CN104032054A - Triple co-supply system for utilization of waste heat of blast furnace bottom-filtration-method slag flushing water - Google Patents
Triple co-supply system for utilization of waste heat of blast furnace bottom-filtration-method slag flushing water Download PDFInfo
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- CN104032054A CN104032054A CN201410107406.XA CN201410107406A CN104032054A CN 104032054 A CN104032054 A CN 104032054A CN 201410107406 A CN201410107406 A CN 201410107406A CN 104032054 A CN104032054 A CN 104032054A
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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Abstract
The invention relates to a triple co-supply system for utilization of waste heat of blast furnace bottom-filtration-method slag flushing water. The triple co-supply system comprises a granulation apparatus; the granulation apparatus is successively communicated with a slag sluice, a filter tank and a waste heat reservoir; the waste heat reservoir is connected with the first inlet of a heat exchange apparatus through a waste heat water-supply pump group; the first outlet of the heat exchange apparatus is communicated with a granulation reservoir, and the second inlet of the heat exchange apparatus is respectively connected with a heating user and the first outlet of a cooling mechanism through a heating water-supply pump group; the heating user and the first inlet of the cooling mechanism are communicated with the second outlet of the heat exchange apparatus; the second inlet of the cooling mechanism is communicated with an indoor cooling user and a dehumidified blasting user; the indoor cooling user and the dehumidified blasting user are communicated with the second outlet of the cooling mechanism; and the granulation reservoir is communicated with the granulation apparatus through a granulation water-supply pump group. The system is used for triple co-supply of heating, cooling and blast furnace dehumidified blasting and has the advantages of high thermal efficiency and stable water quality.
Description
Technical field
The present invention relates to a kind of bootstrap system, relate in particular to a kind of blast furnace bottom filter method using exhaust heat of slag flushing water and utilize combined supply system.
Background technology
The energy is the basis that the mankind depend on for existence.China is having the second in the world great energy system, but Energy resources occupancy volume is only 1/2 of world standard per capita, and whole energy use efficiency is seriously on the low side with respect to developed country.In the face of this reality, the task of save energy is urgent and arduous.Steel industry, as mainstay of the national economy industry, plays an important role in China's modernization construction, but is power consumption and heavy polluter, is consuming the energy, is promoting when material changes to produce a large amount of residual heat and energies.The recovery utilization rate of iron and steel industry residual heat and energy is quite low at present.As the waste heat of blast furnace slag quenching water, mostly consumed.Therefore the low temperature exhaust heat of steel industry exists huge recovery potentiality.
End filter method technique is one of current Steel Plant residues processing technique; this technique is that molten slag is washed into after grain slag by granulating device in stokehold; slag-water slurry flows into filter tank by sluice and dewaters; after filtering, clear water is by granulation working shaft cycling and reutilization, and the dehydration grain slag being retained in filter tank is removed outward transport with clamshell-equipped crane.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 in the time of energy dissipation, have also been caused.
At present, domestic the utilization of blast furnace slag quenching water waste heat is mainly concentrated to northerly iron and steel enterprise, they are only using blast furnace slag quenching water heat as winter heating thermal source, there is no the thermal source as indoor refrigeration or dehumidified blast summer, do not realize blast furnace slag quenching water " three alliances ", cause UTILIZATION OF VESIDUAL HEAT IN rate variance, therefore need further exploitation using exhaust heat of slag flushing water to utilize potential.In existing flushing cinder water practical application engineering, part steel mill, using flushing cinder water as heating agent, directly delivers to heating end.But because pulp water contains a large amount of impurity, very easily cause interchanger and end equipment all to stop up, cause heating system to lose efficacy.When interchanger in use for some time, because fouling seriously can only be changed again, with high costs.For contained impurity and suspended substance in flushing cinder water, if adopt conventional thin matter filtrate to filter, very easily cause slag particle to harden in filtration unit, filtering system was lost efficacy; If utilize conventional dosing method to carry out adding of agent,, because medicament under high-temperature condition volatilizees in a large number, cost is huge.Therefore need to develop a kind of efficient, feasible blast furnace slag quenching water bootstrap system, can be used for heating winter, can be used for indoor refrigeration or dehumidified blast summer, improve efficiency of energy utilization.
Summary of the invention
It is reliable that technical problem to be solved by this invention is to provide water quality, stablize feasible blast furnace bottom filter method using exhaust heat of slag flushing water and utilize combined supply system, this system can be used for heating by high temperature flushing cinder water winter, and for indoor refrigeration or dehumidified blast, utilized waste heat the whole year summer.
The technical solution adopted in the present invention is: a kind of blast furnace bottom filter method using exhaust heat of slag flushing water utilizes combined supply system, it comprises granulating device, described granulating device is positioned at the upstream of sluice, the downstream of described sluice is provided with filter tank, described filter tank is communicated with heat accumulate regulation pond, described heat accumulate regulation pond comprises waste heat water reservoir and granulation water reservoir, the outlet of described waste heat water reservoir is connected with the first import of heat-exchanger rig by waste heat working shaft group, the first outlet of heat-exchanger rig is connected with the import of granulation water reservoir, the second import of heat-exchanger rig is connected with heating user's outlet and the first outlet of refrigeration mechanism respectively by heating working shaft group, the first import of heating user's import and refrigeration mechanism is connected with the second outlet of heat-exchanger rig, the second import of refrigeration mechanism is connected with indoor refrigeration consumer outlet and dehumidified blast subscriber's outlet, indoor refrigeration consumer import and dehumidified blast user import are connected with the second outlet of refrigeration mechanism, the outlet of described granulation water reservoir is connected with granulating device by granulation working shaft group.
Press such scheme, described waste heat water reservoir is connected by partition wall with granulation water reservoir, and the top of waste heat water reservoir and granulation water reservoir is connected.
Press such scheme, the top of described filter tank, waste heat water reservoir and granulation water reservoir is provided with heat-preserving cover plate, and the wall of described filter tank, waste heat water reservoir and granulation water reservoir is provided with insulation shell, to reduce the heat dissipation capacity of hot water for slag flushing.
Press such scheme, described granulation water reservoir is connected with the vapor-recovery unit that is positioned at granulating device top by vapor recovery spray pump group, not only makes full use of system latent heat, and reduces steam and dissipate, and realizes energy-conserving and environment-protective.
Press such scheme, the ingress of described waste heat water reservoir, water side, filter tank arranges filter residue screen, to improve waste heat water reservoir influent quality.
Connect such scheme, described heat-exchanger rig adopts board-like or tubular heat exchange device, has the features such as heat exchange efficiency is high, corrosion-resistant and less scaling.
Press such scheme, the first import of described heat-exchanger rig is connected with the outlet of chemically-cleaning device by chemical cleaning pump group, and the import of chemically-cleaning device is connected with the first outlet of heat-exchanger rig.The regular heat exchanging device of this chemically-cleaning device cleans, and extends heat-exchanger rig work-ing life, saves cost, solves heat-exchanger rig scale problems.
System of the present invention is used for heating winter, and for indoor refrigeration or dehumidified blast, realize using exhaust heat of slag flushing water utilization " three alliances " summer, and using exhaust heat of slag flushing water is utilized the whole year, and UTILIZATION OF VESIDUAL HEAT IN efficiency is high.
From granulating device high temperature flushing cinder water out, enter filter tank, the water in filter tank enters waste heat water reservoir, and waste heat working shaft group is utilized for user from the water suction of waste heat water reservoir, backwater enters granulation water reservoir.When waste heat working shaft group is not worked, the water energy overflow of waste heat water reservoir, to granulation water reservoir, does not affect slag and processes the use of the granulation recycle system.Using exhaust heat of slag flushing water utilization has the recycle system of one's own, not associated with the slag processing granulation recycle system, does not whenever all affect the operation of slag disposal system.Heat-exchanger rig adopts board-like or tubular heat exchange device, has the features such as heat exchange efficiency is high, corrosion-resistant and less scaling.
In the present invention, described heat accumulate regulation pond has increased hot water savings amount, has overcome that the discontinuous thermal water source who causes of tap cinder is not enough, water temperature de-stabilising effect, can provide stable thermal source for heating and refrigeration consumer.Described heat accumulate regulation pond also possesses heat accumulation function, keeps water temperature in user's claimed range, improves security of system, guarantees subsequent user continuous and steady operation.
The present invention establishes a heat accumulate regulation pond behind filter tank; heat accumulate regulation pond is divided into waste heat water reservoir and granulation water reservoir two portions; filter tank hot water for slag flushing in blast furnace is out accumulated in the waste heat water reservoir in heat accumulate regulation pond through precipitation overflow; after the pressurization of waste heat working shaft group, enter heat-exchanger rig; flushing cinder water after heat exchange cooling is got back in granulation water reservoir, through granulation working shaft group flushing cinder, uses.During summer, the heat-eliminating medium in heat-exchanger rig after heat exchange heats up is delivered to refrigeration mechanism through heating working shaft group, for refrigeration and blast furnace blast dehumidification; In the time of in the winter time, the heat-eliminating medium in heat-exchanger rig after heat exchange heats up is delivered to heating user through heating working shaft group, realizes blast furnace slag quenching water UTILIZATION OF VESIDUAL HEAT IN " three alliances "; When waste heat working shaft group is not worked, the water energy overflow of waste heat water reservoir, to granulation water reservoir, does not affect slag and processes the use of the granulation recycle system; The flushing cinder water of granulation water reservoir is delivered to through vapor recovery spray pump group the vapor-recovery unit of being located at granulating device top, to reduce steam, dissipates, and makes full use of system latent heat.System is provided with chemically-cleaning device, and by chemical cleaning pump group routine cleaning heat-exchanger rig, the slag particle of avoiding heat-exchanger rig life-time service to cause hardens.
Beneficial effect of the present invention is: 1, this blast furnace bottom filter method using exhaust heat of slag flushing water utilizes combined supply system to have the recycle system of one's own, not associated with the slag processing granulation recycle system, does not whenever all affect the operation of slag disposal system.2, high temperature flushing cinder water is used for heating winter, and for indoor refrigeration or dehumidified blast, realize blast furnace slag quenching water UTILIZATION OF VESIDUAL HEAT IN " three alliances " summer, and using exhaust heat of slag flushing water is utilized the whole year, and UTILIZATION OF VESIDUAL HEAT IN efficiency is high.3, heat accumulate regulation pond possesses heat accumulation function, also increase hot water savings amount, overcome that the discontinuous thermal water source who causes of tap cinder is not enough, water temperature de-stabilising effect, can provide stable thermal source for heating and refrigeration consumer, improve security of system, guarantee subsequent user steady running.4, system is provided with vapor recovery spray pump group, can make full use of slag system latent heat, reduces steam and dissipates, not only energy-conservation but also environmental protection.5, system is provided with chemically-cleaning device, and regularly heat exchanging device inside is cleaned, and extends heat-exchanger rig work-ing life, saves cost, solves heat-exchanger rig scale problems.
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the present of invention.
In figure: 1, granulating device; 2, sluice; 3, filter tank; 4, filter residue screen 5, waste heat water reservoir; 6, granulation water reservoir; 7, waste heat working shaft group; 8, heat accumulate regulation pond; 9, heat-exchanger rig; 10, refrigeration mechanism; 11, heating user; 12, indoor refrigeration consumer; 13, dehumidified blast user; 14, heating working shaft group, 15, chemically-cleaning device; 16, chemical cleaning pump group; 17, granulation working shaft group; 18, vapor recovery spray pump group; 19, vapor-recovery unit; 20 ~ 42, trip valve; 101, hot water operated absorption refrigerating machine's group; 102, heat-eliminating medium transferpump.
Embodiment
Below in conjunction with accompanying drawing, further illustrate embodiments of the invention.
Referring to Fig. 1, a kind of blast furnace bottom filter method using exhaust heat of slag flushing water utilizes combined supply system, it comprises the granulating device 1 matching with blast furnace, described granulating device 1 is positioned at the upstream of sluice 2, the downstream of sluice 2 is provided with filter tank 3, described filter tank 3 is communicated with heat accumulate regulation pond 8, and described heat accumulate regulation pond 8 comprises waste heat water reservoir 5 and granulation water reservoir 6, described waste heat water reservoir 5 is connected by partition wall with granulation water reservoir 6, and the top of waste heat water reservoir 5 and granulation water reservoir 6 is connected, the outlet of described waste heat water reservoir 5 is connected with the first import of heat-exchanger rig 9 by waste heat working shaft group 7, the first import of heat-exchanger rig 9 is connected with the outlet of chemically-cleaning device 15 by chemical cleaning pump group 16, the first outlet of heat-exchanger rig 9 is connected with the import of granulation water reservoir 6 and the import of chemically-cleaning device 15 respectively, the second import of heat-exchanger rig 9 is connected with heating user 11 outlet and the first outlet of refrigeration mechanism 10 respectively by heating working shaft group 14, the first import of heating user 11 import and refrigeration mechanism 10 is connected with the second outlet of heat-exchanger rig 9, the second import of refrigeration mechanism 10 is connected with indoor refrigeration consumer 12 outlets and dehumidified blast user 13 outlets, indoor refrigeration consumer 12 imports and dehumidified blast user 13 imports are connected with the second outlet of refrigeration mechanism 10, the outlet of described granulation water reservoir 6 is connected with granulating device 1 by granulation working shaft group 17, described granulation water reservoir 6 is connected with the vapor-recovery unit 19 that is positioned at granulating device 1 top by vapor recovery spray pump group 18, not only makes full use of system latent heat, and reduces steam and dissipate, and realizes energy-conserving and environment-protective.
In the present embodiment, the top of described filter tank 3, waste heat water reservoir 5 and granulation water reservoir 6 is provided with heat-preserving cover plate, and the wall of described filter tank 3, waste heat water reservoir 5 and granulation water reservoir 6 is provided with insulation shell, to reduce the heat dissipation capacity of hot water for slag flushing.The ingress of described waste heat water reservoir 5,3 water sides, filter tank arrange filter residue screen 4, to improve waste heat water reservoir 5 influent qualities.The described regular heat exchanging device 9 of chemically-cleaning device 15 cleans, and extends 9 work-ing lifes of heat-exchanger rig, saves cost, solves heat-exchanger rig 9 scale problems.Described heat-exchanger rig 9 adopts board-like or tubular heat exchange device, has the features such as heat exchange efficiency is high, corrosion-resistant and less scaling.Described refrigeration mechanism 10 comprises that hot water operated absorption refrigerating machine organizes 101 and heat-eliminating medium transferpump 102.
Flushing cinder water contacts with the blast furnace slag of high-temperature fusion at granulating device 1; produce a large amount of steam and high temperature flushing cinder water; slag-water slurry enters filter tank 3 by sluice 2 and carries out pulp water separation; slag is removed outward transport by clamshell-equipped crane; water is accumulated in waste heat water reservoir 5 after filter residue screen 4; waste heat water reservoir 5 has precipitation, filtering function, further improves system water quality.7 water intakings of the below from waste heat water reservoir 5 of waste heat working shaft group, deliver into heat-exchanger rig 9 outside adherence pressure is backward, and in heat-exchanger rig 9 the insides, flushing cinder water and de-salted water (soft water) carry out heat exchange, and flushing cinder water temperature reduces, and de-salted water (soft water) temperature raises; Granulation water reservoir 6 is got back in the water outlet after heat exchange cooling of flushing cinder water.In summer, the cold that de-salted water after intensification (soft water) produces after refrigeration mechanism 10 is delivered to indoor refrigeration consumer 12 or dehumidified blast user 13 by coolant media, now trip valve 26 and trip valve 28 are opened, trip valve 25 and trip valve 27 are closed, de-salted water after being utilized (soft water) is again got back to heat-exchanger rig 9 through heating working shaft group 14 and is again carried out heat exchange, forms a cooling cycle system.In the winter time, refrigeration mechanism 10 break-ofves, close trip valve 26 and trip valve 28, open trip valve 25 and trip valve 27, de-salted water after intensification (soft water) enters heating user 11, backwater is again got back to heat-exchanger rig 9 by heating working shaft group 14 and is again carried out heat exchange afterwards, forms the heating circulation system of another sealing.17 water intakings of the below from granulation water reservoir 6 of granulation working shaft group, enter granulating device 1 by transport pipe after adherence pressure, form slag and process the granulation recycle system.In some month in spring, autumn; or when unit cooler and heating system need to be overhauled; unit cooler and heating system may not need operation; now trip valve 20 and trip valve 24 are all closed; the flushing cinder water overflow of waste heat water reservoir 5, to granulation water reservoir 6, is guaranteed the normal work of blast furnace slag processing system.At heat-exchanger rig, move after for some time, need heat exchanging device to clean (when heat-exchanger rig normally uses, open trip valve 22 and trip valve 24, close trip valve 35 and trip valve 37), now close trip valve 22 and trip valve 24, open trip valve 35 and trip valve 37, open chemical cleaning pump group 16 heat exchanging devices and clean.Vapor recovery spray pump group 18 entrances are taken from granulation water reservoir 6, and it is delivered to cleaner flushing cinder water the vapor-recovery unit 19 at granulating device 1 top, for the high-temperature steam at retrieving arrangement top.
The present invention's transport pipe used all needs to be incubated and moistureproof processing, reduces the loss of heat in Pipe transfer process.
Claims (8)
1. a blast furnace bottom filter method using exhaust heat of slag flushing water utilizes combined supply system, it comprises granulating device, described granulating device is positioned at the upstream of sluice, the downstream of described sluice is provided with filter tank, it is characterized in that: described filter tank is communicated with heat accumulate regulation pond, described heat accumulate regulation pond comprises waste heat water reservoir and granulation water reservoir, the outlet of described waste heat water reservoir is connected with the first import of heat-exchanger rig by waste heat working shaft group, the first outlet of heat-exchanger rig is connected with the import of granulation water reservoir, the second import of heat-exchanger rig is connected with heating user's outlet and the first outlet of refrigeration mechanism respectively by heating working shaft group, the first import of heating user's import and refrigeration mechanism is connected with the second outlet of heat-exchanger rig, the second import of refrigeration mechanism is connected with indoor refrigeration consumer outlet and dehumidified blast subscriber's outlet, indoor refrigeration consumer import and dehumidified blast user import are connected with the second outlet of refrigeration mechanism, the outlet of described granulation water reservoir is connected with granulating device by granulation working shaft group.
2. blast furnace bottom filter method using exhaust heat of slag flushing water as claimed in claim 1 utilizes combined supply system, it is characterized in that: described waste heat water reservoir is connected by partition wall with granulation water reservoir, and the top of waste heat water reservoir and granulation water reservoir is connected.
3. blast furnace bottom filter method using exhaust heat of slag flushing water as claimed in claim 1 or 2 utilizes combined supply system; it is characterized in that: the top of described filter tank, waste heat water reservoir and granulation water reservoir is provided with heat-preserving cover plate, the wall of described filter tank, waste heat water reservoir and granulation water reservoir is provided with insulation shell.
4. blast furnace bottom filter method using exhaust heat of slag flushing water as claimed in claim 3 utilizes combined supply system, it is characterized in that: described granulation water reservoir is connected with the vapor-recovery unit that is positioned at granulating device top by vapor recovery spray pump group.
5. blast furnace bottom filter method using exhaust heat of slag flushing water as claimed in claim 3 utilizes combined supply system, it is characterized in that: the ingress of described waste heat water reservoir is provided with filter residue screen.
6. blast furnace bottom filter method using exhaust heat of slag flushing water as claimed in claim 1 utilizes combined supply system, it is characterized in that: described heat-exchanger rig adopts board-like or tubular heat exchange device.
7. the filter of the blast furnace bottom as described in claim 1 or 6 method using exhaust heat of slag flushing water utilizes combined supply system, it is characterized in that: the first import of described heat-exchanger rig is connected with the outlet of chemically-cleaning device by chemical cleaning pump group, the import of chemically-cleaning device is connected with the first outlet of heat-exchanger rig.
8. the arbitrary described blast furnace bottom filter of claim 1-7 method using exhaust heat of slag flushing water utilizes the application of combined supply system, it is characterized in that: described application be winter for heating, for indoor refrigeration or dehumidified blast, realize using exhaust heat of slag flushing water utilization " three alliances " summer.
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| CN201410107406.XA CN104032054B (en) | 2014-01-13 | 2014-03-21 | Blast furnace bottom filter method using exhaust heat of slag flushing water utilizes combined supply system |
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| CN201410012979 | 2014-01-13 | ||
| CN201410012979.4 | 2014-01-13 | ||
| CN201410107406.XA CN104032054B (en) | 2014-01-13 | 2014-03-21 | Blast furnace bottom filter method using exhaust heat of slag flushing water utilizes combined supply system |
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| CN104032054B CN104032054B (en) | 2015-12-30 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807337A (en) * | 2015-04-25 | 2015-07-29 | 成都中冶节能环保工程有限公司 | Current source-based bipolar oscillating type waste heat power generating system |
| CN112619250A (en) * | 2021-01-07 | 2021-04-09 | 戚晓芳 | Metal smelting blast furnace slag bottom filtration method filtration system |
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| CN2748467Y (en) * | 2004-11-05 | 2005-12-28 | 马鞍山钢铁股份有限公司 | Water-quenching slag-washing water treatment device for blast furnace slag |
| CN102864255A (en) * | 2012-09-19 | 2013-01-09 | 中冶南方工程技术有限公司 | Safety control method for blast furnace minter process slag treatment granulation water supply system |
| CN203768381U (en) * | 2014-01-13 | 2014-08-13 | 中冶南方工程技术有限公司 | Triple supplying system utilizing blast furnace bottom-filtration-process slag-flushing-water waste heat |
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2014
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Patent Citations (4)
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| JPS569253A (en) * | 1979-07-03 | 1981-01-30 | Kobe Steel Ltd | Water granulated slag producing device |
| CN2748467Y (en) * | 2004-11-05 | 2005-12-28 | 马鞍山钢铁股份有限公司 | Water-quenching slag-washing water treatment device for blast furnace slag |
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| CN203768381U (en) * | 2014-01-13 | 2014-08-13 | 中冶南方工程技术有限公司 | Triple supplying system utilizing blast furnace bottom-filtration-process slag-flushing-water waste heat |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104807337A (en) * | 2015-04-25 | 2015-07-29 | 成都中冶节能环保工程有限公司 | Current source-based bipolar oscillating type waste heat power generating system |
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| CN112619250A (en) * | 2021-01-07 | 2021-04-09 | 戚晓芳 | Metal smelting blast furnace slag bottom filtration method filtration system |
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| CN104032054B (en) | 2015-12-30 |
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