CN206266677U - The system of middle low-order coal sub-prime cascade utilization - Google Patents
The system of middle low-order coal sub-prime cascade utilization Download PDFInfo
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- CN206266677U CN206266677U CN201621312946.2U CN201621312946U CN206266677U CN 206266677 U CN206266677 U CN 206266677U CN 201621312946 U CN201621312946 U CN 201621312946U CN 206266677 U CN206266677 U CN 206266677U
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Abstract
The utility model discloses the system of middle low-order coal sub-prime cascade utilization, including：Middle low-order coal breaker, mixed-forming device, pyrolysis smelting furnace and molten point of stove, wherein, there is mixed-forming device middle low order coal powder entrance, entrance containing Iron Ore Powder and material pelletizing to export；Pyrolysis smelting furnace has body, and body is interior to be in turn divided into feed zone, pyrolysis zone, smelts area and discharge zone in the horizontal direction, wherein, feed zone has material pelletizing entrance；Heating element heater is provided with pyrolysis zone, pyrolysis zone is provided with pyrolysis oil gas vent on the roof of feed zone；Oxygen-containing gas spray umbrella is provided with the perisporium for smelting area；There is metallized pellet to export for discharge zone, and metallized pellet outlet is connected with spiral discharging machine；A molten point stove has metallized pellet entrance, molten iron outlet and tailings to export, and metallized pellet entrance is connected with spiral discharging machine.The sub-prime cascade utilization of low-order coal in being realized using the system.
Description
Technical field
The utility model belongs to chemical technology field, and specifically, the utility model is related to middle low-order coal sub-prime step profit
System.
Background technology
China's energy resource structure feature is " few gas rich in coal and poor in oil ", and endowment of resources present situation determines that China has to develop coalification
Work, to realize obtaining chemical products by coal head, realizes substituting the part of oil and natural gas, to ensure China's economic development
And energy security.Meanwhile, China's economic development needs a large amount of steels produce steel more than China using blast furnace ironmaking mode, and high
Stove ironmaking produces substantial amounts of Iron Ore Powder, wherein containing valuable metals such as zinc, iron, directly storing up and not only causing the wasting of resources and dirt
Dye environment, it is difficult to process.
Utility model content
The utility model is intended at least solve to a certain extent one of technical problem in correlation technique.Therefore, this reality
It is the system of low-order coal sub-prime cascade utilization in proposing, low-order coal in being realized using the system with a new purpose
Sub-prime cascade utilization.
According to one side of the present utility model, it is the utility model proposes a kind of middle low-order coal sub-prime cascade utilization
System, including：
There is middle low-order coal breaker, the middle low-order coal breaker middle low-order coal entrance and middle low order coal dust to go out
Mouthful；
Ferrous material breaker, the ferrous material breaker has ferrous material entrance and is exported containing Iron Ore Powder；
Mixed-forming device, the mixed-forming device has middle low order coal powder entrance, entrance containing Iron Ore Powder and material ball
Group's outlet, the middle low order coal powder entrance is connected with the middle low order discharge, the entrance containing Iron Ore Powder and the iron content
Miberal powder outlet is connected,
Pyrolysis smelting furnace, the pyrolysis smelting furnace has a body, be in turn divided into the horizontal direction in the body into
Material area, pyrolysis zone and smelting area and discharge zone, wherein,
The feed zone has material pelletizing entrance；
Heating element heater is provided with the pyrolysis zone, the pyrolysis zone is provided with pyrolysis on the roof of the feed zone
Oil gas vent, the pyrolysis zone is suitable to middle low order coal dust generation pyrolysis and obtains pyrolytic carbon and produce pyrolysis oil gas；
Oxygen-containing gas spray umbrella is provided with the perisporium in the smelting area, umbrella is sprayed to the smelting area by the oxygen-containing gas
Oxygen-containing gas is sprayed into, imperfect combustion heat release occurs and the gas rich in carbon monoxide is produced, the material pelletizing is occurred also
Original reaction obtains metallized pellet；
There is metallized pellet to export for the discharge zone, and the metallized pellet outlet is connected with spiral discharging machine, described
Material pelletizing entrance is connected with material pelletizing outlet；
Molten point of stove, the molten point stove has metallized pellet entrance, molten iron outlet and tailings to export, the metallized pellet
Entrance is connected with metallized pellet outlet.
By the system of the middle low-order coal sub-prime cascade utilization using the utility model above-described embodiment, first by middle low order
It is pyrolyzed in the pyrolysis zone of pyrolysis smelting furnace after coal dust and the blended shaping of Iron Ore Powder, so that using the strong heat conduction of Iron Ore Powder
Property, the pyrolysis efficiency of low order coal dust in raising obtains the petroleum resources of high added value.Further, low order coal dust heat in utilization
Metallized pellet obtained and reduction reaction in the smelting area of pyrolysis smelting furnace with Iron Ore Powder again in the pyrolytic carbon obtained after solution there is.By
This, by the system of the middle low-order coal sub-prime cascade utilization using the utility model above-described embodiment, can be entered with centering low-order coal
Row sub-prime cascade utilization, and then the petroleum resources of high added value is obtained, while realizing effective treatment of Iron Ore Powder.
Brief description of the drawings
Fig. 1 is the structural representation of the system of the middle low-order coal sub-prime cascade utilization according to the utility model one embodiment
Figure.
Fig. 2 is the system sub-prime cascade utilization using the middle low-order coal sub-prime cascade utilization of the utility model one embodiment
The flow chart of the method for middle low-order coal.
Specific embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein ad initio
Same or similar element or element with same or like function are represented to same or similar label eventually.Below by ginseng
The embodiment for examining Description of Drawings is exemplary, it is intended to for explaining the utility model, and it is not intended that to the utility model
Limitation.
According to one side of the present utility model, it is the utility model proposes a kind of middle low-order coal sub-prime cascade utilization
System.The system for describing the middle low-order coal sub-prime cascade utilization according to the utility model specific embodiment in detail below with reference to Fig. 1, should
System includes：Middle low-order coal breaker 100, the mixed-forming device 300 of ferrous material breaker 200, pyrolysis smelting furnace 400
With molten point of stove 500.
Wherein, middle low-order coal breaker 100 has middle low-order coal entrance 110 and middle low order discharge 120；Chalybeate
Material breaker 200 has ferrous material entrance 210 and containing Iron Ore Powder outlet 220；Mixed-forming device 300 has middle low-order coal
Powder entrance 310, entrance containing Iron Ore Powder 320 and material pelletizing outlet 330, middle low order coal powder entrance 310 and middle low order discharge
120 are connected, and entrance containing Iron Ore Powder 320 is connected with containing Iron Ore Powder outlet 220；Pyrolysis smelting furnace 400 has body 410, in body
Feed zone 420, pyrolysis zone 430 are in turn divided into the horizontal direction and smelt area 440 and discharge zone 450, wherein, feed zone
420 have material pelletizing entrance 421, and material pelletizing entrance 421 is connected with material pelletizing outlet 330；It is provided with pyrolysis zone 430
Heating element heater 431, pyrolysis zone 430 is provided with pyrolysis oil gas vent 432 on the roof of feed zone 420, and pyrolysis zone 430 is suitable to
There is pyrolysis and obtain pyrolytic carbon and produce pyrolysis oil gas in middle low order coal dust；Oxygen-containing gas spray is provided with the perisporium for smelting area 440
Umbrella 441, sprays umbrella 441 and sprays into oxygen-containing gas to area 440 is smelted by oxygen-containing gas, imperfect combustion heat release occurs and generation is rich in
The gas of carbon monoxide, makes material pelletizing that reduction reaction to occur and obtains metallized pellet；Discharge zone 450 goes out with metallized pellet
Mouth 451, metallized pellet outlet 451 is connected with spiral discharging machine 460；Molten point of stove 500 has metallized pellet entrance 510, iron
Water out 520 and tailings outlet 530, metallized pellet entrance 510 is connected with spiral discharging machine 460.
By the system of the middle low-order coal sub-prime cascade utilization using the utility model above-described embodiment, first by middle low order
It is pyrolyzed in the pyrolysis zone of pyrolysis smelting furnace after coal dust and the blended shaping of Iron Ore Powder, so that using the strong heat conduction of Iron Ore Powder
Property, the pyrolysis efficiency of low order coal dust in raising obtains the petroleum resources of high added value.Further, low order coal dust heat in utilization
Metallized pellet obtained and reduction reaction in the smelting area of pyrolysis smelting furnace with Iron Ore Powder again in the pyrolytic carbon obtained after solution there is.By
This, by the system of the middle low-order coal sub-prime cascade utilization using the utility model above-described embodiment, can be entered with centering low-order coal
Row sub-prime cascade utilization, and then the petroleum resources of high added value is obtained, while realizing effective treatment of Iron Ore Powder.
According to specific embodiment of the utility model, the middle low-order coal of the utility model specific embodiment is described below in detail
The system of sub-prime cascade utilization.
Middle low-order coal breaker 100
According to specific embodiment of the utility model, middle low-order coal breaker 100 has middle low-order coal entrance 110 with
Low order discharge 120.Thus the centering low-order coal of low-order coal breaker 100 carries out break process in, in obtaining
Low order coal dust.It is possible thereby to be easy to subsequently be well mixed with Iron Ore Powder, the contact area of the two is improved, and then improve follow-up iron ore
The metallurgical effect of powder.
Ferrous material breaker 200
According to specific embodiment of the utility model, ferrous material breaker 200 has ferrous material entrance 210 and contains
Iron Ore Powder outlet 220.Thus using ferrous material breaker 200 pairs carry out break process containing Iron Ore Powder, to obtain iron content
Miberal powder.It is possible thereby to be easy to it is follow-up be well mixed with middle low order coal dust, improve the contact area of the two, and then improve follow-up iron ore
The metallurgical effect of powder.
Mixed-forming device 300
According to specific embodiment of the utility model, mixed-forming device 300 has middle low order coal powder entrance 310, iron content
Miberal powder entrance 320 and material pelletizing outlet 330, middle low order coal powder entrance 310 is connected with middle low order discharge 120, containing iron ore
Powder entrance 320 is connected with containing Iron Ore Powder outlet 220.Thus entered using the centering low order coal dust of mixed-forming device 300 and Iron Ore Powder
Row forming processes, to obtain material pelletizing.It is possible thereby to be easy to subsequently be pyrolyzed and metallurgy.
According to specific embodiment of the utility model, can by middle low order coal dust and containing Iron Ore Powder according to (1.45-1.85):
1 mass ratio carries out forming processes.Inventor's discovery, if middle low order coal dust addition is too low, can not provide original carbon containing enough
Material imperfect combustion heat release, it is impossible to provide enough heats, influences metallized pellet degree of metalization, if middle low order coal dust addition mistake
It is many, then waste is produced, increase system energy consumption.Obtained after can causing follow-up middle low order pyrolysis of coal from there through said ratio is used
Pyrolytic carbon fully can reduce containing Iron Ore Powder, and then improve metallized pellet degree of metalization.
Pyrolysis smelting furnace 400
According to specific embodiment of the utility model, pyrolysis smelting furnace 400 has in body 410, body in the horizontal direction
On be in turn divided into feed zone 420, solution area 430 and smelt area 440 and discharge zone 450.
Wherein, feed zone 420 has material pelletizing entrance 421, and material pelletizing entrance 421 exports 330 phases with material pelletizing
Even.It is possible thereby to the material pelletizing that middle low-order coal and Iron Ore Powder shaping are obtained is delivered into feed zone 420 by material pelletizing entrance 421
It is interior.
Heating element heater 431 is provided with pyrolysis zone 430, pyrolysis zone 430 is provided with pyrolysis on the roof of feed zone 420
Oil gas vent 432, pyrolysis zone 430 is suitable to middle low order coal dust generation pyrolysis and obtains pyrolytic carbon and produce pyrolysis oil gas.First, thing is made
There is pyrolysis in pyrolysis zone 430 and obtain pyrolytic carbon and pyrolysis oil gas can be produced in pellet group.Wherein it is mainly centering low-order coal to enter
Row pyrolysis, so as to obtain the petroleum resources of high added value, and causes in material pelletizing only remaining pyrolytic carbon and containing Iron Ore Powder.Enter
And can be in order to subsequently contain Iron Ore Powder further with pyrolytic carbon reduction.So as to the sub-prime cascade utilization of low-order coal in realizing.
According to specific embodiment of the utility model, Iron Ore Powder heat conductivility is better than coal.Therefore, in advance by middle low-order coal
It is pyrolyzed after carrying out mixed-forming with it, it is possible to use the heat transfer efficiency in the raising of Iron Ore Powder thermal conductivity in low order pyrolysis of coal,
And then promote and improve pyrolysis efficiency.
According to specific embodiment of the utility model, the temperature in pyrolysis zone can be 550-650 degrees Celsius；And material
The time that pelletizing is pyrolyzed in pyrolysis zone is 40-80 minutes.It is possible thereby to further improve in low-order coal pyrolysis efficiency,
The yield of the petroleum resources of high added value is improved simultaneously.
According to specific embodiment of the utility model, oxygen-containing gas spray umbrella 441 is provided with the perisporium for smelting area 440.By
This, material pelletizing enters smelting area after making pyrolysis, and sprays umbrella 441 to smelting area 440 penetrating oxygen-containing gas, thing by oxygen-containing gas
There is imperfect combustion heat release and produce the gas rich in carbon monoxide in the carbon in pellet group, be increased to for temperature of charge by heat release
1200-1300 degrees Celsius, in the carbon and gas in material pelletizing there is reduction reaction in CO with the oxide of iron, obtain the ball that metallizes
Group.The high-temperature flue gas containing part carbon monoxide produced in area are smelted simultaneously to be discharged by the oil gas vent for being arranged on pyrolysis zone.
Thus high-temperature tail gas continue and material pelletizing counter current contacting, heated material pelletizing, using high temperature cigarette during discharging out of the furnace
Gas sensible heat, the thermal efficiency of lifting pyrolysis smelting furnace.
Discharge zone 450 has metallized pellet outlet 451, and metallized pellet outlet 451 is connected with spiral discharging machine 460.
Thus, metallized pellet is made to enter discharge zone 450, using the metallized pellet in the discharge of spiral discharging machine 460 discharge zone.
According to specific embodiment of the utility model, the pressure in pyrolysis smelting furnace is 0.1-0.5KPa.Inventor's discovery,
Pyrolytic reaction is the increased reaction of gas, while temperature is higher in device, and has a large amount of combustibles, therefore by keep it is micro- just
Pressure, on the one hand advantageously ensures that the interior not air inlet of device, triggers security incident；On the other hand, entering for pyrolytic reaction is conducive to
OK.
Thus, dexterously with the hot method of oxygen be combined the reducing process of Iron Ore Powder by inventor, by penetrating in smelting area
Oxygen-containing gas (such as air or oxygen) so that the carbon and oxygen that generation is pyrolyzed in material pelletizing contact generation imperfect combustion and puts
There is reduction reaction, output metallized pellet in heat, heating pelletizing to reduction temperature.Therefore, by using above-mentioned pyrolysis smelting furnace
There is imperfect combustion heated material in the carbon that not only make use of middle low order pyrolysis of coal to produce, while there is imperfect combustion using charcoal
Generation CO raising reducing atmospheres, and then the reduction effect of Iron Ore Powder is significantly improved, improve the degree of metalization of metallized pellet.
Molten point of stove 500
According to specific embodiment of the utility model, melting point stove 500 has metallized pellet entrance 510, molten iron outlet 520
With tailings outlet 530, metallized pellet entrance 510 is connected with spiral discharging machine 460.Thus, by metallized pellet in molten point of stove
Molten office reason is inside carried out, to obtain molten iron and tailings.
The system for understanding the middle low-order coal sub-prime cascade utilization of the utility model above-described embodiment for convenience, below to profit
It is described with the method for low-order coal in the system sub-prime cascade utilization.It is specific the utility model to be described in detail below with reference to Fig. 2
The method of the middle low-order coal sub-prime cascade utilization of embodiment.
According to specific embodiment of the utility model, the method includes：Low-order coal breaker centering low-order coal in utilization
Break process is carried out, to obtain middle low order coal dust；Break process is carried out to ferrous material using ferrous material breaker, with
Just obtain containing Iron Ore Powder；Forming processes are carried out in mixed-forming device by middle low order coal dust and containing Iron Ore Powder, to obtain thing
Pellet group；Material pelletizing is delivered in pyrolysis smelting furnace, makes being pyrolyzed in pyrolysis zone in middle low-order coal in material pelletizing,
Produce pyrolysis oil gas and pyrolytic carbon；Material pelletizing enters smelting area after making pyrolysis, and oxygen-containing gas is passed through in area to smelting, and occurs not
The gas of complete combustion heat release and generation rich in carbon monoxide, makes material pelletizing that reduction reaction to occur, to obtain the ball that metallizes
Group；Metallized pellet is set to enter discharge zone, using the metallized pellet in spiral discharging machine discharge discharge zone；By metallized pellet
Molten office reason is carried out in molten point of stove, to obtain molten iron and tailings.
By the method for the middle low-order coal sub-prime cascade utilization using the utility model above-described embodiment, first by middle low order
Coal dust with containing being pyrolyzed in the pyrolysis zone of pyrolysis smelting furnace after the blended shaping of Iron Ore Powder so that using the strong heat conduction of Iron Ore Powder
Property, the pyrolysis efficiency of low order coal dust in raising obtains the petroleum resources of high added value.Further, low order coal dust heat in utilization
Metallized pellet obtained and reduction reaction in the smelting area of pyrolysis smelting furnace with Iron Ore Powder again in the pyrolytic carbon obtained after solution there is.By
This, by the method for the middle low-order coal sub-prime cascade utilization using the utility model above-described embodiment, can be entered with centering low-order coal
Row sub-prime cascade utilization, and then the petroleum resources of high added value is obtained, while realizing effective treatment of Iron Ore Powder.
S100：Middle low-order coal break process
According to specific embodiment of the utility model, low-order coal breaker centering low-order coal carries out broken place in
Reason, to obtain middle low order coal dust.It is possible thereby to be easy to subsequently be well mixed with Iron Ore Powder, the contact area of the two is improved, entered
And improve the metallurgical effect of follow-up Iron Ore Powder.
S200：Ferrous material break process
According to specific embodiment of the utility model, broken place is carried out to ferrous material using ferrous material breaker
Reason, to obtain containing Iron Ore Powder.It is possible thereby to be easy to it is follow-up be well mixed with middle low order coal dust, improve the contact area of the two,
And then improve the follow-up metallurgical effect containing Iron Ore Powder.
S300：Forming processes
According to specific embodiment of the utility model, carried out in mixed-forming device by middle low order coal dust and containing Iron Ore Powder
Forming processes, to obtain material pelletizing.It is possible thereby to be easy to subsequently be pyrolyzed and metallurgy.
According to specific embodiment of the utility model, can by middle low order coal dust and containing Iron Ore Powder according to (1.45-1.85):
1 mass ratio carries out forming processes.Inventor's discovery, if middle low order coal dust addition is too low, can not provide original carbon containing enough
Material imperfect combustion heat release, it is impossible to provide enough heats, influences metallized pellet degree of metalization, if middle low order coal dust addition mistake
It is many, then waste is produced, increase system energy consumption.Obtained after can causing follow-up middle low order pyrolysis of coal from there through said ratio is used
Pyrolytic carbon fully can reduce containing Iron Ore Powder, and then improve metallized pellet degree of metalization.
S400：Pyrolysis and metallurgy in pyrolysis smelting furnace
According to specific embodiment of the utility model, material pelletizing is delivered in pyrolysis smelting furnace, in making material pelletizing
There is pyrolysis in pyrolysis zone in middle low-order coal to obtain pyrolytic carbon and pyrolysis oil gas can be produced.So as to obtain the oil gas of high added value
Resource, and cause only remaining pyrolytic carbon and Iron Ore Powder in material pelletizing.And then can be in order to subsequently further with pyrolytic carbon
Reduced iron miberal powder.So as to the sub-prime cascade utilization of low-order coal in realizing.
According to specific embodiment of the utility model, Iron Ore Powder heat conductivility is better than coal.Therefore, in advance by middle low-order coal
It is pyrolyzed after carrying out mixed-forming with it, it is possible to use the heat transfer efficiency in the raising of Iron Ore Powder thermal conductivity in low order pyrolysis of coal,
And then promote and improve pyrolysis efficiency.
According to specific embodiment of the utility model, the temperature being pyrolyzed in pyrolysis zone can be 550-650 degrees Celsius,
Pyrolysis time can be 40-80 minutes.It is possible thereby to further improve in low-order coal pyrolysis efficiency, while improve high added value
Petroleum resources yield.
According to specific embodiment of the utility model, material pelletizing enters smelting area after making pyrolysis, is passed through in area to smelting
There is imperfect combustion heat release and produce the gas for being rich in carbon monoxide in oxygen-containing gas, carbon in material pelletizing, heat release is by material
Temperature is increased to 1200-1300 degrees Celsius, and CO occurs reduction reaction with the oxide of iron in the carbon and gas in material pelletizing, obtains
To metallized pellet.
According to specific embodiment of the utility model, the high-temperature flue gas containing part carbon monoxide of generation in area are being smelted
Discharged by the oil gas vent for being arranged on pyrolysis zone.Thus high-temperature tail gas continue inverse with material pelletizing during discharging out of the furnace
Stream contact, heated material pelletizing, using high-temperature flue gas sensible heat, the thermal efficiency of lifting pyrolysis smelting furnace.
According to specific embodiment of the utility model, metallized pellet is entered discharge zone, discharged using spiral discharging machine
Metallized pellet in discharge zone.
S500：Molten office reason
According to specific embodiment of the utility model, metallized pellet is carried out into molten office reason in molten point of stove, so as to
To molten iron and tailings.
Thus in the method for the middle low-order coal sub-prime cascade utilization of the utility model above-described embodiment, inventor dexterously will
The reducing process of Iron Ore Powder is combined with the hot method of oxygen, by penetrating oxygen-containing gas (such as air or oxygen) in area is smelted, making
The carbon of generation is pyrolyzed in material pelletizing contact generation imperfect combustion heat release with oxygen, heat pelletizing to reduction temperature, generation
Reduction reaction, output zinc-containing dust, remaining material continues to be heated up, and the CO in carbon and gas in material is jointly and iron
Oxide occur reduction reaction, output metallized pellet.Therefore, it is low in not only being make use of by the above-mentioned pyrolysis smelting furnace of use
There is imperfect combustion heated material in the carbon that rank pyrolysis of coal is produced, produce CO to improve reduction while there is imperfect combustion using charcoal
Atmosphere, and then the reduction effect of Iron Ore Powder is significantly improved, improve the degree of metalization of metallized pellet.
Embodiment
Middle low-rank coal：By taking the coal of somewhere as an example, its main character is shown in Table 1.
The raw coal constituent analysis of table 1
| Project | Unit | Numerical value | Remarks |
| Quan Shui | Wt% | 10.3 | As-received |
| Fixed carbon | Wt% | 54.3 | Butt |
| Volatile matter | Wt% | 36.1 | Butt |
| Ash content | Wt% | 9.6 | Butt |
Somewhere Iron Ore Powder, its main character is shown in Table 2.
The Iron Ore Powder constituent analysis of table 2
Heating element heater in pyrolysis zone：Radiant tube
Middle low-rank coal and iron ore are used into crusher in crushing respectively, then powder, raw material granularity is made using vertical mill
The mesh of ＜ 100.Middle low order coal dust and Iron Ore Powder are mixed, middle low order coal dust is suitably excessive, middle low order coal dust：Iron Ore Powder=
1.63:1.Extrusion forming in material feeding roller briquetting machine, obtains material pelletizing after mixing.Material pelletizing is sent into through conveying device
In pyrolysis smelting furnace, pyrolysis smelting furnace has pyrolysis zone and smelts area, is heated using radiant tube in pyrolysis zone, pyrolysis final temperature in stove
It it is 650 DEG C, raw material stops 55min in pyrolysis zone, material pelletizing is warming up to 650 DEG C in pyrolysis zone, and pyrolytic reaction, output occur
Pyrolysis oil gas heat simultaneously discharges out of the furnace through being opened in the oil gas vent near stove charging aperture, after the pyrolysis condensed purification separation of oil gas,
Pyrolysis gas feeding gas holder storage, pyrolysis oil is directly sold.The high-temperature material pelletizing of pyrolysis zone output is delivered to smelting on drapery panel
Refining area, smelt area top set oxygen-containing gas spray umbrella, to smelt area in spray into oxygen, 450m3/ t raw materials, in material pelletizing
Carbon contacts generation imperfect combustion reaction with oxygen and releases heat, and material pelletizing is gradually heating into 1250 DEG C or so, material ball
Carbon in group reduces ferriferous oxide therein, output metallized pellet.Tail of the rich, high temperature of carbon imperfect combustion output containing CO
Gas, is discharged out of the furnace via the oil gas vent near pyrolysis smelting furnace charging aperture, and gas holder storage, high temperature tail are delivered to after purified condensation
Gas continues and solid material counter current contacting during discharging out of the furnace, and heats solid material, using high-temperature tail gas sensible heat, carries
Rise the thermal efficiency of pyrolysis smelting furnace.By the metallized pellet of pyrolysis smelting furnace output, in molten point of stove of feeding combustion gas, it is heated to
1500 DEG C, slag sluicing system is carried out, molten iron is divided outside stove by outlet discharge combustion gas slightly on the lower is molten, and Fe contents reach 94% in molten iron.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integrally；Can be
Mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two
The connection of element internal or two interaction relationships of element.For the ordinary skill in the art, can basis
Concrete condition understands concrete meaning of the above-mentioned term in the utility model.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the present utility model or example.In this manual, to the schematic table of above-mentioned term
Stating need not be directed to identical embodiment or example.And, the specific features of description, structure, material or feature can be
Combined in an appropriate manner in any one or more embodiments or example.Additionally, in the case of not conflicting, this area
Technical staff can be carried out the feature of the different embodiments or example described in this specification and different embodiments or example
With reference to and combination.
Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is
Exemplary, it is impossible to it is interpreted as to limitation of the present utility model, one of ordinary skill in the art is in scope of the present utility model
It is interior above-described embodiment to be changed, changed, replaced and modification.
Claims (1)
1. a kind of system of middle low-order coal sub-prime cascade utilization, it is characterised in that including：
Middle low-order coal breaker, the middle low-order coal breaker has middle low-order coal entrance and middle low order discharge；
Ferrous material breaker, the ferrous material breaker has ferrous material entrance and is exported containing Iron Ore Powder；
There is mixed-forming device, the mixed-forming device middle low order coal powder entrance, entrance containing Iron Ore Powder and material pelletizing to go out
Mouthful, the middle low order coal powder entrance is connected with the middle low order discharge, and the entrance containing Iron Ore Powder is with described containing Iron Ore Powder
Outlet is connected,
Pyrolysis smelting furnace, the pyrolysis smelting furnace has a body, be in turn divided into the horizontal direction in the body feed zone,
Pyrolysis zone and smelting area and discharge zone, wherein,
The feed zone has material pelletizing entrance；
Heating element heater is provided with the pyrolysis zone, the pyrolysis zone is provided with pyrolysis oil gas on the roof of the feed zone
Outlet, the pyrolysis zone is suitable to middle low order coal dust generation pyrolysis and obtains pyrolytic carbon and produce pyrolysis oil gas；
Oxygen-containing gas spray umbrella is provided with the perisporium in the smelting area, spray umbrella by the oxygen-containing gas sprays into the smelting area
, there is imperfect combustion heat release and produce the gas rich in carbon monoxide in oxygen-containing gas, make the material pelletizing that reduction to occur anti-
Metallized pellet should be obtained；
There is metallized pellet to export for the discharge zone, and the metallized pellet outlet is connected with spiral discharging machine, the material
Pelletizing entrance is connected with material pelletizing outlet；
Molten point of stove, the molten point stove has metallized pellet entrance, molten iron outlet and tailings to export, the metallized pellet entrance
It is connected with metallized pellet outlet.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106702152A (en) * | 2016-12-01 | 2017-05-24 | 神雾环保技术股份有限公司 | Quality-based gradient utilization system and method for medium-rank and low-rank coals |
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2016
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106702152A (en) * | 2016-12-01 | 2017-05-24 | 神雾环保技术股份有限公司 | Quality-based gradient utilization system and method for medium-rank and low-rank coals |
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