CN203159639U - Process flow system for extracting heat from blast furnace slag washing water - Google Patents
Process flow system for extracting heat from blast furnace slag washing water Download PDFInfo
- Publication number
- CN203159639U CN203159639U CN2013201488136U CN201320148813U CN203159639U CN 203159639 U CN203159639 U CN 203159639U CN 2013201488136 U CN2013201488136 U CN 2013201488136U CN 201320148813 U CN201320148813 U CN 201320148813U CN 203159639 U CN203159639 U CN 203159639U
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- CN
- China
- Prior art keywords
- water
- heat exchange
- secondary water
- flushing cinder
- blast furnace
- 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.)
- Withdrawn - After Issue
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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
- C21B2400/08—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 utility model relates to a process flow system for extracting heat from blast furnace slag washing water. The system is used for slag washing water systems with two slag washing water cooling towers and cooling tower pumps. The system comprises two heat exchange units connected with two slag washing water cooling towers in parallel, wherein two secondary water outlet pipelines of the heat exchange units are connected with a secondary water switching valve group, a secondary water supply pump 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 two secondary water inlet pipelines of the heat exchange units are connected with a secondary water return end by a water inlet pipe of the secondary water switching valve group. The system has the beneficial effects that the heat exchange units are connected with the cooling towers in parallel and utilize the cooling tower pumps, so that a heat extracting system is unnecessary to be provided with a slag washing water pump; continuous hot water supply is achieved by the secondary water switching valve group; the peak shaving unit is used for controlling the temperature after heat extraction from the slag washing water according to the variations of heat load and slag washing water temperature; and the system achieves full-water-volume and full-load heat extraction from the slag washing water, and furthest recovers the waste heat of the slag washing water so as to be used for heat supply and the like.
Description
Technical field
The utility model relates to a kind of process flow system of blast furnace slag quenching water waste heat recovery, relates in particular to a kind of be used to the blast furnace slag quenching water heating picking process flow system that has two cover flushing cinder water cooling towers 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 ℃ of flushing cinder water, large blast furnace generally comprises the flushing cinder water system that two covers have 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, 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, substantially do not relate to the pulp water temperature controlling requirement that liquidates of the discontinuity of blast furnace slag flushing, modern large blast furnace, do not consider yet full water yield heat-obtaining and with original blast furnace technology flow process blocked operation problem.
The utility model content
Technical problem to be solved in the utility model 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, continuously, controlled heat supply, be used for having the blast furnace slag quenching water heating picking process flow system of two cover flushing cinder water cooling towers and cooling tower pump flushing cinder water system.
The utility model is to be achieved by the following technical programs:
A kind of blast furnace slag quenching water heating picking process flow system, comprise that two covers of blast furnace and blast furnace have flushing cinder water cooling tower and the cooling tower pump flushing cinder water system of cold rinse bank, connect two cover flushing cinder water cooling towers and the two cover heat exchange units in parallel with the flushing cinder water cooling tower, the described two cover heat exchange unit secondary water outlet conduits secondary water switch valve group of connecting successively, secondary water working shaft and peak regulation unit, described peak regulation cell end connects secondary water water supply end, and two cover heat exchange unit secondary water inlet channels connect secondary water backwater end by secondary water switch valve group water inlet pipe.
Described heat exchange unit flushing cinder water outlet conduit enters cold rinse bank by opening above the cold rinse bank liquid level below the cooling tower, and opening is near liquid level, and the interchanger mounting height is lower than open height.
Be provided with for the flushing cinder penstock group of switching and regulating flow between described two cover flushing cinder water cooling towers and the two cover heat exchange units in parallel, described flushing cinder penstock group comprises that being located at two overlaps flushing cinder water cooling tower pipelines and be located at the two flushing cinder penstocks that overlap heat exchange unit flushing cinder water inlet channel branch roads.
Described secondary water switch valve group comprises that the switch valve and/or two of being located at two cover heat exchange unit secondary water inlet channel branch roads overlaps the switch valve of heat exchange unit secondary water outlet conduit branch roads.
Described heat exchange unit comprises one or more interchanger, and described interchanger is the type heat exchanger of anti-the obstruction.
The described type heat exchanger of anti-the obstruction is full welded plate formula interchanger.
Described peak regulation unit comprises one or more interchanger.
The beneficial effects of the utility model are:
System comprises that two covers of blast furnace and blast furnace have flushing cinder water cooling tower and the cooling tower pump flushing cinder water system of cold rinse bank, connect two cover flushing cinder water cooling towers and the two cover heat exchange units in parallel with the flushing cinder water cooling tower, the described two cover heat exchange unit secondary water outlet conduits secondary water switch valve group of connecting successively, secondary water working shaft and peak regulation unit, described peak regulation cell end connects secondary water water supply end, two cover heat exchange unit secondary water inlet channels connect secondary water backwater end by secondary water switch valve group water inlet pipe, heat exchange unit is in parallel with cooling tower, utilize the cooling tower pump, the heat-obtaining system does not need to establish slag-washing-out pump; Realize continuous hot water service by secondary water switching valve group; By the peak regulation unit according to change with thermal load, the flushing cinder water temp changes, and regulates secondary water supply water temperature, with control secondary water return water temperature, realizes temperature behind the control flushing cinder water heat-obtaining.The utility model blast furnace slag quenching water heating picking process system has realized the full water yield of flushing cinder water heat-obtaining at full capacity, reclaims using exhaust heat of slag flushing water to greatest extent, can be used for heating or other purposes.
Description of drawings
Fig. 1 is process flow diagram of the present utility model.
Among the figure: 1. flushing cinder penstock, 2. flushing cinder penstock, 3. heat exchange unit flushing cinder water inlet channel, 4. heat exchange unit flushing cinder water outlet conduit, the 5. type heat exchanger of anti-obstruction the, 6. heat exchange unit, 7. heat exchange unit secondary water inlet channel, 8. heat exchange unit secondary water outlet conduit, 9. switch valve, 10. secondary water switching valve group, 11. secondary water graded filters, 12. secondary water working shafts, 13. secondary water working shaft group, 14. interchanger, 15. peak regulation unit, 16. small pumps.
Embodiment
In order to make those skilled in the art understand the technical solution of the utility model better, the utility model 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 utility model flow system, comprise that two covers of blast furnace and blast furnace have flushing cinder water cooling tower and the cooling tower pump flushing cinder water system of cold rinse bank, connect two cover flushing cinder water cooling towers and the two cover heat exchange units 6 in parallel with the flushing cinder water cooling tower, the described two cover heat exchange unit secondary water outlet conduits 8 secondary water switch valve group 10 of connecting successively, secondary water working shaft 12 and peak regulation unit 15, described peak regulation cell end connects secondary water water supply end, and described two cover heat exchange unit secondary water inlet channels 7 connect secondary water backwater end by secondary water switch valve group water inlet pipe.The flushing cinder of heat exchange unit described in this example water outlet conduit enters cold rinse bank by opening above the cold rinse bank liquid level below the 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, be provided with for the flushing cinder penstock group of switching and regulating flow between described two cover flushing cinder water cooling towers and the two cover heat exchange units in parallel, described flushing cinder penstock group comprises that being located at two overlaps flushing cinder water cooling tower pipelines and be located at the two flushing cinder penstocks that overlap heat exchange unit flushing cinder water inlet channel branch roads.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, two cover heat exchange unit secondary water inlet channels 7 connect secondary water backwater end by secondary water switch valve group water inlet pipe by secondary water graded filter 11, guarantee the water quality of secondary water, make equipment reach good working order.
Secondary water switch valve group inlet channel is provided with moisturizing bypass and water compensation mechanism.Described water compensation mechanism is made up of the small pump 16 of tank and connection thereof.
The outlet of secondary water working shaft is communicated with peak regulation unit secondary water inlet pipeline in this example, and peak regulation unit secondary water out is communicated with heating pipeline or other purposes pipeline.Be provided with switch valve between the outlet of secondary water working shaft and the peak regulation unit secondary water entrance pipeline, be used for maintenance and switch or Flow-rate adjustment.
Secondary water working shaft group comprises a secondary water working shaft at least, and secondary water working shaft 12 is many in this example, and secondary water working shaft group 13 is located at after the heat exchange unit, can certainly be located at heat exchange unit backwater side before.
Described secondary water switch valve group comprises that the switch valve and/or two of being located at two cover heat exchange unit secondary water inlet channel branch roads overlaps the switch valve 9 of heat exchange unit secondary water outlet conduit branch roads, adopt the switch valve of two cover heat exchange unit secondary water inlet channel branch roads and the switch valve of two cover heat exchange unit secondary water outlet conduit branch roads in this example, be that two-way secondary water inlet channel and two-way secondary water outlet conduit are established switching valve, form secondary water switching valve group, can switch secondary water by three kinds of modes: four groups of switching 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 left two groups of valve foldings of waterpipe and are switched, and realize continuous hot water service.
Described heat exchange unit 6 comprises one or more interchanger, and described interchanger is the type heat exchanger of anti-obstruction the 5.
The described type heat exchanger of anti-the obstruction is full welded plate formula interchanger.The applicant has applied for many moneys full welded plate formula interchanger 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 filtration directly to enter the interchanger recovery waste heat, operational cycle length, flushing convenience, compact construction, heat transfer efficiency height.
Described peak regulation unit 15 is made up of one or more interchanger 14.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 secondary water supply water temperature, with control secondary water return water temperature, realizes temperature behind the control flushing cinder water heat-obtaining.
In this patent, described secondary water can be water, also can be other heat-obtaining medium.
Its working process is: the flushing cinder water of blast furnace enters two cover flushing cinder water cooling towers, all or part of flushing cinder water is switched into two cover heat exchange units, after heat exchange, flow back to the cold rinse bank of flushing cinder water cooling tower, secondary water enters heat exchange unit heat exchange through secondary water graded filter by secondary water switch valve group by the water compensation mechanism of secondary water backwater end and bypass thereof, enter the heat exchange of peak regulation unit by secondary water switch valve group by secondary water working shaft after heat exchange is finished, and confessed by secondary water water supply 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; Realize continuous hot water service by secondary water switching valve group; By the peak regulation unit according to change with thermal load, the flushing cinder water temp changes, and with control secondary water return water temperature, realizes temperature behind the control flushing cinder water heat-obtaining, cooling column also can participate in flushing cinder water temp in the guarantee of work cooling tower cold rinse bank in case of necessity.The utility model blast furnace slag quenching water heating picking process system has realized the full water yield of flushing cinder water heat-obtaining at full capacity, reclaims using exhaust heat of slag flushing water to greatest extent, can be used for heating or other purposes.
The above only is preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (7)
1. blast furnace slag quenching water heating picking process flow system, comprise that two covers of blast furnace and blast furnace have 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 two cover flushing cinder water cooling towers and the two cover heat exchange units in parallel with the flushing cinder water cooling tower, the described two cover heat exchange unit secondary water outlet conduits secondary water switch valve group of connecting successively, secondary water working shaft and peak regulation unit, described peak regulation cell end connects secondary water water supply end, and two cover heat exchange unit secondary water inlet channels connect secondary water backwater end by secondary water switch valve group water inlet pipe.
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 opening above the cold rinse bank liquid level below the 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, be provided with for the flushing cinder penstock group of switching and regulating flow between described two cover flushing cinder water cooling towers and the two cover heat exchange units in parallel, described flushing cinder penstock group comprises that being located at two overlaps flushing cinder water cooling tower pipelines and be located at the two flushing cinder penstocks that overlap heat exchange unit flushing cinder water inlet channel branch roads.
4. a kind of blast furnace slag quenching water heating picking process flow system according to claim 1, it is characterized in that described secondary water switch valve group comprises that the switch valve and/or two of being located at two cover heat exchange unit secondary water inlet channel branch roads overlaps the switch valve of heat exchange unit secondary water outlet conduit branch roads.
5. according to each described a kind of blast furnace slag quenching water heating picking process flow system in the claim 1 to 4, it is characterized in that described heat exchange unit comprises one or more interchanger, described interchanger is the type heat exchanger of anti-the obstruction.
6. a kind of blast furnace slag quenching water heating picking process flow system according to claim 5 is characterized in that, the described type heat exchanger of anti-the obstruction is full welded plate formula interchanger.
7. according to each described a kind of blast furnace slag quenching water heating picking process flow system in the claim 1 to 4, it is characterized in that described peak regulation unit comprises one or more interchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201488136U CN203159639U (en) | 2013-03-28 | 2013-03-28 | Process flow system for extracting heat from blast furnace slag washing water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201488136U CN203159639U (en) | 2013-03-28 | 2013-03-28 | Process flow system for extracting heat from blast furnace slag washing water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203159639U true CN203159639U (en) | 2013-08-28 |
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ID=49020838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201488136U Withdrawn - After Issue CN203159639U (en) | 2013-03-28 | 2013-03-28 | Process flow system for extracting heat from blast furnace slag washing water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203159639U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103146858A (en) * | 2013-03-28 | 2013-06-12 | 天津华赛尔传热设备有限公司 | Blast furnace cinder flushing water heat recovery technological process system |
-
2013
- 2013-03-28 CN CN2013201488136U patent/CN203159639U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103146858A (en) * | 2013-03-28 | 2013-06-12 | 天津华赛尔传热设备有限公司 | Blast furnace cinder flushing water heat recovery technological process system |
| CN103146858B (en) * | 2013-03-28 | 2015-12-30 | 天津华赛尔传热设备有限公司 | A kind of blast furnace slag quenching water heating picking process flow system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TAIYUAN IRON + STEEL (GROUP) CO., LTD. SHANXI TAIY Effective date: 20150215 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
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 |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: ZHAO DIANJIN WANG CHAO TO: ZHAO DIANJIN WANG CHAO MENG QINGLAI LI RUNMING GAO YEMING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150215 Address after: 301721 industry zone and Garden Road, China Bicycle Kingdom, Wuqing District, Tianjin Patentee after: Tianjin Huasaier Heat Transfer Equipment Co., Ltd. Patentee after: Taiyuan Iron & Steel (Group) Co., Ltd. Patentee after: Taiyuan Iron & Steel Engineering Technology Co., Ltd. Address before: 301721 industry zone and Garden Road, China Bicycle Kingdom, Wuqing District, Tianjin Patentee before: Tianjin Huasaier Heat Transfer Equipment Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20130828 Effective date of abandoning: 20151230 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |