CN105803136A - Blast furnace slag washing water waste heat recovery process system - Google Patents
Blast furnace slag washing water waste heat recovery process system Download PDFInfo
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- CN105803136A CN105803136A CN201410847806.4A CN201410847806A CN105803136A CN 105803136 A CN105803136 A CN 105803136A CN 201410847806 A CN201410847806 A CN 201410847806A CN 105803136 A CN105803136 A CN 105803136A
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- water
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- exchange unit
- washing
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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
- Y02P10/20—Recycling
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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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Abstract
The invention relates to a blast furnace slag washing water waste heat recovery process system. The process system comprises a blast furnace, a slag washing water system with a water storage tank and a slag washing pump, and a heat exchange unit connected to the slag washing water system in series. The heat exchange unit comprises at least one heat exchange device. The heat exchange device is a full welded plate-type blocking-resistant heat exchanger. An inlet of the blocking-resistant heat exchanger is provided with a protection grid tray. The heat exchange unit is behind the slag washing pump and is connected to the slag washing water system in series. The rear part of a secondary water outlet pipe of the heat exchange unit is connected to a peak adjustment unit in series. The tail end of the peak adjustment unit is connected to a secondary water supply end. The process system realizes whole slag washing water heat full-load collection and maximal recovery of slag washing water waste heat, can be used for heating and heat supply or other purposes and realizes energy utilization circularization and maximization.
Description
Technical field
The present invention relates to a kind of blast furnace slag quenching water waste heat reclaiming process flow system, particularly one not set washing slag water cooling tower, set single water reservoir slag flushing pump using exhaust heat of slag flushing water recovery system.
Background technology
Blast furnace ironmaking produces substantial amounts of high-temperature slag, the washing slag water of a large amount of 60 DEG C-90 DEG C is obtained after shrend, some blast furnace does not configure the washing slag water system of washing slag water cooling tower and cooling tower pump, use water reservoir slag flushing pump washing slag water system, washing slag water especially contains substantial amounts of float containing solid particle, if directly heating can deposit at pipeline, radiator, block, and indirect heat exchange adopts usual heat exchanger can block equally, cannot life-time service, therefore, using exhaust heat of slag flushing water is not all recycled fully and effectively for many years.In technological process, current existing residual neat recovering system, be substantially free of and relate to the discontinuity of blast furnace slag flushing, Modern Large Blast Furnaces liquidates the control requirement of slag water temperature, also without consider full water yield heat-obtaining and with original blast furnace technology flow process handover operation problem.
Summary of the invention
It is contemplated that propose a kind of to realize full water yield heat-obtaining and with original blast furnace technology flow process handover operation, heat supply continuous, controlled, with the blast furnace slag quenching water waste heat reclaiming process flow system of the washing slag water system of a set of water reservoir slag flushing pump.
The technical scheme is that and be achieved in that:
A kind of blast furnace slag quenching water waste heat reclaiming process flow system, including blast furnace, with water reservoir, a set of washing slag water system of slag flushing pump and the heat exchange unit with washing slag water Cascade System；Heat exchange unit includes at least one heat exchanger, and heat exchanger is the heat exchanger of resistance to blocking type of full-welding plate-type, and the heat exchanger entrance of resistance to blocking type end is provided with protection screen,
Heat exchange unit after slag flushing pump with washing slag water Cascade System, peak regulation unit of connecting after heat exchange unit secondary water outlet conduit, peak regulation cell end connecting secondary water is for water end (W.E.).
Preferably, at least provided with one weir plate between water reservoir rear and front end；Arrange a set of fetched water by the water reservoir front end of washing slag water system, after heat exchange unit heat-obtaining, return to the slag-washing-out pump group of water reservoir rear end；Heat exchange unit is by slag-washing-out pump group and washing slag water Cascade System.
Preferably, being provided with the washing slag water valve group for switching and regulate flow between washing slag water system and heat exchange unit, washing slag water valve group includes being located at washing slag water system pipeline and being located at heat exchange unit washing slag water inlet channel and the washing slag water valve of heat exchange unit washing slag water outlet conduit.
Preferably, peak regulation unit includes at least one heat exchanger.
Compared with prior art, the blast furnace slag quenching water waste heat reclaiming process flow system that the present invention proposes is by selecting the heat exchanger of resistance to blocking type of the full-welding plate-type with protection screen, heat exchanger long service life, it is possible to absorb at utmost, least cost and reclaim using exhaust heat of slag flushing water；Heat exchange unit secondary water water return pipeline passes through secondary water automatic switchover valve connecting secondary water outlet pipe, controls automatic transfer valve by contrasting washing slag water outlet temperature and secondary water inlet temperature, it is prevented that anti-heat exchange occurs；Peak regulation unit, according to by thermic load change, washing slag water variations in temperature, regulates secondary water supply water temperature, it is achieved the hot water supply of continuous-stable.Present invention achieves washing slag water full water yield heat-obtaining at full capacity, reclaim using exhaust heat of slag flushing water to greatest extent, can be used for heating or other purposes, it is achieved that the circulation of utilization of energy and maximization.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of an embodiment of the present invention；
Fig. 2 is the schematic flow sheet of the another two kinds of embodiments of the present invention.
In figure: 1, flushing cinder water valve；2, heat exchange unit washing slag water inlet channel；3, heat exchange unit washing slag water outlet conduit；4, the heat exchanger of resistance to blocking type；5, heat exchange unit；6, heat exchange unit secondary water inlet channel；7, heat exchange unit secondary water outlet conduit；8, secondary water graded filter；9, secondary water feed pump；10, secondary water feed pump group；11, heat exchanger；12, peak regulation unit；13, small pump.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
As shown in Figure 1: a kind of blast furnace slag quenching water waste heat reclaiming process flow system, including blast furnace, with water reservoir, slag flushing pump a set of washing slag water system and with the heat exchange unit 5 of washing slag water Cascade System；Heat exchange unit 5 includes at least one heat exchanger, and heat exchanger is the heat exchanger of resistance to blocking type 4 of full-welding plate-type, and the heat exchanger of resistance to blocking type 4 arrival end is provided with protection screen,
Heat exchange unit 5 after slag flushing pump with washing slag water Cascade System, peak regulation unit 12 of connecting after heat exchange unit secondary water outlet conduit 7, peak regulation unit 12 end connecting secondary water is for water end (W.E.).
Work process: blast furnace slag quenching water through filter laggard enter after water reservoir, slag-washing-out pump, all or part of washing slag water enters heat exchange unit 5, flows back to washing slag water pipeline and carry out flushing cinder after heat exchange；Secondary water by the water compensation mechanism (water compensation mechanism is made up of the small pump 13 of tank and connection thereof) of secondary water backwater end and bypass thereof through secondary water graded filter 8 filter after, enter in heat exchange unit 5 and carry out heat exchange, heat exchange enters peak regulation unit 12 (the secondary water inlet pipeline communication of the outlet of secondary water feed pump 9 and peak regulation unit 12 again through secondary water feed pump group 10 (being provided with multiple secondary water feed pump 9 in it) after completing, the pipeline communication of the secondary water exit conduit of peak regulation unit 12 and heating pipeline or other purposes) heat exchange, and confessed for water end (W.E.) by secondary water.
There is following beneficial effect in the present invention:
1, by selecting the heat exchanger of resistance to blocking type of the full-welding plate-type with protection screen, heat exchanger long service life, it is possible to absorb at utmost, least cost and reclaim using exhaust heat of slag flushing water；
2, heat exchange unit secondary water water return pipeline passes through secondary water automatic switchover valve connecting secondary water outlet pipe, controls automatic transfer valve by contrasting washing slag water outlet temperature and secondary water inlet temperature, it is prevented that anti-heat exchange occurs；
3, peak regulation unit is according to by thermic load change, washing slag water variations in temperature, regulates secondary water supply water temperature, it is achieved the hot water supply of continuous-stable.
Present invention achieves washing slag water full water yield heat-obtaining at full capacity, reclaim using exhaust heat of slag flushing water to greatest extent, can be used for heating or other purposes, it is achieved that the circulation of utilization of energy and maximization.
Another embodiment of the present invention, as shown in Figure 2: blast furnace slag quenching water waste heat recovery heating system, heat exchange unit 5 after slag flushing pump with washing slag water Cascade System, washing slag water is extracted from water reservoir by 3 pulp water pumps (1 open 2 standby), through slag pipe A, slag pipe B two-way (1 is standby with 1) entrance heat exchange unit 5.Slag flushing pump is utilized to provide lift for heat exchange unit 5.The advantage of the implementation case is in that, heat-obtaining system need not set slag-washing-out pump, and equipment investment is little, and manipulation is simple.
As the preferred technical scheme of one, one more embodiment of the present invention, at least provided with one weir plate between water reservoir rear and front end；Arrange a set of fetched water by the water reservoir front end of washing slag water system, after heat exchange unit 5 heat-obtaining, return to the slag-washing-out pump group of water reservoir rear end；Heat exchange unit 5 is by slag-washing-out pump group and washing slag water Cascade System.
As the preferred technical scheme of one, another embodiment of the present invention, being provided with the washing slag water valve group for switching and regulate flow between washing slag water system and heat exchange unit 5, washing slag water valve group includes being located at washing slag water system pipeline and being located at heat exchange unit washing slag water inlet channel 2 and the washing slag water valve of heat exchange unit washing slag water outlet conduit 3.
All or part of for washing slag water incision heating picking process flow process can be carried out heat-obtaining by valve group, switchback can recover the original technological process of blast furnace, heat exchange unit secondary water inlet channel 6 is by secondary water graded filter 8 connecting secondary water backwater end, ensure the water quality of secondary water, make equipment reach good working order.
As the preferred technical scheme of one, another embodiment of the present invention, peak regulation unit 12 includes at least one heat exchanger 11.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (4)
1. a blast furnace slag quenching water waste heat reclaiming process flow system, it is characterised in that: include blast furnace, with water reservoir, slag flushing pump a set of washing slag water system and with the heat exchange unit (5) of described washing slag water Cascade System；Described heat exchange unit (5) includes at least one heat exchanger, and described heat exchanger is the heat exchanger of resistance to blocking type (4) of full-welding plate-type, and the described heat exchanger of resistance to blocking type (4) arrival end is provided with protection screen,
Described heat exchange unit (5) after described slag flushing pump with described washing slag water Cascade System, described heat exchange unit secondary water outlet conduit (7) is connected peak regulation unit (12) afterwards, and described peak regulation unit (12) end connecting secondary water is for water end (W.E.).
2. blast furnace slag quenching water waste heat reclaiming process flow system according to claim 1, it is characterised in that: at least provided with one weir plate between described water reservoir rear and front end；Arrange a set of fetched water by the water reservoir front end of washing slag water system, after described heat exchange unit (5) heat-obtaining, return to the slag-washing-out pump group of water reservoir rear end；Described heat exchange unit (5) is by described slag-washing-out pump group and washing slag water Cascade System.
3. blast furnace slag quenching water waste heat reclaiming process flow system according to claim 1, it is characterized in that: be provided with the washing slag water valve group for switching and regulate flow between described washing slag water system and described heat exchange unit (5), described washing slag water valve group includes being located at described washing slag water system pipeline and being located at heat exchange unit washing slag water inlet channel (2) and the washing slag water valve of heat exchange unit washing slag water outlet conduit (3).
4. blast furnace slag quenching water waste heat reclaiming process flow system according to claim 1, it is characterised in that: described peak regulation unit (12) includes at least one heat exchanger (11).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410847806.4A CN105803136A (en) | 2014-12-31 | 2014-12-31 | Blast furnace slag washing water waste heat recovery process system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410847806.4A CN105803136A (en) | 2014-12-31 | 2014-12-31 | Blast furnace slag washing water waste heat recovery process system |
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| CN105803136A true CN105803136A (en) | 2016-07-27 |
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| CN201410847806.4A Pending CN105803136A (en) | 2014-12-31 | 2014-12-31 | Blast furnace slag washing water waste heat recovery process system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375557A (en) * | 2019-07-09 | 2019-10-25 | 鞍钢股份有限公司 | System and method for recovering waste heat of blast furnace slag flushing water |
| CN113686191A (en) * | 2021-07-27 | 2021-11-23 | 首钢京唐钢铁联合有限责任公司 | Automatic control method for heat exchange of blast furnace slag flushing water of iron and steel plant |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103146856A (en) * | 2013-03-28 | 2013-06-12 | 天津华赛尔传热设备有限公司 | Blast furnace cinder flushing water heat recovery technological process system |
| CN103146855A (en) * | 2013-03-28 | 2013-06-12 | 天津华赛尔传热设备有限公司 | Blast furnace cinder flushing water heat recovery technological process system |
| CN204455149U (en) * | 2014-12-31 | 2015-07-08 | 天津华赛尔传热设备有限公司 | A kind of waste heat recovery system of blast furnace slag quenching water |
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- 2014-12-31 CN CN201410847806.4A patent/CN105803136A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103146856A (en) * | 2013-03-28 | 2013-06-12 | 天津华赛尔传热设备有限公司 | Blast furnace cinder flushing water heat recovery technological process system |
| CN103146855A (en) * | 2013-03-28 | 2013-06-12 | 天津华赛尔传热设备有限公司 | Blast furnace cinder flushing water heat recovery technological process system |
| CN204455149U (en) * | 2014-12-31 | 2015-07-08 | 天津华赛尔传热设备有限公司 | A kind of waste heat recovery system of blast furnace slag quenching water |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375557A (en) * | 2019-07-09 | 2019-10-25 | 鞍钢股份有限公司 | System and method for recovering waste heat of blast furnace slag flushing water |
| CN113686191A (en) * | 2021-07-27 | 2021-11-23 | 首钢京唐钢铁联合有限责任公司 | Automatic control method for heat exchange of blast furnace slag flushing water of iron and steel plant |
| CN113686191B (en) * | 2021-07-27 | 2024-06-07 | 首钢京唐钢铁联合有限责任公司 | Automatic control method for heat exchange of blast furnace slag flushing water in steel plant |
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