CN203128593U - Efficient blast furnace slag-washing water waste heat recycling system adopting INBA process - Google Patents

Efficient blast furnace slag-washing water waste heat recycling system adopting INBA process Download PDF

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Publication number
CN203128593U
CN203128593U CN2013200361513U CN201320036151U CN203128593U CN 203128593 U CN203128593 U CN 203128593U CN 2013200361513 U CN2013200361513 U CN 2013200361513U CN 201320036151 U CN201320036151 U CN 201320036151U CN 203128593 U CN203128593 U CN 203128593U
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China
Prior art keywords
blast furnace
inba
exhaust heat
flushing water
water recovery
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CN2013200361513U
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Chinese (zh)
Inventor
毛华芳
田晓杰
严阵
阮祥志
杨婷
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Wisdri Engineering and Research Incorporation Ltd
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Wisdri Engineering and Research Incorporation Ltd
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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
    • C21B2400/074Tower structures for cooling, being confined but not sealed
    • 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
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling
    • 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
    • Y02P10/00Technologies related to metal processing
    • Y02P10/25Process efficiency
    • 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
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies

Abstract

The utility model relates to an efficient blast furnace slag-washing water waste heat recycling system adopting an INBA process. The efficient blast furnace slag-washing water waste heat recycling system adopting the INBA process comprises a graining tower, a rotary drum, a sedimentation tank, a hot water tank and circulating pumps, which are connected in sequence; the efficient blast furnace slag-washing water waste heat recycling system further comprises a cooling tower, an absorption type refrigerating unit and a heating device, which are in parallel connected; the input ends of the cooling tower, the absorption type refrigerating unit and the heating device connected in parallel are connected with the circulating pumps; and the output ends of the cooling tower, the absorption type refrigerating unit and the heating device connected in parallel are connected with the graining tower. The efficient blast furnace slag-washing water waste heat recycling system adopting the INBA process can be used for solving the seasonal problem of blast furnace slag-washing water waste heat recycling adopting the INBA process, improving the slag-washing water waste heat recovery rate, realizing the sufficient recovery of the slag-washing water waste heat and achieving the purpose of saving energy and reducing emission.

Description

A kind of INBA of blast furnace efficiently using exhaust heat of slag flushing water recovery system
Technical field
The utility model relates to the waste heat recovery field of metallurgy industry, more particularly, relates to a kind of INBA of blast furnace efficiently using exhaust heat of slag flushing water recovery system.
Background technology
Steel industry is the energy consumption rich and influential family, and can produce a large amount of waste heats in consumes energy, takes full advantage of the new opportunity that this part waste heat will become the steel industry development.Along with the progress of science and technology, the middle high-temperature residual heat of Steel Plant has progressively obtained effective recycling, and the utilization ratio of low temperature exhaust heat is very low, and to 2011, Steel Plant's low temperature exhaust heat utilization ratio only had an appointment 1%.
In blast furnace smelting process, every production 1t molten iron produces the blast furnace slag of about 0.3t, the heat that blast furnace slag is taken away accounts for 16% of blast furnace total energy consumption, these heats substantially all enter flushing cinder water, and along with the circulation of flushing cinder water is discharged into the atmosphere, water resource waste and thermal pollution have also been caused in the time of energy dissipation.
A kind of INBA method flushing cinder technology of the normal employing of Steel Plant at present; this technology is directly delivered to the granulation tower with the high-temperature liquid state slag; the high velocity flow shrend cooling that in the granulation tower, is ejected; form the particulate state grain slag; slag-water slurry is transported to and carries out the pulp water separation in the rotary drum; slag after the separation is transported by the grain slag belt; and remaining flushing cinder water temp generally can reach about 85 ℃; the flushing cinder water of high temperature enters settling tank by sluice; be delivered to cooling tower cooling back cycling and reutilization behind preliminary sedimentation, this part heat all is dissipated in the process of circulation.At present, though the idea of many this part waste heats of recovery is also arranged, such as with flushing cinder water and outside cold water heat exchange, problem such as cold water obtains being used for heating etc. behind the heat, and it is low all to be difficult to solve efficient, and System production time is lacked, and rate of return on investment is low can't be applied.
In the most of area of China, the summer weather sweltering heat, humidity is very big, and blast furnace blowing engine is increased dehumidifying device has unusual effect to aspects such as blast furnace stable yields, Jie Jiao and reduction gas blower energy consumptions, and the blast furnace dehumidifying air blast also becomes the energy-saving and emission-reduction project of country's 12 iron and steel enterprise's keypoint recommendations.At present, dehumidifying Blast Technology on BF substantially all adopts electric power or steam driven, the running cost height, and rate of return on investment is low, so cause this technology to be difficult to popularize.In addition, China's most of area cold in winter, the sweltering heat in summer, plant area of steel mill and near residential quarter need be expended lot of energy and be used for winter heating and summer cooling gas.
The utility model content
The technical problems to be solved in the utility model is, a kind of INBA of blast furnace efficiently using exhaust heat of slag flushing water recovery system is provided.
The technical scheme that its technical problem that solves the utility model adopts is: construct a kind of INBA of blast furnace efficiently using exhaust heat of slag flushing water recovery system, comprise the granulation tower, rotary drum, settling tank, hot tub and the recycle pump that connect successively, also comprise the cooling tower, absorption refrigeration unit, the heating plant that are connected in parallel; Input terminus after described cooling tower, absorption refrigeration unit, the heating plant parallel connection is connected with described recycle pump, and output terminal is connected with described granulation tower.
In the INBA of blast furnace efficiently using exhaust heat of slag flushing water recovery system described in the utility model, be provided with filtration unit between described settling tank and the hot tub.
In the INBA of blast furnace efficiently using exhaust heat of slag flushing water recovery system described in the utility model, the adjacent described hot tub of described settling tank, the bottom of described hot tub is lower than the bottom of described settling tank.
In the INBA of blast furnace efficiently using exhaust heat of slag flushing water recovery system described in the utility model, described system also comprises the cold user, and described cold user is connected with described absorption refrigeration unit, and described cold user is air blow for removing moisture device or interchanger.
In the INBA of blast furnace efficiently using exhaust heat of slag flushing water recovery system described in the utility model, the branch road at described cooling tower, absorption refrigeration unit and heating plant place is provided with trip valve.
In the INBA of blast furnace efficiently using exhaust heat of slag flushing water recovery system described in the utility model, the input terminus of described absorption refrigeration unit and heating plant parallel branch is provided with chemicals dosing plant.
In the INBA of blast furnace efficiently using exhaust heat of slag flushing water recovery system described in the utility model, the branch road at described absorption refrigeration unit and heating plant place is provided with sampling unit.
In the INBA of blast furnace efficiently using exhaust heat of slag flushing water recovery system described in the utility model, described absorption refrigeration unit is lithiumbromide-water refrigerating machine group.
In the INBA of blast furnace efficiently using exhaust heat of slag flushing water recovery system described in the utility model, described settling tank and the hot tub outside are provided with insulation cover plate and insulation shell.
In the INBA of blast furnace efficiently using exhaust heat of slag flushing water recovery system described in the utility model, described system also comprises condensate make-up piping, and described condensate make-up piping directly is connected with described granulation tower.
Implement the INBA of blast furnace efficiently using exhaust heat of slag flushing water recovery system of the present utility model, has following beneficial effect: be stored in the hot water high purity in hot tub of flushing cinder water through obtaining behind rotary drum and the settling tank separating and filtering, reduce bad phenomenon such as Corrosion of Pipeline and fouling, hot water is sustainable to be recycled.Hot water in the hot tub by recycle pump with delivery to cooling tower, absorption refrigeration unit or heating plant, realized refrigeration in summer, dehumidification and winter heating.Also be provided with cooling tower in the system, improved the stability of system, when absorption refrigeration unit and heating plant do not need work or maintenance, also do not influence the works better that blast furnace slag is handled.The utility model has solved the seasonal problem that blast furnace INBA using exhaust heat of slag flushing water reclaims, and has improved the using exhaust heat of slag flushing water rate of recovery, has realized the abundant recovery of using exhaust heat of slag flushing water, reaches the purpose of energy-saving and emission-reduction.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the utility model structural representation of blast furnace INBA using exhaust heat of slag flushing water recovery system efficiently.
Embodiment
Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast accompanying drawing and describe embodiment of the present utility model in detail.
As shown in Figure 1, the utility model efficiently blast furnace INBA using exhaust heat of slag flushing water recovery system comprise granulation tower 1, rotary drum 2, settling tank 3, hot tub 4, recycle pump 5, cooling tower 6, absorption refrigeration unit 8 and heating plant 9.Wherein, granulation tower 1, rotary drum 2, settling tank 3, hot tub 4 and recycle pump 5 are connected successively, and cooling tower 6, absorption refrigeration unit 8 and heating plant 9 are connected in parallel.Input terminus after cooling tower 6, absorption refrigeration unit 8, heating plant 9 parallel connections is connected with recycle pump 5, and output terminal is connected with granulation tower 1.Absorption refrigeration unit 8 can be tried one's best and be arranged near hot tub 4, also can reduce the cost of system with the thermosteresis that reduces system.
Flushing cinder water contacts with the blast furnace slag of high-temperature fusion in granulation tower 1, produces a large amount of steam and high temperature flushing cinder water.Slag-water slurry is delivered to rotary drum 2 from granulation tower 1, realizes separating of slag and water that in rotary drum 2 slag is transported to the grain slag stockyard by belt, and water then enters the settling tank 3 under the rotary drum 2.Residual most of solid impurity particle is deposited on settling tank 3 bottoms in the flushing cinder water, and the hot water high purity in the hot tub 4 can be avoided corrosive pipeline or fouling.
Hot water in the hot tub 4 by recycle pump 5 with delivery to cooling tower 6, absorption refrigeration unit 8 or heating plant 9, can realize summer refrigeration and winter heating.Be provided with cooling tower 6 in the system, improved the stability of system, when absorption refrigeration unit 8 and heating plant 9 do not need work or maintenance, also do not influence the works better that blast furnace slag is handled.
Further, system of the present utility model also comprises cold user 10, and cold user 10 can be devices such as air blow for removing moisture device or interchanger.Cold user 10 is connected with absorption refrigeration unit 8, and absorption refrigeration unit 8 can be cold user 10 cold is provided.The air blow for removing moisture device can be the blast furnace blowing engine dehumidification, can be the room cooling by interchanger.
Further, the master loop at recycle pump 5 places is provided with trip valve 12, the branch road at cooling tower 6 places is provided with trip valve 14, the branch road at absorption refrigeration unit 8 places is provided with trip valve 15, the branch road at heating plant 9 places is provided with trip valve 16, and the input terminus of absorption refrigeration unit 8 and heating plant 9 parallel branches is provided with trip valve 13.
In summer, trip valve 12, trip valve 13 and trip valve 15 are opened, trip valve 14 and trip valve 16 are all closed, the hot water that comes out from recycle pump 5 is sent into the producer of absorption refrigeration unit 8 by pipeline 17, pipeline 18 and pipeline 19, realizes heat exchange by vaporizer and the condenser of absorption refrigeration unit 8.Absorption refrigeration unit 8 in the present embodiment is lithiumbromide-water refrigerating machine group.8 work are freezed thereby hot water drives the absorptionmachine group, and the cold of generation is delivered to the air blow for removing moisture device or provides cold by interchanger to the user by the refrigerant medium.Directly return granulation tower 1 from the water at low temperature that producer flows out by pipeline 21, pipeline 23 and pipeline 25, the using exhaust heat of slag flushing water that forms a sealing drives refrigeration system.
In the winter time, close trip valve 14 and trip valve 15, open trip valve 12, trip valve 13 and trip valve 16, hot water is sent into heating plant 9 by pipeline 17 and pipeline 18, and hot water and the external world carry out heat exchange, provide heat to the user.Then directly return granulation tower 1 through piping 22, pipeline 23 and pipeline 25 from the water at low temperature that heating plant 9 flows out, form the warm recycle system of flushing cinder hydromining of another sealing.
In some month in spring, autumn; when perhaps unit cooler 8 and heating system need be overhauled; unit cooler 8 and heating plant 9 may not need operation; trip valve 13, trip valve 15 and trip valve 16 are all closed; trip valve 12 and trip valve 14 are opened; hot water all entered cooling tower 6 by pipeline 24 and cooled off this moment, returned granulation tower 1 then, guaranteed the works better of blast furnace slag treatment system.
Further, between settling tank 3 and hot tub 4 filtration unit can be set, the pulp water that liquidates filters, and improves the cleanliness factor of hot water.Settling tank 3 adjacent hot tubs 4, the bottom of hot tub 4 is lower than the bottom of settling tank 3, and the water in the settling tank 3 can flow in the hot tub 4 smoothly, and the assurance system can stablize lasting hot-water supply.
Further, the input terminus of absorption refrigeration unit 8 and heating plant 9 parallel branches is provided with chemicals dosing plant 7, can regulate the pH value, hardness, calcium, magnesium ion concentration of hot water etc., improves water quality, thereby reduces bad phenomenon such as Corrosion of Pipeline and fouling.
Further, the branch road at absorption refrigeration unit 8 and heating plant 9 places is provided with sampling unit 11, and water quality is detected in the sampling back, can control the dose that adds of chemicals dosing plant 7 according to detected result.
Further, recycle pump 5 has two at least, and two or more recycle pump 5 parallel connections guarantee the normal conveying of hydraulic pressure and hot water.
Further, in order to reduce the thermosteresis of system, improve the flushing cinder water application efficiency, the transport pipe of hot tub 4, settling tank 3 and total system all needs to be incubated and moistureproof the processing.Settling tank 3 in the present embodiment and hot tub 4 outsides are provided with insulation cover plate and insulation shell.
Further, system of the present utility model also comprises condensate make-up piping 26, and condensate make-up piping 26 directly is connected with granulation tower 1, guarantees the sufficient supplies of flushing cinder water.
The utility model can switch to different flushing cinder water treatment modes according to the difference in season and the needs of production.The blast furnace slag quenching water of high temperature is directly used in and drives unit cooler 8 or be used for heating, thermo-efficiency height.In addition, be summer during refrigeration, and be winter during heating that the two mutually combines, and has solved the seasonal problem that blast furnace INBA using exhaust heat of slag flushing water reclaims, and has improved the using exhaust heat of slag flushing water rate of recovery.The utility model can utilize by the high-temperature residual heat that blast furnace slag quenching water is contained more fully, reaches energy-conservation and purpose environmental protection.
By reference to the accompanying drawings embodiment of the present utility model is described above; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic; rather than it is restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not breaking away under the scope situation that the utility model aim and claim protect, also can make a lot of forms, these all belong within the protection of the present utility model.

Claims (10)

1. a blast furnace INBA using exhaust heat of slag flushing water recovery system efficiently is characterized in that, comprises the granulation tower, rotary drum, settling tank, hot tub and the recycle pump that connect successively, also comprises the cooling tower, absorption refrigeration unit, the heating plant that are connected in parallel; Input terminus after described cooling tower, absorption refrigeration unit, the heating plant parallel connection is connected with described recycle pump, and output terminal is connected with described granulation tower.
2. the INBA of blast furnace efficiently using exhaust heat of slag flushing water recovery system according to claim 1 is characterized in that, is provided with filtration unit between described settling tank and the hot tub.
3. the INBA of blast furnace efficiently using exhaust heat of slag flushing water recovery system according to claim 1 is characterized in that, the adjacent described hot tub of described settling tank, and the bottom of described hot tub is lower than the bottom of described settling tank.
4. the INBA of blast furnace efficiently using exhaust heat of slag flushing water recovery system according to claim 1 is characterized in that described system also comprises the cold user, and described cold user is connected with described absorption refrigeration unit, and described cold user is air blow for removing moisture device or interchanger.
5. the INBA of blast furnace efficiently using exhaust heat of slag flushing water recovery system according to claim 1 is characterized in that the branch road at described cooling tower, absorption refrigeration unit and heating plant place is provided with trip valve.
6. the INBA of blast furnace efficiently using exhaust heat of slag flushing water recovery system according to claim 1 is characterized in that the input terminus of described absorption refrigeration unit and heating plant parallel branch is provided with chemicals dosing plant.
7. the INBA of blast furnace efficiently using exhaust heat of slag flushing water recovery system according to claim 1 is characterized in that the branch road at described absorption refrigeration unit and heating plant place is provided with sampling unit.
8. the INBA of blast furnace efficiently using exhaust heat of slag flushing water recovery system according to claim 1 is characterized in that described absorption refrigeration unit is lithiumbromide-water refrigerating machine group.
9. the INBA of blast furnace efficiently using exhaust heat of slag flushing water recovery system according to claim 1 is characterized in that, described settling tank and the hot tub outside are provided with insulation cover plate and insulation shell.
10. the INBA of blast furnace efficiently using exhaust heat of slag flushing water recovery system according to claim 1 is characterized in that described system also comprises condensate make-up piping, and described condensate make-up piping directly is connected with described granulation tower.
CN2013200361513U 2013-01-23 2013-01-23 Efficient blast furnace slag-washing water waste heat recycling system adopting INBA process Active CN203128593U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103866058A (en) * 2014-01-13 2014-06-18 中冶南方工程技术有限公司 Triple-generation system for utilizing slag-washing water afterheat by using blast furnace drum method
CN104567442A (en) * 2014-12-31 2015-04-29 北京京诚科林环保科技有限公司 Afterheat refrigerating system for slag flushing water of blast furnace
CN104949184A (en) * 2015-07-06 2015-09-30 珠海格力电器股份有限公司 Water waste heat recovery heating system and water waste heat recovery heating method
CN107894170A (en) * 2017-11-08 2018-04-10 中科合肥煤气化技术有限公司 A kind of high temperature furnace slag heat recovery refrigerating plant
CN108315513A (en) * 2017-01-16 2018-07-24 宝山钢铁股份有限公司 Blast furnace grain slag processing system and Handling Blast Furnace Granulated Slag method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103866058A (en) * 2014-01-13 2014-06-18 中冶南方工程技术有限公司 Triple-generation system for utilizing slag-washing water afterheat by using blast furnace drum method
CN103866058B (en) * 2014-01-13 2015-11-11 中冶南方工程技术有限公司 Blast furnace rotary drum method using exhaust heat of slag flushing water utilizes combined supply system
CN104567442A (en) * 2014-12-31 2015-04-29 北京京诚科林环保科技有限公司 Afterheat refrigerating system for slag flushing water of blast furnace
CN104949184A (en) * 2015-07-06 2015-09-30 珠海格力电器股份有限公司 Water waste heat recovery heating system and water waste heat recovery heating method
CN104949184B (en) * 2015-07-06 2018-01-23 珠海格力电器股份有限公司 Water waste heat recovery heating system and water waste heat recovery heating method
CN108315513A (en) * 2017-01-16 2018-07-24 宝山钢铁股份有限公司 Blast furnace grain slag processing system and Handling Blast Furnace Granulated Slag method
CN107894170A (en) * 2017-11-08 2018-04-10 中科合肥煤气化技术有限公司 A kind of high temperature furnace slag heat recovery refrigerating plant

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