CN102649992A - High-efficiency circulation system for recovering waste heat in slag flushing water - Google Patents
High-efficiency circulation system for recovering waste heat in slag flushing water Download PDFInfo
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- CN102649992A CN102649992A CN2012101313470A CN201210131347A CN102649992A CN 102649992 A CN102649992 A CN 102649992A CN 2012101313470 A CN2012101313470 A CN 2012101313470A CN 201210131347 A CN201210131347 A CN 201210131347A CN 102649992 A CN102649992 A CN 102649992A
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- flushing cinder
- flushing
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- slag
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Abstract
The invention discloses a high-efficiency circulation system for recovering waste heat in slag flushing water. The high-efficiency circulation system comprises a heat exchanger, a water pump and a valve, and is characterized in that low-temperature slag flushing water after high-temperature slag flushing water from a hot water tank exchanges heat with water for heat consumers in the heat exchanger does not flow back to the bottom of the hot water tank but directly flows into a blast-furnace slag granulation device for flushing slag, and the high-temperature slag flushing water after flushing the slag flows back to the hot water tank, so that the hot water tank is fed with the high-temperature slag flushing water from the blast-furnace slag granulation device all the time and is kept at a high temperature, and meanwhile the slag flushing water for flushing the slag is from the low-temperature slag flushing water after the heat exchange in the heat exchanger all the time. The high-efficiency circulation system can recover the waste heat with high efficiency and improve the slag flushing effect.
Description
Technical field
The present invention relates to heat recovery, relate in particular to the metallurgy industry using exhaust heat of slag flushing water and reclaim the efficient circulation system.
Background technology
Iron And Steel Plant can produce a large amount of flushing cinder water in the process of ironmaking flushing cinder, for guaranteeing the recycle effect of flushing cinder water; Need be with carrying out flushing cinder after this part flushing cinder water cooling again; So just make that heat runs off greatly, both caused the waste of the energy, again environment is caused thermal pollution.
Some using exhaust heat of slag flushing water recovery systems that adopt at present; Like Chinese patent 200810157561.7 disclosed enclosed heating system using exhaust heat of slag flushing water and Chinese patent 201020647833.4 disclosed blast furnace slag quenching water bootstrap systems; All be that interchanger is immersed in the hot tub; Can make preceding high temperature flushing cinder water of thermal exchange and the low temperature flushing cinder water after the thermal exchange all collect in the hot tub like this; Have after the flushing cinder water mixing of the temperature difference; Water temperature in the hot tub necessarily is lower than the temperature of the flushing cinder water (being used for waste heat recovery) that comes out from the blast-furnace slag granulating device, is higher than the temperature of in interchanger, carrying out the flushing cinder water (being used for flushing cinder) after the thermal exchange, thereby influences the flushing cinder effect in using exhaust heat of slag flushing water recovering effect and the blast-furnace slag granulating device.
Summary of the invention
The present invention aims to provide a kind of using exhaust heat of slag flushing water and reclaims the efficient circulation system, to reach the purpose of high efficiente callback using exhaust heat of slag flushing water, raising flushing cinder effect.
For achieving the above object, the present invention takes following technical scheme.
Using exhaust heat of slag flushing water reclaims the efficient circulation system and is made up of interchanger, water pump and valve.Interchanger is seated in the outside of hot tub.
Preferably; Use the water pump in the former flushing cinder water circulation system (former flushing cinder water circulation system be the flushing cinder water with hot tub bottom get into the blast-furnace slag granulating device carry out flushing cinder), the flushing cinder water of this exit of pump is introduced interchanger and hot user's water carries out thermal exchange through the water pump pressurization.
When above-mentioned water pump can satisfy flushing cinder water and in interchanger, gets into the hydraulic pressure of blast-furnace slag granulating device after the heat exchange; Flushing cinder water directly gets into interchanger and hot user's water carries out thermal exchange; Get into the blast-furnace slag granulating device then and carry out flushing cinder, the high temperature flushing cinder current backheat pond behind the flushing cinder.
When above-mentioned water pump can not satisfy flushing cinder water and in interchanger, gets into the hydraulic pressure of blast-furnace slag granulating device after the heat exchange, need increase a water pump newly, get into the hydraulic pressure that the blast-furnace slag granulating device carries out the flushing cinder water of flushing cinder to improve.The flushing cinder water that improves hydraulic pressure gets into granulating device again and carries out flushing cinder.
Inferior choosing; Do not use the water pump in the former flushing cinder water circulation system; Directly from hot tub flushing cinder water is guided to interchanger, flushing cinder water needed to get into water pump and pressurizes before advancing interchanger; In interchanger, carrying out flushing cinder water after the thermal exchange with hot user's water gets into the granulated blast-furnace device again and carries out flushing cinder, the high temperature flushing cinder current backheat pond behind the flushing cinder.
Using exhaust heat of slag flushing water provided by the invention reclaims the efficient circulation system; Make from hot tub high temperature flushing cinder water carries out becoming after the heat exchange with hot user's water interchanger the low temperature flushing cinder water that comes out and do not return the hot tub bottom; Carry out flushing cinder but directly get into the blast-furnace slag granulating device; High temperature flushing cinder water behind the flushing cinder flows back to hot tub again; Make in the hot tub is the high temperature flushing cinder water from the blast-furnace slag granulating device always, and keeps high temperature, and the flushing cinder water that is used for flushing cinder simultaneously carries out heat exchange low temperature flushing cinder water afterwards from interchanger always.Using exhaust heat of slag flushing water provided by the invention reclaims the efficient circulation system, can carry out waste heat recovery efficiently, improves the flushing cinder effect.
Description of drawings
Fig. 1 is that using exhaust heat of slag flushing water of the present invention reclaims the efficient circulation A of system synoptic diagram.
Fig. 2 is that using exhaust heat of slag flushing water of the present invention reclaims the efficient circulation B of system synoptic diagram.
Fig. 3 is that using exhaust heat of slag flushing water of the present invention reclaims the efficient circulation C of system synoptic diagram.
Shown in the figure: 1, blast-furnace slag granulating device; 2, hot tub; 3, water pump a; 4, interchanger; 5, valve: 6, hot user uses water inlet; 7, hot user uses water out; 8, water pump b; 9, water pump c.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is carried out detailed description.
Preferably, use water pump a3 in the former flushing cinder water circulation system.Former flushing cinder water circulation system is from hot tub 2 bottoms flushing cinder water to be guided to water pump a3 to pressurize, and gets into blast-furnace slag granulating device 1 then and carries out flushing cinder.
Have on the interchanger 4 hot user with water inlet 6 and hot user with water out 7.
As shown in Figure 1, using exhaust heat of slag flushing water reclaims the efficient circulation A of system and comprises interchanger 4, water pump a3 and valve 5.When water pump a3 can satisfy flushing cinder water and in interchanger 4, gets into the hydraulic pressure of blast-furnace slag granulating device 1 after the heat exchange; The flushing cinder water that comes out from water pump a3 gets into interchanger 4; Carry out thermal exchange with hot user's water; Flushing cinder water after the thermal exchange directly gets into blast-furnace slag granulating device 1 and carries out flushing cinder, and the high temperature flushing cinder water behind the flushing cinder flows back to hot tub 2 again.
As shown in Figure 2, using exhaust heat of slag flushing water reclaims the efficient circulation B of system and comprises interchanger 4, water pump a3, water pump b8 and valve 5.When water pump a3 can not satisfy flushing cinder water and in interchanger 4, gets into the hydraulic pressure of blast-furnace slag granulating device 1 after the heat exchange, increase a water pump b8 newly, to improve the hydraulic pressure of flushing cinder water.After the flushing cinder water entering interchanger 4 of raising hydraulic pressure carries out thermal exchange with hot user's water, get into blast-furnace slag granulating device 1 again and carry out flushing cinder, the high temperature flushing cinder water behind the flushing cinder flows back to hot tub 2 again.
Inferior choosing, do not use the water pump a3 in the former flushing cinder water circulation system, directly flushing cinder water is guided to interchanger 4 from hot tub 2.
As shown in Figure 3, using exhaust heat of slag flushing water reclaims the efficient circulation C of system and comprises interchanger 4, water pump c9 and valve 5.The flushing cinder water that comes out from hot tub 2 bottoms is through water pump c9 pressurization; Get into interchanger 4 and carry out thermal exchange with hot user's water; Flushing cinder water after the thermal exchange directly gets into blast-furnace slag granulating device 1 and carries out flushing cinder, and the high temperature flushing cinder water behind the flushing cinder flows back to hot tub 2 again.
Claims (4)
1. using exhaust heat of slag flushing water recovery efficient circulation system is made up of interchanger, water pump and valve; It is characterized in that: directly get into the blast-furnace slag granulating device and carry out flushing cinder from come out high temperature flushing cinder water carries out becoming after the heat exchange with hot user's water interchanger low temperature flushing cinder water of hot tub, the high temperature flushing cinder water behind the flushing cinder flows back to hot tub again.
2. using exhaust heat of slag flushing water according to claim 1 reclaims the efficient circulation system, it is characterized in that: be the high temperature flushing cinder water from the blast-furnace slag granulating device always in the hot tub, and keep high temperature, carry out waste heat recovery efficiently; The flushing cinder water that is used for flushing cinder simultaneously carries out heat exchange low temperature flushing cinder water afterwards from interchanger always, has improved the flushing cinder effect.
3. using exhaust heat of slag flushing water according to claim 1 reclaims the efficient circulation system; It is characterized in that: described water pump adopts the water pump in the former flushing cinder water system (former flushing cinder water circulation system be the flushing cinder water with hot tub bottom get into the blast-furnace slag granulating device through the water pump pressurization carry out flushing cinder); When this water pump can satisfy flushing cinder water and in interchanger, gets into the hydraulic pressure of blast-furnace slag granulating device after the heat exchange, need not to increase new water pump; When this water pump can not satisfy flushing cinder water and in interchanger, gets into the hydraulic pressure of blast-furnace slag granulating device after the heat exchange, need to increase new water pump to improve the hydraulic pressure of flushing cinder water.
4. using exhaust heat of slag flushing water according to claim 1 reclaims the efficient circulation system; It is characterized in that: described water pump does not adopt the water pump in the former flushing cinder water system; But increase a water pump newly; The water pump pressurization of the flushing cinder water that promptly comes out from the hot tub bottom through increasing newly gets into interchanger and hot user's water and carries out thermal exchange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101313470A CN102649992A (en) | 2012-05-02 | 2012-05-02 | High-efficiency circulation system for recovering waste heat in slag flushing water |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101313470A CN102649992A (en) | 2012-05-02 | 2012-05-02 | High-efficiency circulation system for recovering waste heat in slag flushing water |
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| CN102649992A true CN102649992A (en) | 2012-08-29 |
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| CN2012101313470A Pending CN102649992A (en) | 2012-05-02 | 2012-05-02 | High-efficiency circulation system for recovering waste heat in slag flushing water |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103243187A (en) * | 2013-05-19 | 2013-08-14 | 山西太钢不锈钢股份有限公司 | Method and system for utilizing waste heat of blast furnace slag flushing water |
| CN106440502A (en) * | 2016-11-28 | 2017-02-22 | 哈尔滨工大金涛科技股份有限公司 | Blast furnace slag-washing water waste heat refrigerating device |
| CN110205418A (en) * | 2018-06-27 | 2019-09-06 | 西安华江环保科技股份有限公司 | A kind of pressure type blast furnace red dregs waste heat recycling system and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05296673A (en) * | 1992-04-24 | 1993-11-09 | Nkk Corp | Method for recovering heat from furnace slag |
| CN101555808A (en) * | 2008-04-11 | 2009-10-14 | 无锡市东方环境工程设计研究所有限公司 | Method and special device for collecting surplus heat of flushing cinder hot water of iron-smelting furnace |
| CN101792830A (en) * | 2010-01-26 | 2010-08-04 | 北京首钢国际工程技术有限公司 | Method and device for collecting steam of flushing cinder and afterheat of hot water in iron-making blast furnace |
| CN102321773A (en) * | 2011-09-13 | 2012-01-18 | 上海盛合新能源科技有限公司 | Blast furnace slag quenching water low temperature heat electric energy transformation system |
-
2012
- 2012-05-02 CN CN2012101313470A patent/CN102649992A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05296673A (en) * | 1992-04-24 | 1993-11-09 | Nkk Corp | Method for recovering heat from furnace slag |
| CN101555808A (en) * | 2008-04-11 | 2009-10-14 | 无锡市东方环境工程设计研究所有限公司 | Method and special device for collecting surplus heat of flushing cinder hot water of iron-smelting furnace |
| CN101792830A (en) * | 2010-01-26 | 2010-08-04 | 北京首钢国际工程技术有限公司 | Method and device for collecting steam of flushing cinder and afterheat of hot water in iron-making blast furnace |
| CN102321773A (en) * | 2011-09-13 | 2012-01-18 | 上海盛合新能源科技有限公司 | Blast furnace slag quenching water low temperature heat electric energy transformation system |
Non-Patent Citations (1)
| Title |
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| 王少东: "高炉水冲渣余热利用", 《河北冶金》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103243187A (en) * | 2013-05-19 | 2013-08-14 | 山西太钢不锈钢股份有限公司 | Method and system for utilizing waste heat of blast furnace slag flushing water |
| CN106440502A (en) * | 2016-11-28 | 2017-02-22 | 哈尔滨工大金涛科技股份有限公司 | Blast furnace slag-washing water waste heat refrigerating device |
| CN110205418A (en) * | 2018-06-27 | 2019-09-06 | 西安华江环保科技股份有限公司 | A kind of pressure type blast furnace red dregs waste heat recycling system and method |
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Application publication date: 20120829 |