CN203728857U - Quenching dry type recovery device for sensible heat of crushed molten blast furnace slag - Google Patents
Quenching dry type recovery device for sensible heat of crushed molten blast furnace slag Download PDFInfo
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- CN203728857U CN203728857U CN201420101452.4U CN201420101452U CN203728857U CN 203728857 U CN203728857 U CN 203728857U CN 201420101452 U CN201420101452 U CN 201420101452U CN 203728857 U CN203728857 U CN 203728857U
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- blast furnace
- furnace slag
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- 239000002893 slag Substances 0.000 title claims abstract description 51
- 238000010791 quenching Methods 0.000 title claims abstract description 18
- 230000000171 quenching effect Effects 0.000 title claims abstract description 18
- 238000011084 recovery Methods 0.000 title abstract description 8
- 239000002918 waste heat Substances 0.000 claims abstract description 19
- 238000010248 power generation Methods 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 14
- 239000007789 gas Substances 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 abstract description 6
- 239000010959 steel Substances 0.000 abstract description 6
- 238000002156 mixing Methods 0.000 abstract description 2
- 238000009856 non-ferrous metallurgy Methods 0.000 abstract description 2
- 238000009865 steel metallurgy Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 5
- 239000004568 cement Substances 0.000 description 4
- 239000011400 blast furnace cement Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000007712 rapid solidification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model relates to the field of energy recovery and utilization in steel and nonferrous metallurgy industries, in particular to a quenching dry type recovery device for sensible heat of crushed molten blast furnace slag. The device is characterized by comprising a heat exchanger, a rotating drum separator, a moving bed I, a moving bed II, a waste heat boiler and a power generator, wherein the heat exchanger is connected with a blast furnace through a slag trough, the rotating drum separator is arranged below the heat exchanger, the moving bed I is arranged below the rotating drum separator, and an outlet of the rotating drum separator is connected with an inlet of the moving bed II through a feeding track I; crushing rollers and a heat exchange pipe are arranged in the moving bed I; the moving bed I and the moving bed II are connected with a hot air inlet of the waste heat boiler through hot air pipelines; and a steam outlet of the waste heat boiler is connected with a steam inlet of the power generator. Compared with the prior art, the quenching dry type recovery device for the sensible heat of the crushed molten blast furnace slag has the benefits as follows: heat exchange and setting time of molten slag is shortened through mixing of heat transferring media and the molten slag, and the sensible heat of the blast furnace slag is recovered and utilized by combining moving bed heat exchange and waste heat power generation.
Description
Technical field
The energy recovery that the utility model relates in iron and steel, nonferrous metallurgy industry is utilized field, relates in particular to the device that the broken molten blast furnace slag sensible heat of a kind of quenching dry type reclaims.
Background technology
The development that Iron And Steel Industry is national economy provides important basic raw material, belongs to the energy, resource-integrated industry that resource consumption is large, also discharges a large amount of wastes in production steel product, and environment is caused to serious pollution.Molten blast furnace slag is the byproduct of blast furnace ironmaking, and its outflow temperature is 1400～1600 ℃, and heat content is about standard coal 60Kg/t (slag).Within 2012, China produces 6.579 hundred million tons of the pig iron, produces 0.35 ton of slag calculate by iron per ton, and the quantum of output of blast furnace slag is 2.3 hundred million tons.As can be seen here, blast-furnace cement sensible heat recovery is the important channel of iron and steel enterprise's energy-saving and emission-reduction.
Iron and steel enterprise generally adopts water quenching to process blast furnace slag at present, Zhu Ru Yin Bafa, figure daraf(reciprocal of farad), end filter method and Lhasa method etc.Not only flushing cinder water consumption is high for these water quenchings, sensible heat is not recycled effectively, but also to environment.Meanwhile, blast furnace slag solid resource utilization requires it to have certain activity, and noncrystal content is greater than 95%, only has by quenching and could realize its vitrifying.Therefore, how to reclaim efficiently the high temperature sensible heat of blast furnace slag, reduce pollution on the environment in its treating processes, meet again its resource utilization requirement, just become a urgent problem simultaneously.
Summary of the invention
The purpose of this utility model is to provide the device that the broken molten blast furnace slag sensible heat of a kind of quenching dry type reclaims, overcome the deficiencies in the prior art, utilize heat transferring medium to promote that slag solidifies heat exchange, high temperature heat transferring medium and high temperature clinker are carried out respectively to waste heat recovery and utilization, substantially realizing zero of new water uses, make the high-quality waste heat of slag obtain high efficiente callback, meanwhile, the slag after processing meets the requirement of making cement.
For solving the problems of the technologies described above, the technical solution of the utility model is:
The device that the broken molten blast furnace slag sensible heat of quenching dry type reclaims, comprise heat exchanger, rotary drum separating machine, moving-bed one, moving-bed two, waste heat boiler and power generation assembly, heat exchanger is connected with blast furnace through slag runner, heat exchanger below is provided with rotary drum separating machine, the below of rotary drum separating machine is provided with moving-bed one, and the outlet of rotary drum separating machine is connected with the entrance of moving-bed two through material loading track one; In described moving-bed one, be provided with breaker roll and heat transfer tube, the outlet of heat transfer tube is connected with the steam-in of power generation assembly; Moving-bed one is provided with gas blower one, moving-bed two is provided with gas blower two, moving-bed one is all connected with the hot-wind inlet of waste heat boiler through hot-blast pipe line with moving-bed two, the vapour outlet of waste heat boiler is connected with the steam-in of power generation assembly, and the outlet of moving-bed two is connected with the heat transferring medium holder entrance that is positioned at heat exchanger top through material loading track two.
In described heat exchanger, be provided with water wall, water wall is connected with the heat transfer tube in moving-bed one.
On described material loading track one and material loading track two, be equipped with feeding trolley.
Described heat exchanger is provided with tipper.
Compared with prior art, the beneficial effects of the utility model are:
By heat transferring medium, mix the heat exchange setting time that has shortened slag with slag, in conjunction with moving-bed heat exchange and cogeneration, realized the object with blast-furnace cement sensible heat recycle, the blast furnace slag obtaining, steam can be made cement and generating respectively; Compare with existing water quenching, effectively reclaimed blast-furnace cement sensible heat, saved dry grain slag energy consumption, realized zero of new water and used; Compare with the wind method of quenching, utilize heat transferring medium and water wall to realize the cooling fast of molten blast furnace slag, rely on rotary drum and crusher to realize the two-stage crushing of slag simultaneously; Energy consumption reduces greatly; Because the method did not have granulation means before slag solidifies, so can not produce the slag wool of high pollution, subsequent disposal is more easy.
Accompanying drawing explanation
Fig. 1 is the utility model example structure schematic diagram.
In figure: 1-blast furnace 2-heat transferring medium holder 3-slag runner 4-heat exchanger 5-water wall 6-tipper 7-hot-water line 8-rotary drum separating machine 9-rotary drum outlet 10-material loading rail car one 11-moving-bed one 12-breaker roll 13-heat transfer tube 14-gas blower one 15-steam-pipe 16-hot air duct one 17-material loading rail car two 18-gas blower two 19-moving-bed two 20-hot air duct two 21-hot-blast main 22-waste heat boiler 23-steam manifold 24-power generation assemblys
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further:
See Fig. 1, it is the device example structure schematic diagram that the broken molten blast furnace slag sensible heat of the utility model quenching dry type reclaims, heat exchanger 4 is connected with blast furnace 1 through slag runner 3, heat exchanger 4 belows are provided with rotary drum separating machine 8, the below of rotary drum separating machine 8 is provided with moving-bed 1, and rotary drum outlet 9 is connected with the entrance of moving-bed 2 19 through material loading rail car 1; In moving-bed 1, be provided with breaker roll 12 and heat transfer tube 13, the outlet of heat transfer tube 13 is connected with the steam manifold 23 at the place, steam-in of power generation assembly 24 through steam-pipe 15; Moving-bed 1 is provided with gas blower 1, moving-bed 2 19 is provided with gas blower 2 18, moving-bed 1 is connected with the hot-blast main 21 at the hot-wind inlet place of waste heat boiler 22 respectively through hot air duct 2 20 through hot air duct 1, moving-bed 2 19, the vapour outlet of waste heat boiler 22 is connected with the steam-in of power generation assembly 24 through steam manifold 23, and the outlet of moving-bed 2 19 is connected with heat transferring medium holder 2 entrances that are positioned at heat exchanger 4 tops through material loading rail car 2 17.In heat exchanger 4, be provided with water wall 5, water wall 5 is connected through hot-water line 7 with the heat transfer tube 13 in moving-bed 1.Heat exchanger 4 is provided with tipper 6.
The utility model utilizes heat exchanger 4, moving-bed 1 and moving-bed 2 19 to carry out the repeatedly recovery of waste heat, and generates electricity through waste heat boiler 22 and power generation assembly 24, is conducive to realize the object that energy fully reclaims, rationally utilizes.By two processes of heat absorption and release of heat transferring medium, heat transferring medium is realized and recycled, there is no the generation of solid waste.
The method that the utility model reclaims for the broken molten blast furnace slag sensible heat of quenching dry type, exactly by heat transferring medium and the heat exchange of slag mixing chilling are promoted to slag solidifies, then by water and air, respectively the waste heat of high temperature heat transferring medium and high temperature clinker is reclaimed, realize zero of new water and use, its concrete operation step is as follows:
1) temperature is not less than the molten blast furnace slag of 1450 ℃ from blast furnace 1 flows out, through slag runner 3, flow into the heat exchanger 4 and heat transferring medium mixed heat transfer after coagulation with water wall 5, effect due to water wall 5, the rapid solidification shrinkage of slag and departing from the inwall of heat exchanger 4, blast furnace slag temperature is down to below 850 ℃, heat transferring medium is heated to 650 ℃～700 ℃, and the water coolant in water wall is warming up to 80～90 ℃ and flow in the heat transfer tube 13 of moving-beds 1 through hot-water line 7;
2) utilize the tipping mechanism 6 on heat exchanger 4 that above-mentioned congealed mixt is poured in the rotary drum separating machine 8 that rotating speed is 20～100rpm, under the effect of gravity, realize the separated of the primary fragmentation of blast furnace slag and blast furnace slag and heat transferring medium, when clinker equivalent diameter is less than 50mm, by rotary drum outlet 9, entered in moving-bed 1, heat transferring medium is delivered in moving-bed 2 19 by material loading rail car 1, now blast furnace slag temperature is down to 750 ℃～800 ℃, and heat exchange medium temperature is down to 550 ℃～600 ℃;
3) in moving-bed 1, be provided with breaker roll 12 and heat transfer tube 13, it is the clinker of 10～30mm that breaker roll 12 becomes diameter by blast furnace slag secondary breaking, after the air that clinker and gas blower 1 blast and the abundant heat exchange of hot water in heat transfer tube 13, from moving-bed 1, discharge, air is heated to form the hot blast of 600 ℃～650 ℃, now blast furnace slag temperature is reduced to below 200 ℃, and vitreum content is about 95%, can send to cement mill making cement;
4) heat transferring medium is transported in moving-bed 2 19, after the abundant heat exchange of air inversion blasting with gas blower 2 18, air is heated to form the hot blast of 400 ℃～450 ℃, heat exchange medium temperature is down to below 150 ℃, be transported in heat transferring medium holder and store, for recycling, transporting of heat transferring medium adopts rail mounted feed mechanism, by material loading rail car 2 17, transported;
5) hot blast that moving-bed 1 and moving-bed 2 19 produce enters waste heat boiler 22 through hot-blast main 21 and produces 2.94～4.90Mpa, the medium temperature and medium pressure steam of 420 ℃, together with the steam of discharging with heat transfer tube in moving-bed 1 13 again, enter power generation assembly 24 generatings, realize the recycling of heat.What in embodiment, heat transferring medium adopted is the nodular cast iron balls of diameter 80～120mm.
The utility model utilizes between heat transferring medium and slag that heat exchange has reached that slag solidifies, vitreum and one-level broken, substantially realize dry-type pulverizing, saved water consumption, greatly reduced pollutant emission, realized zero of new water and used, energy-saving and emission-reduction and control pollution have been had to great meaning.
Claims (4)
1. the device that the broken molten blast furnace slag sensible heat of quenching dry type reclaims, it is characterized in that, comprise heat exchanger, rotary drum separating machine, moving-bed one, moving-bed two, waste heat boiler and power generation assembly, heat exchanger is connected with blast furnace through slag runner, heat exchanger below is provided with rotary drum separating machine, the below of rotary drum separating machine is provided with moving-bed one, and the outlet of rotary drum separating machine is connected with the entrance of moving-bed two through material loading track one; In described moving-bed one, be provided with breaker roll and heat transfer tube, the outlet of heat transfer tube is connected with the steam-in of power generation assembly; Moving-bed one is provided with gas blower one, moving-bed two is provided with gas blower two, moving-bed one is all connected with the hot-wind inlet of waste heat boiler through hot-blast pipe line with moving-bed two, the vapour outlet of waste heat boiler is connected with the steam-in of power generation assembly, and the outlet of moving-bed two is connected with the heat transferring medium holder entrance that is positioned at heat exchanger top through material loading track two.
2. the device that the broken molten blast furnace slag sensible heat of quenching dry type according to claim 1 reclaims, is characterized in that, in described heat exchanger, be provided with water wall, water wall is connected with the heat transfer tube in moving-bed one.
3. the device that the broken molten blast furnace slag sensible heat of quenching dry type according to claim 1 reclaims, is characterized in that, on described material loading track one and material loading track two, is equipped with feeding trolley.
4. the device that the broken molten blast furnace slag sensible heat of quenching dry type according to claim 1 and 2 reclaims, is characterized in that, described heat exchanger is provided with tipper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420101452.4U CN203728857U (en) | 2014-03-05 | 2014-03-05 | Quenching dry type recovery device for sensible heat of crushed molten blast furnace slag |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420101452.4U CN203728857U (en) | 2014-03-05 | 2014-03-05 | Quenching dry type recovery device for sensible heat of crushed molten blast furnace slag |
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| CN203728857U true CN203728857U (en) | 2014-07-23 |
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| CN201420101452.4U Expired - Lifetime CN203728857U (en) | 2014-03-05 | 2014-03-05 | Quenching dry type recovery device for sensible heat of crushed molten blast furnace slag |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103820588A (en) * | 2014-03-05 | 2014-05-28 | 中钢集团鞍山热能研究院有限公司 | Quenching dry type broken fusion blast furnace slag sensible heat recovery method and device |
| CN107144149A (en) * | 2017-07-05 | 2017-09-08 | 湘潭大学 | A kind of oscillatory type high temperature furnace slag waste-heat recovery device |
-
2014
- 2014-03-05 CN CN201420101452.4U patent/CN203728857U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103820588A (en) * | 2014-03-05 | 2014-05-28 | 中钢集团鞍山热能研究院有限公司 | Quenching dry type broken fusion blast furnace slag sensible heat recovery method and device |
| CN107144149A (en) * | 2017-07-05 | 2017-09-08 | 湘潭大学 | A kind of oscillatory type high temperature furnace slag waste-heat recovery device |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140723 |
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| CX01 | Expiry of patent term |