CN206396269U - 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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- CN206396269U CN206396269U CN201621318777.3U CN201621318777U CN206396269U CN 206396269 U CN206396269 U CN 206396269U CN 201621318777 U CN201621318777 U CN 201621318777U CN 206396269 U CN206396269 U CN 206396269U
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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, ferrous material breaker, mixing arrangement, pyrolysis smelting furnace and molten point of stove, wherein, pyrolysis smelting furnace has body, from top to bottom it is divided into pyrolysis section in body and smelts section, baker spray gun is provided with body middle part of sliding channel, there is mixed material entrance and pyrolysis oil gas vent, pyrolysis section is suitable to the generation pyrolysis of middle low order coal dust and produces pyrolysis oil gas and pyrolytic carbon on pyrolysis section roof；Smelting on the side wall of section, there is oxygen-containing gas to spray umbrella, umbrella is sprayed to smelting section penetrating oxygen-containing gas by oxygen-containing gas, occur imperfect combustion heat release and produce the gas rich in carbon monoxide, mixed material is occurred reduction reaction, smelting the bottom of section has reduzate outlet.The sub-prime cascade utilization of low-order coal in can effectively being realized using the system.
Description
Technical field
The utility model belongs to chemical technology field, specifically, and 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, chemical products are obtained to realize by coal head, realize and the part of oil and natural gas is substituted, 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 not only needs the expensive coke of high-quality, and blast furnace is seriously polluted, energy consumption is higher.At present, it is badly in need of a kind of efficient, cleaning
Utilization coal and iron and steel smelting new technology, crack above problem.
Utility model content
The utility model is intended at least solve one of technical problem in correlation technique to a certain extent.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, the utility model proposes the system of middle low-order coal sub-prime cascade utilization,
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 containing Iron Ore Powder outlet；
Mixing arrangement, the mixing arrangement has middle low order coal powder entrance, entrance containing Iron Ore Powder and mixed material outlet, institute
State middle low order coal powder entrance with the middle low order discharge to be connected, the entrance containing Iron Ore Powder is with described containing Iron Ore Powder outlet phase
Even,
Smelting furnace is pyrolyzed, the pyrolysis smelting furnace, which has in body, the body, is from top to bottom divided into pyrolysis section and smelting
Being provided with section, the body middle part of sliding channel on baker spray gun, the pyrolysis section roof has mixed material entrance and pyrolysis oil
Gas is exported, and the mixed material entrance is connected with mixed material outlet, and the pyrolysis section is suitable to middle low order coal dust and occurs heat
Solution produces pyrolysis oil gas and pyrolytic carbon；On the side wall for smelting section there is oxygen-containing gas to spray umbrella, sprayed by the oxygen-containing gas
Umbrella sprays into oxygen-containing gas to the smelting section, occurs imperfect combustion heat release and produces the gas rich in carbon monoxide, makes described
Reduction reaction occurs for mixed material, and the bottom of the smelting section has reduzate outlet；
Molten point of stove, the molten point stove has reduzate entrance, molten iron outlet and tailings outlet, the reduzate entrance
It is connected with reduzate outlet.
By using the system of the middle low-order coal sub-prime cascade utilization of the utility model above-described embodiment, first by middle low order
Coal dust obtains the petroleum resources of high added value with being pyrolyzed after mixing in the pyrolysis section of pyrolysis smelting furnace containing Iron Ore Powder.
Further, smelting section of the pyrolytic carbon obtained in utilization after low order pulverized coal pyrolysis again with ferrous material in pyrolysis smelting furnace is sent out
Raw reduction reaction obtains reduzate.And smelt and the high-temperature flue gas produced is smelted in section upwards from the pyrolysis on pyrolysis section roof
Oil gas vent is discharged, and then is inversely contacted with the material pelletizing of pyrolysis section, heated material, promotes the progress of pyrolysis.Thus, pass through
Using the system of the middle low-order coal sub-prime cascade utilization of the utility model above-described embodiment, sub-prime ladder can be carried out with centering low-order coal
Level is utilized, and then obtains the petroleum resources of high added value, while realizing effective processing containing 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 of the middle low-order coal sub-prime cascade utilization using the utility model one embodiment
The flow chart of the method for middle low-order coal.
Embodiment
Embodiment of the present utility model is described below in detail, the example of embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the utility model, and it is not intended that to limit of the present utility model
System.
According to one side of the present utility model, the utility model proposes the system of middle low-order coal sub-prime cascade utilization.
The system of the middle low-order coal sub-prime cascade utilization of the utility model specific embodiment, the system bag are described in detail below with reference to Fig. 1
Include：Middle low-order coal breaker 100, ferrous material breaker 200, mixing arrangement 300, pyrolysis smelting furnace 400 and 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；
Ferrous material breaker 200 has ferrous material entrance 210 and containing Iron Ore Powder outlet 220；
Mixing arrangement 300 has middle low order coal powder entrance 310, entrance containing Iron Ore Powder 320 and mixed material outlet 330, in
Low order coal powder entrance 310 is connected with middle low order discharge 120, and entrance containing Iron Ore Powder 320 is connected with containing Iron Ore Powder outlet 220,
Pyrolysis smelting furnace 400, which has, to be from top to bottom divided into pyrolysis section 420 and smelts section 430 in body 410, body 410, this
Being provided with the middle part of sliding channel of body 410 on baker spray gun 440, the roof of pyrolysis section 420 has mixed material entrance 421 and pyrolysis oil gas
Outlet 422, mixed material entrance 421 is connected with mixed material outlet 330.Pyrolysis section is pyrolyzed suitable for middle low order coal dust
Produce pyrolysis oil gas and pyrolytic carbon；Smelt section 430 side wall on have oxygen-containing gas spray umbrella 431, by oxygen-containing gas spray umbrella to
Smelt section and spray into oxygen-containing gas, occur imperfect combustion heat release and produce the gas rich in carbon monoxide, make mixed material
Reduction reaction, smelting the bottom of section 430, there is reduzate to export 432；
Molten point of stove 500 has reduzate entrance 510, molten iron outlet 520 and tailings outlet 530, reduzate entrance 510
It is connected with reduzate outlet 432.
By using the system of the middle low-order coal sub-prime cascade utilization of the utility model above-described embodiment, first by middle low order
Coal dust obtains the petroleum resources of high added value with being pyrolyzed after mixing in the pyrolysis section of pyrolysis smelting furnace containing Iron Ore Powder.
Further, smelting section of the pyrolytic carbon obtained in utilization after low order pulverized coal pyrolysis again with ferrous material in pyrolysis smelting furnace is sent out
Raw reduction reaction obtains reduzate.And smelt and the high-temperature flue gas produced is smelted in section upwards from the pyrolysis on pyrolysis section roof
Oil gas vent is discharged, and then is inversely contacted with the material pelletizing of pyrolysis section, heated material, promotes the progress of pyrolysis.Thus, pass through
Using the system of the middle low-order coal sub-prime cascade utilization of the utility model above-described embodiment, sub-prime ladder can be carried out with centering low-order coal
Level is utilized, and then obtains the petroleum resources of high added value, while realizing effective processing containing 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.According to specific embodiment of the utility model, specifically middle low-order coal can be crushed to average grain diameter equal
For 0.5-5mm.It is possible thereby to further improve follow-up pyrolysis and metallurgy.
Ferrous material breaker 200
According to specific embodiment of the utility model, ferrous material breaker 200 has ferrous material entrance 210 and contained
Iron Ore Powder outlet 220.Thus break process is carried out containing Iron Ore Powder using 200 pairs of ferrous material breaker, 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
The metallurgical effect of miberal powder.According to specific embodiment of the utility model, specifically ferrous material can be crushed to average grain diameter
It is 0.5-5mm.It is possible thereby to further improve follow-up pyrolysis and metallurgy.
Mixing arrangement 300
According to specific embodiment of the utility model, mixing arrangement 300 has middle low order coal powder entrance 310, containing Iron Ore Powder
Entrance 320 and material pelletizing outlet 330, middle low order coal powder entrance 310 is connected with middle low order discharge 120, enters containing Iron Ore Powder
Mouth 320 is connected with containing Iron Ore Powder outlet 220.Thus carried out using the centering low order coal dust of mixing arrangement 300 and Iron Ore Powder at mixing
Reason, to obtain material pelletizing.It is possible thereby to be easy to subsequently be pyrolyzed and metallurgy.
, can be by middle low order coal dust and containing Iron Ore Powder according to (1.64-2.15) according to specific embodiment of the utility model:
1 mass ratio carries out mixed processing.Inventor has found, if middle low order coal dust addition is too low, can not provide original carbon containing enough
Expect imperfect combustion heat release, it is impossible to provide enough heats, the degree of metalization of reduzate is influenceed, if middle low order coal dust addition mistake
It is many, then waste is produced, increases system energy consumption.Obtained from there through said ratio is used after can causing follow-up middle low order pyrolysis of coal
Pyrolytic carbon can fully reduce containing Iron Ore Powder, and then improve the degree of metalization of reduzate.
It is pyrolyzed smelting furnace 400
According to specific embodiment of the utility model, pyrolysis smelting furnace 400 has in body 410, body 410 from top to bottom
It is divided into pyrolysis section 420 and smelts to be provided with section 430, the middle part of sliding channel of body 410 on baker spray gun 440, the roof of pyrolysis section 420 and has
There are mixed material entrance 421 and pyrolysis oil gas vent 422, mixed material entrance 421 is connected with mixed material outlet 330.Pyrolysis
Section is suitable to middle low order coal dust and occurs pyrolysis generation pyrolysis oil gas and pyrolytic carbon.Wherein it is mainly centering low-order coal to be pyrolyzed, from
And the petroleum resources of high added value is obtained, and cause in material pelletizing only remaining pyrolytic carbon and containing Iron Ore Powder.And then can be so as to
In subsequently further using pyrolytic carbon reduction containing Iron Ore 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 being mixed with it, it is possible to use the heat transfer efficiency during Iron Ore Powder thermal conductivity is improved 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 section can be 550-900 degrees Celsius；And material
The time that pelletizing is pyrolyzed in pyrolysis section is 30-60 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.
Smelting on the side wall of section 430, there is oxygen-containing gas to spray umbrella 431, and there is reduzate to export 432 for bottom.Thus, it is hot
Material, which enters, after solution smelts section, and is sprayed into by oxygen-containing gas spray umbrella 431 to section 430 is smelted in oxygen-containing gas, material pelletizing
Carbon occurs imperfect combustion heat release and produces the gas rich in carbon monoxide, and temperature of charge is increased to 1200-1300 and taken the photograph by heat release
Reduction reaction occurs for the oxide of CO and iron in carbon and gas in family name's degree, material pelletizing, obtains reduzate, through smelting section
Discharge the reduzate outlet 432 of 430 bottom.According to specific embodiment of the utility model, mixed material is being smelted in section
The time for carrying out reduction reaction is 25-50 minutes.Simultaneously smelt section in produce the high-temperature flue gas containing part carbon monoxide by
It is arranged on the pyrolysis oil gas vent discharge on pyrolysis section roof.Thus high-temperature flue gas continues and thing during discharging out of the furnace
Expect counter current contacting, heated material utilizes high-temperature flue gas sensible heat, the thermal efficiency of lifting pyrolysis smelting furnace.
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 there are a large amount of combustibles, thus by keep it is micro- just
Pressure, on the one hand advantageously ensures that in device not air inlet, triggers security incident；On the other hand, entering for pyrolytic reaction is conducive to
OK.
Thus, the reducing process of Iron Ore Powder is dexterously combined by inventor with the hot method of oxygen, by being sprayed into smelting section
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 put
Reduction reaction, output reduzate occur for heat, heating pelletizing to reduction temperature.Therefore, by using above-mentioned pyrolysis smelting furnace not
Imperfect combustion heated material occurs for the carbon produced merely with middle low order pyrolysis of coal, while occurring imperfect combustion production using charcoal
Raw CO improves reducing atmosphere, and then significantly improves the reduction effect of Iron Ore Powder, improves the degree of metalization of reduzate.
Molten point of stove 500
According to specific embodiment of the utility model, melting point stove 500, there is reduzate entrance 510, molten iron to export 520 and
Tailings outlet 530, reduzate entrance 510 is connected with reduzate outlet 451.Thus, reduzate is entered in molten point of stove
The molten office reason of row, to obtain molten iron and tailings.
The system of the middle low-order coal sub-prime cascade utilization of the utility model above-described embodiment is understood for convenience, below to profit
It is described with the method for low-order coal in the system sub-prime cascade utilization.The utility model is described in detail below with reference to Fig. 2 specific
The method of the middle low-order coal sub-prime cascade utilization of embodiment.
According to specific embodiment of the utility model, this 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；Mixed processing is carried out in mixing arrangement by middle low order coal dust and containing Iron Ore Powder, to obtain mixture
Material；Mixed material is delivered in pyrolysis smelting furnace, makes being pyrolyzed in middle low-order coal in pyrolysis section in mixed material, is produced
It is pyrolyzed oil gas and pyrolytic carbon；Mixed material after pyrolysis is entered smelting section, oxygen-containing gas is passed through in section to smelting, occur incomplete
The gas of combustion heat release and generation rich in carbon monoxide, makes mixed material occur reduction reaction, to obtain reduzate；Will be also
Originate in thing and molten office reason is carried out in molten point of stove, to obtain molten iron and tailings.
By using the method for the middle low-order coal sub-prime cascade utilization of the utility model above-described embodiment, first by middle low order
Coal dust obtains the petroleum resources of high added value with being pyrolyzed after mixing in the pyrolysis section of pyrolysis smelting furnace containing Iron Ore Powder.
Further, smelting section of the pyrolytic carbon obtained in utilization after low order pulverized coal pyrolysis again with ferrous material in pyrolysis smelting furnace is sent out
Raw reduction reaction obtains reduzate.And smelt and the high-temperature flue gas produced is smelted in section upwards from the pyrolysis on pyrolysis section roof
Oil gas vent is discharged, and then is inversely contacted with the material pelletizing of pyrolysis section, heated material, promotes the progress of pyrolysis.Thus, pass through
Using the system of the middle low-order coal sub-prime cascade utilization of the utility model above-described embodiment, sub-prime ladder can be carried out with centering low-order coal
Level is utilized, and then obtains the petroleum resources of high added value, while realizing effective processing containing 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 method of sub-prime cascade utilization.
S100：Middle low-order coal break process
According to specific embodiment of the utility model, carried out by middle low order coal dust and containing Iron Ore Powder in mixing arrangement 100
Mixed processing, to obtain mixed material.Thus the centering low-order coal of low-order coal breaker 100 carries out break process in,
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, Jin Erti are improved
The metallurgical effect of high follow-up Iron Ore Powder.According to specific embodiment of the utility model, middle low-order coal can be specifically crushed to
Average grain diameter is 0.5-5mm.It is possible thereby to further improve follow-up pyrolysis and metallurgy.
S200：Ferrous material break process
According to specific embodiment of the utility model, ferrous material is crushed using ferrous material breaker 200
Processing, to obtain containing Iron Ore Powder.Thus break process is carried out containing Iron Ore Powder using 200 pairs of ferrous material breaker, so as 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 metallurgical effect of follow-up Iron Ore Powder.According to specific embodiment of the utility model, ferrous material can be specifically crushed to flat
Equal particle diameter is 0.5-5mm.It is possible thereby to further improve follow-up pyrolysis and metallurgy.
S300：Mixed processing
According to specific embodiment of the utility model, carried out by middle low order coal dust and containing Iron Ore Powder in mixing arrangement 300
Mixed processing, to obtain mixed material.Thus carried out using the centering low order coal dust of mixing arrangement 300 and Iron Ore Powder at mixing
Reason, to obtain material pelletizing.It is possible thereby to be easy to subsequently be pyrolyzed and metallurgy.
, can be by middle low order coal dust and containing Iron Ore Powder according to (1.64-2.15) according to specific embodiment of the utility model:
1 mass ratio carries out mixed processing.Inventor has found, if middle low order coal dust addition is too low, can not provide original carbon containing enough
Expect imperfect combustion heat release, it is impossible to provide enough heats, the degree of metalization of reduzate is influenceed, if middle low order coal dust addition mistake
It is many, then waste is produced, increases system energy consumption.Obtained from there through said ratio is used after can causing follow-up middle low order pyrolysis of coal
Pyrolytic carbon can fully reduce containing Iron Ore Powder, and then improve the degree of metalization of reduzate.
S400：It is pyrolyzed and metallurgy in pyrolysis smelting furnace
According to specific embodiment of the utility model, mixed material is delivered in pyrolysis smelting furnace 400, made in mixed material
Be pyrolyzed in middle low-order coal in pyrolysis section, produce pyrolysis oil gas and pyrolytic carbon；Mixed material after pyrolysis is set to enter smelting
Section, oxygen-containing gas is passed through to smelting in section, occurred imperfect combustion heat release and produced the gas rich in carbon monoxide, make mixture
Reduction reaction occurs for material, to obtain reduzate.
According to specific example of the present utility model, pyrolysis section is suitable to middle low order coal dust and occurs pyrolysis generation pyrolysis oil gas and heat
Solve carbon.Wherein it is mainly centering low-order coal to be pyrolyzed, so as to obtain the petroleum resources of high added value, and causes material pelletizing
In only remaining pyrolytic carbon and containing Iron Ore Powder.And then can be in order to subsequently further using pyrolytic carbon reduction containing Iron Ore Powder.So as to real
The sub-prime cascade utilization of low-order coal in existing.
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 being mixed with it, it is possible to use the heat transfer efficiency during Iron Ore Powder thermal conductivity is improved 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 section can be 550-900 degrees Celsius；And material
The time that pelletizing is pyrolyzed in pyrolysis section is 30-60 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.
Smelting on the side wall of section 430, there is oxygen-containing gas to spray umbrella 431, and there is reduzate to export 432 for bottom.Thus, it is hot
Material, which enters, after solution smelts section, and is sprayed into by oxygen-containing gas spray umbrella 431 to section 430 is smelted in oxygen-containing gas, material pelletizing
Carbon occurs imperfect combustion heat release and produces the gas rich in carbon monoxide, and temperature of charge is increased to 1200-1300 and taken the photograph by heat release
Reduction reaction occurs for the oxide of CO and iron in carbon and gas in family name's degree, material pelletizing, obtains reduzate, through smelting section
Discharge the reduzate outlet 432 of 430 bottom.According to specific embodiment of the utility model, mixed material is being smelted in section
The time for carrying out reduction reaction is 25-50 minutes.Simultaneously smelt section in produce the high-temperature flue gas containing part carbon monoxide by
It is arranged on the pyrolysis oil gas vent discharge on pyrolysis section roof.Thus high-temperature flue gas continues and thing during discharging out of the furnace
Expect counter current contacting, heated material utilizes high-temperature flue gas sensible heat, the thermal efficiency of lifting pyrolysis smelting furnace.
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 there are a large amount of combustibles, thus by keep it is micro- just
Pressure, on the one hand advantageously ensures that in device not air inlet, triggers security incident；On the other hand, entering for pyrolytic reaction is conducive to
OK.
Thus, the reducing process of Iron Ore Powder is dexterously combined by inventor with the hot method of oxygen, by being sprayed into smelting section
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 put
Reduction reaction, output reduzate occur for heat, heating pelletizing to reduction temperature.Therefore, by using above-mentioned pyrolysis smelting furnace not
Imperfect combustion heated material occurs for the carbon produced merely with middle low order pyrolysis of coal, while occurring imperfect combustion production using charcoal
Raw CO improves reducing atmosphere, and then significantly improves the reduction effect of Iron Ore Powder, improves the degree of metalization of reduzate.
S500：Molten office reason
According to specific embodiment of the utility model, reduzate is subjected to molten office reason in molten point of stove 500, so as to
To molten iron and tailings.
Embodiment
Middle low-order 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% | 56.3 | Butt |
| Volatile matter | Wt% | 36.4 | Butt |
| Ash content | Wt% | 7.3 | Butt |
Iron ore uses somewhere iron ore.
The iron ore constituent analysis of table 2
Middle low-order coal and iron ore are used into crusher in crushing, 1~3mm of raw material granularity respectively.Middle low-order coal after will be broken
Powder and Iron Ore Powder are mixed, and middle low order coal dust is suitably excessive, middle low order coal dust：Iron Ore Powder=1.98:1.Mixed material is passed through
In conveying device feeding pyrolysis smelting furnace, device is divided into pyrolysis section and smelts section from top to bottom, is provided with a device in lower furnace
Baker spray gun, 650 DEG C are warming up to by furnace temperature, while umbrella is sprayed provided with oxygen-containing gas (air or oxygen) in device bottom, to device
Middle injection oxygen, oxygen discharge rate is 733m3Carbon is contacted with oxygen in/t raw materials, material, and with oxygen imperfect combustion occurs for material
Reaction, releases heat, and material is heated to 1300 DEG C or so by heated material, and the oxide of carbon and iron in material is reduced
Reaction, generates reduzate.A large amount of high-temperature flue gas adverse currents rich in CO of carbon imperfect combustion output in material connect with material
Touch, the oil gas vent at the top of device is discharged out of the furnace, and raw material is gradually warming up to 850 DEG C or so by high-temperature flue gas, and material is by high temperature
When flue gas is to more than 500 DEG C, occurs pyrolytic reaction, output pyrolysis oil gas discharges out of the furnace through oil gas vent at the top of device, heat
Solve after the purified separation of oil gas, obtain gas feeding gas holder storage, pyrolysis oil is directly sold or as Downstream processing raw material.Smelting
Refine in the reduzate of section output, molten point of stove of feeding combustion gas, be heated to 1500 DEG C, carry out slag sluicing system, molten iron is by slightly
Outside molten point of stove of outlet discharge combustion gas on the lower, Fe contents reach 93.5% 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, can also be indirectly connected to by intermediary, can be two
The connection of element internal or the interaction relationship of two elements.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 utility model, unless otherwise clearly defined and limited, fisrt feature is "above" or "below" second feature
Can be that the first and second features are directly contacted, or the first and second features pass through intermediary mediate contact.Moreover, first is special
Levy second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only
Represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be with
Be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height less than second feature.
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 the 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
Identical embodiment or example need not be directed to by stating.Moreover, specific features, structure, material or the feature of description can be
Combined in an appropriate manner in any one or more embodiments or example.In addition, in the case of not conflicting, this area
Technical staff can be carried out the feature of the not be the same as Example described in this specification or example and non-be the same as Example 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 containing Iron Ore Powder outlet；
Mixing arrangement, the mixing arrangement have middle low order coal powder entrance, entrance containing Iron Ore Powder and mixed material outlet, it is described in
Low order coal powder entrance is connected with the middle low order discharge, and the entrance containing Iron Ore Powder is connected with the outlet containing Iron Ore Powder,
Smelting furnace is pyrolyzed, the pyrolysis smelting furnace, which has, is from top to bottom divided into pyrolysis section and smelting section, institute in body, the body
State and baker spray gun is provided with body middle part of sliding channel, there is mixed material entrance and pyrolysis oil gas to go out on the pyrolysis section roof
Mouthful, the mixed material entrance is connected with mixed material outlet, and the pyrolysis section is suitable to middle low order coal dust and occurs pyrolysis production
Heat solution oil gas and pyrolytic carbon；It is described smelt section side wall on have oxygen-containing gas spray umbrella, by the oxygen-containing gas spray umbrella to
The smelting section sprays into oxygen-containing gas, occurs imperfect combustion heat release and produces the gas rich in carbon monoxide, makes the mixing
Reduction reaction occurs for material, and the bottom of the smelting section has reduzate outlet；
Molten point of stove, the molten point stove has reduzate entrance, molten iron outlet and tailings outlet, the reduzate entrance and institute
Reduzate outlet is stated to be connected.
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