CN103820594A - Sectional soft water closed circulation cooling system of blast furnace body - Google Patents
Sectional soft water closed circulation cooling system of blast furnace body Download PDFInfo
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- CN103820594A CN103820594A CN201410067022.XA CN201410067022A CN103820594A CN 103820594 A CN103820594 A CN 103820594A CN 201410067022 A CN201410067022 A CN 201410067022A CN 103820594 A CN103820594 A CN 103820594A
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Abstract
The invention provides a sectional soft water closed circulation cooling system of blast furnace body, which belongs to the technical field of cooling of iron-making furnaces. The system comprises an upper cooling area and a lower cooling area; the lower cooling area comprises a lower soft water supply main, a lower cooling equipment circular water supply pipe, a furnace bottom water cooling pipe circular water supply pipe, a lower cooling equipment small water inlet branch pipe, lower cooling equipment, a lower cooling equipment small backwater branch pipe, lower cooling equipment circular backwater pipe, a furnace bottom water cooling pipe, a furnace bottom water cooling pipe circular backwater pipe and a lower soft water return main; the upper cooling area comprises an upper soft water supply main, a main control valve, an upper cooling equipment circular water supply pipe, an upper cooling equipment small water supply branch pipe, a small branch pipe control valve, upper cooling equipment, an upper cooling equipment small backwater branch pipe, an upper cooling equipment circular backwater pipe and an upper soft water return main. The sectional soft water closed circulation cooling system has the following advantages: the cooling systems of the upper area and the lower area are completely independent, thereby preventing mutual hampering between the upper area and the lower area; so it is guaranteed that the water volume in the cooling equipment is uniformly distributed, cooling effects are improved, and the service life of the cooling equipment is prolonged.
Description
Technical field
The invention belongs to ironmaking body of heater cooling technology field, a kind of blast furnace sectional type soft water airtight circulating cooling system is particularly provided, be applicable to the cooling of any appearance level blast furnace.
Background technology
Soft water airtight circulating cooling system is the cooling important technical of blast furnace, the system that is characterized in is completely airtight, water coolant is undertaken cooling by whole the smaller branch pipe of all cooling apparatuss of body of heater series connection in vertical mode from bottom to up, take away heat, then get back to pump house by water return pipeline, after heat exchanger heat exchange cooling, deliver to pump group and recycle.In the time that actual production operates, there is following problem in this system:
1, when changing because of thermal load or because of production operation, when the reason such as hunting leak, burn out and need to upper blast furnace region being regulated separately or be cut off the water supply as the cooling water inflow of the cooling apparatus of bosh, furnace bosh and shaft, because upper and lower part cooling apparatus is all connected, can have influence on bottom house region as the water consumption of cupola well, the corresponding cooling apparatus of furnace bottom, affect the steady operation of cooling system, cannot operate upper area cooling apparatus separately.
2, due to blast furnace up-down portion region thermal load difference, cooling apparatus institute's water requirement and decoration form are also different, conventionally the water yield that lower region has more compared with upper area need be jumped pipe mode by bypass and is directly back to backwater endless tube, cause the drag losses of cooling apparatus series pipe inconsistent in 360 ° of circumferential directions distributions of body of heater, the water yield that enters cooling apparatus can not be uniformly distributed.
Summary of the invention
The object of the present invention is to provide a kind of blast furnace sectional type soft water airtight circulating cooling system, by the upper and lower part of the close circulating cooling system of soft water of all connecting is from bottom to top separated, realize independent circulation circuit separately, when thereby the whole series connection of solution blast furnace cooling apparatus are cooling, upper and lower part operation checks and balance, affect a difficult problem for normal regulating demand, reach the object that can regulate separately as required cooling apparatus institute of blast furnace up-down portion water requirement.
The present invention includes top cooled region, bottom cooled region.Bottom cooled region comprises bottom soft water water main 1, bottom cooling apparatus water supply endless tube 2, furnace bottom water cooling tube water supply endless tube 7, bottom cooling apparatus water inlet smaller branch pipe 3, bottom cooling apparatus 4, bottom cooling apparatus backwater smaller branch pipe 5, bottom cooling apparatus backwater endless tube 6, furnace bottom water cooling tube 8, furnace bottom water cooling tube backwater endless tube 9, bottom soft water return main 10;
The each assembly method of attachment of bottom cooled region: bottom soft water water main 1 is connected with bottom cooling apparatus water supply endless tube 2 and furnace bottom water cooling tube water supply endless tube 7 respectively;
Bottom cooling apparatus water supply endless tube 2 is linked in sequence with bottom cooling apparatus water inlet smaller branch pipe 3, bottom cooling apparatus 4, bottom cooling apparatus backwater smaller branch pipe 5, bottom cooling apparatus backwater endless tube 6;
Furnace bottom water cooling tube water supply endless tube 7 is linked in sequence with furnace bottom water cooling tube 8, furnace bottom water cooling tube backwater endless tube 9;
Bottom cooling apparatus backwater endless tube 6 and furnace bottom water cooling tube backwater endless tube 9 are connected with bottom soft water return main 10 respectively.
Top cooled region comprises top soft water water main 11, total tube control flap 12, top cooling apparatus water supply endless tube 13, top cooling apparatus water supply smaller branch pipe 14, smaller branch pipe by-pass valve control 15, top cooling apparatus 16, top cooling apparatus backwater smaller branch pipe 17, top cooling apparatus backwater endless tube 18, top soft water return main 19 etc.; Top cooled region by cooling-water flowing to top soft water water main 11, total tube control flap 12, top cooling apparatus water supply endless tube 13, top cooling apparatus water supply smaller branch pipe 14, smaller branch pipe by-pass valve control 15, top cooling apparatus 16, top cooling apparatus backwater smaller branch pipe 17, top cooling apparatus backwater endless tube 18, top soft water return main 19 etc. are linked in sequence;
Region, body of heater upper and lower part forms independently cooling system.
Water coolant is divided into by pump house that two-way is delivered to respectively upper of furnace body region cooling apparatus and lower region cooling apparatus carries out cooling, can regulate separately the upper area cooling apparatus somewhere smaller branch pipe water yield according to production operation demand, also can regulate separately the required total Water of upper area cooling apparatus.
Advance of the present invention is: the cooling system in blast furnace up-down portion region is carried out to segmentation, can be separately to operations such as the cooling water inflow of upper area cooling apparatus regulate, cuts off the water supply, and the cooling water inflow of lower region cooling apparatus can not be affected, avoid Liang Ge region, upper and lower part cooling system to check and balance, affected the problem of normal cooling separately.Simultaneously, by the actual required water yield that provides in each region, upper and lower part, avoid occurring bypass jumping pipe, make the drag losses of cooling apparatus series pipe distribute consistent at 360 ° of circumferential directions of body of heater, the water yield that assurance enters cooling apparatus can be uniformly distributed, improve cooling performance, extend the work-ing life of cooling apparatus.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention and schema.Wherein, bottom soft water water main 1, bottom cooling apparatus water supply endless tube 2, bottom cooling apparatus water inlet smaller branch pipe 3, bottom cooling apparatus 4, bottom cooling apparatus backwater smaller branch pipe 5, bottom cooling apparatus backwater endless tube 6, furnace bottom water cooling tube water supply endless tube 7, furnace bottom water cooling tube 8, furnace bottom water cooling tube backwater endless tube 9, bottom soft water return main 10, top soft water water main 11, total tube control flap 12, top cooling apparatus water supply endless tube 13, top cooling apparatus water supply smaller branch pipe 14, smaller branch pipe by-pass valve control 15, top cooling apparatus 16, top cooling apparatus backwater smaller branch pipe 17, top cooling apparatus backwater endless tube 18, top soft water return main 19.
Embodiment
As shown in Figure 1, blast furnace sectional type soft water cooling system of the present invention is divided into bottom soft water airtight circulating cooling system and top soft water airtight circulating cooling system two portions.Wherein, bottom soft water airtight circulating cooling system workflow: water coolant enters bottom cooling apparatus water supply endless tube 2 and furnace bottom water cooling tube water supply endless tube 7 by bottom soft water water main 1, carry out cooling to bottom cooling apparatus 4 and furnace bottom water cooling tube 8 respectively, after cooling, enter bottom soft water return main 10 by bottom cooling apparatus backwater endless tube 6 and furnace bottom water cooling tube backwater endless tube 9 respectively and get back to pump house, after heat exchanger heat exchange cooling, deliver to pump group and recycle.Top soft water airtight circulating cooling system workflow: water coolant enters upper of furnace body cooling apparatus 16 by top soft water water main 11, top cooling apparatus water supply endless tube 13 and carries out cooling, then be back to top cooling apparatus backwater endless tube 18, get back to pump house by top soft water return main 19, after heat exchanger heat exchange cooling, deliver to pump group and recycle.
On, two of bottoms system is worked simultaneously, reduce the temperature of furnace lining, in the time of the production operations such as soft water airtight circulating cooling system somewhere, the top cooling apparatus water yield need to regulate separately or cut off the water supply, smaller branch pipe by-pass valve control 15 in adjustable top cooling apparatus water supply smaller branch pipe 14 and top cooling apparatus backwater smaller branch pipe 17, complete voluntarily in internal system, do not affect bottom soft water airtight circulating cooling system work, thereby make body of heater everywhere cooling apparatus reasonably at temperature, working, furnace lining temperature field is distributed rationally, eliminate or reduction thermal stresses, protection bricking is stable, safeguard type in reasonably operation, guarantee smooth operation of furnace, complete the cooling task of blast furnace system.
Top soft water airtight circulating cooling system and bottom soft water closed circulating system are completely independent separately, do not pin down mutually, according to system load of heat and cooling stave configuring condition consider the required cooling water inflow of calculating native system separately, avoid occurring that the unnecessary water yield is to jump pipe mode backwater phenomenon, make the resistance loss of pipeline of 360 ° of circumferential direction cooling stave smaller branch pipe of body of heater consistent, guarantee that the water yield that enters cooling stave can be uniformly distributed.
Sectional type soft water airtight circulating cooling system of the present invention has multiple embodiments, the accompanying drawing explanation use that only lays down a definition, not limitation of the present invention.Anyly do not depart from mentality of designing of the present invention, the present invention is done to unsubstantiality changes, all still belong to scope of the present invention.
Claims (1)
1. a blast furnace sectional type soft water airtight circulating cooling system, comprises top cooled region and bottom cooled region; It is characterized in that,
Bottom cooled region comprises bottom soft water water main (1), bottom cooling apparatus water supply endless tube (2), furnace bottom water cooling tube water supply endless tube (7), bottom cooling apparatus water inlet smaller branch pipe (3), bottom cooling apparatus (4), bottom cooling apparatus backwater smaller branch pipe (5), bottom cooling apparatus backwater endless tube (6), furnace bottom water cooling tube (8), furnace bottom water cooling tube backwater endless tube (9), bottom soft water return main (10);
Bottom soft water water main (1) is connected with bottom cooling apparatus water supply endless tube (2) and furnace bottom water cooling tube water supply endless tube (7) respectively; Bottom cooling apparatus water supply endless tube (2) is linked in sequence with bottom cooling apparatus water inlet smaller branch pipe (3), bottom cooling apparatus (4), bottom cooling apparatus backwater smaller branch pipe (5), bottom cooling apparatus backwater endless tube (6); Furnace bottom water cooling tube water supply endless tube (7) and furnace bottom water cooling tube) 8, furnace bottom water cooling tube backwater endless tube (9) is linked in sequence; (10(is connected with bottom soft water return main respectively for bottom cooling apparatus backwater endless tube (6) and furnace bottom water cooling tube backwater endless tube (9);
Top cooled region comprises top soft water water main (11), total tube control flap (12), top cooling apparatus water supply endless tube (13), top cooling apparatus water supply smaller branch pipe (14), smaller branch pipe by-pass valve control (15), top cooling apparatus (16), top cooling apparatus backwater smaller branch pipe (17), top cooling apparatus backwater endless tube (18), top soft water return main (19); Top cooled region by cooling-water flowing to top soft water water main (11), total tube control flap (12), top cooling apparatus water supply endless tube (13), top cooling apparatus water supply smaller branch pipe (14), smaller branch pipe by-pass valve control (15), top cooling apparatus (16), top cooling apparatus backwater smaller branch pipe (17), top cooling apparatus backwater endless tube (18), top soft water return main (19) are linked in sequence.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410067022.XA CN103820594B (en) | 2014-02-26 | 2014-02-26 | Blast furnace sectional type soft water airtight circulating cooling system |
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| CN201410067022.XA CN103820594B (en) | 2014-02-26 | 2014-02-26 | Blast furnace sectional type soft water airtight circulating cooling system |
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| CN103820594A true CN103820594A (en) | 2014-05-28 |
| CN103820594B CN103820594B (en) | 2016-03-09 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105349720A (en) * | 2015-11-19 | 2016-02-24 | 南京钢铁股份有限公司 | Method for online treatment of water leakage of cooling wall water supply branch pipe of blast furnace hearth |
| CN105969923A (en) * | 2016-06-15 | 2016-09-28 | 扬州大学 | Partition water supply quantitative optimization method for steel mill blast furnace circulating cooling water system |
| CN106498106A (en) * | 2017-01-06 | 2017-03-15 | 中冶华天工程技术有限公司 | Modified blast furnace soft water closed circulation system and method |
| CN110763019A (en) * | 2019-12-02 | 2020-02-07 | 中冶焦耐(大连)工程技术有限公司 | Electric smelting magnesia furnace shell cooling device and method |
| CN112853018A (en) * | 2019-11-27 | 2021-05-28 | 中冶京诚工程技术有限公司 | Open circuit industrial water cooling system |
| CN113293247A (en) * | 2021-05-31 | 2021-08-24 | 四川省达州钢铁集团有限责任公司 | Construction method of partial segmental cooling system in blast furnace |
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| JPS59200707A (en) * | 1983-04-30 | 1984-11-14 | Sumitomo Metal Ind Ltd | Cooling method of bottom plate of blast furnace |
| JPS6118165Y2 (en) * | 1980-08-12 | 1986-06-03 | ||
| CN201125250Y (en) * | 2007-07-27 | 2008-10-01 | 中冶华天工程技术有限公司 | Blast furnace body soft water cooling structure |
| CN202440524U (en) * | 2012-01-06 | 2012-09-19 | 中冶东方工程技术有限公司 | Improved closed-circulation cooling water system for blast furnace |
| CN103421917A (en) * | 2013-08-15 | 2013-12-04 | 北京首钢国际工程技术有限公司 | Blast furnace soft water closed-recirculation cooling system |
| CN203393172U (en) * | 2013-08-12 | 2014-01-15 | 武汉钢铁(集团)公司 | Online adjusting system for heat load distribution of full-cooling-wall blast furnace |
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| JPS6118165Y2 (en) * | 1980-08-12 | 1986-06-03 | ||
| JPS59200707A (en) * | 1983-04-30 | 1984-11-14 | Sumitomo Metal Ind Ltd | Cooling method of bottom plate of blast furnace |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105349720A (en) * | 2015-11-19 | 2016-02-24 | 南京钢铁股份有限公司 | Method for online treatment of water leakage of cooling wall water supply branch pipe of blast furnace hearth |
| CN105969923A (en) * | 2016-06-15 | 2016-09-28 | 扬州大学 | Partition water supply quantitative optimization method for steel mill blast furnace circulating cooling water system |
| CN106498106A (en) * | 2017-01-06 | 2017-03-15 | 中冶华天工程技术有限公司 | Modified blast furnace soft water closed circulation system and method |
| CN112853018A (en) * | 2019-11-27 | 2021-05-28 | 中冶京诚工程技术有限公司 | Open circuit industrial water cooling system |
| CN110763019A (en) * | 2019-12-02 | 2020-02-07 | 中冶焦耐(大连)工程技术有限公司 | Electric smelting magnesia furnace shell cooling device and method |
| CN110763019B (en) * | 2019-12-02 | 2024-05-17 | 中冶焦耐(大连)工程技术有限公司 | Device and method for cooling electric smelting magnesium furnace shell |
| CN113293247A (en) * | 2021-05-31 | 2021-08-24 | 四川省达州钢铁集团有限责任公司 | Construction method of partial segmental cooling system in blast furnace |
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| CN103820594B (en) | 2016-03-09 |
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