CN110117164A - A kind of device and method of pair of fusion smelting slag glass granulation and waste heat recycling - Google Patents
A kind of device and method of pair of fusion smelting slag glass granulation and waste heat recycling Download PDFInfo
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- CN110117164A CN110117164A CN201910399338.1A CN201910399338A CN110117164A CN 110117164 A CN110117164 A CN 110117164A CN 201910399338 A CN201910399338 A CN 201910399338A CN 110117164 A CN110117164 A CN 110117164A
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- 239000002893 slag Substances 0.000 title claims abstract description 92
- 238000005469 granulation Methods 0.000 title claims abstract description 68
- 230000003179 granulation Effects 0.000 title claims abstract description 68
- 239000011521 glass Substances 0.000 title claims abstract description 64
- 238000003723 Smelting Methods 0.000 title claims abstract description 53
- 230000004927 fusion Effects 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000002918 waste heat Substances 0.000 title claims abstract description 18
- 238000004064 recycling Methods 0.000 title claims abstract description 14
- 238000007599 discharging Methods 0.000 claims abstract description 39
- 210000000038 chest Anatomy 0.000 claims abstract description 38
- 238000001816 cooling Methods 0.000 claims abstract description 37
- 238000010079 rubber tapping Methods 0.000 claims abstract description 18
- 238000000746 purification Methods 0.000 claims abstract description 16
- 230000008569 process Effects 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims description 11
- 239000012774 insulation material Substances 0.000 claims description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 7
- 239000003546 flue gas Substances 0.000 claims description 7
- 239000013589 supplement Substances 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 6
- 239000003517 fume Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims 1
- 239000004744 fabric Substances 0.000 claims 1
- 230000001939 inductive effect Effects 0.000 claims 1
- 230000009466 transformation Effects 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 5
- 239000002245 particle Substances 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 description 9
- 239000000047 product Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000004017 vitrification Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/10—Forming beads
- C03B19/1005—Forming solid beads
- C03B19/102—Forming solid beads by blowing a gas onto a stream of molten glass or onto particulate materials, e.g. pulverising
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B5/00—Treatment of metallurgical slag ; Artificial stone from molten metallurgical slag
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical slag
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/04—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being hot slag, hot residues, or heated blocks, e.g. iron blocks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D1/00—Devices using naturally cold air or cold water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
-
- 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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Combustion & Propulsion (AREA)
- Furnace Details (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The present invention relates to the device and methods of a kind of pair of fusion smelting slag glass granulation and waste heat recycling, comprising: chute (1), tundish (2), diversion trench (3), it is granulated thorax (4), it is granulated blower (5), air blast slot (6), pipe heat exchanger (8), cooling blower (9), spiral discharging device (10), elevator, preferably bucket elevator (11), finished bin (12), plate heat exchanger (14), first steam pipe (15), second steam pipe (15), generating set (16) and purification tapping equipment.Fusion smelting slag is converted to glassy particles by device and is conducive to resource utilization, waste heat recycling is carried out simultaneously, realize the maximization recycling of fusion smelting slag resource, realize fusion smelting slag high efficiency, equipmentization, automation, innoxious, recycling treatment, the realization minimum discharge for the treatment of process has technique outstanding and environment-friendly advantage.
Description
Technical field
The present invention relates to a kind of fusion smelting slag glass granulation and waste-heat recovery device and method, especially a kind of high-temperature liquids
State metallurgical slag Efficient Conversion be granulated at vitreum while the device and method of recovery waste heat.
Background technique
China is industrial power, and the high temperature such as steel, coloured smelting enterprise is numerous, and major metal yield is about the whole world substantially
50% or more.A large amount of pyrolytic semlting slags are produced with a large amount of Metal Productions, such as blast-furnace cinder, steel slag, copper ashes, nickel slag are large
Fusion smelting slag.Current China metallurgical slag resource utilization rate is low, and resource utilization rate still has a large amount of debris dumps less than half
It abandons, occupies a large amount of soils, there are great Environmental security hidden danger.
Often contain a large amount of inorganic material in metallurgical slag, there is building material product to prepare potentiality, current domestic and international metallurgical slag
Often simple water quenching, hot application or slow cooling processing, often price is cheap or directly sends outside, resource utilization for treated metallurgical slag
It is horizontal to be improved.For metallurgical slag tapping temperature often at 1300 DEG C or more, ton slag calorific value is often not less than 40 kilograms of mark coals, has
High thermal resource recovery value.But fusion smelting slag residual heat resources waste in existing treatment process, can not effectively recycle,
It is great recycling waste.China's metallurgical slag year yield at 500,000,000 tons or more, if realize slag thermal resource all of will produce
Raw huge economy and environmental benefit, meaning are very great.
Metallurgical slag, which is carried out vitrifying, has many advantages, is conducive to innoxious, the resource utilization of metallurgical slag.One side
Face, which quickly cools down vitrifying slag is prevented to be changed into crystal structure, to lead to the reduction of its gelation activity, while avoiding crystal structure hard
Degree height is unfavorable for grinding and prepares powder body material applied to cement or concrete admixture.Vitrifying considerably reduces in metallurgical slag
Toxic heavy metal element ionic constituents content has the effect of heavy metal element solidification and stabilization, it is expected to realize the nothing of metallurgical slag
Evilization processing.It summarizes it is found that the During Vitrification in vitro of metallurgical slag is particularly significant, the resource utilization of metallurgical slag is played and is extremely closed
The effect of key.
Summary of the invention
In order to solve the defects of prior art, the present invention recycles integrated device using glass granulation, waste heat, will melt
Metallurgical slag is converted to the particle of glassy state, while carrying out waste heat recycling, realizes the maximization recycling of fusion smelting slag resource.This hair
It is bright that fusion smelting slag high efficiency, equipmentization, automation, innoxious, recycling treatment, processing are realized under conditions of relatively inexpensive
The ultra-clean discharge of the realization of process has technique outstanding and environment-friendly advantage, and significant push is smelted residues processing technique technology
Metallurgical slag zero-emission is realized in progress early.
The present invention relates to the devices of a kind of pair of fusion smelting slag glass granulation and waste heat recycling comprising: chute, centre
Packet, diversion trench, granulation thorax, granulation blower, air blast slot, pipe heat exchanger, cooling blower, spiral discharging device, elevator, preferably
Bucket elevator, finished bin, plate heat exchanger, the first steam pipe, the second steam pipe, generating set and purification tapping equipment；It slips
Slot connects tundish, and for flowing into tundish fusion smelting slag through chute, tundish connects granulation thorax through diversion trench, is used for
Fusion smelting slag in tundish to be wandered in granulation thorax through diversion trench, granulation thorax is connected with granulation blower by air blast slot,
It is bloated for the cold wind that blower generates will to be granulated by air blast slot, chilling is carried out to turn with the fusion smelting slag flowed out to diversion trench
Become glass dregs, be provided with pipe heat exchanger below granulation thorax, so that the glass dregs of high temperature fall into pipe heat exchanger and carry out hot friendship
It changes；It is provided with spiral discharging device below pipe heat exchanger, for the glass dregs after heat exchange to be sent to spiral discharging device；Spiral
The boosted machine of discharger connects finished bin, for being promoted the glass dregs in spiral discharging device into finished bin；Cooling blower is logical
The first air hose is crossed to be connected between pipe heat exchanger and spiral discharging device；Cold wind for generating cooling blower is from pipe type heat transfer
It is blasted between device and spiral discharging device and supplement cooling is carried out to the glass dregs of high temperature；The upper end for being granulated thorax passes through the second air hose
Connecting plate type heat exchanger, the cold wind blasted through granulation blower and cooling blower obtain hot wind, hot wind is through the second wind after heat exchange
Pipe is delivered to plate heat exchanger；Plate heat exchanger passes through first by third air hose connection purification tapping equipment, plate heat exchanger
Steam pipe connects generating set, and pipe heat exchanger connects generating set, pipe heat exchanger and plate-type heat-exchange by the second steam pipe
Device generates steam through heat exchange, and steam is delivered to generating set by the first and second steam pipes and generates electricity.
Wherein, purification tapping equipment includes bag filter, air-introduced machine and chimney, and plate heat exchanger is connected by third air hose
The arrival end of bag filter is connect, the outlet end of bag filter connects chimney by air-introduced machine, after plate heat exchanger exchanges heat
Flue gas be delivered to sack cleaner through third air hose, through chimney outlet under the action of air-introduced machine.
Wherein, flame-proof thermal insulation material is respectively provided with inside the chute, tundish, diversion trench and granulation thorax.
Wherein, the diversion trench is exported with slender type, and slender type outlet length-width ratio is not less than 10, to guarantee to melt
Metallurgical slag flows into granulation thorax in liquid level shape.
Wherein, the air blast slot outlet is arranged in immediately below the slender type outlet of diversion trench；The outlet of air blast slot is provided with out
Stomata, guarantees air blast even flow field, and air blast slot and water conservancy diversion slot length are corresponding in order to fusion smelting slag glass granulation.
Wherein, thermal insulation material is provided with outside first, second, and third air hose to carry out external thermal insulation, first and second
Thermal insulation material is provided with outside steam pipe to carry out external thermal insulation.
Wherein, described device further includes central control system, central control system and tundish, granulation blower, pipe heat exchanger, cooling
Blower, spiral discharging device, elevator, finished bin, the air hose, plate heat exchanger, the steam pipe, generating set, pocket type remove
Dirt device is connected with air-introduced machine；Central control system is for controlling tundish liquid level；Central control system be used for granulation blower,
Pipe heat exchanger, cooling blower, spiral discharging device, elevator, plate heat exchanger, generating set, sack cleaner and air-introduced machine
Carry out switch control and parameter regulation control；Central control system is for controlling the discharging of finished bin；Central control system be used for and
The aperture of the air hose and the steam pipe is adjusted.
The invention further relates to a kind of method being granulated using above-mentioned device to fusion smelting slag glass and waste heat recycles, packets
Include following steps:
(1) fusion smelting slag uniformly flows into tundish through chute, and then falls into granulation thorax through diversion trench uniform flow, excellent
It selects in treatment process and thorax is granulated to guarantee that metallurgical slag flows stable inflow by the liquid level of control tundish；
(2) starting granulation blower will be granulated the cold wind that blower generates and uniformly be bloated by air blast slot and flows out smelting to diversion trench
It refines slag and carries out chilling, fusion smelting slag temperature is quickly reduced to 800 DEG C or less；Fusion smelting slag chilling is changed into glass dregs,
It is preferred that the grain diameter of glass dregs is within 15mm；
(3) glass dregs of high temperature fall into pipe heat exchanger and carry out heat exchange, at the same cooling blower by cold wind from pipe type heat transfer
It is blasted between device and spiral discharging device and supplement cooling is carried out to high temp glass slag；
(4) glass dregs cool to 100 DEG C or less and discharge through spiral discharging device, are promoted glass dregs to finished product using elevator
Storehouse is stored；
(5) cold wind blasted through granulation blower and cooling blower obtains 400 DEG C or more hot winds, hot wind warp after heat exchange
First air hose is delivered to plate heat exchanger；By generating steam after pipe heat exchanger and plate heat exchanger heat exchange, pressure is steamed
Vapour is delivered to generating set by the first and second steam pipes and generates electricity；
(6) flue-gas temperature after plate heat exchanger exchanges heat is down to 200 DEG C hereinafter, by the connection purification discharge of third air hose
Device is to carry out outlet；It is preferred that the sack cleaner of purification tapping equipment is delivered to by third air hose, in purification tapping equipment
Air-introduced machine under the action of purified tapping equipment chimney outlet.
Wherein, above-mentioned steps are controlled by central control system progress off-line operation.
Wherein, vitreum content reaches 95% or more to fusion smelting slag in obtained glass dregs after processing.It is preferred that final
Transport to the glass dregs temperature in finished bin is no more than 80 DEG C.Ton slag generated energy is super after treatment by using the treatment method for preferred molten metallurgical slag
It crosses
25kWh.It is preferred that discharged gas fume concentration is lower than 10mg/m after this method processing3
Technical scheme is as follows:
A kind of fusion smelting slag glass granulation and waste-heat recovery device comprising: chute, tundish, diversion trench, granulation
Thorax is granulated blower, air blast slot, glass dregs, pipe heat exchanger, cooling blower, spiral discharging device, bucket elevator, finished bin, wind
Pipe, plate heat exchanger, steam pipe, generating set, sack cleaner, air-introduced machine, chimney and central control system；Chute connection is intermediate
Packet, tundish connect granulation thorax through diversion trench；Granulation thorax is connected with granulation blower through air blast slot；Being granulated is pipe type heat transfer below thorax
Device, pipe heat exchanger and cooling blower are connected through air hose；It is spiral discharging device below pipe heat exchanger；Spiral discharging device is through bucket type
Elevator connects finished bin；Granulation thorax, plate heat exchanger, bag filter, air-introduced machine and chimney are connected through air hose；Pipe type heat transfer
Device, plate heat exchanger and generating set are connected through steam pipe.
The invention further relates to the methods of a kind of pair of fusion smelting slag glass granulation and waste heat recovery processing, including walk as follows
It is rapid:
(1) fusion smelting slag uniformly flows into tundish through chute, and then falls into granulation thorax through diversion trench uniform flow, place
Reason process ensures that tundish controls certain liquid level to guarantee that metallurgical slag flows into granulation thorax stability of flow.
(2) cold wind is uniformly bloated by air blast slot and flows out metallurgical slag progress chilling to diversion trench, fastly by starting granulation blower
Fusion smelting slag temperature is reduced to 800 DEG C or less by speed；Fusion smelting slag chilling is changed into glass dregs, and glass dregs grain diameter exists
Within 15mm.
(3) glass dregs of high temperature fall into pipe heat exchanger and carry out heat exchange, at the same cooling blower by cold wind from pipe type heat transfer
It is blasted between device and spiral discharging device and supplement cooling is carried out to high temp glass slag.
(4) glass dregs cool to 100 DEG C or less and discharge through spiral discharging device, are arrived glass dregs promotion using bucket elevator
Finished bin storage is outer to sell.
(5) cold wind blasted through granulation blower and cooling blower obtains 400 DEG C or more hot winds, heat after above-mentioned heat exchange
Wind is delivered to plate heat exchanger through air hose；A large amount of steams, steam are generated through heat exchange through pipe heat exchanger and plate heat exchanger
Generating set is delivered to by steam pipe to generate electricity.
(6) flue-gas temperature after plate heat exchanger exchanges heat is down to 200 DEG C hereinafter, be delivered to sack cleaner through air hose,
Through chimney outlet under the action of air-introduced machine.
The invention has the advantages that realizing fusion smelting slag glass granulation and waste heat recovery processing, technique mistake on device and in method
Journey is simple, equipmentization high degree of automation, and system process cycle is short, and economic cost is reasonable, and treatment process meets minimum discharge and wants
It asks.By metallurgical slag gelling property, the excellent in stability after the process, the recycling of solid waste, innoxious place can be realized
Reason, while realizing the effective recycling of the hot two kinds of resources of slag.
Detailed description of the invention
Fig. 1 is fusion smelting slag glass granulation and waste heat recovery processing schematic device.
Fig. 2 is tundish, diversion trench and air blast groove location relation schematic diagram.
Specific embodiment
A kind of pair of fusion smelting slag glass granulation and waste heat recovery processing device are as shown in Fig. 1 comprising: chute 1, in
Between packet 2, diversion trench 3, granulation thorax 4, granulation blower 5, air blast slot 6, pipe heat exchanger 8, cooling blower 9, spiral discharging device 10, mention
The machine of liter, preferably bucket elevator 11, finished bin 12, plate heat exchanger 14, the first steam pipe 15, the second steam pipe 15, power generation
Unit 16 and purification tapping equipment；Chute 1 connects tundish 2, for fusion smelting slag to be flowed into tundish 2 through chute 1, in
Between packet 2 through diversion trench 3 connect granulation thorax 4, for wandering the fusion smelting slag in tundish 2 through diversion trench 3 into granulation thorax 4
Interior, granulation thorax 4 and granulation blower 5 are connected by air blast slot 6, pass through the drum of air blast slot 6 for that will be granulated the cold wind that blower 5 generates
Out, chilling is carried out with the fusion smelting slag flowed out to diversion trench 3 to be transformed into glass dregs 7, is provided with tubular type below granulation thorax 4 and changes
Hot device 8, so that the glass dregs 7 of high temperature fall into pipe heat exchanger 8 and carry out heat exchange；Spiral is provided with below pipe heat exchanger 8 to go out
Glassware 10, for the glass dregs 7 after heat exchange to be sent to spiral discharging device 10；The boosted machine 11 of spiral discharging device 10 connects into
Product storehouse 12, for being promoted the glass dregs 7 in spiral discharging device 10 into finished bin 12；Cooling blower 9 is connected by the first air hose
It connects between pipe heat exchanger 8 and spiral discharging device 10；Cold wind for generating cooling blower 9 is from pipe heat exchanger 8 and spiral shell
It screws out to blast between glassware 10 and supplement cooling is carried out to the glass dregs of high temperature；The upper end for being granulated thorax 4 passes through the second air hose 13
Connecting plate type heat exchanger 14 obtains hot wind through granulation blower 5 and the cold wind that blasts of cooling blower 9 after heat exchange, and hot wind is through the
Two air hoses 13 are delivered to plate heat exchanger 14；Plate heat exchanger 14 is board-like to change by the connection purification tapping equipment of third air hose 13
Hot device 14 connects generating set 16 by the first steam pipe 15, and pipe heat exchanger 8 connects generating set by the second steam pipe 15
16, through heat exchange generation steam, steam passes through the first and second steam pipes 15 for pipe heat exchanger 8 and plate heat exchanger 14
Generating set 16 is delivered to generate electricity.Purification tapping equipment includes bag filter 17, air-introduced machine 18 and chimney 19, board-like to change
Hot device 14 connects the arrival end of bag filter 17 by third air hose 13, and the outlet end of bag filter 17 passes through air-introduced machine 18
Chimney 19 is connected, the flue gas after the heat exchange of plate heat exchanger 14 is delivered to sack cleaner 17 through third air hose 13, in air-introduced machine
Through 19 outlet of chimney under the action of 18.
Wherein, flame-proof thermal insulation material is respectively provided with inside the chute 1, tundish 2, diversion trench 3 and granulation thorax 4.State first,
Second and third air hose 13 outside be provided with thermal insulation material to carry out external thermal insulation, be provided with guarantor outside the first and second steam pipes 15
Adiabator is to carry out external thermal insulation.
As shown in Fig. 2, the diversion trench 3 is exported with slender type, slender type outlet length-width ratio is not less than 10, to protect
It demonstrate,proves fusion smelting slag and flows into granulation thorax 4 in liquid level shape.The air blast slot 6, which exports, to be arranged under the slender type outlet just of diversion trench 3
Side；The outlet of air blast slot 6 is provided with venthole, guarantees air blast even flow field, air blast slot 6 and 3 length of diversion trench it is corresponding in order to
Fusion smelting slag glass granulation.
Wherein, central control system 20 and tundish 2 are granulated blower 5, pipe heat exchanger 8, cooling blower 9, spiral discharging device
10, bucket elevator 11, finished bin 12, air hose 13, plate heat exchanger 14, steam pipe 15, generating set 16, sack cleaner
17, air-introduced machine 18 connects；For being granulated blower 5, pipe heat exchanger 8, cooling blower 9, spiral shell to 2 liquid surface height controlling of tundish
Screw out glassware 10, bucket elevator 11, plate heat exchanger 14, generating set 16, sack cleaner 17, the switch of air-introduced machine 18 and ginseng
Number is adjusted, 12 discharging of finished bin, air hose 13,15 aperture regulation of steam pipe.
As illustrated in fig. 1 and 2, the method for a kind of pair of fusion smelting slag glass granulation and waste heat recovery processing, including walk as follows
Rapid: (1) fusion smelting slag uniformly flows into tundish 2 through chute 1, and then falls into granulation thorax 4 through 3 uniform flow of diversion trench, place
Reason process ensures that tundish 2 controls certain liquid level to guarantee that metallurgical slag flows into granulation 4 stability of flow of thorax.(2) start grain
Change blower 5, uniformly bulging carries out chilling to the outflow metallurgical slag of diversion trench 3 by air blast slot 6 by cold wind, quickly by fusion smelting slag
Temperature is reduced to 800 DEG C or less；Fusion smelting slag chilling is changed into glass dregs 7, and 7 grain diameter of glass dregs is within 15mm.(3)
The glass dregs 7 of high temperature fall into pipe heat exchanger 8 and carry out heat exchange, at the same cooling blower 9 by cold wind from pipe heat exchanger 8 and spiral
It is blasted between discharger 10 and supplement cooling is carried out to high temp glass slag.(4) glass dregs 7 cool to 100 DEG C or less through spiral discharging device
Glass dregs 7 are promoted to finished bin 12 using bucket elevator 11 and store outer sell by 10 dischargings.(5) through granulation blower 5 and cooling wind
The cold wind that machine 9 blasts obtains 400 DEG C or more hot winds, hot winds and is delivered to plate heat exchanger 14 through air hose 13 after above-mentioned heat exchange；
A large amount of steams are generated through heat exchange through pipe heat exchanger 8 and plate heat exchanger 14, steam is delivered to power generation by steam pipe 15
Unit 16 generates electricity.(6) flue-gas temperature after the heat exchange of plate heat exchanger 14 is down to 200 DEG C hereinafter, being delivered to through air hose 13
Sack cleaner 17, through 19 outlet of chimney under the action of air-introduced machine 18.
Wherein, above-mentioned steps operation can carry out off-line operation progress by central control system 20, realize centering by programming
Between wrap 2, be granulated blower 5, pipe heat exchanger 8, cooling blower 9, spiral discharging device 10, bucket elevator 11, finished bin 12, air hose
13, plate heat exchanger 14, steam pipe 15, generating set 16, sack cleaner 17, the control of air-introduced machine 18.Wherein, fusion smelting
Vitreum content reaches 95% or more to slag in obtained glass dregs 7 after processing.Wherein, after the process finally transport at
7 temperature of glass dregs in product storehouse 12 is no more than 80 DEG C.Wherein, fusion smelting slag ton slag generated energy after the process is more than
25kWh.Wherein, discharged gas fume concentration is lower than 10mg/m after the process3。
Claims (10)
1. the device of a kind of pair of fusion smelting slag glass granulation and waste heat recycling comprising: chute (1), tundish (2), water conservancy diversion
Slot (3), granulation thorax (4), granulation blower (5), air blast slot (6), pipe heat exchanger (8), cooling blower (9), spiral discharging device
(10), elevator, preferably bucket elevator (11), finished bin (12), plate heat exchanger (14), the first steam pipe (15),
Two steam pipes (15), generating set (16) and purification tapping equipment；Chute (1) connects tundish (2), is used for fusion smelting slag
It is flowed into tundish (2) through chute (1), tundish (2) connects granulation thorax (4) through diversion trench (3), and being used for will be in tundish (2)
Fusion smelting slag wander through diversion trench (3) into granulation thorax (4), granulation thorax (4) and granulation blower (5) pass through air blast slot (6)
Connection, the cold wind for that will be granulated blower (5) generation is bloated by air blast slot (6), with the fusion smelting flowed out to diversion trench (3)
Slag carries out chilling to be transformed into glass dregs (7), pipe heat exchanger (8) is provided with below granulation thorax (4), so that the glass dregs of high temperature
(7) pipe heat exchanger (8) are fallen into and carry out heat exchange；Spiral discharging device (10) are provided with below pipe heat exchanger (8), being used for will be hot
Glass dregs (7) after exchange are sent to spiral discharging device (10)；Spiral discharging device (10) boosted machine (11) connects finished bin
(12), for being promoted the glass dregs (7) in spiral discharging device (10) in finished bin (12)；Cooling blower (9) passes through first
Air hose is connected between pipe heat exchanger (8) and spiral discharging device (10)；Cold wind for generating cooling blower (9) is from tubular type
It is blasted between heat exchanger (8) and spiral discharging device (10) and supplement cooling is carried out to the glass dregs of high temperature；It is granulated the upper of thorax (4)
End is by the second air hose (13) connecting plate type heat exchanger (14), and the cold wind blasted through granulation blower (5) and cooling blower (9) is through warm
After exchange, hot wind is obtained, hot wind is delivered to plate heat exchanger (14) through the second air hose (13)；Plate heat exchanger (14) passes through third
Air hose (13) connection purification tapping equipment, plate heat exchanger (14) pass through the first steam pipe (15) connection generating set (16), pipe
Formula heat exchanger (8) passes through the second steam pipe (15) connection generating set (16), pipe heat exchanger (8) and plate heat exchanger (14) warp
Heat exchange generates steam, and steam is delivered to generating set (16) by the first and second steam pipes (15) and generates electricity.
2. the apparatus according to claim 1, which is characterized in that purification tapping equipment includes bag filter (17), air inducing
Machine (18) and chimney (19), arrival end of the plate heat exchanger (14) by third air hose (13) connection bag filter (17), cloth
Flue gas warp of the outlet end of bag dust collector (17) by air-introduced machine (18) connection chimney (19), after plate heat exchanger (14) heat exchange
Third air hose (13) is delivered to sack cleaner (17), through chimney (19) outlet under the action of air-introduced machine (18).
3. device according to claim 1 or 2, which is characterized in that the chute (1), tundish (2), diversion trench (3) and
Flame-proof thermal insulation material is respectively provided with inside granulation thorax (4).
4. device described in one of -3 according to claim 1, which is characterized in that the diversion trench (3) exports with slender type, institute
Slender type outlet length-width ratio is stated not less than 10, to guarantee that fusion smelting slag flows into granulation thorax (4) in liquid level shape.
5. device described in one of -4 according to claim 1, which is characterized in that air blast slot (6) outlet is arranged in diversion trench
(3) immediately below slender type exports；Air blast slot (6) outlet is provided with venthole, guarantees air blast even flow field, air blast slot (6) and
Diversion trench (3) length is corresponding in order to fusion smelting slag glass granulation.
6. device described in one of -5 according to claim 1, which is characterized in that set outside first, second, and third air hose
Thermal insulation material is equipped with to carry out external thermal insulation, is provided with thermal insulation material outside the first and second steam pipes (15) to carry out external thermal insulation.
7. device described in one of -6 according to claim 1, which is characterized in that described device further includes central control system (20), in
Control system (20) and tundish (2), pipe heat exchanger (8), cooling blower (9), spiral discharging device (10), mention granulation blower (5)
Rise machine (11), finished bin (12), the air hose (13), plate heat exchanger (14), the steam pipe (15), generating set (16),
Sack cleaner (17) and air-introduced machine (18) connection；Central control system (20) is for controlling tundish (2) liquid level；In
Control system (20) is used for granulation blower (5), pipe heat exchanger (8), cooling blower (9), spiral discharging device (10), elevator
(11), plate heat exchanger (14), generating set (16), sack cleaner (17) and air-introduced machine (18) carry out switch control and parameter
Adjust control；Central control system (20) is for controlling the discharging of finished bin (12)；Central control system (20) is used for and the wind
The aperture of pipe (13) and the steam pipe (15) is adjusted.
8. a kind of method fusion smelting slag glass being granulated using device described in one of claim 1-7 and waste heat recycles,
It is characterized by comprising the following steps:
(1) fusion smelting slag uniformly flows into tundish (2) through chute (1), and then falls into granulation thorax through diversion trench (3) uniform flow
(4) in, by the liquid level of control tundish (2) to guarantee that metallurgical slag flows stable inflow granulation in preferred process process
Thorax (4)；
(2) starting is granulated blower (5), will be granulated the cold wind that blower (5) generate and uniformly be bloated to diversion trench by air blast slot (6)
(3) outflow metallurgical slag carries out chilling, and fusion smelting slag temperature is quickly reduced to 800 DEG C or less；The transformation of fusion smelting slag chilling
For glass dregs (7), preferably the grain diameter of glass dregs (7) is within 15mm；
(3) glass dregs (7) of high temperature fall into pipe heat exchanger (8) and carry out heat exchange, at the same cooling blower (9) by cold wind from tubular type
It is blasted between heat exchanger (8) and spiral discharging device (10) and supplement cooling is carried out to high temp glass slag；
(4) glass dregs (7) cool to 100 DEG C or less and discharge through spiral discharging device (10), using elevator (11) by glass dregs (7)
Finished bin (12) is promoted to be stored；
(5) cold wind blasted through granulation blower (5) and cooling blower (9) obtains 400 DEG C or more hot winds, hot wind after heat exchange
Plate heat exchanger (14) are delivered to through the first air hose (13)；By being produced after pipe heat exchanger (8) and plate heat exchanger (14) heat exchange
Raw steam, steam are delivered to generating set (16) by the first and second steam pipes (15) and generate electricity；
(6) flue-gas temperature after plate heat exchanger (14) heat exchange is down to 200 DEG C hereinafter, by third air hose (13) connection purification
Tapping equipment is to carry out outlet；It is preferred that the sack cleaner (17) of purification tapping equipment is delivered to by third air hose (13),
Chimney (19) outlet of purified tapping equipment under the action of the air-introduced machine (18) of purification tapping equipment.
9. according to the method described in claim 8, it is characterized by: above-mentioned steps carry out off-line operation by central control system (20)
It is controlled.
10. method according to claim 8 or claim 9, it is characterised in that: fusion smelting slag obtained glass dregs after processing
(7) vitreum content reaches 95% or more in.It is preferred that final transport to glass dregs (7) temperature in finished bin (12) is no more than 80
℃.Ton slag generated energy is more than 25kWh to preferred molten metallurgical slag after treatment by using the treatment method.It is preferred that discharged gas fume is dense after this method processing
Degree is lower than 10mg/m3。
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| CN115627304A (en) * | 2022-10-26 | 2023-01-20 | 中冶节能环保有限责任公司 | Efficient wind-crushing waste heat recovery method and device for molten electric furnace slag |
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