CN101153347A - System and technology for using exhaust heat of dross from ironmaking and steel-smelting by water quenching steam method - Google Patents
System and technology for using exhaust heat of dross from ironmaking and steel-smelting by water quenching steam method Download PDFInfo
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- CN101153347A CN101153347A CNA200710014446XA CN200710014446A CN101153347A CN 101153347 A CN101153347 A CN 101153347A CN A200710014446X A CNA200710014446X A CN A200710014446XA CN 200710014446 A CN200710014446 A CN 200710014446A CN 101153347 A CN101153347 A CN 101153347A
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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
A water hardening steam system and the technique thereof utilizing the waste temperature of sinter from steel making and iron making is provided, which establishes a sealed sinter pot near the steel-making or iron making furnace, so that the sinter produced by steel making and iron making can flow into the sinter pot; wherein, a sealed hardening container arranged below the sinter pot, so that the sinter can flow into the hardening container from the sinter pot; the sealed hardening container can be provided inside with a squirt gun capable of shattering the sinter, the lower part of the hardening contain is provided with an outlet of cooled sinter, and the upper part is provided with a steam pipe, which is connected with the primary circuit of a heat exchanger, the second circuit of which delivers the heated clean steam into a steam turbine to do work, or a dust catcher can be used to substitute for the heat exchanger, and the steam produced during the water hardening process undergoes dust elimination and heating to be delivered into the stream turbine for to do work.
Description
Affiliated technical field
System and the technology the present invention relates to a kind ofly to realize making steel, iron-making melting slag waste heat utilizing method especially realize the system and the technology of shrend steaming process utilization steel-making, iron-making melting slag waste heat.
Background technology
At present, known steel-making, ironmaking slag quantity and heat content are all very huge, but do not find the good method of utilizing melting slag waste heat for a long time.Application number is the patent of invention of 200610045538.X, a kind of slag shrend continuously in encloses container that makes is proposed, allow shrend produce steam and flow out continuously by pipeline, generate electricity with outflow steam driven steam turbine and utilize the method for melting slag waste heat, this method is called the shrend steaming process.The method that this patent proposes only is preliminary imagination, also exists a lot of not enough.
Summary of the invention
In order to overcome the deficiency that application number exists for the 200610045538.X patent of invention, the present invention proposes a kind of system and technology that realizes shrend steaming process utilization steel-making, the iron-making melting slag waste heat of proposing.
The technical solution adopted for the present invention to solve the technical problems is: set up airtight slag storage tank near steel-making, iron-smelting furnace, the slag storage tank is divided into airtight shrend container, under the airtight shrend container slag-drip opening is arranged, airtight shrend container top is connected to steam-pipe, steam-pipe inserts the interchanger primary loop, and the interchanger secondary circuits inserts steam turbine; Or make steam-pipe make steam-pipe directly enter steam turbine again through behind the fly-ash separator.For the shrend process is carried out continuously, need set up two airtight slag storage tanks, one when flowing into slag inwards, another outwards flows out slag; The slag storage tank is made with sheet metal, and inner lining refractory is provided with openable door above and flows into for slag, is provided with slag exit below, and outlet is provided with hot-resistant valve, and other has compressed air line to feed slag storage tank upper space; After the door on slag storage tank top is closed, compressed air line is to slag pressurization in the slag storage tank, when reaching certain pressure, hot-resistant valve on the slag exit is opened, slag sprays into airtight shrend container with certain pressure in jar, is smashed the generation shrend by High-Pressure Water in the shrend container, or falls into that shrend takes place ponding in the shrend container, shrend produces steam portion's pipeline outflow from container, and cold slag is discharged from container bottom slag-drip opening after the shrend; Flow out steam from steam-pipe and contain certain dust, need make it, heat is given the pure water of interchanger secondary circuits through the interchanger primary loop; The water of condensation of primary steam water from the interchanger outflow can be used as reclaims, and also can make it be used for shrend once more; The pure water of interchanger secondary circuits absorbs heat and send into the steam turbine acting again after heating; Also can make and flow out steam from steam-pipe and be introduced into fly-ash separator, directly enter the steam turbine acting after removing dust.
Also need measure slag actual flow, the control slag storage tank slag flow of slag liquid level actual height and slag storage tank in the slag storage tank, the shrend flow of control shrend hydraulic giant.In described slag storage tank, establish the little space that the recirculated water cooling wall surrounds on the slag liquid level, laser or ultrasonic emitting source are placed in the little space that described recirculated water cooling wall surrounds, described laser or ultrasonic emitting source are positive approximately to become 90 ° with the slag liquid level, launch laser or ultrasonic wave can be from described water wall opening ejaculation; Outside described laser or front, ultrasonic emitting source water wall, settle the refractory metal sheet, tinsel and slag liquid level are approximately at 45, the ray that send in described laser or ultrasonic emitting source reflects to the slag liquid level after running into tinsel, reflect to the tinsel place again after running into the slag liquid level, reflect arrival laser or ultrasonic receiver, slag actual flow in slag liquid level actual height and the described slag storage tank in conversion obtains described slag storage tank once more through tinsel.
With slag flow in the described slag storage tank of slag storage tank compressed air pressure-controlling, in increasing described slag storage tank, increase described compressed air pressure during the slag flow, in reducing described slag storage tank, reduce described compressed air pressure during the slag flow.
Can when described shrend container overflow water flow is excessive, reduce described shrend monitor flow according to the described shrend monitor flow of described shrend container overflow water flow control, when described shrend container overflow water flow is too small, increase described shrend monitor flow.
The invention has the beneficial effects as follows: can make slag shrend continuously under elevated pressures, it is higher that shrend obtains saturated-steam temperature; The shrend process is convenient to control; Be existing mature technology after the interchanger, only need partly to add research before the heat exchanging device.
Description of drawings
The present invention is further described below in conjunction with accompanying drawing.
Fig. 1 of the present inventionly has interchanger, steam-pipe to be arranged on the slag runner to absorb the system diagram that the slag width of cloth is penetrated heat;
Fig. 2 is a system diagram that interchanger is arranged, use some coal gas steam pipeline (trace) of the present invention;
Fig. 3 of the present inventionly replaces interchanger, steam-pipe to be arranged on the slag runner with electric precipitator absorbing the system diagram that the slag width of cloth is penetrated heat;
Fig. 4 is a system diagram that replaces interchanger, usefulness point coal gas steam pipeline (trace) with electric precipitator of the present invention;
Fig. 5 of the present inventionly has interchanger, steam-pipe to be arranged on the slag runner to absorb the slag width of cloth to penetrate heat, two slag storage tank slag notches insert the shrend container by threeway system diagram;
Fig. 6 is the system diagram that interchanger is arranged, insert the shrend container with some coal gas steam pipeline (trace), two slag storage tank slag notches by threeway of the present invention;
Fig. 7 of the present inventionly replaces interchanger, steam-pipe to be arranged on the slag runner absorbing the slag width of cloth to penetrate heat, two slag storage tank slag notches insert the shrend container by threeway system diagram with electric precipitator;
Fig. 8 of the present inventionly replaces interchanger, inserts the system diagram of shrend container with a some coal gas steam pipeline (trace), two slag storage tank slag notches by threeway with electric precipitator;
Fig. 9 of the present inventionly has interchanger, steam-pipe to be arranged on the slag runner to absorb the system diagram that the slag width of cloth is penetrated heat and inserted the shrend container with a some coal gas steam pipeline (trace), two slag storage tank slag notches by threeway;
Figure 10 of the present inventionly replaces interchanger, steam-pipe to be arranged on the slag runner with electric precipitator absorbing the system diagram that the slag width of cloth is penetrated heat and inserted the shrend container with a some coal gas steam pipeline (trace), two slag storage tank slag notches by threeway.
In Fig. 1,1. left slag chute outlet, 2. right slag chute outlet, 3. slag chute, 4. left slag ladle slag inlet, 5. right slag ladle slag inlet, 6. slag liquid level in the slag ladle, 7. left slag storage tank, 8. left slag ladle slag exit valve, 9. ponding liquid level in the shrend container, 10. left shrend hydraulic giant, 11. right slag storage tanks, 12. right slag ladle slag exit valves, 13. right shrend hydraulic giant, 14. the shrend steam-pipe, 15. shrend containers, 16. shrend containers are isolated the cavity inlet down, 17. the shrend container is isolated cavity down, 18. isolate the cavity outlet, 19. spiral slag off apparatuss, 20. clean steam flow out heat exchanger tube, 21. clean steam heat absorbing conduit on the slag chute, 22. the shrend steam condensate flows out pipeline, 23. interchanger, 24. clean water pumps, 25. clean water enters heat exchanger tube, 26. condenser, 27. steam turbines, 28. generators, 29. water coolant flows into condenser tubes, 30. cooling water flow out of condenser tubes.
In Fig. 2,1 ~ 20,22 ~ 30 with Fig. 1 in identical, 21. clean steam-pipes, 31. gas-fired furnaces, 32. coal gas are lighted torch, 33. gas burners, 34. gas lines.
In Fig. 3,1 ~ 20,26 ~ 30 with Fig. 1 in identical, 23. electric precipitator.
In Fig. 4,1 ~ 20,26 ~ 34 with Fig. 2 in identical, 23. electric precipitator.
In Fig. 5,1 ~ 30 with Fig. 1 in identical, 31. slag storage tank threeways outlets.
In Fig. 6,1 ~ 34 with Fig. 2 in identical, 35. slag storage tank threeways outlets.
In Fig. 7,1 ~ 30 with Fig. 3 in identical, 31. slag storage tank threeways outlets.
In Fig. 8,1 ~ 34 with Fig. 4 in identical, 35. slag storage tank threeways outlets.
In Fig. 9,1 ~ 35 with Fig. 6 in identical, 36. clean steam heat absorbing conduit on the slag chute.
In Figure 10,1 ~ 35 with Fig. 8 in identical, 36. clean steam heat absorbing conduit on the slag chute.
Embodiment
At Fig. 1, set up the continuous shrend of the slag system that forms by isolation cavity (17), spiral slag off apparatus (19) etc. under two slag storage tanks (7) and (11), shrend container (15), the shrend container in steel-making, near the iron-smelting furnace, steam-pipe (14) is inserted on shrend container (15) top, be respectively equipped with slag inlet seal door (4) and (5) on two slag storage tanks (7) and (11) top, slag chute outlet (1) and (2) faces slag inlet seal door (4) and (5) on the slag tank roof respectively; When slag flows through from slag chute (3), the slag inlet seal door on the slag tank roof is opened, slag is flowed into; After this slag storage tank is filled slag, the slag inlet seal door on this slag tank roof is closed airtight, the slag inlet seal door on another slag tank roof is opened, slag is flowed into; Slag is pressurized to 10kg/cm in the airtight slag storage tank to filling
2More than, this slag tank bottom slag exit valve is opened, make slag with 10kg/cm
2Above pressure current is gone into shrend container (15), and simultaneously interior the hydraulic giant of shrend container (15) (10) or (13) inject high pressure current smash the slag stream of inflow, and slag is aloft by shrend or fall into the interior ponding of shrend container (15) (9) by shrend; Because of shrend container (15) internal pressure also is 10kg/cm
2More than, shrend produces saturated-steam temperature near 180 ℃, and shrend produces saturation steam and flows out from steam-pipe (14), closely goes into interchanger (23); Interchanger secondary clean water pressure-controlling is at 8kg/cm
2, its temperature of saturation is more than 170 ℃; The shrend saturation steam is emitted heat in interchanger (23), flows out from pipeline (22) after the condensation; Clean water absorbs heat and becomes steam in interchanger (23), flow out from pipeline (20); Clean water steam passes through in the steam-pipe (21) that is arranged in slag chute top, and absorption slag chute is emitted heat becomes superheated vapour, enters steam turbine (27) acting.
In Fig. 2, enter gas-fired furnace (31) from the effusive clean steam of interchanger (23) by pipeline (21), after being heated, clean steam enters steam turbine (27) acting in gas-fired furnace (31).
In Fig. 3, enter electric precipitator (23) from the effusive steam of shrend container (15) by pipeline (14), the steam of removing dust passes through in the steam-pipe (21) that is arranged in slag chute top, and absorption slag chute is emitted heat becomes superheated vapour, enters steam turbine (27) acting.
In Fig. 4, enter electric precipitator (23) from the effusive steam of shrend container (15) by pipeline (14), the steam of removing dust enters gas-fired furnace (31) by pipeline (21), and the steam after being heated in gas-fired furnace (31) enters steam turbine (27) acting.
In Fig. 5 ~ 8, the slag of emitting from two slag storage tanks (7) and (11) all is to enter shrend container (15) by threeway, a slag exit (31) is only arranged, an available hydraulic giant shrend in shrend container (15).
In Fig. 9,10, from interchanger or the effusive clean steam of electric precipitator all is earlier by being arranged in the steam-pipe on slag chute top, absorb the slag chute and emit heat, enter gas-fired furnace again, enter the steam turbine acting after in gas-fired furnace, being heated.
Claims (6)
1. a system and technology that realizes shrend steaming process utilization steel-making, iron-making melting slag waste heat is characterized in that: set up airtight slag storage tank near steel-making, iron-smelting furnace, steel-making, the ironmaking slag that produces can flow into described slag storage tank; Described slag storage tank is divided into airtight shrend container, and slag can flow into described shrend container from described slag storage tank; Described airtight shrend internal tank is provided with the hydraulic giant that can smash slag stream, and the bottom is provided with cold slag discharge outlet, and top is connected to steam-pipe; Described steam-pipe inserts the interchanger primary loop, and the clean steam of interchanger secondary circuits enters steam turbine after heating; Or replacing described interchanger with fly-ash separator, shrend produces steam and enters steam turbine through described fly-ash separator dedusting after heating.
2. the system and the technology of realization shrend steaming process utilization steel-making according to claim 1, iron-making melting slag waste heat, it is characterized in that: described system is provided with two airtight slag storage tanks, described slag storage tank outer wall is made by sheet metal, inner lining refractory, be provided with above and can open the high temperature high voltage resistant door for the slag inflow, be provided with slag exit below and insert described shrend container, described outlet is provided with high-heat and high-pressure valve, and other has compressed air line to feed slag storage tank upper space; After the described door in described slag storage tank top was closed sealing, compressed air line was to slag pressurization in the described slag storage tank; When reaching convenient pressure, the valve on the described storage tank slag exit is opened, slag sprays into described airtight shrend container with certain pressure in jar, the current that sprayed by water blast gun in described shrend container smash the generation shrend, or fall into that shrend takes place ponding in the described shrend container; Shrend produces steam and flows out from described shrend container upper pipe, and cold slag is discharged from described shrend container bottom slag-drip opening after the shrend; Two described slag storage tanks take turns to operate, and one when flowing into slag inwards, another outwards flows out slag, and the shrend process is carried out continuously.
3. the system and the technology of realization shrend steaming process utilization steel-making according to claim 1, iron-making melting slag waste heat, it is characterized in that: produce the steam-pipe outflow steam from described shrend and contain certain dust, need make it through the interchanger primary loop, heat be given the clean water of described interchanger secondary circuits; From described interchanger flow out water of condensation that shrend produces steam can be used as the water recovery, also can make it be used for shrend once more; The clean water of described interchanger secondary circuits becomes steam absorb heat in described interchanger after, heats to make after the described clean water steam heating it enter the steam turbine acting; Also available electric precipitator replaces described interchanger, and the described fly-ash separator of heating process is removed the steam behind the dust, makes it enter the steam turbine acting.
4. the system and the technology of realization shrend steaming process utilization steel-making according to claim 1, iron-making melting slag waste heat, it is characterized in that: in described slag storage tank, establish the little space that the recirculated water cooling wall surrounds on the slag liquid level, laser or ultrasonic emitting source are placed in the little space that described recirculated water cooling wall surrounds, described laser or ultrasonic emitting source are positive approximately to become 90 ° with the slag liquid level, launch laser or ultrasonic wave can be from described water wall opening ejaculation; Outside described laser or front, ultrasonic emitting source water wall, settle the refractory metal sheet, tinsel and slag liquid level are approximately at 45, the ray that send in described laser or ultrasonic emitting source reflects to the slag liquid level after running into tinsel, reflect to the tinsel place again after running into the slag liquid level, reflect arrival laser or ultrasonic receiver, slag actual flow in slag liquid level actual height and the described slag storage tank in conversion obtains described slag storage tank once more through tinsel.
5. the system and the technology of realization shrend steaming process utilization steel-making according to claim 1, iron-making melting slag waste heat, it is characterized in that: with slag flow in the described slag storage tank of slag storage tank compressed air pressure-controlling, in increasing described slag storage tank, increase described compressed air pressure during the slag flow, in reducing described slag storage tank, reduce described compressed air pressure during the slag flow.
6. the system and the technology of realization shrend steaming process utilization steel-making according to claim 1, iron-making melting slag waste heat, it is characterized in that: according to the described shrend monitor flow of described shrend container overflow water flow control, when described shrend container overflow water flow is excessive, reduce described shrend monitor flow, when described shrend container overflow water flow is too small, increase described shrend monitor flow.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710014446XA CN101153347A (en) | 2007-05-22 | 2007-05-22 | System and technology for using exhaust heat of dross from ironmaking and steel-smelting by water quenching steam method |
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| CNA200710014446XA CN101153347A (en) | 2007-05-22 | 2007-05-22 | System and technology for using exhaust heat of dross from ironmaking and steel-smelting by water quenching steam method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101597656B (en) * | 2009-07-28 | 2010-09-22 | 首钢总公司 | High temperature furnace slag sensible heat power generating method |
| CN102304594A (en) * | 2011-09-29 | 2012-01-04 | 魏明 | Slag-pot-movable water quenching system utilizing excess heat of molten slag based on water quenching steam method |
| WO2013044595A1 (en) * | 2011-09-29 | 2013-04-04 | 魏明 | Movable slag tank water quenching system utilizing waste heat of molten slag by using water quenching steam method |
| CN101749688B (en) * | 2008-12-08 | 2013-05-08 | 北京中冶设备研究设计总院有限公司 | Steam recycle device for utilization and treatment of heat energy of blast furnace slag |
| CN108285945A (en) * | 2018-02-23 | 2018-07-17 | 叶吉利 | A kind of steel pollution emission reduction device |
| CN108285944A (en) * | 2018-02-23 | 2018-07-17 | 叶吉利 | A kind of Novel steel iron pollution emission reduction device |
| CN110813475A (en) * | 2019-11-12 | 2020-02-21 | 甘肃昊宇环保科技有限公司 | Rural village and town sewage treatment device and use method thereof |
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2007
- 2007-05-22 CN CNA200710014446XA patent/CN101153347A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749688B (en) * | 2008-12-08 | 2013-05-08 | 北京中冶设备研究设计总院有限公司 | Steam recycle device for utilization and treatment of heat energy of blast furnace slag |
| CN101597656B (en) * | 2009-07-28 | 2010-09-22 | 首钢总公司 | High temperature furnace slag sensible heat power generating method |
| CN102304594A (en) * | 2011-09-29 | 2012-01-04 | 魏明 | Slag-pot-movable water quenching system utilizing excess heat of molten slag based on water quenching steam method |
| WO2013044595A1 (en) * | 2011-09-29 | 2013-04-04 | 魏明 | Movable slag tank water quenching system utilizing waste heat of molten slag by using water quenching steam method |
| CN102304594B (en) * | 2011-09-29 | 2014-12-03 | 魏明 | Slag-pot-movable water quenching system utilizing excess heat of molten slag based on water quenching steam method |
| CN108285945A (en) * | 2018-02-23 | 2018-07-17 | 叶吉利 | A kind of steel pollution emission reduction device |
| CN108285944A (en) * | 2018-02-23 | 2018-07-17 | 叶吉利 | A kind of Novel steel iron pollution emission reduction device |
| CN108285945B (en) * | 2018-02-23 | 2019-01-08 | 唐山东海钢铁集团有限公司 | A kind of steel pollution emission reduction device |
| CN110813475A (en) * | 2019-11-12 | 2020-02-21 | 甘肃昊宇环保科技有限公司 | Rural village and town sewage treatment device and use method thereof |
| CN110813475B (en) * | 2019-11-12 | 2021-08-17 | 甘肃昊宇环保科技有限公司 | Rural village and town sewage treatment device and use method thereof |
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