CN202610064U - System for using waste steam of flushing cinder of ironmaking blast furnace to prepare soft water and utilizing waste heat - Google Patents

System for using waste steam of flushing cinder of ironmaking blast furnace to prepare soft water and utilizing waste heat Download PDF

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Publication number
CN202610064U
CN202610064U CN2012200129610U CN201220012961U CN202610064U CN 202610064 U CN202610064 U CN 202610064U CN 2012200129610 U CN2012200129610 U CN 2012200129610U CN 201220012961 U CN201220012961 U CN 201220012961U CN 202610064 U CN202610064 U CN 202610064U
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China
Prior art keywords
water
flushing
cinder
waste
pipe
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Expired - Fee Related
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CN2012200129610U
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Chinese (zh)
Inventor
张新喜
张森淼
潘芳慧
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Anhui University of Technology AHUT
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Anhui University of Technology AHUT
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Priority to CN2012200129610U priority Critical patent/CN202610064U/en
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    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B2400/00Treatment of slags originating from iron or steel processes
    • C21B2400/02Physical or chemical treatment of slags
    • C21B2400/022Methods of cooling or quenching molten slag
    • C21B2400/024Methods of cooling or quenching molten slag with the direct use of steam or liquid coolants, e.g. water
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B2400/00Treatment of slags originating from iron or steel processes
    • C21B2400/05Apparatus features
    • C21B2400/066Receptacle features where the slag is treated
    • C21B2400/072Tanks to collect the slag, e.g. water tank
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B2400/00Treatment of slags originating from iron or steel processes
    • C21B2400/08Treatment of slags originating from iron or steel processes with energy recovery
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Abstract

The utility model provides a system for using waste steam of flushing cinder of an ironmaking blast furnace to prepare soft water and utilizing waste heat. The system comprises a water quenching flushing cinder circulating device, a waste steam purification device and a water making device; the water quenching flushing cinder circulating device consists of a flushing cinder water circulating tank, a flushing cinder water circulating pump, a high-temperature molten cinder spout, a flushing cinder channel, a rotary screen, a rotary screen hood and a cinder outlet belt, the waste steam purification device consists of a steam hood, a waste steam purifier and a drain valve, the water making device consists of a condensing heat exchanger, a thermal deaerator, a finished water pipe, a condensing water pump, a fine treater, a multistage flash evaporator, a new water pipe and a non-condensing steam pipe. The system has the advantages of using waste steam to make soft water or demineralized water with low cost and low pollution and recover waste heat, and greatly reducing emission of flushing cinder dust and visual pollution of the waste steam, and being obvious in comprehensive benefits.

Description

Iron-smelting blast furnace flushing cinder waste vapour prepares soft water and utilizes the system of waste heat
Technical field
The utility model belongs to the UTILIZATION OF VESIDUAL HEAT IN technical field, is specifically related to a kind of iron-smelting blast furnace flushing cinder waste vapour bootstrap system.
Background technology
Key in herein in Iron And Steel Industry is produced, iron-smelting blast furnace will be discharged a large amount of 1500 ℃ of left and right sides high-temperature slags, contains a large amount of high temperature sensible heats simultaneously, under the impact of 6 ~ 8 times of water, is granulated into grain slag.Water is heated, and produces a large amount of low-temp low-pressure waste vapour, and carry a certain amount of dust secretly and enter in the air, pollutant atmosphere, its water smoke also forms visual pollution.Waste vapour in uphill process, constantly be condensed into water droplet be scattered near on the equipment, pipeline, dust of carrying secretly and dissolved sour gas can cause surrounding devices, Corrosion of Pipeline and stained again.Hot water circulation behind the flushing cinder is used, and its temperature can reach more than 95 ℃.At present, for the blast furnace slag flushing waste heat, people mainly reclaim through modes such as hot water for slag flushing heating, and because of heating season property is strong, reasons such as high, the easy fouling of hot water hardness are difficult to promote, and cause a large amount of waste heats, dust and steam still to enter atmosphere around the clock.
The reason that past high-temperature slag shrend UTILIZATION OF VESIDUAL HEAT IN is failed time and again, except ignoring the harm of flushing cinder water hardness, prior reason is to think that by error waste heat is in water; Just the opposite, no matter adopt the water of many low temperatures to come flushing cinder, in contacting with the moment of high-temperature slag; The capital produces a large amount of steam, and takes away most of heat, has only a spot of heat to get in the water; Circulation flushing cinder water temp is improved constantly, near 100 ℃.Not only interchanger and pipeline scale are very fast with the heating of flushing cinder water cycle the time, and water temperature also descends very soon, causes the heating effect bad.
Summary of the invention
The utility model aims to provide the system that a kind of iron-smelting blast furnace flushing cinder waste vapour prepares soft water and utilizes waste heat, to realize preparation high-quality soft water, to improve the purpose that the blast furnace slag flushing utilization rate of waste heat reduces dust pollution simultaneously.
The purpose of the utility model is achieved through following technical scheme.
A kind of iron-smelting blast furnace flushing cinder of the utility model waste vapour prepares soft water and utilizes the system of waste heat, comprises shrend circulation slag flushing device, waste vapour refining plant and water generator; Said shrend circulation slag flushing device is made up of flushing cinder water circulation tank, flushing cinder water-circulating pump, high-temperature slag ditch, cinder-flushing groove, rotary screen, rotating screen guard and the belt of slagging tap; Said high-temperature slag ditch is located at cinder-flushing groove import top; Said cinder-flushing groove stretches into rotary screen inside; The said belt of slagging tap picks out from rotary screen inside, and said rotary screen cover cap is lived rotary screen, and said flushing cinder water circulation tank is located at the rotary screen below; And link to each other with the flushing cinder water-circulating pump by water absorption tube, be connected under the outlet of high-temperature slag ditch from the rising pipe of flushing cinder water-circulating pump; Said waste vapour refining plant is made up of vapour collect cover, waste vapour cleaner and bleed valve; Said vapour collect cover covers the cinder-flushing groove in the above-mentioned shrend circulation slag flushing device; With dry pipe vapour collect cover is linked to each other with the waste vapour cleaner, said bleed valve links to each other with rotary screen in the above-mentioned shrend circulation slag flushing device; Said water generator by condensing heat exchanger, thermal deaerator, finished product water pipe, condensate pump, polisher, MSF device, new water pipe and not catch tank form; Said condensing heat exchanger leading portion connects that polisher rising pipe, its back segment prolong link to each other with the MSF device, its top joins with catch tank not, its underpart condensate pipe and condensate pump join; The top steam outlet pipe of the waste vapour cleaner in said condensing heat exchanger and the above-mentioned waste vapour refining plant links to each other; Said MSF device water-in connects new water pipe, its rising pipe and condensing heat exchanger joins, take back the MSF device after the indirect heating again, its condensate pipe also joins with condensate pump, its underpart concentrates water pipe and inserts the flushing cinder water circulation tank in the above-mentioned shrend circulation slag flushing device; Said condensate pump rising pipe and polisher import are joined; Said polisher water outlet gets in the thermal deaerator through aforementioned condensing heat exchanger heats deoxygenation, and said thermal deaerator connects the finished product water pipe.
As a kind of optimization, in connecting the waste vapour refining plant, on the dry pipe of vapour collect cover and waste vapour cleaner the emergency dump steam tube is set.
The technique effect of the utility model is: overcome to have now and directly utilized the using exhaust heat of slag flushing water method to be prone to fouling, recovery utilization rate is low, can not solve defectives such as waste vapour dust polluting environment problem.With exhaust steam system soft water and recovery waste heat, not only annual a large amount of waste heats and the water of condensation of reclaiming; And in precision processing such as soft water, de-mineralized water, prolong the cycle of operation of yin, yang ion-exchanger greatly, and improve effluent quality, reduce reagent consumption such as regeneration soda acid and regenerative wastewater amount more than 90%; A large amount of simultaneously dust discharge and visual pollutions of reducing, comprehensive benefit is remarkable.
Description of drawings
Fig. 1 is the synoptic diagram of the utility model system.
Shown in the figure: 1. flushing cinder water circulation tank, 2. flushing cinder water-circulating pump, 3. high-temperature slag ditch, 4. cinder-flushing groove, 5. vapour collect cover; 6. rotary screen, 7. rotating screen guard, 8. cleaner, 9. bleed valve, the belt of 10. slagging tap; 11. condensing heat exchanger, 12. thermal deaerators, 13. finished product water pipes, 14. condensate pumps, 15. polisher; 16. the MSF device, 17. new water pipes, 18. catch tanks not, 19. emergency dump steam tubes.
Embodiment
Below in conjunction with detailed description of the drawings the utility model.
As shown in Figure 1, a kind of iron-smelting blast furnace flushing cinder of the utility model waste vapour prepares soft water and utilizes the system of waste heat, is made up of shrend circulation slag flushing device, waste vapour refining plant and water generator three parts, and each several part primary structure and function introduction are following:
First part: shrend circulation slag flushing device
High-temperature slag ditch 3 is located at cinder-flushing groove 4 imports tops, is connected under 3 outlets of high-temperature slag ditch from the rising pipe of flushing cinder water-circulating pump 2, and the high-temperature slag of discharge is broken up by the high velocity jet of below, the cool quickly granulation, and pulp water falls into cinder-flushing groove 4 together; Cinder-flushing groove 4 stretches into rotary screen 6 inside, and pulp water is imported rotary screen 6 together; The belt 10 of slagging tap picks out from rotary screen 6 inside, derives grain slag; Rotating screen guard 7 covers rotary screen 6, with the duct waste vapour that produces in the filtration procedure is introduced vapour collect cover 5, in order to avoid the waste vapour diffusion; Vapour collect cover 5 covers cinder-flushing groove 4, links to each other with waste vapour cleaner 8 with dry pipe, waste vapour is collected the back import cleaner 8; Flushing cinder water circulation tank 1 is located at rotary screen 6 belows, and collecting precipitation rotary screen 6 filter back water, and linked to each other with flushing cinder water-circulating pump 2 by water absorption tube are connected under high-temperature slag ditch 3 exports the circulation flushing cinder from the rising pipe of flushing cinder water-circulating pump 2.Necessary insulation is carried out in the pulp water recycle system that liquidates equipment, pipeline and pond, so that reduce calorific loss.
Second section: waste vapour refining plant
Waste vapour refining plant 8 tops link to each other with dry pipe with vapour collect cover 5 tops, and steam outlet pipe links to each other with condensing heat exchanger 11, and the bottom is inserted rotary screen 6 with pipeline through bleed valve 9, and water in the waste vapour and dust separation are come out, and improves the water quality of water of condensation; Establish emergency dump steam tube 19 on the dry pipe, so that waste vapour is diffused during the follow up device fault.
Third part: water generator
Condensing heat exchanger 11 links to each other with waste vapour refining plant 8, and leading portion connects polisher 15 rising pipes, behind condensing heat exchanger 11, links to each other with thermal deaerator 12, removes the dissolved oxygen in the water; Condensing heat exchanger 11 back segment prolongs link to each other with MSF device 16, and its top joins with catch tank 18 not, and its condensate pipe and condensate pump 14 join; MSF device 16 water-ins connect new water pipe 17, and its rising pipe and condensing heat exchanger 11 join, and take back MSF device 16 after the indirect heating again, and its condensate pipe also joins with condensate pump 14, and its underpart concentrates water pipe and inserts flushing cinder water circulation tank 1; Condensate pump 14 rising pipes and polisher 15 imports are joined, and polisher 15 water outlets are through aforementioned condensing heat exchanger 11 heating deoxygenations.Polisher 15 is general according to the demands of different of different user to finished product water quality, correspondingly selects technologies such as system soft water, de-mineralized water.
The innovative point of the utility model is: make soft water or de-mineralized water and recovery waste heat with low-cost low pollution of exhaust steam, and reduce flushing cinder dust discharge and waste vapour visual pollution in a large number, comprehensive benefit is remarkable.System shown in the accompanying drawing is the most preferred embodiment of the utility model, and practical structure is not limited thereto.So,, under the situation that does not break away from the invention aim,, all should belong to the protection domain of the utility model without creationary frame mode similar and the embodiment of designing with this technical scheme if those of ordinary skill in the art is enlightened by it.

Claims (2)

1. an iron-smelting blast furnace flushing cinder waste vapour prepares soft water and utilizes the system of waste heat, comprises shrend circulation slag flushing device, waste vapour refining plant and water generator, it is characterized in that:
Said shrend circulation slag flushing device is made up of flushing cinder water circulation tank [1], flushing cinder water-circulating pump [2], high-temperature slag ditch [3], cinder-flushing groove [4], rotary screen [6], rotating screen guard [7] and the belt of slagging tap [10]; Said high-temperature slag ditch [3] is located at cinder-flushing groove [4] import top; Said cinder-flushing groove [4] stretches into rotary screen [6] inside; The said belt of slagging tap [10] picks out from rotary screen [6] inside, and said rotating screen guard [7] covers rotary screen [6], and said flushing cinder water circulation tank [1] is located at rotary screen [6] below; And link to each other with flushing cinder water-circulating pump [2] by water absorption tube, be connected under high-temperature slag ditch [3] outlet from the rising pipe of flushing cinder water-circulating pump [2];
Said waste vapour refining plant is made up of vapour collect cover [5], waste vapour cleaner [8] and bleed valve [9]; Said vapour collect cover [5] covers the cinder-flushing groove [4] in the above-mentioned shrend circulation slag flushing device; With dry pipe vapour collect cover [5] is linked to each other with waste vapour cleaner [8], said bleed valve [9] links to each other with rotary screen [6] in the above-mentioned shrend circulation slag flushing device;
Said water generator by condensing heat exchanger [11], thermal deaerator [12], finished product water pipe [13], condensate pump [14], polisher [15], MSF device [16], new water pipe [17] and not catch tank [18] form; Said condensing heat exchanger [11] leading portion connects that polisher [15] rising pipe, its back segment prolong link to each other with MSF device [16], its top joins with catch tank [18] not, its underpart condensate pipe and condensate pump [14] join; The top steam outlet pipe of the waste vapour cleaner [8] in said condensing heat exchanger [11] and the above-mentioned waste vapour refining plant links to each other; Said MSF device [16] water-in connects that new water pipe [17], its rising pipe and condensing heat exchanger [11] join, take back that MSF device [16], its condensate pipe also join with condensate pump [14], its underpart concentrates water pipe and inserts the flushing cinder water circulation tank [1] in the above-mentioned shrend circulation slag flushing device after the indirect heating again; Said condensate pump [14] rising pipe and polisher [15] import are joined; Said polisher [15] water outlet gets into heating deoxygenation in the thermal deaerator [12] through aforementioned condensing heat exchanger [11], and said thermal deaerator [12] connects finished product water pipe [13].
2. iron-smelting blast furnace flushing cinder waste vapour according to claim 1 prepares soft water and utilizes the system of waste heat, it is characterized in that, in connecting the waste vapour refining plant, on the dry pipe of vapour collect cover [5] and waste vapour cleaner [8] emergency dump steam tube [19] is set.
CN2012200129610U 2012-01-13 2012-01-13 System for using waste steam of flushing cinder of ironmaking blast furnace to prepare soft water and utilizing waste heat Expired - Fee Related CN202610064U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102557318A (en) * 2012-01-13 2012-07-11 安徽工业大学 Method and system for preparing soft water and utilizing afterheat by using spent steam obtained through ironmaking blast furnace slag washing
CN104279551A (en) * 2013-07-09 2015-01-14 北京亿玮坤节能科技有限公司 Method and system for heating power plant condensate water or supplementing water through blast furnace slag flushing water
CN108913829A (en) * 2018-10-08 2018-11-30 湖南星华能源科技服务有限公司 A kind of slag water quenching steam disappears white haze system and method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102557318A (en) * 2012-01-13 2012-07-11 安徽工业大学 Method and system for preparing soft water and utilizing afterheat by using spent steam obtained through ironmaking blast furnace slag washing
CN104279551A (en) * 2013-07-09 2015-01-14 北京亿玮坤节能科技有限公司 Method and system for heating power plant condensate water or supplementing water through blast furnace slag flushing water
CN108913829A (en) * 2018-10-08 2018-11-30 湖南星华能源科技服务有限公司 A kind of slag water quenching steam disappears white haze system and method

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GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20121219

Termination date: 20170113

CF01 Termination of patent right due to non-payment of annual fee