CN106086257A - A kind of iron and steel enterprise's Blast furnace slag waste heat recovery device and method - Google Patents
A kind of iron and steel enterprise's Blast furnace slag waste heat recovery device and method Download PDFInfo
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- CN106086257A CN106086257A CN201610574055.2A CN201610574055A CN106086257A CN 106086257 A CN106086257 A CN 106086257A CN 201610574055 A CN201610574055 A CN 201610574055A CN 106086257 A CN106086257 A CN 106086257A
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- 239000002893 slag Substances 0.000 title claims abstract description 99
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 77
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 40
- 239000002918 waste heat Substances 0.000 title claims abstract description 40
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 39
- 239000010959 steel Substances 0.000 title claims abstract description 39
- 238000011084 recovery Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000009413 insulation Methods 0.000 claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000000498 cooling water Substances 0.000 claims description 26
- 230000008569 process Effects 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 19
- 229910000805 Pig iron Inorganic materials 0.000 claims description 8
- 229910001369 Brass Inorganic materials 0.000 claims description 5
- 229910001021 Ferroalloy Inorganic materials 0.000 claims description 5
- 239000010951 brass Substances 0.000 claims description 5
- 239000012774 insulation material Substances 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 abstract description 7
- 150000002505 iron Chemical class 0.000 abstract description 7
- 230000004044 response Effects 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 239000003034 coal gas Substances 0.000 description 4
- 238000006722 reduction reaction Methods 0.000 description 4
- 239000000571 coke Substances 0.000 description 3
- 239000002826 coolant Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000011946 reduction process Methods 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
- C21B3/08—Cooling slag
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Details (AREA)
Abstract
The present invention relates to a kind of iron and steel enterprise's Blast furnace slag waste heat recovery device and method, belong to heat recovery technology field.This iron and steel enterprise's Blast furnace slag waste heat recovery device intermediate roll and heat insulation wall are concentric cylinders and cylinder is positioned at inside heat insulation wall, heat insulation wall cylinder is respectively provided on two sides with outlet II and water inlet II up and down, heat insulation wall is respectively arranged on the left side and the right side superposed slag inlet and is positioned at the slag notch of bottom, centre of the drum position is provided with shaft, being uniformly distributed on hollow center axle on shaft and be provided with impeller, central shaft rear and front end is provided with water inlet I and outlet I.It is an object of the invention to be effective utilization by recovery blast furnace slag waste heat, improve the blast furnace slag waste heat response rate, exploitation iron and steel enterprise blast furnace slag waste heat recovery technology, thus provide a kind of method of waste heat recovery in iron and steel enterprise, the recovery of iron and steel enterprise's blast furnace slag waste heat can be widely used in.
Description
Technical field
The present invention relates to a kind of iron and steel enterprise's Blast furnace slag waste heat recovery device and method, belong to heat recovery technology field.
Background technology
The process that ferrum is substantially restored from the iron containing compoundses such as its natural form Ore by ironmaking processes.
Iron smelting method mainly has blast furnace process, direct-reduction process, smelting reduction process etc., and its principle is Ore (reduction in specific atmosphere
Substance C O, H2, C；Preference temperature etc.) obtain the pig iron after reduction by physical reaction.The pig iron in addition to small part is used for casting,
It is mostly as steelmaking feed.Blast furnace ironmaking is the main method of modern ironmaking, the important step in iron and steel production.This
Method is formed by shaft furnace ironmaking development in ancient times, improvement.Although a lot of new iron-refining process of countries in the world research and development, but by
Good in blast furnace technology economic indicator, technique is simple, and volume of production is big, and labor productivity is high, and energy consumption is low, and this method produces
Ferrum still account for more than the 95% of World Iron total output.
During blast furnace ironmaking, from furnace roof, (general furnace roof is made up of with hopper material kind, and modernized blast furnace is clock valve furnace roof and nothing
Bell furnace roof) constantly load iron ore, coke, flux, blow into hot blast (1000～1300 is Celsius from the air port of bottom house
Degree), spray into the fuel such as oil, coal or natural gas.Load the iron ore in blast furnace, mainly ferrum and the compound of oxygen.At high temperature,
Oxygen in iron ore is captured out by carbon and the carbon monoxide of carbon burning generation in coke and in injection material, obtains ferrum, this
Process is called reduction.Iron ore produces the pig iron by reduction reaction, and molten iron is released from tapping hole.Coal gas is derived from furnace roof, through removing
After dirt, as industrial coal gas.Modernized blast furnace can also utilize the high pressure of furnace roof, with the part coal gas generating derived.Iron mine
The flux such as the limestone within adding stove of the ash in stone-like pulse, coke and injection material in stone are combined generation slag, from tapping hole
Discharge respectively with slag notch.
China is steel industry big country, steel industry or big power consumer now, also can produce while consuming the energy
Substantial amounts of heat.The waste heat major part of waste residue produced by blast furnace ironmaking fails to reclaim, and not only causes the waste of the energy also to life
State environment causes pollution.Steel industry is to consume energy rich and influential family, can produce substantial amounts of heat while consuming the energy, the most right
Its recovery producing waste heat is particularly important.Along with the continuous progress of modernization, the waste of the energy and the pollution to environment
Have become as very important problem, solved extremely urgent.And the waste heat produced is unrestrained due to a series of reasons major part
Expense is fallen, and therefore blast furnace waste heat recovery exists huge recovery potentiality.From the point of view of present circumstances, China's low temperature exhaust heat reclaims almost
Zero, middle temperature waste heat recovery is about 30%.Also exist among these and greatly waste, so how carry during blast furnace ironmaking
High energy-saving efficiency and raising environmental conservation are particularly important.Along with the growth of world steel demand and sending out of steel and iron industry
Exhibition, the discharge capacity of blast furnace slag increases day by day.If these blast furnace slags are not added with recycling treatment, the most still pole of available resources
Big waste, and accumulate over a long period, occupation of land certainly will be caused to invade field, pollute a series of serious problems such as environment.Therefore, blast furnace slag resource
Change and both can turn waste into wealth, the pollution of environment, appropriation of land etc. can be reduced again, thus reach economic benefit and social benefit
The situation of doulbe-sides' victory.
In the last few years, in some iron and steel enterprises, after blast furnace slag uses the granulating techniques such as Water Quenching, make use of portion
Dividing waste residue to make the raw material such as cement, engineering backfill material, agriculture fertilizer, iron making and sintering, blast furnace utilization rate obtains certain raising.But
It is that the processing method such as shrend is all using blast furnace slag as the purpose of making certain raw material, there is utilization rate of waste heat low and be difficult to
The problems such as realization.Therefore, people have been working hard to seek not only energy-conserving and environment-protective but also the blast furnace slag that easily realizes processes Technology.
Summary of the invention
The problem existed for above-mentioned prior art and deficiency, the present invention provides a kind of iron and steel enterprise blast furnace slag waste heat to reclaim
Apparatus and method.It is an object of the invention to be effective utilization by recovery blast furnace slag waste heat, improve the blast furnace slag waste heat response rate,
Exploitation iron and steel enterprise blast furnace slag waste heat recovery technology, thus provide a kind of method of waste heat recovery in iron and steel enterprise, permissible
It is widely used in the recovery of iron and steel enterprise's blast furnace slag waste heat.The present invention is achieved through the following technical solutions.
A kind of iron and steel enterprise Blast furnace slag waste heat recovery device, including slag inlet 3, slag notch 4, cylinder 7, heat insulation wall 8 with stir
Mixing axle, described shaft includes that water inlet I 1, outlet I 2, central shaft 5 and impeller 6, cylinder 7 and heat insulation wall 8 are concentric cylinders
And cylinder 7 is positioned at heat insulation wall 8 inside, heat insulation wall 8 cylinder is respectively provided on two sides with outlet II 10 and water inlet II 9 up and down, insulation
Wall 8 is respectively arranged on the left side and the right side superposed slag inlet 3 and is positioned at the slag notch 4 of bottom, and cylinder 7 center is provided with stirring
Axle, the hollow center axle 5 on shaft is uniformly distributed and is provided with impeller 6, and central shaft 5 rear and front end is provided with water inlet I 1 and water outlet
Mouth I 2.
Described impeller 6 uses dystectic Steel material, is shaped as sector structure, is made up of five sectors.
Described cylinder 7 uses brass material.
Insulation material on described heat insulation wall 8 is the pig iron or ferroalloy materials.
The application process of a kind of iron and steel enterprise Blast furnace slag waste heat recovery device, it concretely comprises the following steps: by discharge in boiler
Temperature is that 1450 DEG C ~ 1650 DEG C blast furnace slags are flowed in cylinder 7 by slag inlet 3, will cool down water from water inlet I 1 and water inlet II 9
It is passed through and flows separately through hollow center axle 5 and cylinder 7 and heat insulation wall 8 hole, by blast furnace slag and cooling water heat exchange, in the process
Hollow center axle 5 rotates, and makes impeller 6 rotate, and makes blast furnace slag flow out from slag notch 4.
The temperature being passed through of described cooling water is 20 DEG C.
The heat exchange area of described cylinder 7 is 45 ~ 135.
The invention has the beneficial effects as follows:
1, this Blast furnace slag waste heat recovery device, when cooling down the heat exchange of water and blast furnace slag, both are not directly contacted with, and decrease peace
Full hidden danger, safety is high, and recovering effect is good.
2, the impeller on central shaft uses sector structure, and blast furnace slag can be made to be sufficiently stirred for, and strengthens heat exchange, improves waste heat and returns
Produce effects rate.Central axle designs is hollow axle, is passed through cooling water, cooling wheel, increases impeller life.
3, this Blast furnace slag waste heat recovery device cost of manufacture is cheap, and operation is simple, easily operates.
Accompanying drawing explanation
Fig. 1 is apparatus of the present invention structural representations；
Fig. 2 is apparatus of the present invention explosive views；
Fig. 3 is schematic front view of the present invention；
Fig. 4 is apparatus of the present invention shaft schematic diagrams.
In figure: 1-water inlet I, 2-outlet I, 3-slag inlet, 4-slag notch, 5-central shaft, 6-impeller, 7-cylinder, 8-
Heat insulation wall, 9-water inlet II, 10-outlet II.
Detailed description of the invention
Below in conjunction with the accompanying drawings and detailed description of the invention, the invention will be further described.
Embodiment 1
As shown in Figures 1 to 4, this iron and steel enterprise's Blast furnace slag waste heat recovery device, including slag inlet 3, slag notch 4, cylinder 7, insulation
Wall 8 and shaft, described shaft includes that water inlet I 1, outlet I 2, central shaft 5 and impeller 6, cylinder 7 and heat insulation wall 8 are same
It is internal that stem body and cylinder 7 are positioned at heat insulation wall 8, and heat insulation wall 8 cylinder is respectively provided on two sides with outlet II 10 and water inlet II up and down
9, heat insulation wall 8 is respectively arranged on the left side and the right side superposed slag inlet 3 and is positioned at the slag notch 4 of bottom, and cylinder 7 centre bit installs
Having shaft, the hollow center axle 5 on shaft is uniformly distributed and is provided with impeller 6, central shaft 5 rear and front end is provided with water inlet I 1
With outlet I 2.
Wherein impeller 6 uses dystectic Steel material, is shaped as sector structure, is made up of five sectors；Cylinder 7 is adopted
Use brass material；Insulation material on heat insulation wall 8 is the pig iron or ferroalloy materials.
The application process of this iron and steel enterprise's Blast furnace slag waste heat recovery device, it concretely comprises the following steps: the temperature will discharged in boiler
Degree is that 1500 DEG C of blast furnace slags are flowed in cylinder 7 by slag inlet 3, is passed through respectively from water inlet I 1 and water inlet II 9 by cooling water
Flow through hollow center axle 5 and cylinder 7 and heat insulation wall 8 hole, by blast furnace slag and cooling water heat exchange, in the process hollow center
Axle 5 rotates, and makes impeller 6 rotate, and makes blast furnace slag flow out from slag notch 4；In the process
The inlet temperature of cooling water is 20 DEG C；The heat exchange area of cylinder 7 is 145, and cooling water outlet temperature is 307 DEG C, at this
At a temperature of to cool down the density of water be 670kg/m3, cooling specific heat of water is 6.369 kJ/kg K, takes coolant outlet a diameter of
180mm, cooling water flow velocity is 10m/s, and blast furnace blast furnace slag mass flow is 600kg/s, and blast furnace slag specific heat is 1.96 kJ/kg
K。
It is 1224695J that final cooling water obtains heat, and it is 1713432J that blast furnace slag loses heat, and the thermal efficiency is 0.715.
Embodiment 2
As shown in Figures 1 to 4, this iron and steel enterprise's Blast furnace slag waste heat recovery device, including slag inlet 3, slag notch 4, cylinder 7, insulation
Wall 8 and shaft, described shaft includes that water inlet I 1, outlet I 2, central shaft 5 and impeller 6, cylinder 7 and heat insulation wall 8 are same
It is internal that stem body and cylinder 7 are positioned at heat insulation wall 8, and heat insulation wall 8 cylinder is respectively provided on two sides with outlet II 10 and water inlet II up and down
9, heat insulation wall 8 is respectively arranged on the left side and the right side superposed slag inlet 3 and is positioned at the slag notch 4 of bottom, and cylinder 7 centre bit installs
Having shaft, the hollow center axle 5 on shaft is uniformly distributed and is provided with impeller 6, central shaft 5 rear and front end is provided with water inlet I 1
With outlet I 2.
Wherein impeller 6 uses dystectic Steel material, is shaped as sector structure, is made up of five sectors；Cylinder 7 is adopted
Use brass material；Insulation material on heat insulation wall 8 is the pig iron or ferroalloy materials.
The application process of this iron and steel enterprise's Blast furnace slag waste heat recovery device, it concretely comprises the following steps: the temperature will discharged in boiler
Degree is that 1500 DEG C of blast furnace slags are flowed in cylinder 7 by slag inlet 3, is passed through respectively from water inlet I 1 and water inlet II 9 by cooling water
Flow through hollow center axle 5 and cylinder 7 and heat insulation wall 8 hole, by blast furnace slag and cooling water heat exchange, in the process hollow center
Axle 5 rotates, and makes impeller 6 rotate, and makes blast furnace slag flow out from slag notch 4；In the process
The temperature of cooling water inlet is 20 DEG C；The heat exchange area of cylinder 7 is 45, and cooling water outlet temperature is 248 DEG C, in this temperature
The density of the lower cooling water of degree is 799kg/m3, cooling specific heat of water is 4.844kJ/kg K, takes coolant outlet a diameter of
180mm；Taking cooling water flow velocity is 10m/s, and blast furnace blast furnace slag mass flow is 600kg/s, and blast furnace slag specific heat is 1.96 kJ/
kg·K。
It is 882441J that final cooling water obtains heat, and it is 1362984J that blast furnace slag loses heat, and the thermal efficiency is 0.647.
Embodiment 3
As shown in Figures 1 to 4, this iron and steel enterprise's Blast furnace slag waste heat recovery device, including slag inlet 3, slag notch 4, cylinder 7, insulation
Wall 8 and shaft, described shaft includes that water inlet I 1, outlet I 2, central shaft 5 and impeller 6, cylinder 7 and heat insulation wall 8 are same
It is internal that stem body and cylinder 7 are positioned at heat insulation wall 8, and heat insulation wall 8 cylinder is respectively provided on two sides with outlet II 10 and water inlet II up and down
9, heat insulation wall 8 is respectively arranged on the left side and the right side superposed slag inlet 3 and is positioned at the slag notch 4 of bottom, and cylinder 7 centre bit installs
Having shaft, the hollow center axle 5 on shaft is uniformly distributed and is provided with impeller 6, central shaft 5 rear and front end is provided with water inlet I 1
With outlet I 2.
Wherein impeller 6 uses dystectic Steel material, is shaped as sector structure, is made up of five sectors；Cylinder 7 is adopted
Use brass material；Insulation material on heat insulation wall 8 is the pig iron or ferroalloy materials.
The application process of this iron and steel enterprise's Blast furnace slag waste heat recovery device, it concretely comprises the following steps: the temperature will discharged in boiler
Degree is that 1500 DEG C of blast furnace slags are flowed in cylinder 7 by slag inlet 3, is passed through respectively from water inlet I 1 and water inlet II 9 by cooling water
Flow through hollow center axle 5 and cylinder 7 and heat insulation wall 8 hole, by blast furnace slag and cooling water heat exchange, in the process hollow center
Axle 5 rotates, and makes impeller 6 rotate, and makes blast furnace slag flow out from slag notch 4；In the process
The temperature of cooling water inlet is 20 DEG C；The heat exchange area of cylinder 7 is 90, and cooling water outlet temperature is 294 DEG C, in this temperature
The density of the lower cooling water of degree is 722kg/m3, it is a diameter of that cooling specific heat of water is that 5.611 kJ/kg K take coolant outlet
180mm；Taking cooling water flow velocity is 10m/s, and blast furnace blast furnace slag mass flow is 600kg/s, and blast furnace slag specific heat is 1.96 kJ/
kg·K。
It is 1110013J that final cooling water obtains heat, and it is 1641696J that blast furnace slag loses heat, and the thermal efficiency is 0.676.
Above in association with accompanying drawing, the detailed description of the invention of the present invention is explained in detail, but the present invention is not limited to above-mentioned
Embodiment, in the ken that those of ordinary skill in the art are possessed, it is also possible to before without departing from present inventive concept
Put that various changes can be made.
Claims (7)
1. iron and steel enterprise's Blast furnace slag waste heat recovery device, it is characterised in that: include slag inlet (3), slag notch (4), cylinder
(7), heat insulation wall (8) and shaft, described shaft includes water inlet I (1), outlet I (2), central shaft (5) and impeller (6),
Cylinder (7) and heat insulation wall (8) are concentric cylinders and cylinder (7) to be positioned at heat insulation wall (8) internal, the upper and lower both sides of heat insulation wall (8) cylinder
Being respectively equipped with outlet II (10) and water inlet II (9), heat insulation wall (8) is respectively arranged on the left side and the right side superposed slag inlet
(3) and be positioned at the slag notch (4) of bottom, cylinder (7) center is provided with shaft, on the hollow center axle (5) on shaft
Being uniformly distributed and be provided with impeller (6), central shaft (5) rear and front end is provided with water inlet I (1) and outlet I (2).
Iron and steel enterprise the most according to claim 1 Blast furnace slag waste heat recovery device, it is characterised in that: described impeller (6) is adopted
With Steel material, it is shaped as sector structure, is made up of five sectors.
Iron and steel enterprise the most according to claim 1 Blast furnace slag waste heat recovery device, it is characterised in that: described cylinder (7) is adopted
Use brass material.
Iron and steel enterprise the most according to claim 1 Blast furnace slag waste heat recovery device, it is characterised in that: described heat insulation wall (8)
On insulation material be the pig iron or ferroalloy materials.
5., according to an application process for the arbitrary iron and steel enterprise's Blast furnace slag waste heat recovery device of Claims 1-4, its feature exists
In concretely comprising the following steps: be that 1450 DEG C ~ 1650 DEG C blast furnace slags are flowed into cylinder (7) by slag inlet (3) by the temperature discharged in boiler
In, cooling water is passed through from water inlet I (1) and water inlet II (9) and flows separately through hollow center axle (5) and cylinder (7) and protect
Temperature wall (8) hole, by blast furnace slag and cooling water heat exchange, hollow center axle (5) rotates in the process, makes impeller (6) rotate, makes
Blast furnace slag flows out from slag notch (4).
The application process of iron and steel enterprise the most according to claim 5 Blast furnace slag waste heat recovery device, it is characterised in that: described
The temperature being passed through of cooling water is 20 DEG C.
The application process of iron and steel enterprise the most according to claim 5 Blast furnace slag waste heat recovery device, it is characterised in that: described
The heat exchange area of cylinder (7) is 45 ~ 135.
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| Application Number | Priority Date | Filing Date | Title |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109909269A (en) * | 2019-04-02 | 2019-06-21 | 南京华电节能环保设备有限公司 | It is a kind of to utilize high-temperature slag secondary electricity generation recyclable device |
| CN113637812A (en) * | 2021-08-12 | 2021-11-12 | 盘如珍 | Energy-saving high-temperature slag dry-process waste heat recovery device |
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| CN102888473A (en) * | 2012-10-01 | 2013-01-23 | 许征鹏 | Blast furnace slag granulation and waste heat recovery device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109909269A (en) * | 2019-04-02 | 2019-06-21 | 南京华电节能环保设备有限公司 | It is a kind of to utilize high-temperature slag secondary electricity generation recyclable device |
| CN113637812A (en) * | 2021-08-12 | 2021-11-12 | 盘如珍 | Energy-saving high-temperature slag dry-process waste heat recovery device |
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