CN102538496B - Zero-emission comprehensive utilizing technology for continuous-casting secondary-cooling vapor and converter vaporizing vapor - Google Patents

Zero-emission comprehensive utilizing technology for continuous-casting secondary-cooling vapor and converter vaporizing vapor Download PDF

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Publication number
CN102538496B
CN102538496B CN2012100506866A CN201210050686A CN102538496B CN 102538496 B CN102538496 B CN 102538496B CN 2012100506866 A CN2012100506866 A CN 2012100506866A CN 201210050686 A CN201210050686 A CN 201210050686A CN 102538496 B CN102538496 B CN 102538496B
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vapor
converter
cooling
pipeline
water
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CN102538496A (en
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李勇
鞠秋奎
朱启柱
魏志强
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Fushun New Steel Co Ltd
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Fushun New Steel Co Ltd
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    • 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

Abstract

The invention discloses a zero-emission comprehensive utilizing technology for continuous-casting secondary-cooling vapor and converter vaporizing vapor. The zero-emission comprehensive utilizing technology for the continuous-casting secondary-cooling vapor and the converter vaporizing vapor comprises the following steps; 1, heating period: cooling the continuous-casting secondary-cooling vapor and the vaporized converter vapor, dewatering the continuous-casting secondary-cooling vapor and the vaporized converter vapor into hot water at 85-95 DEG C, collecting the hot water into a heat-preserving water tank for supplying a circulating heating medium to a heat supply network, and supplementing surplus water in the circulating heating medium into a fresh water system; and 2, non-heating period: cooling the continuous-casting secondary-cooling vapor and the vaporized converter vapor into liquid water, collecting the liquid water into a water storage pool, and supplementing the liquid water into the fresh water system. After adoption of the technology, the continuous-casting secondary-cooling vapor and the vaporized converter vapor are completely recycled, so that the zero emission is realized; the influence of the emission of the continuous-casting secondary-cooling vapor and the vaporized converter vapor on the environment is avoided, and the energy brought by the emission is comprehensively utilized, so that aims of saving energy, reducing emission and lowering consumption are fulfilled; the economic, environmental and social benefits are outstanding; and the zero-emission comprehensive utilizing technology for the continuous-casting secondary-cooling vapor and the converter vaporizing vapor is worth of wide popularization.

Description

A kind of continuous casting two cold water vapour and converter boil-off zero diffused comprehensive utilization process
One, technical field
The invention belongs to steelmaking technical field, be specifically related to a kind of continuous casting two cold water vapour and converter boil-off zero and diffuse comprehensive utilization process.
Two, background technology
The converter evaporated flue is one of main corollary equipment of pneumatic steelmaking.This equipment will be collected high-temperature flue gas to greatest extent when work, flue-gas temperature can reach 1500 ℃, and flue gas cooling back is produced boil-off, and boil-off is the important secondary energy sources of converter mill.Because converter production has discontinuity, the smelting cycle of every stove is 30 minutes, and pure oxygen blow duration is 15 minutes, and the generation of steam also has interruption, the big characteristic of moment steam production, the phenomenon that often has boil-off to diffuse in the actual moving process.In iron and steel enterprise's continuous casting manufacturing technique, nearly 1000 ℃ strand band the liquid core and is entered the cooling of two cold-zones acceptance water spray, purpose is that strand is solidified fully, strand will all solidify the heat of the 210~294kJ/kg that need shed in two cold-zones, wherein 58% heat is taken away by secondary cooling water, the secondary cooling water temperature raises, and produces steam simultaneously, and wherein secondary cooling water steam directly enters in the atmosphere.Directly diffusing of above-mentioned continuous casting two cold water vapour and converter boil-off not only influences environment, and its heat energy that carries do not obtain utilizing, and do not meet energy-saving and emission-reduction and environmental protection requirement.
Three, summary of the invention
The purpose of this invention is to provide a kind of continuous casting two cold water vapour and converter boil-off zero and diffuse comprehensive utilization process, adopt this technology can make continuous casting two cold water vapour and converter boil-off realize that zero diffuses, avoid environment is impacted, the entrained heat of steam is fully used, to reach the purpose of energy-saving and emission-reduction, consumption reduction.
For achieving the above object, the technical solution used in the present invention is: this technology comprises the steps: 1. heating period: continuous casting two cold water vapour and converter boil-off are become 85-95 ℃ hot water through cooling, dehydration, collect in the attemperater, for heat supply network provides the circulation heating agent, unnecessary water is mended into new water system in the circulation heating agent;
2. non-heating period: continuous casting two cold water vapour and converter boil-off through cooling, behind the liquefy water, are collected in the tank, mended new water system again.
Adopt above-mentioned technology, continuous casting two cold water vapour and converter boil-off 100% have obtained recycling, have realized that zero diffuses.Not only solved it and diffused the influence that environment is caused, and its with energy obtained comprehensive utilization, thereby realized the purpose of steel mill energy-saving and emission-reduction and consumption reduction, economic benefit, environmental benefit, obvious social benefit are worth applying widely.
Four, description of drawings
Accompanying drawing is process chart of the present invention.
Five, the specific embodiment
As shown in the figure, 1. heating period: the steam in the caster two cold vaporium 1 through pipeline by blower fan 3 in valve 14 is transported to attemperater 13.The steam of be used for storing in the gas bag 2 of converter boil-off diffuses valve 18 and valve 17 also is transported in the attemperater 13 through pipeline, superpressure.Be transported to steam in the attemperater 13 in it cold plate 4 and cooling, the dehydration of dehydration net 6 become 85-95 ℃ hot water.Hot water is transported to heat supply network 8 through pipeline by heating heat-exchanger pump 19 again, for heat supply network 8 provides heating agent.The backwater major part of heat supply network 8 recycles in pipeline returns attemperater 13, and remaining part filters and mends into new water system by pipeline in pipeline is sent into new water filtration pond 9.2. non-heating period: the steam in the caster two cold vaporium 1 through pipeline by blower fan 3 in valve 15 is transported to cooler 12.The steam of be used for storing in the gas bag 2 of converter boil-off diffuses valve 18 and valve 16 also is transported in the cooler 12 through pipeline, superpressure.Be transported to steam in the cooler 12 are carried underground water 11 coolings of being come in through water pump 7 after, liquefy water, collecting volume through pipeline again is 20 m 3Tank 10 in, sent into by water pump 7 in the new water filtration pond 9 through pipeline again, filter and to mend into new water system by pipeline.The conveying of the steam in the caster two cold vaporium 1 of above-mentioned heating period and non-heating period and the gas bag 2 is controlled by valve, and namely during heating period, valve-off 15,16, Open valve 14,17 can only be transported in the attemperater 13 steam; During non-heating period, valve-off 14,17, Open valve 15,16 can only be transported in the cooler 12 steam.Above-mentioned attemperater 13 is that volume is 160m 3Big volume structure, its tank wall 5 is three layers of insulation construction.Above-mentioned heating heat-exchanger pump 19 is the heating heat-exchanger pump of QJR series, and its lift is 60 meters, flow 200 m 3

Claims (2)

1. a continuous casting two cold water vapour and converter boil-off zero diffused comprehensive utilization process, and it is characterized in that: this processing step is: 1. heating period: the steam in the caster two cold vaporium (1) through pipeline by blower fan (3) in valve (14) is transported to attemperater (13); The steam of be used for storing in the gas bag (2) of converter boil-off diffuses valve (18) and valve (17) also is transported in the attemperater (13) through pipeline, superpressure; Be transported to steam in the attemperater (13) in it cold plate (4) and cooling, the dehydration of dehydration net (6) become 85-95 ℃ hot water; Hot water is transported to heat supply network (8) through pipeline by heating heat-exchanger pump (19) again, the backwater major part of heat supply network (8) recycles in pipeline returns attemperater (13), remaining part filters and mends into new water system by pipeline in pipeline is sent into new water filtration pond (9); 2. non-heating period: the steam in the caster two cold vaporium (1) through pipeline by blower fan (3) in valve (15) is transported to cooler (12); The steam of be used for storing in the gas bag (2) of converter boil-off diffuses valve (18) and valve (16) also is transported in the cooler (12) through pipeline, superpressure; Be transported to the interior steam of cooler (12) through cooling liquefy water, in pipeline is collected tank (10), sent in the new water filtration pond (9) by water pump (7) through pipeline more again, filter and mend into new water system by pipeline.
2. a kind of continuous casting two cold water vapour according to claim 1 and converter boil-off zero diffused comprehensive utilization process, and it is characterized in that: attemperater (13) is that volume is 160m 3Big volume structure, its tank wall (5) is three layers of insulation construction.
CN2012100506866A 2012-03-01 2012-03-01 Zero-emission comprehensive utilizing technology for continuous-casting secondary-cooling vapor and converter vaporizing vapor Active CN102538496B (en)

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Publication number Priority date Publication date Assignee Title
CN102773441B (en) * 2012-08-28 2015-10-07 无锡市东方环境工程设计研究所有限公司 The waste heat recovery device of continuous casting two cold section
CN108176829B (en) * 2018-01-19 2019-08-23 天津荣程联合钢铁集团有限公司 A kind of conticaster method for treating water and plate obtained by this method
CN109175284A (en) * 2018-09-10 2019-01-11 武汉科技大学 A kind of efficient, energy-efficient continuous casting secondary cooling method

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