Fig. 2 is the process flow diagram of the second embodiment of the present invention.
In figure: 1a, 1b. 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. switch valve, 9. intermediate water transfer valve group, 10. intermediate water graded filter, 11. intermediate water supply-water pumps, 12. intermediate water supply-water pump groups, 13. heat exchangers, 14. peak regulation unit, 15. small pumps, 16. slag-washing-out pumps, 17. slag-washing-out pump groups.
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.
A kind of blast furnace slag quenching water heating picking process of the present invention flow system, comprise the flushing cinder water system of two cuff storage cistern slag flushing pumps of blast furnace and blast furnace, the two cover heat exchange units 5 of connecting respectively with two cover flushing cinder water systems, the described two cover heat exchange unit intermediate water outlet conduits 7 intermediate water switch valve group 9 of connecting successively, intermediate water supply-water pump 11 and peak regulation unit 14, described peak regulation cell end connecting secondary water is for water end (W.E.), and described two cover heat exchange unit intermediate water inlet channels 6 are by intermediate water switch valve group water inlet pipe connecting secondary water backwater end.
As shown in Figure 1 a kind of embodiment of this patent be described two cover heat exchange units after slag flushing pump with two cover blast furnace slag flushing water system in series connections, utilize slag flushing pump to provide lift for heat exchange unit. The advantage of the present embodiment is, heat-obtaining system does not need to establish slag-washing-out pump, and equipment investment is little, and manipulation is simple.
Described two cover blast furnace slag flushing water systems with after slag flushing pump, connect two overlap and between heat exchange units, 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 penstock 1a, the 1b of two cover flushing cinder water-system pipelines and being located at two cover heat exchange unit flushing cinder water inlet channel 2 branch roads and outlet conduit 3 branch roads. By valve sets, flushing cinder water full dose or part are cut to heating picking process flow process and carried out heat-obtaining, and switchback can recover the original technological process of blast furnace, two cover heat exchange unit intermediate water inlet channels 9 pass through intermediate water switch valve group water inlet pipe by intermediate water graded filter 10 connecting secondary water backwater ends, the water quality that ensures intermediate water, makes equipment reach good working order.
Its course of work is: after the flushing cinder water of blast furnace enters two cover storage cisterns, slag-washing-out pump, all or part of flushing cinder water is switched into two cover heat exchange units, flows back to cinder-flushing water pipe road and carry out flushing cinder after heat exchange; Intermediate water passes through intermediate water switch valve group by the water compensation mechanism of intermediate water backwater end and bypass thereof through intermediate water graded filter, according to the duty of two cover flushing cinder water systems, enter heat exchange unit heat exchange, after heat exchange completes, enter the heat exchange of peak regulation unit by intermediate water switch valve group by intermediate water supply-water pump, and confessed for water end (W.E.) by intermediate water.
Two kinds of embodiment of this patent at least arrange weir plate one between described storage cistern front end, storage cistern rear end as shown in Figure 2, separate and prevent that flushing cinder water from refluxing, ensure the heat-obtaining effect of heat exchange unit, two covers are set is fetched water by the storage cistern front end of corresponding respectively flushing cinder water system, after heat exchange unit heat-obtaining, get back to the slag-washing-out pump group 17 of storage cistern rear end, described two cover heat exchange units are by slag-washing-out pump group and two cover blast furnace slag flushing water system in series connections. Described slag-washing-out pump group 17 is made up of at least one slag-washing-out pump 16. The advantage of the present embodiment is, for heat exchange unit provides enough lifts, ensures the work of heat exchange unit.
Its course of work is: the flushing cinder water of blast furnace enters two cover storage cisterns, all or part of flushing cinder water is sent into two cover heat exchange units by slag-washing-out pump group, after heat exchange, flow back to storage cistern rear end, separated by weir plate with the flushing cinder water before heat exchange, the flushing cinder water after heat exchange is carried and is carried out flushing cinder by slag-washing-out pump; Intermediate water passes through intermediate water switch valve group by the water compensation mechanism of intermediate water backwater end and bypass thereof through intermediate water graded filter, according to the duty of two cover flushing cinder water systems, enter heat exchange unit heat exchange, after heat exchange completes, enter the heat exchange of peak regulation unit by intermediate water switch valve group by intermediate water supply-water pump, and confessed for water end (W.E.) by intermediate water.
The intermediate water switch valve group inlet channel of this patent is provided with moisturizing bypass and water compensation mechanism. Described water compensation mechanism is made up of the small pump 15 of tank and connection thereof.
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 11, and in this example, intermediate water supply-water pump 11 is many, after intermediate water supply-water pump group 12 is located at heat exchange unit, can certainly be located at heat exchange unit backwater side before.
Described intermediate water switch valve group 9 comprises is located at the switch valve of two cover heat exchange unit intermediate water inlet channel branch roads and/or the switch valve 8 of two cover heat exchange unit intermediate water outlet conduit branch roads, in this example, adopt the switch valve of two cover heat exchange unit intermediate water inlet channel branch roads and the switch valve of two cover heat exchange unit intermediate water outlet conduit branch roads, be that two-way intermediate water inlet channel and two-way intermediate water outlet conduit are established transfer valve, composition intermediate water transfer valve group, can switch intermediate water by three kinds of modes: four groups of transfer valve foldings are switched, two groups of valves of outlet conduit often drive two groups of valve foldings of waterpipe into and switch, two groups of valves of inlet channel are often outputed two groups of valve foldings of waterpipe and are switched, realize continuous hot water supply.
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 14 is made up of one or more heat exchanger 13. 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.
Realize continuous hot water supply by intermediate water transfer valve group; 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 recovered 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.
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 (8)
1. a blast furnace slag quenching water heating picking process flow system, comprise the flushing cinder water system of two cuff storage cistern slag flushing pumps of blast furnace and blast furnace, it is characterized in that, also comprise the two cover heat exchange units of connecting respectively with two cover flushing cinder water systems, the described two cover heat exchange unit intermediate water outlet conduits intermediate water switch valve group of connecting successively, intermediate water supply-water pump and peak regulation unit, described peak regulation cell end connecting secondary water is for water end (W.E.), and two cover heat exchange unit intermediate water inlet channels are by intermediate water switch valve group water inlet pipe connecting secondary water backwater end.
2. a kind of blast furnace slag quenching water heating picking process flow system according to claim 1, is characterized in that, described two cover heat exchange units after slag flushing pump with two cover blast furnace slag flushing water system in series connections.
3. a kind of blast furnace slag quenching water heating picking process flow system according to claim 1, it is characterized in that, between described storage cistern front end, storage cistern rear end, weir plate is at least set one, two covers are set is fetched water by the storage cistern front end of corresponding respectively flushing cinder water system, after heat exchange unit heat-obtaining, get back to the slag-washing-out pump group of storage cistern rear end, described two cover heat exchange units are by slag-washing-out pump group and two cover blast furnace slag flushing water system in series connections.
4. a kind of blast furnace slag quenching water heating picking process flow system according to claim 2, it is characterized in that, described two cover blast furnace slag flushing water systems with after slag flushing pump, connect two overlap and between heat exchange units, 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 two cover flushing cinder water-system pipelines and being located at two cover heat exchange unit flushing cinder water inlet channel branch roads and outlet conduit branch road.
5. according to a kind of blast furnace slag quenching water heating picking process flow system described in any one in claim 1 to 4, it is characterized in that, described intermediate water switch valve group comprises is located at the switch valve of two cover heat exchange unit intermediate water inlet channel branch roads and/or the switch valve of two cover heat exchange unit intermediate water outlet conduit branch roads.
6. according to a kind of blast furnace slag quenching water heating picking process flow system described in any one in claim 1 to 4, it 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.
7. a kind of blast furnace slag quenching water heating picking process flow system according to claim 6, is characterized in that, the described heat exchanger of resistance to blocking type is full-welding plate-type heat exchanger.
8. according to a kind of blast furnace slag quenching water heating picking process flow system described in any one in claim 1 to 4, it is characterized in that, described peak regulation unit comprises one or more heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310104924.1A CN103146855B (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 |
|---|---|---|---|
| CN201310104924.1A CN103146855B (en) | 2013-03-28 | 2013-03-28 | A kind of blast furnace slag quenching water heating picking process flow system |
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| CN103146855A CN103146855A (en) | 2013-06-12 |
| CN103146855B true CN103146855B (en) | 2016-05-25 |
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| CN201310104924.1A Active CN103146855B (en) | 2013-03-28 | 2013-03-28 | A kind of blast furnace slag quenching water heating picking process flow system |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105803137A (en) * | 2014-12-31 | 2016-07-27 | 天津华赛尔传热设备有限公司 | Blast furnace slag washing water waste heat recovery and slag washing water switching process system |
| CN105803136A (en) * | 2014-12-31 | 2016-07-27 | 天津华赛尔传热设备有限公司 | Blast furnace slag washing water waste heat recovery process system |
Citations (4)
| 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 |
| CN102517411A (en) * | 2011-12-20 | 2012-06-27 | 青岛理工大学 | Heating system by utilization of waste heat of blast furnace slag flushing water and method thereof |
| CN203212586U (en) * | 2013-03-28 | 2013-09-25 | 天津华赛尔传热设备有限公司 | Technological process system for extracting heat from blast furnace slag washing water |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10130040A (en) * | 1996-10-25 | 1998-05-19 | Nkk Corp | Waste heat recovery method for water granulated slag production equipment and apparatus therefor |
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- 2013-03-28 CN CN201310104924.1A patent/CN103146855B/en active Active
Patent Citations (4)
| 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 |
| CN102517411A (en) * | 2011-12-20 | 2012-06-27 | 青岛理工大学 | Heating system by utilization of waste heat of blast furnace slag flushing water and method thereof |
| CN203212586U (en) * | 2013-03-28 | 2013-09-25 | 天津华赛尔传热设备有限公司 | Technological process system for extracting heat from blast furnace slag washing water |
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Owner name: TAIYUAN IRON + STEEL (GROUP) CO., LTD. SHANXI TAIY Effective date: 20150217 |
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Inventor after: Zhao Dianjin Inventor after: Wang Chao Inventor after: Meng Qinglai Inventor after: Li Runming Inventor after: Gao Yeming Inventor before: Zhao Dianjin Inventor before: Wang Chao |
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Effective date of registration: 20150217 Address after: 301721 industry zone and Garden Road, China Bicycle Kingdom, Wuqing District, Tianjin Applicant after: Tianjin Huasaier Heat Transfer Equipment Co., Ltd. Applicant after: Taiyuan Iron & Steel (Group) Co., Ltd. Applicant after: Taiyuan Iron & Steel Engineering Technology Co., Ltd. Address before: 301721 industry zone and Garden Road, China Bicycle Kingdom, Wuqing District, Tianjin Applicant before: Tianjin Huasaier Heat Transfer Equipment Co., Ltd. |
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