CN102732654A - Device and method for carrying out granulation treatment and residual heat utilization on liquid-state furnace slag - Google Patents
Device and method for carrying out granulation treatment and residual heat utilization on liquid-state furnace slag Download PDFInfo
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- CN102732654A CN102732654A CN2012102402541A CN201210240254A CN102732654A CN 102732654 A CN102732654 A CN 102732654A CN 2012102402541 A CN2012102402541 A CN 2012102402541A CN 201210240254 A CN201210240254 A CN 201210240254A CN 102732654 A CN102732654 A CN 102732654A
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- slag
- solid separation
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/02—Physical or chemical treatment of slags
- C21B2400/022—Methods of cooling or quenching molten slag
- C21B2400/024—Methods of cooling or quenching molten slag with the direct use of steam or liquid coolants, e.g. water
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/02—Physical or chemical treatment of slags
- C21B2400/022—Methods of cooling or quenching molten slag
- C21B2400/026—Methods of cooling or quenching molten slag using air, inert gases or removable conductive bodies
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/05—Apparatus features
- C21B2400/062—Jet nozzles or pressurised fluids for cooling, fragmenting or atomising slag
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/05—Apparatus features
- C21B2400/066—Receptacle features where the slag is treated
- C21B2400/074—Tower structures for cooling, being confined but not sealed
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/08—Treatment of slags originating from iron or steel processes with energy recovery
Abstract
The invention discloses a device and a method for carrying out granulation treatment and residual heat utilization on liquid-state furnace slag. The liquid-state furnace slag is chilled and granulated in a granulation assembly through introduced high-pressure air or high-pressure water; granulated grains enter a slag storing pot; slag grains are lifted into a gas-solid separation cooling chamber through a bucket elevator; granulating rough tail gas at an outlet of the upper end of the slag storing pot passes through a tail gas cyclone separator and the separated solid grains are conveyed into the gas-solid separation cooling chamber; the granulating tail gas is conveyed into a residual heat boiler; the gas-solid separation cooling chamber is connected with a converter and the air enters from an air inlet of the converter and sequentially passes through the converter and the gas-solid separation cooling chamber, so that the solid slag grains are further cooled; the gas absorbing the residual heat of the furnace slag is discharged from the upper end of the gas-solid separation cooling chamber and enters the residual heat boiler; finally, the cooled furnace slag is discharged from a grain outlet of the converter; and steam generated by the residual heat boiler enters a steam turbine to generate power.
Description
Technical field
The present invention relates to a kind of treatment of slag, relate in particular to a kind of liquid slag granulated processed and residual heat using device and method.
Background technology
Slag is the inevitable by product in the steelmaking process, and its output is about the 15%-20% of crude steel output.The formation temperature of slag is 1500 ℃-1700 ℃, has very high sensible heat, so slag is one of main products in the steel manufacture process, belongs to high-grade residual heat resources, has very high recycling and is worth.Rationally utilization and efficient recovery slag can be realized the steel industry Sustainable development, reduce production costs, and improve the business economic benefit, also can reduce pollution simultaneously, turn waste into wealth.
Liquid slag need make its cooling form the piece slag of granularity less than 30mm through processing under cooling.The type of cooling at present commonly used has water quenching, hot application method, waste heat to sprinkle method, the wind method etc. of quenching from solution, tray.Domestic treatment process mainly is to adopt the method for shrend to produce grain slag at present, and the heat of liquid slag often can not get effective recycling, even lost fully, and can consume great amount of water resources.Water quenching also can produce environmental pollution simultaneously.
The granulation of liquid steel slag and UTILIZATION OF VESIDUAL HEAT IN have significance for the utilization again of the such solid waste of slag.Also there be not at present a kind of technology and device that efficiently utilizes slag and waste heat, simple, the lower-cost high-temperature steel slag particleization of system and waste heat recovery.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the shortcoming of prior art, proposes a kind of liquid slag granulated processed and residual heat using device and method; Utilize the waste heat of liquid slag; In cooled slag, reclaim heat, be used to produce steam, drive the steam turbine generating.
The technical scheme that the present invention solves above technical problem is:
A kind of liquid slag granulated processed and residual heat using device comprise by granulation assembly, slag ladle, tail gas separator, waste heat boiler, steam turbine, fly-ash separator, induced draft fan, chimney, bucket elevator, gas solid separation cooling room, converter, fan; The granulation assembly is provided with high-pressure air or high-pressure water inlet, liquid slag inlet and granulated slag outlet; The granulated slag outlet links to each other with slag ladle; The slag ladle bottom is provided with gas inlet, and the slag ladle bottom links to each other with bucket elevator through the solid slag material blanking tube of high temperature, and the slag ladle top links to each other with the tail gas separator through the thick tail gas pipe connecting of granulation; Tail gas separator bottom and bucket elevator top link to each other with the gas solid separation cooling room; Gas solid separation cooling room bottom links to each other with the converter slag inlet, and tail gas separator top links to each other with waste heat boiler through granulation tail gas pipe connecting, and gas solid separation cooling room top links to each other with waste heat boiler through the high temperature air pipe connecting; One end of converter is provided with the slag inlet, and the other end is provided with gas inlet and slag granules outlet, and motor is equipped with in converter; The vapour outlet of waste heat boiler is through the pipe connection steam turbine, and the outlet of the cryogenic gas of waste heat boiler connects fly-ash separator and induced draft fan to chimney successively through pipeline.
Liquid slag granulated processed and UTILIZATION OF VESIDUAL HEAT IN method comprise: the inlet of granulation assembly feeds high-pressure air or high pressure water, and liquid slag entrainments from high-pressure air or the high pressure water that the slag inlet of granulation assembly is passed into, and gets into after the quenching granulation in the slag ladle;
The slag ladle lower inlet feeds fluidization air; Slag cools in slag ladle; Bigger slag granules is deposited to the slag ladle bottom in the slag ladle; Get in the bucket elevator through the solid slag material blanking tube of high temperature, bucket elevator promotes this part solid-state slag granules, and delivers to further cooling in the gas solid separation cooling room through the precooling feed-pipe;
High-temperature gas after the less slag granules that produces in the slag ladle is heated carries; Get into gas solid separation in the tail gas separator through the thick tail gas pipe connecting of granulation; Isolated solid particulate is sent in the gas solid separation cooling room, and gas is telomerized tail gas pipe connecting entering waste heat boiler on the tail gas separator then;
Slag granules gets into converter through stage trapping cooling in the gas solid separation cooling room, in converter along with constantly the circling round of converter, further cooling, final cooled slag is discharged by the converter particle outlet;
Being used for the air of cooled slag in the gas solid separation cooling room is fed from the gas inlet of converter by fan; Process of cooling air and slag granules move toward one another; Be that air obtains multistage heating through the waste heat of converter, gas solid separation cooling room absorption slag granules successively, finally the high temperature air pipe connecting gets into waste heat boiler through gas solid separation cooling room top;
From the beginning this two portions high-temperature gas of granulation tail gas pipe connecting and high temperature air pipe connecting in waste heat boiler with water heat-shift and produce steam, steam can generate electricity through turbine; Cryogenic gas is sent into chimney through induced draft fan after the fly-ash separator dedusting, finally enter in the atmosphere.
The technical scheme that the present invention further limits is:
Aforesaid liquid slag granulated processed and residual heat using device and method, the granulation assembly is made up of the inlet chamber, contraction section, slag entrance, amplifying sections and the outlet coupling end that connect successively; Said high-pressure air or high-pressure water inlet are located at the inlet chamber.
High-pressure air or high pressure water get into the inlet chamber from inlet, form the high-velocity jet fluid through the contraction section speed-raising, and fluid arrives criticality; The high speed fluid further raises speed in amplifying sections; Produce pressure drop, make liquid slag be inhaled into the granulation assembly from inlet, liquid slag becomes small droplets; The slag small droplets is cooled off fast and is solidify to form small-particle, after in the outlet coupling end entering slag ladle.
Aforesaid liquid slag granulated processed and residual heat using device and method, said gas solid separation cooling room is made up of riser tube, cyclonic separator, one-level cooling room, secondary cooling room, three grades of cooling rooms and standpipe; The import of standpipe connects tail gas separator bottom and bucket elevator top; The outlet of standpipe is communicated with riser tube; The top of riser tube is communicated with cyclonic separator, and the bottom is communicated with the one-level cooling room, and cyclonic separator top connects the high temperature air pipe connecting; One-level cooling room, secondary cooling room and three grades of cooling rooms are communicated with from top to bottom successively, and the bottom of three grades of cooling rooms connects converter.
High temperature furnace slag particle from bucket elevator and tail gas separator is got into by standpipe in the standpipe of gas solid separation cooling room, carries cooling through the air that rises, and gets in the cyclonic separator through riser tube and cools off; Cooled slag particle after the separation falls to get into successively in one-level cooling room, secondary cooling room and three grades of cooling rooms and cools off, and gets into converter again and further cools off; The warm air that converter is come out get into successively three grades of cooling rooms, secondary cooling room, one-level cooling room, riser tube and cyclonic separator heat up become high temperature air after, get into waste heat boiler through the high temperature air pipe connecting.
Aforesaid liquid slag granulated processed and residual heat using device and method, the gas solid separation cooling room is made up of riser tube, three grades of gas solid separation water coolers, secondary gas solid separation water cooler, one-level gas solid separation water cooler and standpipes; The import of standpipe connects tail gas separator bottom and bucket elevator top; The outlet of standpipe is communicated with riser tube; Riser tube top is communicated with three grades of gas solid separation water coolers, and the bottom is communicated with secondary gas solid separation water cooler, and three grades of gas solid separation water cooler tops connect the high temperature air pipe connecting; Three grades of gas solid separation water coolers, secondary gas solid separation water cooler and one-level gas solid separation water coolers are from be communicated with down to following successively, and the bottom of one-level gas solid separation water cooler connects converter.
High temperature furnace slag particle from bucket elevator and tail gas separator gets in the standpipe of gas solid separation cooling room, is got in three grades of gas solid separation water coolers by the entrainment of warm air from secondary gas solid separation water cooler and cools off; Through secondary gas solid separation water cooler and the cooling of one-level gas solid separation water cooler, get into converter again and further cool off successively; Warm air from converter; It is up to get into one-level gas solid separation water cooler, secondary gas solid separation water cooler, riser tube and three grades of gas solid separation water coolers successively; The heat that absorbs slag granules gets into waste heat boiler through the high temperature air pipe connecting after heating up and becoming high temperature air.
Aforesaid liquid slag granulated processed and residual heat using device and method are made up of charging standpipe, baffle plate, baffling bed, gas solid separation water cooler, air distribution plate and blanking pipe connecting admittedly separate cooling room; The import of charging standpipe connects tail gas separator bottom and bucket elevator top; Be provided with the laminates aerofoil in the baffling bed from top to bottom successively, the outlet of charging standpipe connects the air distribution plate that is positioned at the top, and the junction is provided with baffle plate; The top of baffling bed is communicated with the gas solid separation water cooler; Gas solid separation water cooler top connects the high temperature air pipe connecting, and the bottom connects air distribution plate, and the bottom of baffling bed connects converter.
Get into from the high temperature furnace slag particle of bucket elevator and tail gas separator in the top standpipe of gas solid separation cooling room, under the effect of gravity, the laminates aerofoil that is provided with in the baffling bed falls to baffling bed bottom; In dropping process, from the air cooling of converter, final slag gets into converter to steel slag particle in baffling bed bottom by always; From the warm air of converter, in the baffling bed, upwards flow, pass through each layer air distribution plate successively, the heat that absorbs slag granules gets into gas solid separation in the gas solid separation water cooler after heating up and becoming high temperature air; Isolated slag fine particle falls in the inflection fluidized bed, and high temperature air then gets into waste heat boiler through the high temperature air pipe connecting.
Aforesaid liquid slag granulated processed and residual heat using device and method, said converter are to tilt to place, and the height of converter slag inlet is higher than the height of slag granules outlet.
Air gets into from the gas inlet of converter, and air flow is opposite with slag granules heading, and converter has certain obliquity, and the particle entrance end is higher than the particle outlet section, and constantly rotation, and slag moves to the converter exit end continuously, and discharges from particle outlet.
The invention has the beneficial effects as follows:
⑴ adopt water to compare as the method for heat-eliminating medium with tradition; The present invention can adopt high-pressure air as heat-eliminating medium; Water cooling is not only bad for the recycling of heat, and possibly cause the pollution of environment, adopts air cooling; Can this part high-temperature gas of effective collection, utilize the heat of high-temperature gas to produce steam through waste heat boiler;
⑵ the present invention can be divided into three phases for the cooling of slag: the fs is adopted granulation assembly and slag ladle; The liquid towards slag carries out the Quench granulation; This stage has not only been reduced slag temperature, and more important is to make the liquid slag granulation become solid granulates through the granulation assembly, and granulation is effective; The slag particle size is little and even, is convenient to follow-up recycling for slag; Subordinate phase is carried out secondary cooling, air recovery waste heat through the gas solid separation cooling room to slag granules; Phase III adopts converter that slag granules is carried out three coolings, and converter is constantly circled round, and slag particle is more abundant with contacting of air, so waste heat has also obtained more making full use of;
⑶ apparatus of the present invention finally can produce and be higher than 600 ℃ high temperature air, adopt waste heat boiler, reclaim the contained waste heat of high temperature air more than 600 ℃, produce the steam generating;
⑷ apparatus of the present invention are compared with water quenching slag treatment technology, do not efflux waste gas, can not produce environmental pollution; The water consumption is little, and energy consumption is low, and the waste heat recovery rate is high, and is stable.
Description of drawings
Fig. 1 is the connection synoptic diagram of apparatus of the present invention.
Fig. 2 is a granulation unit construction synoptic diagram.
Fig. 3-the 1st, the gas solid separation cooling room structural representation of embodiment 1.
Fig. 3-the 2nd, the gas solid separation cooling room structural representation of embodiment 2.
Fig. 3-the 3rd, the gas solid separation cooling room structural representation of embodiment 3.
Among Fig. 1: (1) granulation assembly; (2) slag ladle; (3) the thick tail gas pipe connecting of granulation; (4) precooling feed-pipe; (5) tail gas separator; (6) granulation tail gas pipe connecting; (7) high temperature air pipe connecting; (8) waste heat boiler; (9) steam turbine; (10) fly-ash separator; (11) induced draft fan; (12) chimney; (13) the solid slag material blanking tube of high temperature; (14) bucket elevator; (15) gas solid separation cooling room; (16) motor; (17) converter; (18) fan;
Among Fig. 2: (1) granulation assembly; (1-1) inlet chamber; (1-2) contraction section; (1-3) slag entrance; (1-4) amplifying sections; (1-5) outlet coupling end;
Among Fig. 3-1,2,3: (7) high temperature air pipe connecting; (15) gas solid separation cooling room; (15-1) riser tube; (15-2) cyclonic separator; (15-3) one-level cooling room; (15-4) secondary cooling room; (15-5) three grades of cooling rooms; (15-6) standpipe; (15-7) three grades of gas solid separation water coolers; (15-8) riser tube; (15-9) standpipe; (15-10) secondary gas solid separation water cooler; (15-11) one-level gas solid separation water cooler; (15-12) charging standpipe; (15-13) baffle plate; (15-14) baffling bed; (15-15) gas solid separation water cooler; (15-16) air distribution plate; (15-17) blanking pipe connecting;
is from the converter warm air;
hot slag advances converter.
Embodiment
Present embodiment provides a kind of liquid slag granulated processed and residual heat using device; Connect as shown in Figure 1ly, comprise by granulation assembly 1, slag ladle 2, tail gas separator 5, waste heat boiler 8, steam turbine 9, fly-ash separator 10, induced draft fan 11, chimney 12, bucket elevator 14, gas solid separation cooling room 15, converter 17, fan 18; Granulation assembly 1 is provided with high-pressure air or high-pressure water inlet A, liquid slag inlet B and granulated slag outlet; The granulated slag outlet links to each other with slag ladle 2; Slag ladle 2 bottoms are provided with gas inlet C; Slag ladle 2 bottoms link to each other with bucket elevator 14 through the solid slag material blanking tube 13 of high temperature; Slag ladle 2 tops link to each other with tail gas separator 5 through the thick tail gas pipe connecting 3 of granulation, and tail gas separator 5 bottoms and bucket elevator 14 tops link to each other with gas solid separation cooling room 15, and gas solid separation cooling room 15 bottoms link to each other with converter 17 slags inlet; Tail gas separator 5 tops link to each other with waste heat boiler 8 through granulation tail gas pipe connecting 6, and gas solid separation cooling room 15 tops link to each other with waste heat boiler 8 through high temperature air pipe connecting 7; One end of converter 17 is provided with the slag inlet, and the other end is provided with gas inlet D and slag granules outlet E, and motor 16 is equipped with in converter; The vapour outlet of waste heat boiler 8 is through pipe connection steam turbine 9, and the outlet of the cryogenic gas of waste heat boiler 8 connects fly-ash separator 10 and 11 to chimney 12 successively through pipeline.
As shown in Figure 2, granulation assembly 1 is made up of inlet chamber 1-1, contraction section 1-2, slag entrance 1-3, amplifying sections 1-4 and outlet coupling end 1-5; High-pressure air or high pressure water get into inlet chamber 1-1 from inlet A, form the high-velocity jet fluid through contraction section 1-2 speed-raising, and fluid arrives criticality; The high speed fluid further raises speed in amplifying sections 1-4; Produce pressure drop, make liquid slag be inhaled into the granulation assembly 1 from inlet B, liquid slag becomes small droplets; The slag small droplets is cooled off fast and is solidify to form small-particle, after in the outlet coupling end 1-5 entering slag ladle 2; Granulation assembly 1 adopts high temperature material, and there is the heat-resistant antifriction coating on the surface, like silit etc.
Converter 17 is tilts to place, and the height of converter slag inlet is higher than the height of slag granules outlet.Air gets into from the gas inlet D of converter 17, and air flow is opposite with slag granules heading, and converter has certain obliquity, and the particle entrance end is higher than the particle outlet section, and constantly rotation, and slag moves to converter 17 exit end continuously, and discharges from particle outlet E.
Liquid slag granulated processed and UTILIZATION OF VESIDUAL HEAT IN method comprise: the inlet A of granulation assembly 1 feeds high-pressure air or high pressure water, and liquid slag entrainments from high-pressure air or the high pressure water that the slag inlet B of granulation assembly 1 is passed into, and gets into after the quenching granulation in the slag ladle 2;
High-temperature gas after the less slag granules that produces in the slag ladle 2 is heated carries; Get into gas solid separation in the tail gas separator 5 through the thick tail gas pipe connecting 3 of granulation; Isolated solid particulate is sent in the gas solid separation cooling room 15, and gas is telomerized tail gas pipe connecting 6 entering waste heat boilers 8 on tail gas separator 5 then;
Slag granules gets into converter 17 through stage trapping cooling in gas solid separation cooling room 15, in converter 17 along with constantly the circling round of converter, further cooling, final cooled slag is discharged by converter particle outlet E;
Being used for the air of cooled slag in the gas solid separation cooling room 15 is fed from the gas inlet D of converter 17 by fan 18; Process of cooling air and slag granules move toward one another; Be that air obtains multistage heating through the waste heat that converter 17, gas solid separation cooling room 15 absorb slag granules successively, finally get into waste heat boiler 8 through gas solid separation cooling room 15 top high temperature air pipe connectings 7;
With the water heat-shift and produce steam, steam can generate electricity through turbine 9 this two portions high-temperature gas of granulation tail gas pipe connecting 6 and high temperature air pipe connecting 7 in waste heat boiler 8 from the beginning; Cryogenic gas is sent into chimney 12 through induced draft fan 11 after fly-ash separator 10 dedustings, finally enter in the atmosphere.
The gas solid separation cooling room 15 of present embodiment is made up of riser tube 15-1, cyclonic separator 15-2, one-level cooling room 15-3, secondary cooling room 15-4, three grades of cooling room 15-5 and standpipe 15-6; The import of standpipe 15-6 connects tail gas separator 5 bottoms and bucket elevator 14 tops; The outlet of standpipe 15-6 is communicated with riser tube 15-1; The top of riser tube 15-1 is communicated with cyclonic separator 15-2, and the bottom is communicated with one-level cooling room 15-3, and cyclonic separator 15-2 top connects high temperature air pipe connecting 7; One-level cooling room 15-3, secondary cooling room 15-4 and three grades of cooling room 15-5 are communicated with from top to bottom successively, and the bottom of three grades of cooling room 15-5 connects converter 17.High temperature furnace slag particle from bucket elevator 14 and tail gas separator 5 is got into by standpipe 15-6 among the standpipe 15-6 of gas solid separation cooling room 15, carries cooling through the air that rises, and gets among the cyclonic separator 15-2 through riser tube 15-1 and cools off; Cooled slag particle after the separation falls to get into successively among one-level cooling room 15-3, secondary cooling room 15-4 and three grades of cooling room 15-5 and cools off, and gets into converter 17 again and further cools off; The warm air that converter 17 is come out get into successively three grades of cooling room 15-5, secondary cooling room 15-4, one-level cooling room 15-3, riser tube 15-1 and cyclonic separator 15-2 heat up become high temperature air after, get into waste heat boilers 8 through high temperature air pipe connecting 7.
The difference of present embodiment and embodiment 1 is; The structure of gas solid separation cooling room 15 is different, and the gas solid separation cooling room 15 of present embodiment is made up of riser tube 15-8, three grades of gas solid separation water cooler 15-7, secondary gas solid separation water cooler 15-10, one-level gas solid separation water cooler 15-11 and standpipe 15-9; The import of standpipe 15-9 connects tail gas separator 5 bottoms and bucket elevator 14 tops; The outlet of standpipe 15-6 is communicated with riser tube 15-8; Riser tube 15-8 top is communicated with three grades of gas solid separation water cooler 15-7; The bottom is communicated with secondary gas solid separation water cooler 15-10; Three grades of gas solid separation water cooler 15-7 tops connect 7, three grades of gas solid separation water coolers of high temperature air pipe connecting 15-7, secondary gas solid separation water cooler 15-10 and one-level gas solid separation water cooler 15-11 from being communicated with successively down to following, and the bottom of one-level gas solid separation water cooler 15-11 connects converter 17.High temperature furnace slag particle from bucket elevator 14 and tail gas separator 5 gets among the standpipe 15-9 of gas solid separation cooling room 15, is got among three grades of gas solid separation water cooler 15-7 by the entrainment of warm air from secondary gas solid separation water cooler 15-10 and cools off; Through secondary gas solid separation water cooler 15-10 and one-level gas solid separation water cooler 15-11 cooling, get into converter 17 again and further cool off successively; Warm air from converter 17; It is up to get into one-level gas solid separation water cooler 15-11, secondary gas solid separation water cooler 15-10, riser tube 15-8 and three grades of gas solid separation water cooler 15-7 successively; After the heat that absorbs slag granules heats up and becomes high temperature air, get into waste heat boiler 8 through high temperature air pipe connecting 7.
The difference of present embodiment and embodiment 1 is; The structure of gas solid separation cooling room 15 is different, and the solid separation cooling room 15 of present embodiment is made up of charging standpipe 15-12, baffle plate 15-13, baffling bed 15-14, gas solid separation water cooler 15-15, air distribution plate 15-16 and blanking pipe connecting 15-17; The import of charging standpipe 15-12 connects tail gas separator 5 bottoms and bucket elevator 14 tops; Be provided with laminates aerofoil 15-16 in the baffling bed 15-14 from top to bottom successively, the outlet of charging standpipe 15-12 connects the air distribution plate 15-16 that is positioned at the top, and the junction is provided with baffle plate 15-13; The top of baffling bed 15-14 is communicated with gas solid separation water cooler 15-15; Gas solid separation water cooler 15-15 top connects high temperature air pipe connecting 7, and the bottom connects air distribution plate 15-16, and the bottom of baffling bed 15-14 connects converter 17.High temperature furnace slag particle from bucket elevator 14 and tail gas separator 5 gets among the top standpipe 15-12 of gas solid separation cooling room 15, and under the effect of gravity, the laminates aerofoil 15-16 that is provided with in the baffling bed 15-14 falls to baffling bed 15-14 bottom; In dropping process, from the air cooling of converter 17, final slag gets into converter 17 to steel slag particle in baffling bed 15-14 bottom by always; From the warm air of converter 17, in baffling bed 15-14 on flow, pass through each layer air distribution plate 15-16 successively, after the heat that absorbs slag granules heats up and becomes high temperature air, get into gas solid separation among the gas solid separation water cooler 15-15; Isolated slag fine particle falls among the inflection fluidized bed 15-14, and high temperature air then gets into waste heat boilers 8 through high temperature air pipe connecting 7.
Except that the foregoing description, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (12)
1. liquid slag granulated processed and residual heat using device is characterized in that: comprise by granulation assembly (1), slag ladle (2), tail gas separator (5), waste heat boiler (8), steam turbine (9), fly-ash separator (10), induced draft fan (11), chimney (12), bucket elevator (14), gas solid separation cooling room (15), converter (17), fan (18); Said granulation assembly (1) is provided with high-pressure air or high-pressure water inlet (A), liquid slag inlet (B) and granulated slag outlet; Said granulated slag outlet links to each other with slag ladle (2); Slag ladle (2) bottom is provided with gas inlet (C); Slag ladle (2) bottom links to each other with bucket elevator (14) through the solid slag material blanking tube (13) of high temperature; Slag ladle (2) top links to each other with tail gas separator (5) through the thick tail gas pipe connecting of granulation (3); Tail gas separator (5) bottom and bucket elevator (14) top link to each other with gas solid separation cooling room (15); Gas solid separation cooling room (15) bottom links to each other with converter (17) slag inlet, and tail gas separator (5) top links to each other with waste heat boiler (8) through granulation tail gas pipe connecting (6), and gas solid separation cooling room (15) top links to each other with waste heat boiler (8) through high temperature air pipe connecting (7); One end of converter (17) is provided with the slag inlet, and the other end is provided with gas inlet (D) and slag granules outlet (E), and motor (16) is equipped with in converter; The vapour outlet of said waste heat boiler (8) is through pipe connection steam turbine (9), and the outlet of the cryogenic gas of said waste heat boiler (8) connects fly-ash separator (10) and induced draft fan (11) to chimney (12) successively through pipeline.
2. liquid slag granulated processed as claimed in claim 1 and residual heat using device is characterized in that: said granulation assembly (1) is made up of the inlet chamber (1-1) that connects successively, contraction section (1-2), slag entrance (1-3), amplifying sections (1-4) and outlet coupling end (1-5); Said high-pressure air or high-pressure water inlet (A) are located at inlet chamber (1-1).
3. liquid slag granulated processed as claimed in claim 1 and residual heat using device is characterized in that: said gas solid separation cooling room (15) is made up of riser tube (15-1), cyclonic separator (15-2), one-level cooling room (15-3), secondary cooling room (15-4), three grades of cooling rooms (15-5) and standpipe (15-6); The import of said standpipe (15-6) connects tail gas separator (5) bottom and bucket elevator (14) top; The outlet of said standpipe (15-6) is communicated with riser tube (15-1); The top of said riser tube (15-1) is communicated with cyclonic separator (15-2); The bottom is communicated with one-level cooling room (15-3); Said cyclonic separator (15-2) top connects high temperature air pipe connecting (7), and said one-level cooling room (15-3), secondary cooling room (15-4) and three grades of cooling rooms (15-5) are communicated with from top to bottom successively, and the bottom of said three grades of cooling rooms (15-5) connects converter (17).
4. liquid slag granulated processed as claimed in claim 1 and residual heat using device is characterized in that: said gas solid separation cooling room (15) is made up of riser tube (15-8), three grades of gas solid separation water coolers (15-7), secondary gas solid separation water cooler (15-10), one-level gas solid separation water cooler (15-11) and standpipe (15-9); The import of said standpipe (15-9) connects tail gas separator (5) bottom and bucket elevator (14) top; The outlet of said standpipe (15-6) is communicated with riser tube (15-8); Said riser tube (15-8) top is communicated with three grades of gas solid separation water coolers (15-7); The bottom is communicated with secondary gas solid separation water cooler (15-10); Said three grades of gas solid separation water coolers (15-7) top connects high temperature air pipe connecting (7); Said three grades of gas solid separation water coolers (15-7), secondary gas solid separation water cooler (15-10) and one-level gas solid separation water cooler (15-11) are from be communicated with down to following successively, and the bottom of said one-level gas solid separation water cooler (15-11) connects converter (17).
5. liquid slag granulated processed as claimed in claim 1 and residual heat using device is characterized in that: the said cooling room (15) that separates admittedly is made up of charging standpipe (15-12), baffle plate (15-13), baffling bed (15-14), gas solid separation water cooler (15-15), air distribution plate (15-16) and blanking pipe connecting (15-17); The import of said charging standpipe (15-12) connects tail gas separator (5) bottom and bucket elevator (14) top; Be provided with laminates aerofoil (15-16) in the said baffling bed (15-14) from top to bottom successively; The outlet of said charging standpipe (15-12) connects the air distribution plate (15-16) that is positioned at the top; The junction is provided with baffle plate (15-13), and the top of said baffling bed (15-14) is communicated with said gas solid separation water cooler (15-15), and said gas solid separation water cooler (15-15) top connects high temperature air pipe connecting (7); The bottom connects air distribution plate (15-16), and the bottom of said baffling bed (15-14) connects converter (17).
6. like described liquid slag granulated processed of arbitrary claim among the claim 1-5 and residual heat using device, it is characterized in that: said converter (17) is tilts to place, and the height of converter slag inlet is higher than the height of slag granules outlet.
7. be used for the liquid slag granulated processed and the UTILIZATION OF VESIDUAL HEAT IN method of the said device of claim 1, it is characterized in that: comprising:
The inlet (A) of granulation assembly (1) feeds high-pressure air or high pressure water, and liquid slag entrainments from high-pressure air or the high pressure water that the slag inlet (B) of granulation assembly (1) is passed into, and gets into after the quenching granulation in the slag ladle (2);
Slag ladle (2) lower inlet (C) feeds fluidization air; Slag cools in slag ladle (2); Bigger slag granules is deposited to slag ladle (2) bottom in the slag ladle (2); Get in the bucket elevator (14) through the solid slag material blanking tube (13) of high temperature, bucket elevator (14) promotes this part solid-state slag granules, and delivers to further cooling in the gas solid separation cooling room (15) through precooling feed-pipe (4);
High-temperature gas after the less slag granules that produces in the slag ladle (2) is heated carries; Get into gas solid separation in the tail gas separator (5) through the thick tail gas pipe connecting of granulation (3); Isolated solid particulate is sent in the gas solid separation cooling room (15), and gas is then gone up telomerized tail gas pipe connecting (6) through tail gas separator (5) and got into waste heat boiler (8);
Slag granules gets into converter (17) through stage trapping cooling in gas solid separation cooling room (15), in converter (17) along with constantly the circling round of converter, further cooling, final cooled slag is discharged by converter particle outlet (E);
Being used for the air of cooled slag in the gas solid separation cooling room (15) is fed from the gas inlet (D) of converter (17) by fan (18); Process of cooling air and slag granules move toward one another; Be that air passes through the waste heat that converter (17), gas solid separation cooling room (15) absorb slag granules successively and obtains multistage heating, finally get into waste heat boiler (8) through gas solid separation cooling room (15) top high temperature air pipe connecting (7);
From the beginning this two portions high-temperature gas of granulation tail gas pipe connecting (6) and high temperature air pipe connecting (7) in waste heat boiler (8) with water heat-shift and produce steam, steam can generate electricity through turbine (9); Cryogenic gas is sent into chimney (12) through induced draft fan (11) after fly-ash separator (10) dedusting, finally enter in the atmosphere.
8. liquid slag granulated processed as claimed in claim 7 and UTILIZATION OF VESIDUAL HEAT IN method is characterized in that: said gas solid separation cooling room (15) is made up of riser tube (15-1), cyclonic separator (15-2), one-level cooling room (15-3), secondary cooling room (15-4), three grades of cooling rooms (15-5) and standpipe (15-6); High temperature furnace slag particle from bucket elevator (14) and tail gas separator (5) is got in the standpipe (15-6) of gas solid separation cooling room (15) by standpipe (15-6); Air through rising carries cooling, gets into cooling in the cyclonic separator (15-2) through riser tube (15-1); Cooled slag particle after the separation falls and gets into cooling in one-level cooling room (15-3), secondary cooling room (15-4) and the three grades of cooling rooms (15-5) successively, gets into further cooling of converter (17) again; The warm air that converter (17) is come out get into successively three grades of cooling rooms (15-5), secondary cooling room (15-4), one-level cooling room (15-3), riser tube (15-1) and cyclonic separator (15-2) heat up become high temperature air after, get into waste heat boiler (8) through high temperature air pipe connecting (7).
9. liquid slag granulated processed as claimed in claim 7 and UTILIZATION OF VESIDUAL HEAT IN method is characterized in that: said gas solid separation cooling room (15) is made up of riser tube (15-8), three grades of gas solid separation water coolers (15-7), secondary gas solid separation water cooler (15-10), one-level gas solid separation water cooler (15-11) and standpipe (15-9); High temperature furnace slag particle from bucket elevator (14) and tail gas separator (5) gets in the standpipe (15-9) of gas solid separation cooling room (15), is got into cooling in three grades of gas solid separation water coolers (15-7) by the entrainment of warm air from secondary gas solid separation water cooler (15-10); Pass through the cooling of secondary gas solid separation water cooler (15-10) and one-level gas solid separation water cooler (15-11) successively, get into further cooling of converter (17) again; Warm air from converter (17); It is up to get into one-level gas solid separation water cooler (15-11), secondary gas solid separation water cooler (15-10), riser tube (15-8) and three grades of gas solid separation water coolers (15-7) successively; The heat that absorbs slag granules gets into waste heat boiler (8) through high temperature air pipe connecting (7) after heating up and becoming high temperature air.
10. liquid slag granulated processed as claimed in claim 7 and UTILIZATION OF VESIDUAL HEAT IN method is characterized in that: gas solid separation cooling room (15) is made up of charging standpipe (15-12), baffle plate (15-13), baffling bed (15-14), gas solid separation water cooler (15-15), air distribution plate (15-16) and blanking pipe connecting (15-17); High temperature furnace slag particle from bucket elevator (14) and tail gas separator (5) gets in the top standpipe (15-12) of gas solid separation cooling room (15); Under the effect of gravity, fall to baffling bed (15-14) bottom along the interior laminates aerofoil (15-16) that is provided with of baffling bed (15-14); In dropping process, from the air cooling of converter (17), final slag gets into converter (17) to steel slag particle in baffling bed (15-14) bottom by always; From the warm air of converter (17), in baffling bed (15-14), upwards flow, pass through each layer air distribution plate (15-16) successively, the heat that absorbs slag granules gets into gas solid separation in the gas solid separation water cooler (15-15) after heating up and becoming high temperature air; Isolated slag fine particle falls in the inflection fluidized bed (15-14), and high temperature air then passes through high temperature air pipe connecting (7) and gets into waste heat boiler (8).
11. like described liquid slag granulated processed of arbitrary claim among the claim 7-10 and UTILIZATION OF VESIDUAL HEAT IN method, it is characterized in that: said granulation assembly (1) is made up of inlet chamber (1-1), contraction section (1-2), slag entrance (1-3), amplifying sections (1-4) and outlet coupling end (1-5); High-pressure air or high pressure water get into inlet chamber (1-1) from inlet (A), form the high-velocity jet fluid through contraction section (1-2) speed-raising, and fluid arrives criticality; The high speed fluid further raises speed in amplifying sections (1-4); Produce pressure drop, make liquid slag be inhaled into the granulation assembly (1) from inlet (B), liquid slag becomes small droplets; The slag small droplets is cooled off fast and is solidify to form small-particle, after in outlet coupling end (1-5) the entering slag ladle (2).
12. like described liquid slag granulated processed of arbitrary claim among the claim 7-10 and UTILIZATION OF VESIDUAL HEAT IN method; It is characterized in that: said air gets into from the gas inlet (D) of converter (17), and air flow is opposite with slag granules heading, and converter has certain obliquity; The particle entrance end is higher than the particle outlet section; And constantly rotation, slag moves to converter (17) exit end continuously, and discharges from particle outlet (E).
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103834753A (en) * | 2013-07-10 | 2014-06-04 | 吕勇 | Rapid granulating and curing device for molten slag |
| CN104232819A (en) * | 2013-06-20 | 2014-12-24 | 山东建筑大学 | Granulating device and method of liquid steel slag or liquid iron slag |
| CN105463139A (en) * | 2015-11-13 | 2016-04-06 | 中能京蓝（北京）环保工程有限公司 | Recovery method and device for sensible heat of fusion slag |
| CN105463140A (en) * | 2015-12-28 | 2016-04-06 | 中冶东方工程技术有限公司 | High-temperature molten slag processing and recovery system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201400690Y (en) * | 2009-04-09 | 2010-02-10 | 河北理工大学 | Supersonic gas nozzle for granulating liquid molten slags |
| CN201964782U (en) * | 2010-12-31 | 2011-09-07 | 邹岳明 | Converter with high-temperature heat recovery and utilization effect |
| CN102268495A (en) * | 2011-07-20 | 2011-12-07 | 北京中冶设备研究设计总院有限公司 | Process technology and equipment for granulating blast-furnace slag and utilizing waste heat |
| CN102522526A (en) * | 2011-12-13 | 2012-06-27 | 济宁市无界科技有限公司 | Production equipment and technology for cathode or anode material of converter-type lithium battery |
| CN202730144U (en) * | 2012-07-11 | 2013-02-13 | 江苏东能环保能源科技有限公司 | Granulation treatment and waste heat utilization device for liquid slags |
-
2012
- 2012-07-11 CN CN201210240254.1A patent/CN102732654B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201400690Y (en) * | 2009-04-09 | 2010-02-10 | 河北理工大学 | Supersonic gas nozzle for granulating liquid molten slags |
| CN201964782U (en) * | 2010-12-31 | 2011-09-07 | 邹岳明 | Converter with high-temperature heat recovery and utilization effect |
| CN102268495A (en) * | 2011-07-20 | 2011-12-07 | 北京中冶设备研究设计总院有限公司 | Process technology and equipment for granulating blast-furnace slag and utilizing waste heat |
| CN102522526A (en) * | 2011-12-13 | 2012-06-27 | 济宁市无界科技有限公司 | Production equipment and technology for cathode or anode material of converter-type lithium battery |
| CN202730144U (en) * | 2012-07-11 | 2013-02-13 | 江苏东能环保能源科技有限公司 | Granulation treatment and waste heat utilization device for liquid slags |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104232819A (en) * | 2013-06-20 | 2014-12-24 | 山东建筑大学 | Granulating device and method of liquid steel slag or liquid iron slag |
| CN103834753A (en) * | 2013-07-10 | 2014-06-04 | 吕勇 | Rapid granulating and curing device for molten slag |
| TWI571515B (en) * | 2014-12-27 | 2017-02-21 | Pen Chi Chiang | Method and system for stabilizing slag of different particle size |
| CN105463139A (en) * | 2015-11-13 | 2016-04-06 | 中能京蓝（北京）环保工程有限公司 | Recovery method and device for sensible heat of fusion slag |
| CN105463140A (en) * | 2015-12-28 | 2016-04-06 | 中冶东方工程技术有限公司 | High-temperature molten slag processing and recovery system |
| CN106990064B (en) * | 2017-04-28 | 2018-05-08 | 河南省计量科学研究院 | Gas concentration lwevel detecting system and detection method in a kind of industrial smoke |
| CN106990064A (en) * | 2017-04-28 | 2017-07-28 | 河南省计量科学研究院 | Gas concentration lwevel detecting system and detection method in a kind of industrial smoke |
| CN107674932A (en) * | 2017-09-05 | 2018-02-09 | 天津大学 | A kind of high-efficient metallurgical hot blast production method and device |
| CN107806769A (en) * | 2017-09-05 | 2018-03-16 | 天津大学 | A kind of heat energy recycle method and device of fusion metallurgy slag |
| CN107674932B (en) * | 2017-09-05 | 2020-08-11 | 天津大学 | Efficient hot air generation method and device for metallurgy |
| CN109081144A (en) * | 2018-06-27 | 2018-12-25 | 林州市林丰铝电有限责任公司 | Aluminium powder bucket mentions dnockout Conveyance tank |
| CN110195133A (en) * | 2019-07-12 | 2019-09-03 | 河北科技大学 | A kind of converter slag treatment system and processing method |
| CN111394528A (en) * | 2020-04-30 | 2020-07-10 | 安徽工业大学 | Waste heat recovery system of high-temperature liquid slag |
| CN111394528B (en) * | 2020-04-30 | 2021-07-02 | 安徽工业大学 | Waste heat recovery system of high-temperature liquid slag |
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