CN204265776U - A kind of metallurgical slag granulation and heat reclaiming system thereof - Google Patents
A kind of metallurgical slag granulation and heat reclaiming system thereof Download PDFInfo
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- CN204265776U CN204265776U CN201420703161.2U CN201420703161U CN204265776U CN 204265776 U CN204265776 U CN 204265776U CN 201420703161 U CN201420703161 U CN 201420703161U CN 204265776 U CN204265776 U CN 204265776U
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- 239000002893 slag Substances 0.000 title claims abstract description 285
- 238000005469 granulation Methods 0.000 title claims abstract description 73
- 230000003179 granulation Effects 0.000 title claims abstract description 73
- 239000002245 particle Substances 0.000 claims abstract description 157
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 109
- 239000003546 flue gas Substances 0.000 claims abstract description 109
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 107
- 239000007789 gas Substances 0.000 claims abstract description 82
- 230000008676 import Effects 0.000 claims description 84
- 238000009826 distribution Methods 0.000 claims description 19
- 238000011084 recovery Methods 0.000 abstract description 10
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005034 decoration Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 14
- 239000012535 impurity Substances 0.000 description 12
- 239000007787 solid Substances 0.000 description 12
- 238000010521 absorption reaction Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 8
- 238000010791 quenching Methods 0.000 description 7
- 239000003818 cinder Substances 0.000 description 6
- 230000000171 quenching effect Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000007908 dry granulation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000000693 micelle Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
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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
-
- 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
-
- 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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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
A kind of metallurgical slag granulation and heat reclaiming system thereof, this system mainly comprises slag granulating and fluidized bed heat exchanger device, slag particle heat exchange unit and gas heat exchange unit, is interconnected between described parts by corresponding pipeline.In slag granulating and fluidized bed heat exchanger device, slag is granulated into small-particle by high-speed jet, and carry out heat exchange with water and gas respectively, be then delivered to slag particle heat exchange unit through conveyer, gas heating enters gas converting heat unit after becoming high-temperature flue gas; At slag particle heat exchange unit, slag particle is further cooled rear discharge; At gas converting heat unit, high-temperature flue gas through superheater section and economizer section, is discharged after becoming low-temperature flue gas successively.This system adopts subdivision decoration form, implements multistage energy recovery, has multi-combined structure, can produce the variant productions such as hot water, hot gas, steam or electric energy, effectively can solve metallurgical slag granulation and energy recovery problem.
Description
Technical field
The utility model relates to a kind of metallurgical slag granulation and heat reclaiming system thereof, belongs to metallurgical cinder process and heat recovery technical field.
Background technology
Slag is high temperature, molten state product in metallurgical production process, as the blast furnace slag, slag, copper ashes etc. of liquid state, wherein contains abundant heat resource.
Such as liquid blast furnace is a kind of typical slag, and China's blast furnace slag generation about 2.5 hundred million tons in 2013, its treatment technology is representative in slag treatment technology.Blast furnace slag is a kind of silicate material of good performance, and the blast furnace slag of quenching forms the amorphous substance of a large amount of glassy phases, has higher hydration activity, is the high quality raw material producing the material of construction such as cement.Meanwhile, liquid blast furnace temperature, between 1300 DEG C to 1600 DEG C, has very high heat energy recycle and is worth.
At present, liquid blast furnace mainly adopts water quenching process, and the blast furnace slag after shrend can be used for making the material of construction such as cement, and the subject matter that water quenching exists has: water loss is large; Produce a large amount of H
2s and SO
xcause topsoil; Heat energy is not recycled; Water Quenching Slag water ratio is high, need carry out drying treatment; Subparticle contained by recirculated water is to the wearing and tearing of the parts such as water pump and valve and block very serious, and system maintenance work amount is large, adds maintenance cost.
For the shortcoming of blast furnace cinder water quenching technique, 20 century 70s are external just to have begun one's study and not only to have economized on water but also can the liquid blast furnace dry process equipment of recovering liquid heat energy of blast furnace.
The liquid blast furnace dry granulation instrument and supplies occurred at present, more representational have wind to quench method and centrifuging.The wind method of quenching produces high velocity air by high-power granulation blower fan to dispel, be granulated liquid blast furnace; its main drawback is that power consumption is large, equipment bulky complex, floor space large, investment and working cost high; when liquid blast furnace fluctuations in discharge; wind speed and air quantity are not easily coordinated, and a large amount of cold wind systems of entering also reduces the quality of heat recuperation.Centrifuging relies on the centrifugal force of rotating disk or the generation of revolving cup high speed rotating by liquid blast furnace slag granulation; although do not need the highly energy-consuming equipment that granulation blower fan is such; but at high temperature the reliability of the granulating device of high speed rotating is poor; in addition the temperature and the fluctuations in discharge that are granulated effect liquid towards blast furnace slag are comparatively responsive; only unsatisfactory by adjusting rotary speed effect; high-temperature slag concentrates a certain position of high-speed impact device interior, also easily causes the local superheating of equipment and damage equipment.
The granulation of slag has decisive significance for slag treatment recycling and energy recovery; and the energy consumption in granulation and energy recovery process is decision technique and a key factor of system economy; therefore a kind of power consumption is studied relatively low; non-secondary pollution; reliable, great lot of water resources can be saved and the System and method for that fully can reclaim slag heat energy is that current industry is badly in need of.
Utility model content
The purpose of this utility model is to provide a kind of and has that power consumption is relatively low, energy recovery quality is high and the metallurgical slag granulation of non-secondary pollution and heat reclaiming system thereof.
The technical solution of the utility model is as follows:
The first metallurgical slag granulation that the utility model provides and heat reclaiming system thereof, it is characterized in that, described system comprises:
A, slag granulating and fluidized bed heat exchanger device, it comprises fluidized-bed body, slag funnel, high-speed jet granulation apparatus, cyclonic separator and is arranged in the heat exchange pipe laying of fluidized-bed body lower part, slag-drip opening, air distribution plate, air compartment and inlet mouth; Described fluidized-bed body adopts water wall structure; Described high-speed jet granulation apparatus is arranged in the top of fluidized-bed body;
B, slag particle heat exchange unit, this slag particle heat exchange unit is connected with the slag-drip opening of slag granulating and fluidized bed heat exchanger bottom of device by slag particle handling equipment, this slag particle heat exchange unit internal layout water wall, which is provided with the import of high temperature slag particle, hot water inlet, low temperature slag particle relief outlet and saturation steam outlet; Hot water is exported by saturation steam and discharges after water wall with the high temperature slag particle heat exchange from slag granulating and fluidized bed heat exchanger device;
C, gas converting heat unit, this gas converting heat unit contains saturation steam import, high-temperature flue gas import, low temperature feedwater import, superheater section, economizer section, low-temperature flue gas outlet, superheated vapour outlet and hot water outlet; High-temperature flue gas from cyclonic separator is connected with described high-temperature flue gas import by pipeline, and flue gas, is then discharged through low-temperature flue gas outlet successively through superheater section and economizer section in gas converting heat unit inside; Enter described superheater section from slag granulating and the saturation steam of fluidized bed heat exchanger device and the saturation steam of slag particle heat exchange unit from saturation steam import, then exported by superheated vapour and discharge; Low temperature feedwater enters described economizer section through low temperature feedwater import, then after hot water outlet is discharged, enters the water wall of slag granulating and fluidized bed heat exchanger device and the water wall of slag particle heat exchange unit respectively by pipeline.
The second metallurgical slag granulation that the utility model provides and heat reclaiming system thereof, is characterized in that, described system comprises:
A, slag granulating and fluidized bed heat exchanger device, it comprises fluidized-bed body, slag funnel, high-speed jet granulation apparatus, cyclonic separator and is arranged in the heat exchange pipe laying of fluidized-bed body lower part, slag-drip opening, air distribution plate, air compartment and inlet mouth; Described fluidized-bed body adopts water wall structure; Described high-speed jet granulation apparatus is arranged in the top of fluidized-bed body;
B, slag particle heat exchange unit, this slag particle heat exchange unit is connected with the slag-drip opening of slag granulating and fluidized bed heat exchanger bottom of device by slag particle handling equipment, this slag particle heat exchange unit internal layout water wall, which is provided with the import of high temperature slag particle, low temperature feedwater import, low temperature slag particle relief outlet and vapour outlet; Low temperature feedwater is discharged by vapour outlet after water wall with the high temperature slag particle heat exchange from slag granulating and fluidized bed heat exchanger device;
C, gas converting heat unit, this gas converting heat unit contains high-temperature flue gas import, low temperature feedwater import, low-temperature flue gas outlet and vapour outlet; High-temperature flue gas from cyclonic separator is connected with described high-temperature flue gas import by pipeline, then discharges through low-temperature flue gas outlet; Low temperature feedwater enters gas converting heat unit through low temperature feedwater import, then discharges through vapour outlet.
The third metallurgical slag granulation that the utility model provides and heat reclaiming system thereof, it is characterized in that, described system comprises:
A, slag granulating and fluidized bed heat exchanger device, it comprises fluidized-bed body, slag funnel, high-speed jet granulation apparatus, cyclonic separator and is arranged in the heat exchange pipe laying of fluidized-bed body lower part, slag-drip opening, air distribution plate, air compartment and inlet mouth; Described fluidized-bed body adopts water wall structure; Described high-speed jet granulation apparatus is arranged in the top of fluidized-bed body;
B, slag particle heat exchange unit, this slag particle heat exchange unit is connected with the slag-drip opening of slag granulating and fluidized bed heat exchanger bottom of device by slag particle handling equipment, this slag particle heat exchange unit internal layout water wall, which is provided with the import of high temperature slag particle, hot water inlet, cryogenic gas import, low temperature slag particle relief outlet, saturation steam outlet and high-temperature flue gas outlet; Hot water is discharged with from export by saturation steam after the high temperature slag particle heat exchange of slag granulating and fluidized bed heat exchanger device through water wall, while cryogenic gas and the heat exchange of high temperature slag particle after to export through high-temperature flue gas and discharge;
C, gas converting heat unit, this gas converting heat unit contains saturation steam import, high-temperature flue gas import, low temperature feedwater import, superheater section, economizer section, low-temperature flue gas outlet, superheated vapour outlet and hot water outlet; High-temperature flue gas from cyclonic separator is connected with described high-temperature flue gas import by pipeline with the high-temperature flue gas from slag particle heat exchange unit, and flue gas, is then discharged through low-temperature flue gas outlet successively through superheater section and economizer section in gas converting heat unit inside; Enter described superheater section from slag granulating and the saturation steam of fluidized bed heat exchanger device and the saturation steam of slag particle heat exchange unit from saturation steam import, then exported by superheated vapour and discharge; Low temperature feedwater enters described economizer section through low temperature feedwater import, then after hot water outlet is discharged, enters the water wall of slag granulating and fluidized bed heat exchanger device and the water wall of slag particle heat exchange unit respectively by pipeline.
The 4th kind of metallurgical slag granulation and heat reclaiming system thereof that the utility model provides, it is characterized in that, described system comprises:
A, slag granulating and fluidized bed heat exchanger device, it comprises fluidized-bed body, slag funnel, high-speed jet granulation apparatus, cyclonic separator and is arranged in the heat exchange pipe laying of fluidized-bed body lower part, slag-drip opening, air distribution plate, air compartment and inlet mouth; Described fluidized-bed body adopts water wall structure; Described high-speed jet granulation apparatus is arranged in the top of fluidized-bed body;
B, slag particle heat exchange unit, this slag particle heat exchange unit is connected with the slag-drip opening of slag granulating and fluidized bed heat exchanger bottom of device by slag particle handling equipment, this slag particle heat exchange unit internal layout water wall, which is provided with the import of high temperature slag particle, low temperature feedwater import, cryogenic gas import, low temperature slag particle relief outlet, vapour outlet and high-temperature flue gas outlet; Low temperature feedwater is discharged by vapour outlet with from after the high temperature slag particle heat exchange of slag granulating and fluidized bed heat exchanger device through water wall, exports simultaneously discharge after cryogenic gas and the heat exchange of high temperature slag particle through high-temperature flue gas;
C, gas converting heat unit, this gas converting heat unit contains high-temperature flue gas import, low temperature feedwater import, low-temperature flue gas outlet and vapour outlet; High-temperature flue gas from cyclonic separator is connected with described high-temperature flue gas import by pipeline with the high-temperature flue gas from slag particle heat exchange unit, then discharges through low-temperature flue gas outlet; Low temperature feedwater enters gas converting heat unit through low temperature feedwater import, then discharges through vapour outlet.
In system described above, be further characterized in that: institute's fluidized-bed body is approximate bucket type wide at the top and narrow at the bottom; Described high-speed jet granulation apparatus next-door neighbour is arranged in below slag funnel.Described air distribution plate is in tilted layout, and horizontal by 0≤a≤30 ° angle.
The utility model compared with prior art has the following advantages:
1. a kind of metallurgical slag granulation provided by the utility model and heat reclaiming system thereof will save a large amount of washing slag water, and not produce H
2s and SO
xdeng toxic gas, simultaneously can efficiently, the heat energy of high-quality recovery slag;
2. than slag heat energy recovery equipment in the past and technique; a kind of metallurgical slag granulation provided by the utility model and heat reclaiming system thereof adopt subdivision decoration form; implement multistage energy recovery; different unitized constructions; the variant productions such as hot water, hot gas, steam or electric energy can be produced; market adaptability is strong, and economic return is high.The high-temperature flue gas that slag granulating described in the utility model and fluidized bed heat exchanger device produce also can directly supply relevant device or technique, as blast furnace or burning boiler etc. without cyclonic separator.
3. the high-speed jet granulation apparatus that the utility model adopts directly does not contact liquid high-temperature slag, and equipment is run more reliable, the slag micelle horizontal velocity after fragmentation is little, and horizontal flight distance is shorter, and this is all conducive to volume and the floor space of reduction equipment; Effectively can avoid the high-speed impact of high temperature slag particle and water wall simultaneously, contribute to guarantee equipment operating safety and improve equipment operation life; Flexible can be carried out according to the flow of slag; It is low that the granulation apparatus of high-speed jet simultaneously runs power consumption, and energy recovery quality is high.
Accompanying drawing explanation
Fig. 1 is the structural principle schematic diagram of the first metallurgical slag granulation provided by the utility model and heat reclaiming system embodiment thereof.
Fig. 2 is the structural principle schematic diagram of the second metallurgical slag granulation provided by the utility model and heat reclaiming system embodiment thereof.
Fig. 3 is the structural principle schematic diagram of the third metallurgical slag granulation provided by the utility model and heat reclaiming system embodiment thereof.
Fig. 4 is the structural principle schematic diagram of the 4th kind of metallurgical slag granulation provided by the utility model and heat reclaiming system embodiment thereof.
In figure: 1-fluidized-bed body; 2-slag funnel; 3-high-speed jet granulation apparatus; 4-cyclonic separator; 5-air compartment; 6-heat exchange pipe laying; 7-slag-drip opening; 8-air distribution plate; 9-inlet mouth; 10-slag particle heat exchange unit; 11-gas converting heat unit; 12-slag granulating and fluidized bed heat exchanger device.
Embodiment
The structure of metallurgical slag granulation that the utility model provides and heat reclaiming system thereof, principle and and working process is described in detail below in conjunction with accompanying drawing.
Fig. 1 is the structural principle schematic diagram of the first metallurgical slag granulation provided by the utility model and heat reclaiming system embodiment thereof, and this system comprises:
A, slag granulating and fluidized bed heat exchanger device 12, it comprises fluidized-bed body 1, slag funnel 2, high-speed jet granulation apparatus 3, cyclonic separator 4 and is arranged in the heat exchange pipe laying 6 of fluidized-bed body lower part, slag-drip opening 7, air distribution plate 8, air compartment 5 and inlet mouth 9; Described fluidized-bed body 1 adopts water wall structure; Described high-speed jet granulation apparatus 3 is arranged in the top of fluidized-bed body; Fluidized-bed body is approximate bucket type wide at the top and narrow at the bottom; Described high-speed jet granulation apparatus next-door neighbour is arranged in below slag funnel; Described air distribution plate is in tilted layout, and horizontal by 0≤a≤30 ° angle.
B, slag particle heat exchange unit 10, this slag particle heat exchange unit is connected with the slag-drip opening 7 bottom slag granulating and fluidized bed heat exchanger device 12 by slag particle handling equipment, this slag particle heat exchange unit internal layout water wall, which is provided with the import of high temperature slag particle, hot water inlet, low temperature slag particle relief outlet and saturation steam outlet; Hot water is exported by saturation steam and discharges after water wall with the high temperature slag particle heat exchange from slag granulating and fluidized bed heat exchanger device (12);
C, gas converting heat unit 11, this gas converting heat unit contains saturation steam import, high-temperature flue gas import, low temperature feedwater import, superheater section, economizer section, low-temperature flue gas outlet, superheated vapour outlet and hot water outlet; High-temperature flue gas from cyclonic separator 4 is connected with described high-temperature flue gas import by pipeline, and flue gas, is then discharged through low-temperature flue gas outlet successively through superheater section and economizer section in gas converting heat unit 11 inside; Enter described superheater section from slag granulating and the saturation steam of fluidized bed heat exchanger device 12 and the saturation steam of slag particle heat exchange unit 10 from saturation steam import, then exported by superheated vapour and discharge; Low temperature feedwater enters described economizer section through low temperature feedwater import, then discharges through hot water outlet, enters the water wall of slag granulating and fluidized bed heat exchanger device 12 and the water wall of slag particle heat exchange unit 10 respectively by pipeline.
Its specific works process is as follows:
1) 1300 ~ 1600 DEG C of liquid metallurgical cinders enter slag granulating and fluidized bed heat exchanger device 12 by slag funnel 2, and the high-speed jet through high-speed jet granulation apparatus 3 is granulated into the solid impurity particle that mean diameter is less than 10mm;
2) solid impurity particle after granulation passes through water wall and heat exchange pipe laying and hot water heat exchange slag granulating and fluidized bed heat exchanger device 12 in, carry out heat exchange with the cryogenic gas entered from slag granulating and fluidized bed heat exchanger device 12 bottom simultaneously, slag particle heat exchange unit 10 is entered through slag particle handling equipment after solid impurity particle temperature is down to 700 ~ 1000 DEG C, cryogenic gas heats up and becomes 400 ~ 800 DEG C of high-temperature flue gas, after cyclonic separator 4, enter gas converting heat unit 11 by pipeline, after hot water heat absorption becomes saturation steam, entered the superheater section of gas converting heat unit 11 by pipeline;
3) 700 ~ 1000 DEG C of high temperature slag particles in slag particle heat exchange unit 10 through water wall and hot water heat exchange, discharge after high temperature slag particle being cooled further become 100 ~ 300 DEG C of low temperature slag particles, after hot water heat absorption becomes saturation steam, entered the superheater section of gas converting heat unit 11 by pipeline;
4) 400 ~ 800 DEG C of high-temperature flue gas are in gas converting heat unit 11; first in superheater section and the saturation steam heat exchange from slag granulating and fluidized bed heat exchanger device 12 and slag particle heat exchange unit 10; saturation steam is absorbed heat and becomes superheated vapour; then in economizer section and low temperature feedwater heat exchange; enter the water wall of slag granulating and fluidized bed heat exchanger device 12 and slag particle heat exchange unit 10 after making low temperature feedwater heat absorption become hot water respectively, final high-temperature flue gas is cooled becomes 100 ~ 300 DEG C of low-temperature flue gas through low-temperature flue gas outlet discharge.
Fig. 2 is the structural principle schematic diagram of the second metallurgical slag granulation provided by the utility model and heat reclaiming system embodiment thereof, and described system comprises:
A, slag granulating and fluidized bed heat exchanger device 12, it comprises fluidized-bed body 1, slag funnel 2, high-speed jet granulation apparatus 3, cyclonic separator 4 and is arranged in the heat exchange pipe laying 6 of fluidized-bed body lower part, slag-drip opening 7, air distribution plate 8, air compartment 5 and inlet mouth 9; Described fluidized-bed body 1 adopts water wall structure; Described high-speed jet granulation apparatus 3 is arranged in the top of fluidized-bed body; Fluidized-bed body is approximate bucket type wide at the top and narrow at the bottom; Described high-speed jet granulation apparatus next-door neighbour is arranged in below slag funnel; Described air distribution plate is in tilted layout, and horizontal by 0≤a≤30 ° angle;
B, slag particle heat exchange unit 10, this slag particle heat exchange unit is connected with the slag-drip opening 7 bottom slag granulating and fluidized bed heat exchanger device 12 by slag particle handling equipment, this slag particle heat exchange unit internal layout water wall, which is provided with the import of high temperature slag particle, low temperature feedwater import, low temperature slag particle relief outlet and vapour outlet; Low temperature feedwater is discharged by vapour outlet after water wall with the high temperature slag particle heat exchange from slag granulating and fluidized bed heat exchanger device 12;
C, gas converting heat unit 11, this gas converting heat unit contains high-temperature flue gas import, low temperature feedwater import, low-temperature flue gas outlet and vapour outlet; High-temperature flue gas from cyclonic separator 4 is connected with described high-temperature flue gas import by pipeline, then discharges through low-temperature flue gas outlet; Low temperature feedwater enters gas converting heat unit 11 through low temperature feedwater import, then discharges through vapour outlet.
Its specific works process is as follows:
1) 1300 ~ 1600 DEG C of liquid metallurgical cinders enter slag granulating and fluidized bed heat exchanger device 12 by slag funnel 2, and the high-speed jet through high-speed jet granulation apparatus 3 is granulated into the solid impurity particle that mean diameter is less than 10mm;
2) solid impurity particle after granulation passes through water wall and heat exchange pipe laying and low temperature feedwater heat exchange slag granulating and fluidized bed heat exchanger device 12 in, carry out heat exchange with the cryogenic gas entered from slag granulating and fluidized bed heat exchanger device 12 bottom simultaneously, slag particle heat exchange unit 10 is entered through slag particle handling equipment after solid impurity particle temperature is down to 700 ~ 1000 DEG C, cryogenic gas intensification becomes 400 ~ 800 DEG C of high-temperature flue gas and enters gas converting heat unit 11 through cyclonic separator 4 by pipeline, discharges after low temperature feedwater heat absorption becomes steam;
3) 700 ~ 1000 DEG C of high temperature slag particles are through water wall and low temperature feedwater heat exchange in slag particle heat exchange unit 10, and discharge after high temperature slag particle being cooled further become 100 ~ 300 DEG C of low temperature slag particles, low temperature feedwater heat absorption becomes steam and discharges;
4) 400 ~ 800 DEG C of high-temperature flue gas in gas converting heat unit 11 with low temperature feedwater heat exchange, high-temperature flue gas be cooled become 100 ~ 300 DEG C low-temperature flue gas after discharge, low temperature feedwater heat absorption becomes steam and discharges.
Fig. 3 is the structural principle schematic diagram of the third metallurgical slag granulation provided by the utility model and heat reclaiming system embodiment thereof, and described system comprises:
A, slag granulating and fluidized bed heat exchanger device 12, it comprises fluidized-bed body 1, slag funnel 2, high-speed jet granulation apparatus 3, cyclonic separator 4 and is arranged in the heat exchange pipe laying 6 of fluidized-bed body lower part, slag-drip opening 7, air distribution plate 8, air compartment 5 and inlet mouth 9; Described fluidized-bed body 1 adopts water wall structure; Described high-speed jet granulation apparatus 3 is arranged in the top of fluidized-bed body; Fluidized-bed body is approximate bucket type wide at the top and narrow at the bottom; Described high-speed jet granulation apparatus next-door neighbour is arranged in below slag funnel; Described air distribution plate is in tilted layout, and horizontal by 0≤a≤30 ° angle.
B, slag particle heat exchange unit 10, this slag particle heat exchange unit is connected with the slag-drip opening 7 bottom slag granulating and fluidized bed heat exchanger device 12 by slag particle handling equipment, this slag particle heat exchange unit internal layout water wall, which is provided with the import of high temperature slag particle, hot water inlet, cryogenic gas import, low temperature slag particle relief outlet, saturation steam outlet and high-temperature flue gas outlet; Hot water is discharged with from export by saturation steam after the high temperature slag particle heat exchange of slag granulating and fluidized bed heat exchanger device 12 through water wall, while cryogenic gas and the heat exchange of high temperature slag particle after to export through high-temperature flue gas and discharge;
C, gas converting heat unit 11, this gas converting heat unit contains saturation steam import, high-temperature flue gas import, low temperature feedwater import, superheater section, economizer section, low-temperature flue gas outlet, superheated vapour outlet and hot water outlet; High-temperature flue gas from cyclonic separator 4 is connected with described high-temperature flue gas import by pipeline with the high-temperature flue gas from slag particle heat exchange unit 10, flue gas, is then discharged through low-temperature flue gas outlet successively through superheater section and economizer section in gas converting heat unit 11 inside; Enter described superheater section from slag granulating and the saturation steam of fluidized bed heat exchanger device 12 and the saturation steam of slag particle heat exchange unit 10 from saturation steam import, then exported by superheated vapour and discharge; Low temperature feedwater enters described economizer section through low temperature feedwater import, then discharges through hot water outlet, enters the water wall of slag granulating and fluidized bed heat exchanger device 12 and the water wall of slag particle heat exchange unit 10 respectively by pipeline.
Its specific works process is as follows:
1) 1300 ~ 1600 DEG C of liquid metallurgical cinders enter slag granulating and fluidized bed heat exchanger device 12 by slag funnel 2, and the high-speed jet through high-speed jet granulation apparatus 3 is granulated into the solid impurity particle that mean diameter is less than 10mm;
2) solid impurity particle after granulation passes through water wall and heat exchange pipe laying and hot water heat exchange slag granulating and fluidized bed heat exchanger device 12 in, carry out heat exchange with the cryogenic gas entered from slag granulating and fluidized bed heat exchanger device 12 bottom simultaneously, slag particle heat exchange unit 10 is entered through slag particle handling equipment after solid impurity particle temperature is down to 700 ~ 1000 DEG C, cryogenic gas intensification becomes 400 ~ 800 DEG C of high-temperature flue gas and enter gas converting heat unit 11 by pipeline after cyclonic separator 4, is entered the superheater section of gas converting heat unit 11 after hot water heat absorption becomes saturation steam by pipeline;
3) 700 ~ 1000 DEG C of high temperature slag particles in slag particle heat exchange unit 10 through water wall and hot water heat exchange, simultaneously with the cryogenic gas heat exchange entered by slag particle heat exchange unit (10) bottom; High temperature slag particle is discharged after being further cooled and becoming 100 ~ 300 DEG C of low temperature slag particles, enter the superheater section of gas converting heat unit 11 after hot water heat absorption becomes saturation steam, cryogenic gas enters gas converting heat unit by pipeline after heating up and becoming 400 ~ 800 DEG C of high-temperature flue gas;
4) 400 ~ 800 DEG C of high-temperature flue gas are in gas converting heat unit; first in superheater section and the saturation steam heat exchange from slag granulating and fluidized bed heat exchanger device 12 and slag particle heat exchange unit 10; saturation steam is absorbed heat and becomes superheated vapour; then flue gas is in economizer section and low temperature feedwater heat exchange; enter slag granulating and fluidized bed heat exchanger device 12 and slag particle heat exchange unit 10 respectively after low temperature feedwater being absorbed heat become hot water) water wall, final high-temperature flue gas is cooled to be become 100 ~ 300 DEG C of low-temperature flue gas and discharges through low-temperature flue gas outlet.
Fig. 4 is the structural principle schematic diagram of the 4th kind of metallurgical slag granulation provided by the utility model and heat reclaiming system embodiment thereof, and described system comprises:
A, slag granulating and fluidized bed heat exchanger device 12, it comprises fluidized-bed body 1, slag funnel 2, high-speed jet granulation apparatus 3, cyclonic separator 4 and is arranged in the heat exchange pipe laying 6 of fluidized-bed body lower part, slag-drip opening 7, air distribution plate 8, air compartment 5 and inlet mouth 9; Described fluidized-bed body adopts water wall structure; Described high-speed jet granulation apparatus 3 is arranged in the top of fluidized-bed body; Fluidized-bed body is approximate bucket type wide at the top and narrow at the bottom; Described high-speed jet granulation apparatus next-door neighbour is arranged in below slag funnel; Described air distribution plate is in tilted layout, and horizontal by 0≤a≤30 ° angle.
B, slag particle heat exchange unit 10, this slag particle heat exchange unit is connected with the slag-drip opening 7 bottom slag granulating and fluidized bed heat exchanger device 12 by slag particle handling equipment, this slag particle heat exchange unit internal layout water wall, which is provided with the import of high temperature slag particle, low temperature feedwater import, cryogenic gas import, low temperature slag particle relief outlet, vapour outlet and high-temperature flue gas outlet; Low temperature feedwater is discharged by vapour outlet with from after the high temperature slag particle heat exchange of slag granulating and fluidized bed heat exchanger device 12 through water wall, exports simultaneously discharge after cryogenic gas and the heat exchange of high temperature slag particle through high-temperature flue gas;
C, gas converting heat unit 11, this gas converting heat unit contains high-temperature flue gas import, low temperature feedwater import, low-temperature flue gas outlet and vapour outlet; High-temperature flue gas from cyclonic separator 4 is connected with described high-temperature flue gas import by pipeline with the high-temperature flue gas from slag particle heat exchange unit 10, then discharges through low-temperature flue gas outlet; Low temperature feedwater enters gas converting heat unit 11 through low temperature feedwater import, then discharges through vapour outlet.
Its specific works process is as follows:
1) 1300 ~ 1600 DEG C of liquid metallurgical cinders enter slag granulating and fluidized bed heat exchanger device 12 by slag funnel 2, and the high-speed jet through high-speed jet granulation apparatus 3 is granulated into the solid impurity particle that mean diameter is less than 10mm;
2) solid impurity particle after granulation passes through water wall and heat exchange pipe laying and low temperature feedwater heat exchange slag granulating and fluidized bed heat exchanger device 12 in, carry out heat exchange with the cryogenic gas entered from slag granulating and fluidized bed heat exchanger device 12 bottom simultaneously, slag particle heat exchange unit 10 is entered through slag particle handling equipment after solid impurity particle temperature is down to 700 ~ 1000 DEG C, cryogenic gas intensification becomes 400 ~ 800 DEG C of high-temperature flue gas and enters gas converting heat unit 11 through cyclonic separator 4 by pipeline, discharges after low temperature feedwater heat absorption becomes steam;
3) 700 ~ 1000 DEG C of high temperature slag particles in slag particle heat exchange unit 10 through water wall and low temperature feedwater heat exchange, simultaneously with the cryogenic gas heat exchange by entering bottom slag particle heat exchange unit 10; High temperature slag particle is discharged after being further cooled and becoming 100 ~ 300 DEG C of low temperature slag particles, and cryogenic gas enters gas converting heat unit 11 by pipeline after heating up and becoming 400 ~ 800 DEG C of high-temperature flue gas, and low temperature feedwater heat absorption becomes steam and discharges;
4) 400 ~ 800 DEG C of high-temperature flue gas in gas converting heat unit 11 with low temperature feedwater heat exchange, high-temperature flue gas be cooled become 100 ~ 300 DEG C low-temperature flue gas after discharge, low temperature feedwater heat absorption becomes steam and discharges.
Claims (6)
1. metallurgical slag granulation and a heat reclaiming system thereof, is characterized in that, described system comprises:
A, slag granulating and fluidized bed heat exchanger device (12), it comprises fluidized-bed body (1), slag funnel (2), high-speed jet granulation apparatus (3), cyclonic separator (4) and is arranged in the heat exchange pipe laying (6) of fluidized-bed body lower part, slag-drip opening (7), air distribution plate (8), air compartment (5) and inlet mouth (9); Described fluidized-bed body (1) adopts water wall structure; Described high-speed jet granulation apparatus (3) is arranged in the top of fluidized-bed body;
B, slag particle heat exchange unit (10), this slag particle heat exchange unit is connected by the slag-drip opening (7) of slag particle handling equipment with slag granulating and fluidized bed heat exchanger device (12) bottom, this slag particle heat exchange unit internal layout water wall, which is provided with the import of high temperature slag particle, hot water inlet, low temperature slag particle relief outlet and saturation steam outlet; Hot water is exported by saturation steam and discharges after water wall with the high temperature slag particle heat exchange from slag granulating and fluidized bed heat exchanger device (12);
C, gas converting heat unit (11), this gas converting heat unit contains saturation steam import, high-temperature flue gas import, low temperature feedwater import, superheater section, economizer section, low-temperature flue gas outlet, superheated vapour outlet and hot water outlet; High-temperature flue gas from cyclonic separator (4) is connected with described high-temperature flue gas import by pipeline, and flue gas, is then discharged through low-temperature flue gas outlet successively through superheater section and economizer section in gas converting heat unit (11) inside; Enter described superheater section from slag granulating and the saturation steam of fluidized bed heat exchanger device (12) and the saturation steam of slag particle heat exchange unit (10) from saturation steam import, then exported by superheated vapour and discharge; Low temperature feedwater enters described economizer section through low temperature feedwater import; then discharge through hot water outlet, enter the water wall of slag granulating and fluidized bed heat exchanger device (12) and the water wall of slag particle heat exchange unit (10) respectively by pipeline.
2. metallurgical slag granulation and a heat reclaiming system thereof, is characterized in that, described system comprises:
A, slag granulating and fluidized bed heat exchanger device (12), it comprises fluidized-bed body (1), slag funnel (2), high-speed jet granulation apparatus (3), cyclonic separator (4) and is arranged in the heat exchange pipe laying (6) of fluidized-bed body lower part, slag-drip opening (7), air distribution plate (8), air compartment (5) and inlet mouth (9); Described fluidized-bed body (1) adopts water wall structure; Described high-speed jet granulation apparatus (3) is arranged in the top of fluidized-bed body;
B, slag particle heat exchange unit (10), this slag particle heat exchange unit is connected by the slag-drip opening (7) of slag particle handling equipment with slag granulating and fluidized bed heat exchanger device (12) bottom, this slag particle heat exchange unit internal layout water wall, which is provided with the import of high temperature slag particle, low temperature feedwater import, low temperature slag particle relief outlet and vapour outlet; Low temperature feedwater is discharged by vapour outlet after water wall with the high temperature slag particle heat exchange from slag granulating and fluidized bed heat exchanger device (12);
C, gas converting heat unit (11), this gas converting heat unit contains high-temperature flue gas import, low temperature feedwater import, low-temperature flue gas outlet and vapour outlet; High-temperature flue gas from cyclonic separator (4) is connected with described high-temperature flue gas import by pipeline, then discharges through low-temperature flue gas outlet; Low temperature feedwater enters gas converting heat unit (11) through low temperature feedwater import, then discharges through vapour outlet.
3. metallurgical slag granulation and a heat reclaiming system thereof, is characterized in that, described system comprises:
A, slag granulating and fluidized bed heat exchanger device (12), it comprises fluidized-bed body (1), slag funnel (2), high-speed jet granulation apparatus (3), cyclonic separator (4) and is arranged in the heat exchange pipe laying (6) of fluidized-bed body lower part, slag-drip opening (7), air distribution plate (8), air compartment (5) and inlet mouth (9); Described fluidized-bed body (1) adopts water wall structure; Described high-speed jet granulation apparatus (3) is arranged in the top of fluidized-bed body;
B, slag particle heat exchange unit (10), this slag particle heat exchange unit is connected by the slag-drip opening (7) of slag particle handling equipment with slag granulating and fluidized bed heat exchanger device (12) bottom, this slag particle heat exchange unit internal layout water wall, which is provided with the import of high temperature slag particle, hot water inlet, cryogenic gas import, low temperature slag particle relief outlet, saturation steam outlet and high-temperature flue gas outlet; Hot water is discharged with from export by saturation steam after the high temperature slag particle heat exchange of slag granulating and fluidized bed heat exchanger device (12) through water wall, while cryogenic gas and the heat exchange of high temperature slag particle after to export through high-temperature flue gas and discharge;
C, gas converting heat unit (11), this gas converting heat unit contains saturation steam import, high-temperature flue gas import, low temperature feedwater import, superheater section, economizer section, low-temperature flue gas outlet, superheated vapour outlet and hot water outlet; High-temperature flue gas from cyclonic separator (4) is connected with described high-temperature flue gas import by pipeline with the high-temperature flue gas from slag particle heat exchange unit (10), flue gas, is then discharged through low-temperature flue gas outlet successively through superheater section and economizer section in gas converting heat unit (11) inside; Enter described superheater section from slag granulating and the saturation steam of fluidized bed heat exchanger device (12) and the saturation steam of slag particle heat exchange unit (10) from saturation steam import, then exported by superheated vapour and discharge; Low temperature feedwater enters described economizer section through low temperature feedwater import, then discharges through hot water outlet, enters the water wall of slag granulating and fluidized bed heat exchanger device (12) and the water wall of slag particle heat exchange unit (10) respectively by pipeline.
4. metallurgical slag granulation and a heat reclaiming system thereof, is characterized in that, described system comprises:
A, slag granulating and fluidized bed heat exchanger device (12), it comprises fluidized-bed body (1), slag funnel (2), high-speed jet granulation apparatus (3), cyclonic separator (4) and is arranged in the heat exchange pipe laying (6) of fluidized-bed body lower part, slag-drip opening (7), air distribution plate (8), air compartment (5) and inlet mouth (9); Described fluidized-bed body (1) adopts water wall structure; Described high-speed jet granulation apparatus (3) is arranged in the top of fluidized-bed body;
B, slag particle heat exchange unit (10), this slag particle heat exchange unit is connected by the slag-drip opening (7) of slag particle handling equipment with slag granulating and fluidized bed heat exchanger device (12) bottom, this slag particle heat exchange unit internal layout water wall, which is provided with the import of high temperature slag particle, low temperature feedwater import, cryogenic gas import, low temperature slag particle relief outlet, vapour outlet and high-temperature flue gas outlet; Low temperature feedwater is discharged by vapour outlet with from after the high temperature slag particle heat exchange of slag granulating and fluidized bed heat exchanger device (12) through water wall, exports simultaneously discharge after cryogenic gas and the heat exchange of high temperature slag particle through high-temperature flue gas;
C, gas converting heat unit (11), this gas converting heat unit contains high-temperature flue gas import, low temperature feedwater import, low-temperature flue gas outlet and vapour outlet; High-temperature flue gas from cyclonic separator (4) is connected with described high-temperature flue gas import by pipeline with the high-temperature flue gas from slag particle heat exchange unit (10), then discharges through low-temperature flue gas outlet; Low temperature feedwater enters gas converting heat unit (11) through low temperature feedwater import, then discharges through vapour outlet.
5. a kind of metallurgical slag granulation according to claim 1,2,3 or 4 and heat reclaiming system thereof, is characterized in that, described fluidized-bed body (1) is in approximate bucket type wide at the top and narrow at the bottom; Described high-speed jet granulation apparatus (3) adopts next-door neighbour to be arranged in below slag funnel (2).
6. a kind of metallurgical slag granulation according to claim 1,2,3 or 4 and heat reclaiming system thereof, is characterized in that, described air distribution plate (8) is in tilted layout, and horizontal by 0≤a≤30 ° angle.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104388609A (en) * | 2014-11-20 | 2015-03-04 | 清华大学 | System and method for granulating metallurgical slag and recovering thermal energy of metallurgical slag |
| CN105277004A (en) * | 2015-11-25 | 2016-01-27 | 南京圣诺热管有限公司 | Device and method for waste heat recovery of high-temperature molten slag by means of two-step method |
| CN106823774A (en) * | 2017-02-14 | 2017-06-13 | 河钢股份有限公司 | A kind of utilization blast furnace slag fixes carbon dioxide and the apparatus and method for reclaiming sensible heat |
| CN108342528A (en) * | 2017-09-27 | 2018-07-31 | 中能立化科技有限公司 | A kind of conveying of slag and heat-exchange system |
| CN109595947A (en) * | 2019-01-17 | 2019-04-09 | 苏州良造能源科技有限公司 | A kind of industrial slags cement sensible heat recovery system and its recovery method |
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2014
- 2014-11-20 CN CN201420703161.2U patent/CN204265776U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104388609A (en) * | 2014-11-20 | 2015-03-04 | 清华大学 | System and method for granulating metallurgical slag and recovering thermal energy of metallurgical slag |
| CN105277004A (en) * | 2015-11-25 | 2016-01-27 | 南京圣诺热管有限公司 | Device and method for waste heat recovery of high-temperature molten slag by means of two-step method |
| CN106823774A (en) * | 2017-02-14 | 2017-06-13 | 河钢股份有限公司 | A kind of utilization blast furnace slag fixes carbon dioxide and the apparatus and method for reclaiming sensible heat |
| CN106823774B (en) * | 2017-02-14 | 2023-03-21 | 河钢股份有限公司 | Device and method for fixing carbon dioxide and recovering sensible heat by using blast furnace slag |
| CN108342528A (en) * | 2017-09-27 | 2018-07-31 | 中能立化科技有限公司 | A kind of conveying of slag and heat-exchange system |
| CN109595947A (en) * | 2019-01-17 | 2019-04-09 | 苏州良造能源科技有限公司 | A kind of industrial slags cement sensible heat recovery system and its recovery method |
| CN109595947B (en) * | 2019-01-17 | 2023-10-03 | 苏州良造能源科技有限公司 | Industrial slag sensible heat recovery system and recovery method thereof |
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