CN201053005Y - Low-temperature pyrolysis combination producing device for furnace slag and coal powder - Google Patents
Low-temperature pyrolysis combination producing device for furnace slag and coal powder Download PDFInfo
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- CN201053005Y CN201053005Y CNU2007200662303U CN200720066230U CN201053005Y CN 201053005 Y CN201053005 Y CN 201053005Y CN U2007200662303 U CNU2007200662303 U CN U2007200662303U CN 200720066230 U CN200720066230 U CN 200720066230U CN 201053005 Y CN201053005 Y CN 201053005Y
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Abstract
The utility model discloses a slag and coal dust low-temperature pyrolysis combined production device ,which comprises a slag dry type granulating system, a coal drying and milling system, a coal dust pyrolysis system, a slag coke cooling and collecting system and a coal gas purifying and chemical product recovery system. The utility model can recover metallurgy slag sensible heat and uses the sensible heat to heat coal dust to complete low-temperature pyrolysis of coal, thereby producing semi coke powder, coal gas and liquid coal chemical product to create higher value; meanwhile, the problem of slag treatment is solved to improve the environment.
Description
Technical field
The utility model relates to the metallurgical comprehensive technology, more particularly, relates to a kind of slag and coal dust low temperature pyrogenation joint production.
Background technology
Ironmaking is an important step of Iron and Steel Production, generally adopt blast furnace to smelt iron production, in process of production, except that having a large amount of molten iron produce, also have a large amount of high-temperature slags to produce simultaneously, high-temperature slag is used to produce cement after with water cooling or abandons as solid waste.In order to reduce the blast-furnace coke consumption, in blast furnace, spray into coal dust usually.The high-temperature slag that present blast furnace ironmaking production is produced, its a large amount of sensible heats have been wasted, and environment is polluted; Directly spraying into coal dust in blast furnace acts as a fuel the composition of high value in the coal dust and has burnt.And the processing of high-temperature slag and breeze blowing carry out respectively.
Known coal low temperature pyrogenation device is independent system, adopt hot semi-coke powder to return or semi-coke powder burning after the heat ash heating coal dust low temperature pyrogenation that carries out coal produce semi-coke powder, coal gas and liquid coal Chemicals.
The low temperature pyrogenation device of the coal of now having seen has two kinds, respectively as depicted in figs. 1 and 2.
Fig. 1 is the low temperature pyrogenation device of the coal of first kind of mode, is by the recoverable coal low temperature pyrogenation of hot semi-coke powder device (DG skilled industry testing apparatus).Raw coal is fractured in the following coal dust charging feed of the 6mm coal storage tank 101, and by worm conveyor it is transferred to dry riser tube 102, and the hot flue gas that is come out by strainer 109 is the coal dust drying then, and then is transported in the dry coal storage tank 103.Hot semi-coke powder in the hot semicoke storage tank 107 enters in the mixing tank 104, the coal dust of the particle diameter≤6mm that discharges with dry coal storage tank 103 mixes, enter reactor 105 then and carry out the reaction of low temperature fast pyrogenation, produce hot semicoke and coal gas, wherein the portion of hot semi-coke powder turns back in the hot semicoke storage tank 107 as the thermal source that carries out pulverized coal pyrolysis once more by heating riser tube 106.The hot flue gas that hot semi-coke powder promotes usefulness is by fire coal generations of burn in fluidized bed combustion stove 108, heats riser tube 106 through entering after filter 109 filtrations.Contain materials such as tar and ammonia in the coal gas that produces, separate through sluicing pipe 110, gas-liquid separator 111, tar ammonia separator 112, cool off through coal gas inter cooler 113, machine removes tar device 114 and removes tar again, finishes gas purification after 115 desulfurization of desulfurization case and changes the product recovery.Gas blower 116 is used for air blast.This device need be provided with 108 pairs of semi-coke powders of fluidized bed combustion stove and heat, and consumes a large amount of fuel, simultaneously, because the circulation repeatedly of semi-coke powder heating causes the semi-coke powder ash content higher relatively.
Being described as follows of each Reference numeral among Fig. 1:
101 feed coal storage tanks, 102 dry riser tubes, 103 dry coal storage tanks, 104 mixing tanks, 105 reactors, 106 heating riser tubes, 107 hot semicoke storage tanks, 108 fluidized bed combustion stoves, 109 strainers, 110 scrubber tubes, 111 gas-liquid separators, 112 tar ammonia separators, 113 coal gas inter coolers, 114 machines remove tar device, 115 desulfurization casees, 116 gas blowers.
Because the recoverable coal low temperature pyrogenation of the described hot semi-coke powder of Fig. 1 device is a kind of known devices, so those skilled in the art knows for its basic functional principle and structure.So the device that does not relate in the top description just has been not described in detail.
Fig. 2 is the low temperature pyrogenation device of the coal of the second way, is the downlink cycle fluidized-bed integrated system coal dust low temperature pyrogenation device of heat ash heating.The heat ash heating coal dust that this device utilizes circular fluid bed to produce carries out the fast pyrogenation of coal dust, produces coal gas and liquid Coal Chemical Industry product (coal tar), and the semi-coke powder that is produced turns back to the circular fluid bed internal combustion.Its technical process is: the coke powder back of burning in circular fluid bed 201 forms the heat ash, with flue gas enter cyclonic separator 202 carry out the gas ash content from, hot ash is discharged in the storage bunker 203 and stores.Coal dust after levigate enters in the raw coal kiln 211, and the flue gas that utilizes circular fluid bed to produce carries out drying.By screw feeder 210 and carrier gas (nitrogen) dried coal dust is sent into admittedly in the mixing tank 205, and mixed with heat ash that solid material valve 204 is discharged.Mixed coal dust and hot grey mixture are entered in the descending bed pyrolysis oven 206 by mixing tank 205 admittedly and carry out fast pyrogenation, and coal dust generates hot semicoke and coal gas, and enter and carry out in the quick disconnector 207 separating of hot semicoke and coal gas.Hot semi-coke powder after the separation is transported in the circular fluid bed 201 by carrier gas (nitrogen) and burns; Coal gas then enters quencher 209 and cools off, and the change products such as tar in the cooled coal gas are in a liquid state and separate from coal gas, concentrates in quencher 209 bottoms and reclaims, and coal gas is discharged from top.From principle of device, system is simpler, can be used to produce coal gas and liquid Coal Chemical Industry product, and still, a large amount of semi-coke powders can only self burn, and can not be used for other purposes, and product application is restricted.
Being described as follows of each Reference numeral among Fig. 2:
201 circular fluid beds, 202 cyclonic separators, 203 storage bunkers, 204 solid material valves, 205 are mixing tank, 206 descending pyrolysis ovens, 207 quick disconnectors, 208U valve, 209 quenchers, 210 screw feeders, 211 raw coal kilns admittedly.
Equally, the downlink cycle fluidized-bed integrated system coal dust low temperature pyrogenation device of the described heat ash of Fig. 2 heating also is a kind of known devices, so those skilled in the art knows for its basic functional principle and structure.So the device that does not relate in the top description just has been not described in detail.
In general, above-mentioned two kinds of coal dust low temperature pyrogenation devices have the following disadvantages:
1) consume a large amount of fuel, simultaneously, because the circulation repeatedly of semi-coke powder heating causes the semi-coke powder ash content higher relatively.
2) a large amount of semi-coke powders can only self burn, and can not be used for other purposes, and product application is restricted.
So, just need a kind of new slag and coal dust low temperature pyrogenation device.
The utility model content
The purpose of this utility model is to reclaim the metallurgical slag sensible heat, and sensible heat is used to heat coal dust carries out the coal low temperature pyrogenation.
The utility model provides a kind of slag and coal dust low temperature pyrogenation joint production, and this device comprises:
Slag dry type granulation system comprises: with liquid high temperature furnace slag be processed into slag particle the slag pelletizer, be connected to this slag pelletizer and be blown into carrier gas gas blower, be connected to this slag pelletizer heat grain slag storage tank, be connected to the grain slag transfer roller and the fly-ash separator of this heat grain slag storage tank;
Coal drying and pulverized coal preparation system comprise the conveyor, former coal dryer, feeder, coal pulverizer, coal collector and the coal dust blow-off valve that connect successively; Also comprise producing steam and interchanger that links to each other and the drum of collecting steam, wherein this drum is also connected to described former coal dryer; Also comprise condensate tank and water circulating pump that water cycle is provided, described condensate tank links to each other with described former coal dryer, interchanger and drum with water circulating pump; Also be connected with the first nitrogen circulation blower fan between this coal pulverizer and the coal collector; This coal drying and pulverized coal preparation system also comprise exhaust blower and aiutage, are connected to described former coal dryer;
The pulverized coal pyrolysis system comprises: the mixing tank of mixed coal powder and grain slag, and this mixing tank connects a described coal dust blow-off valve and a slag transfer roller, is connected to the mixing blow-off valve that described mixing tank provides the reactor of pyrolytic reaction and is connected described reactor;
The burnt cooling of slag gathering system, comprise: the burnt tripping device of slag that is connected to described mixing blow-off valve, the coke powder collector of Lian Jieing, coke powder storehouse and coke powder blow-off valve successively, wherein said coke powder collector links to each other by the burnt tripping device of the second nitrogen circulation blower fan and slag, and the cold slag particle blow-off valve that links to each other successively, cold grain slag chute and final blow-off valve, wherein said cold slag particle blow-off valve links to each other with the burnt tripping device of slag;
Gas purification and change the product recovery system is connected to described pulverized coal pyrolysis system, is also connected to tank car or the pipeline of delivering to the user.
According to an embodiment of the present utility model, the granularity≤0.6mm of described coal dust, the granularity of slag particle is 3～5mm.
The utility model is by carrying out the dry type granulation to metallurgical slag, and employing carrier gas (nitrogen) is cooled to 850 ℃ with 1500 ℃ high temperature furnace slag, and grain slag and coal dust Direct Contact Heating coal dust carry out the low temperature fast pyrogenation to coal dust then.The carrier gas temperature that has absorbed high temperature furnace slag part sensible heat is increased to 500-600 ℃, is used for the drying and the preheating of coal dust.Therefore, the sensible heat of high temperature furnace slag is by effective recycling.The semi-coke powder that coal dust low temperature fast pyrogenation obtains can be used for fuel used to generate electricity and blast furnace blowing fuel; Coal gas and liquid Coal Chemical Industry product (coal tar) can further purify and deep processing, and the utility model can reclaim the metallurgical slag sensible heat, and sensible heat is used to heat coal dust carries out the coal low temperature pyrogenation, produce semi-coke powder, coal gas and liquid Coal Chemical Industry product.Utilize the favourable condition of Steel Complex, on the spot product is used and deep processing, create higher value.Simultaneously, solve the handling problem of slag, improve environment.
Description of drawings
In the present invention, identical Reference numeral is represented identical feature all the time, wherein,
Fig. 1 is the structure and the principle of work synoptic diagram of the recoverable coal low temperature pyrogenation of hot semi-coke powder of the prior art device;
Fig. 2 is the structure and the principle of work synoptic diagram of the downlink cycle fluidized-bed integrated system coal dust low temperature pyrogenation device of heat ash heating in the prior art;
Fig. 3 is structure and the principle of work synoptic diagram according to slag of the present utility model and coal dust low temperature pyrogenation joint production.
Embodiment
Further describe the technical solution of the utility model below in conjunction with drawings and Examples.
The utility model provides a kind of slag and coal dust low temperature pyrogenation joint production, and this device comprises:
Slag dry type granulation system comprises slag pelletizer, heat grain slag storage tank, grain slag transfer roller, gas blower and fly-ash separator; Liquid high temperature furnace slag by certain flow from entering the slag pelletizer, granulation wheel/dish or pressurized air by the rotation of slag pelletizer high speed are processed into slag particle, by gas blower a part of carrier gas is blown into the slag pelletizer, the high temperature slag particle is cooled off by carrier gas, and the solid granulates shape slag particle after obtaining to lower the temperature is stored in the heat grain slag storage tank and by grain slag conveyor delivery; Fly-ash separator is discharged thin ground-slag; Carrier gas after obtaining simultaneously to heat;
Coal drying and pulverized coal preparation system comprise conveyor, former coal dryer, feeder, coal pulverizer, the first nitrogen circulation blower fan, coal collector, coal dust blow-off valve, interchanger, condensate tank, water circulating pump, drum, exhaust blower, aiutage; Carrier gas after heating enters interchanger and water to be carried out heat exchange and produces steam, and steam comes together in drum, and is transported to former coal dryer and is used for heating raw coal and carries out the raw coal drying; Low temperature carrier gas after the heat exchange that water vapor that dry raw coal is produced and interchanger come out converges, and drains into atmosphere by exhaust blower through aiutage, and agglomerative water is realized the recycle of water by condensate tank and recirculated water blowback interchanger; Raw coal is sent into former coal dryer by conveyor and is carried out drying, and dried raw coal is transported to by feeder and wears into coal dust in the coal pulverizer, and the circulating nitrogen gas of being sent by the first nitrogen circulation blower fan is brought into coal collector with coal dust and collects; Coal dust discharges through the coal dust blow-off valve;
The pulverized coal pyrolysis system comprises mixing tank, reactor and mixing blow-off valve; The slag particle that the coal dust of coal dust blow-off valve discharging is discharged to mixing tank and grain slag transfer roller mixes mutually, mixed slag, coal mixtures enter reactor, the heat of the slag particle that temperature is higher is directly passed to the lower coal dust of temperature, after being heated, coal dust begins to take place the fast pyrogenation reaction, pulverized coal pyrolysis generates semi-coke powder and raw gas, discharges by mixing blow-off valve;
The burnt cooling of slag gathering system comprises the burnt tripping device of slag, cold slag particle blow-off valve, coke powder collector, coke powder storehouse, coke powder blow-off valve, the second nitrogen circulation blower fan, cold grain slag chute and final blow-off valve; Mixing blow-off valve discharges and is the semi-coke powder that mixes shape and slag particle and enters the burnt tripping device of slag and carry out slag Jiao and separate and cool off, semi-coke powder is brought the coke powder collector into by the nitrogen of second nitrogen circulation blower fan output and is collected, and is stored in the coke powder storehouse and by the coke powder blow-off valve and discharges; Cold grain slag drains into cold grain slag chute by cold slag particle blow-off valve, and is regularly discharged by final blow-off valve;
Gas purification and change the product recovery system, the raw gas that pulverized coal pyrolysis generates are directly delivered to the user by tank car or pipeline after entering gas purification and change the product recovery system and carrying out udst separation, cooling, gas-liquid separation, remove tar, desulfurization.
According to an embodiment, described carrier gas is a freezing air.After circulating nitrogen gas had absorbed the heat of semi-coke powder and warm sludge grain, hot nitrogen was drawn into it in interchanger by the second nitrogen circulation blower fan and carries out heat exchange with water, reclaimed the circulating nitrogen gas heat, then, turned back to the burnt tripping device of slag once more and carried out burnt separation of slag and cooling.
The temperature of high temperature furnace slag is 1500 ℃, and the temperature of the solid granular slag particle after the cooling is 850 ℃, and the carrier gas temperature after heating is 500 ℃-600 ℃.Granularity≤the 0.6mm of coal dust, the granularity of slag particle is 3～5mm.
With reference to figure 3, Fig. 3 is structure and the principle of work synoptic diagram according to slag of the present utility model and coal dust low temperature pyrogenation joint production.This device is made up of metallurgical cinder dry type granulation system, coal drying and pulverized coal preparation system, pyrolysis of coal system, slag burnt cooling gathering system and gas purification and change product recovery system.Wherein,
Metallurgical cinder dry type granulation system 301 comprises slag pelletizer 1, heat grain slag storage tank 2, grain slag transfer roller 14, gas blower 24, fly-ash separator 25;
Coal drying and pulverized coal preparation system 302 comprise conveyor 21, former coal dryer 3, feeder 4, coal pulverizer 5, nitrogen circulation blower fan 17, coal collector 6, coal dust blow-off valve 7, interchanger 23, condensate tank 15, water circulating pump 29, interchanger 30, drum 31, exhaust blower 20, aiutage 22;
Pyrolysis of coal system 303 comprises mixing tank 8, reactor 9, mixes blow-off valve 10;
The burnt cooling of slag gathering system 304: the burnt tripping device 11 of slag, cold slag particle blow-off valve 12, coke powder collector 16, coke powder storehouse 18, coke powder blow-off valve 19, the second nitrogen circulation blower fan 13, cold grain slag chute 27, final blow-off valve 28;
Gas purification and change product recovery system 305 comprise gas purification and change product recovery system 26.
Whole device is from the granulation of pyrometallurgy slag, about 1500 ℃ liquid high temperature furnace slag of being discharged by blast furnace, converter or electric furnace enters slag pelletizer 1 by certain flow from top, granulation wheel/the dish or the pressurized air that are rotated by the device high speed are processed into the slag particle that particle diameter is 3～5mm, by gas blower 24 a part of carrier gas (freezing air) is blown into slag pelletizer 1 by the bottom, the high temperature slag particle is cooled off by carrier gas, the high temperature slag particle is cooled to about 850 ℃, is the solid granulates shape; The thin ground-slag that fly-ash separator 25 is discharged is drained into cold grain slag chute 27; Carrier gas (freezing air) temperature that has absorbed high temperature slag particle heat is increased to 500-600 ℃, is admitted to interchanger 23 and carries out heat exchange with water and produce steam, and steam comes together in drum 31, and is transported to former coal dryer 3 and is used for heating raw coal and carries out the raw coal drying.Cryogenic air after the heat exchange that water vapour that dry raw coal is produced and interchanger 23 come out is converged, and drains into atmosphere by exhaust blower 20 through aiutage 22.And agglomerative water is realized the recycle of water by condensate tank 15 and 29 times interchanger of water circulating pump.
Raw coal is sent into former coal dryer 3 by conveyor 21 and is carried out drying, and dried raw coal is transported in the coal pulverizer 5 by feeder 4 and wears into coal dust, and the circulating nitrogen gas that is come out by nitrogen circulation blower fan 17 is brought into coal collector 6 with coal dust and collects.Coal dust is disposed to mixing tank 8 through coal dust blow-off valve 7 to be mixed mutually with 850 ℃ of slag particles that grain slag transfer roller 14 is discharged.Mixed slag, coal mixtures enter reactor 9, the heat of high temperature slag particle is directly passed to the lower coal dust of temperature, after being heated, coal dust begins to take place the fast pyrogenation reaction, pulverized coal pyrolysis generates semi-coke powder and raw gas, is the semi-coke powder that mixes shape and slag particle then and enters slag, burnt tripping device 11 and carry out slag Jiao and separate and cool off by mixing blow-off valve 10.The nitrogen that semi-coke powder is come out by the second nitrogen circulation blower fan 13 is brought coke powder collector 16 into and is collected; Cold grain slag drains into cold grain slag chute 27 by cold slag particle blow-off valve 12, and is regularly discharged by final blow-off valve 28.
After circulating nitrogen gas has absorbed the heat of semi-coke powder and warm sludge grain, hot nitrogen is drawn into it in interchanger 30 by the second nitrogen circulation blower fan 13 and carries out heat exchange with water, reclaim the circulating nitrogen gas heat, then, turn back to the burnt tripping device 11 of slag once more and carry out burnt separation of slag and cooling.
The raw gas that pulverized coal pyrolysis generates is directly delivered to the user by tank car or pipeline after entering gas purification and change product recovery system 26 and carrying out udst separation, cooling, gas-liquid separation, remove tar, desulfurization.Gaseous chemical substance in the raw gas is transformed into the liquid product centralized collection.
Being described as follows of each Reference numeral among Fig. 3:
1 slag pelletizer; A 2 heat slag storage tank; 3 former coal dryers; 4 feeders; 5 coal pulverizers; 6 coal collectors; 7 blow-off valves; 8 mixing tanks; 9 reactors; 10 blow-off valves; The burnt tripping device of 11 slags; 12 blow-off valves; 13 nitrogen circulation blower fans; 14 high temperature grain slag transfer rollers; 15 condensate tanks; 16 coke powder collectors; 17 nitrogen circulation blower fans; 18 coke powder storehouses; 19 blow-off valves; 20 exhaust blowers; 21 conveyors; 22 aiutages; 23 interchanger; 24 gas blowers; 25 fly-ash separators; 26 gas purifications and change product recovery system; 27 cold slag chutes; 28 blow-off valves; 29 water circulating pumps; 30 interchanger; 31 drums.
The utlity model has following technical characterstic: utilize the metallurgical slag sensible heat to use as the coal dust destructive distillation Thermal source reclaims sensible heat by the metallurgical slag dry granulation, and take hot grain slag as heating carrier, carries out Coal fast pyrogenation gas processed and production semi-coke powder. Whole apparatus system is unit autonomous system processed, adopts lower The row recirculating fluidized bed is as coal dust destructive distillation agent set, and coal dust directly mixes contact heat-exchanging with hot grain slag Carry out destructive distillation, simultaneously, set up a slag and semi-coke powder separation equipment, gas purification, carrier gas dedusting, former The equipment such as coal drying. System adopts atmospheric operation, and is safe and reliable, has the metallurgical production of combining closely dress Put and the energy-conserving and environment-protective characteristics. This device has Fast Heating, fast separation, fast cooling, heat exchange The advantage such as efficient height, coal dust burn out rate are low.
Its characteristics are as follows: mild condition, device advantages of simple; Unit autonomous system processed, production capacity High; Heating, separation, cooling velocity are fast; Active principle conversion ratio height in the coal; The coal dust burn out rate is low, Personal energy consumption is low; Equipment is simple, and is safe and reliable; Take fine coal as raw material, the feed coal wide adaptability, brown Coal, long bituminous coal, weakly caking coal or dross coal can be processed. Take hot grain slag as heating carrier and coal dust Directly mix contact heat-exchanging, heat exchange efficiency height; Normal pressure is produced, and does not need pure oxygen. Cold conditions grain slag exploitation value Value is high; Gas purification can directly be used; The tar yield height; The calorific value of gas height; Multiple product simultaneously Produce.
Effect of the present utility model is as follows: use device of the present utility model, can solve pyrometallurgy Slag treatment, sensible heat reclaims, and improves the additional of steel plant's pulverized coal injection into blast furna and thermal power plant bunker coal Value, and provide coal gas and Coal Chemical Industry product in short supply for steel mill. This installs main effect and comprises: adopt (1) As thermal source, coal dust low temperature fast pyrogenation production semi-coke powder, coal both can have been realized with the pyrometallurgy slag Gas and liquid Coal Chemical Industry product simultaneously, are recycled the sensible heat of pyrometallurgy slag. (2) has height The granulation of temperature metallurgical cinder, coal dust low temperature fast pyrogenation are produced semi-coke powder, are produced coal gas and liquid coalification The multiple functions such as chemical product. (3) adopting dry type high speed granulating wheel/dish device to process liquid pyrometallurgy melts Slag, the slag particle epigranular after the processing, using value height. (4) as grain slag, the semi-coke powder of its product, Coal gas and liquid Coal Chemical Industry product utilize and further deep processing easily. (5) adopt high temperature grain slag and coal dust The direct contact heat transfer mode, thermal efficiency height is difficult for cohering, and has semi-coke powder, coal gas and liquid coalification The chemical product quality is good, the productive rate high. (6) the grain slag adopts nitrogen to follow with the cooling of semi-coke powder with separating The circulation mode, cooling and good separating effect, safe. (7) utilize the sensible heat of pyrometallurgy slag Carry out coal dust low temperature fast pyrogenation, and gas-to-gas heat exchanger is set to heat grain slag and semi-coke powder sensible heat recovery usefulness In the raw coal drying, therefore, the system synthesis energy consumption is low. (8) dedusting and desulphurization plant are set, the feature of environmental protection is good.
Claims (2)
1. slag and coal dust low temperature pyrogenation joint production is characterized in that this device comprises:
Slag dry type granulation system comprises: with liquid high temperature furnace slag be processed into slag particle the slag pelletizer, be connected to this slag pelletizer and be blown into carrier gas gas blower, be connected to this slag pelletizer heat grain slag storage tank, be connected to the grain slag transfer roller and the fly-ash separator of this heat grain slag storage tank;
Coal drying and pulverized coal preparation system comprise the conveyor, former coal dryer, feeder, coal pulverizer, coal collector and the coal dust blow-off valve that connect successively; Also comprise producing steam and interchanger that links to each other and the drum of collecting steam, wherein this drum is also connected to described former coal dryer; Also comprise condensate tank and water circulating pump that water cycle is provided, described condensate tank links to each other with described former coal dryer, interchanger and drum with water circulating pump; Also be connected with the first nitrogen circulation blower fan between this coal pulverizer and the coal collector; This coal drying and pulverized coal preparation system also comprise exhaust blower and aiutage, are connected to described former coal dryer;
The pulverized coal pyrolysis system comprises: the mixing tank of mixed coal powder and grain slag, and this mixing tank connects a described coal dust blow-off valve and a slag transfer roller, is connected to the mixing blow-off valve that described mixing tank provides the reactor of pyrolytic reaction and is connected described reactor;
The burnt cooling of slag gathering system, comprise: the burnt tripping device of slag that is connected to described mixing blow-off valve, the coke powder collector of Lian Jieing, coke powder storehouse and coke powder blow-off valve successively, wherein said coke powder collector links to each other by the burnt tripping device of the second nitrogen circulation blower fan and slag, and the cold slag particle blow-off valve that links to each other successively, cold grain slag chute and final blow-off valve, wherein said cold slag particle blow-off valve links to each other with the burnt tripping device of slag;
Gas purification and change the product recovery system is connected to described pulverized coal pyrolysis system, is also connected to tank car or the pipeline of delivering to the user.
2. slag as claimed in claim 1 and coal dust low temperature pyrogenation joint production is characterized in that, the granularity≤0.6mm of described coal dust, and the granularity of slag particle is 3～5mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2007200662303U CN201053005Y (en) | 2007-01-11 | 2007-01-11 | Low-temperature pyrolysis combination producing device for furnace slag and coal powder |
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| CNU2007200662303U CN201053005Y (en) | 2007-01-11 | 2007-01-11 | Low-temperature pyrolysis combination producing device for furnace slag and coal powder |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103451332A (en) * | 2013-08-30 | 2013-12-18 | 陕西煤业化工技术研究院有限责任公司 | System and method for carrying out blast furnace ironmaking by using small-particle-size bituminous coals |
| CN110195139A (en) * | 2019-06-04 | 2019-09-03 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of iron ore low-temperature reduction-room temperature slag iron separation-electric arc steel making process |
| CN114057371A (en) * | 2020-07-31 | 2022-02-18 | 宝山钢铁股份有限公司 | Sludge drying treatment method based on particle heat source |
| CN114057372A (en) * | 2020-07-31 | 2022-02-18 | 宝山钢铁股份有限公司 | Roller residue heat drying method for organic sludge |
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2007
- 2007-01-11 CN CNU2007200662303U patent/CN201053005Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103451332A (en) * | 2013-08-30 | 2013-12-18 | 陕西煤业化工技术研究院有限责任公司 | System and method for carrying out blast furnace ironmaking by using small-particle-size bituminous coals |
| CN110195139A (en) * | 2019-06-04 | 2019-09-03 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of iron ore low-temperature reduction-room temperature slag iron separation-electric arc steel making process |
| CN110195139B (en) * | 2019-06-04 | 2021-06-08 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Iron ore low-temperature reduction-normal-temperature slag-iron separation-electric furnace steel making process |
| CN114057371A (en) * | 2020-07-31 | 2022-02-18 | 宝山钢铁股份有限公司 | Sludge drying treatment method based on particle heat source |
| CN114057372A (en) * | 2020-07-31 | 2022-02-18 | 宝山钢铁股份有限公司 | Roller residue heat drying method for organic sludge |
| CN114057371B (en) * | 2020-07-31 | 2023-11-14 | 宝山钢铁股份有限公司 | Sludge drying treatment method based on particle heat source |
| CN114057372B (en) * | 2020-07-31 | 2023-11-14 | 宝山钢铁股份有限公司 | Roller slag waste heat drying method for organic sludge |
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