CN207031476U - DRI, building materials, the system of Coal (syngas) polygeneration - Google Patents
DRI, building materials, the system of Coal (syngas) polygeneration Download PDFInfo
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- CN207031476U CN207031476U CN201720694116.9U CN201720694116U CN207031476U CN 207031476 U CN207031476 U CN 207031476U CN 201720694116 U CN201720694116 U CN 201720694116U CN 207031476 U CN207031476 U CN 207031476U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model discloses DRI, building materials, Coal (syngas) polygeneration system, including：Reaction tower, inside limit gasification section, reduction section and molten segmentation successively from top to bottom, gasification section has the first impinging stream nozzle of supply oxygen and coal dust, reduction section has pre-reduced iron miberal powder entrance, there is taper necking between reduction section and molten segmentation, there is the first gas exit on the reaction tower of taper necking side-walls, molten segmentation has slag liquid outlet and molten iron outlet；Coal gas quenching column, there are gas exit and dust outlet after the first gas entry, cooled coal gas entrance, heat exchange；Prereduction tower, there is the second impinging stream nozzle, the second gas exit and pre-reduced iron the miberal powder outlet of supply Iron Ore Powder and coal gas, and the second impinging stream nozzle is connected with gas exit after heat exchange.The system can realize production coal gas and molten iron simultaneously, and gained molten iron founding or can further refine special steel, and the slag liquid of gained can be used for producing building and ornament materials, and whole production efficiency is high, cost is low and environmentally friendly.
Description
Technical field
The utility model belongs to field of metallurgy, specifically, the utility model is related to DRI, building materials, coal gasification
The system of Poly-generation.
Background technology
Direct reduction iron making is the basis of steel production short route, is using mill coal as main energy sources, in the soft of iron ore
Change and the method that reduction obtains solid metallic iron is carried out below temperature.Due to the pollution of harmful components can be avoided in production process,
The chemical composition of its product DRI (DRI) is more pure, is steel scrap substitute important in steel production, is to solve to give up
The important channel of steel inadequate resource, it is the diluent of steel scrap relict element, is that electric furnace smelting high-quality clean steel, high-quality steel can not
Or the raw material of the control relict element lacked, it is former material necessary to equipment manufacture production oil, synthesis chemical industry, nuclear facilities etc.
Material, is the best cooling agent of pneumatic steelmaking.Therefore, global electric furnace steel mill will continue to increase to the demand of DRI.
Modern coal gasification course is using coal as raw material, and pure oxygen and vapor etc. are gasifying agent, under 1500 degree celsius temperatures
Reaction generation active principle (CO+H2) it is more than 90% synthesis gas, slag flow to gasification furnace Quench section by water Quench in liquid form
It is cured as granular discharge.Coal gasification is the key technology of coal chemical industry, is current fuel oil from coal, coal fuel gas, coal inhibition and generation
The basis of the techniques such as product.Gasification and the investment of coal chemical industry process are larger, energy consumption is higher, process conditions are harsh and material requirements is higher
Workshop section.
Therefore, it is badly in need of finding the technique that a kind of cost is low, technique simply produces DRI and coal gas.
Utility model content
The utility model is intended to one of technical problem at least solving in correlation technique to a certain extent.Therefore, this reality
With a new purpose be to propose a kind of DRI, building materials, Coal (syngas) polygeneration system.The system can be simultaneously real
Now produce coal gas and molten iron, gained molten iron founding or can further refine special steel, and the slag liquid of gained can be used for production to build
Ornament materials, whole production efficiency is high, cost is low and environmentally friendly.
In one side of the present utility model, the utility model proposes a kind of DRI, building materials, coal gasification are multi-joint
The system of production, according to embodiment of the present utility model, the system includes：
Reaction tower, limit gasification section, reduction section and molten segmentation, the gasification section in the reaction tower successively from top to bottom
The first impinging stream nozzle of supply oxygen and coal dust is disposed with, the reduction section is disposed with pre-reduced iron miberal powder entrance, described to go back
Taper necking is disposed between former section and the molten segmentation, first is disposed with the reaction tower of the taper necking side-walls
Gas exit, the molten step-by-step arrangement have slag liquid outlet and molten iron outlet；
Coal gas quenching column, the coal gas quenching column have the first gas entry, cooled coal gas entrance, heat exchange after gas exit and
Dust outlet, first gas entry are connected with first gas exit；
Prereduction tower, the second impinging stream nozzle, the second coal gas that the prereduction tower has supply Iron Ore Powder and coal gas go out
Mouth and the outlet of pre-reduced iron miberal powder, second impinging stream nozzle are connected with gas exit after the heat exchange, the pre-reduced iron
Miberal powder outlet is connected with the pre-reduced iron miberal powder entrance.
According to the DRI of the utility model embodiment, building materials, Coal (syngas) polygeneration system, by reaction tower
Gasification section uses impinging stream nozzle to hit coal dust at a certain angle with oxygen to realize that coal dust and the quick of oxygen mix, and accelerates
The reaction speed of coal dust and oxygen, while piston flow reactor form is formed, to reduce flow field back-mixing, and by reaction tower
Reduction section sprays into pre-reduced iron miberal powder, is remarkably improved the reduction degree of Iron Ore Powder, and using coal gas of high temperature caused by gasification section
Sensible heat pre-reduced iron miberal powder is further reduced, while reduce the first coal gas temperature, it is energy-saving, reduce coal gas
The yield of cooling waste water, while taper necking is arranged between reduction section and fusing section, and the first gas exit is arranged
On the reaction tower of taper necking side-walls, the Dust Capacity in the first coal gas can be substantially reduced, and in the bottom of reaction tower
Molten segmentation is set, and the reduzate that reduction section obtains enters molten point that slag iron is realized in molten segmentation under gravity, and then realizes
The follow-up recycling of molten iron and slag liquid, molten iron founding or can further refine special steel, and slag liquid can be used for producing building material product,
First coal gas is supplied into prereduction tower before reduced iron miberal powder, carrying out Quench to the first coal gas using cooled coal gas in advance changes
Heat, the dust content in coal gas after exchanging heat thus can be further reduced, improve the reproducibility of coal gas after heat exchange, and then improve iron ore
The prereduction rate of powder, while the temperature of coal gas after heat exchange can be reduced, Iron Ore Powder bond vitrified is avoided in prereduction tower, secondly iron
Miberal powder is introduced into prereduction tower and carries out pre-reduction treatment in advance before reaction tower is entered, after on the one hand further can utilizing heat exchange
The sensible heat of coal gas, improves the efficiency of utilization of whole system, the percent reduction being on the other hand remarkably improved in reaction tower, in addition,
In prereduction tower, impinging stream nozzle is used to hit coal gas after Iron Ore Powder and heat exchange at a certain angle to realize Iron Ore Powder and change
The quick mixing of coal gas after heat, accelerate Iron Ore Powder and the reaction speed of coal gas after heat exchange, shorten the reaction time, while reduce reaction
Body accumulates, and reduces system investments.
In addition, may be used also according to the system of the DRI of the utility model above-described embodiment, building materials, Coal (syngas) polygeneration
With with technical characteristic additional as follows：
Optional, said system further comprises：Cyclone separator, the cyclone separator have gaseous mixture entrance, removed
Gas outlet and particle outlet, the gaseous mixture entrance are connected with second gas exit after dirt；Ceramic filter, the ceramics
Filter has gas entrance after dedusting, gas exports after dust granules outlet and filtering, gas entrance and the dedusting after the dedusting
Gas outlet afterwards is connected；Scrubber, the scrubber export with gas after gas entrance, water inlet and washing after filtering,
Gas entrance is connected with gas outlet after the filtering after the filtering；Gas purification tower, the gas purification tower have gas after washing
Entrance and purification gas exit, gas entrance is connected with gas outlet after the washing after the washing.Thus, by by prereduction tower
The second obtained coal gas supplies to cyclone separator and ceramic filter further to remove the dust in the second coal gas successively, drops
Solid content in low second coal gas, and then the water consumption of scrubber is reduced, reduce the wastewater treatment capacity of system.
It is optional, at least one of the dust outlet, the particle outlet and dust granules outlet with it is described
Pre-reduced iron miberal powder entrance is connected.Thus, the recovery utilization rate of Iron Ore Powder can be dramatically increased, and then improves molten iron in reaction tower
Content.
It is optional, the purification gas exit and the cooled coal gas entrance, second impinging stream nozzle and it is described it is pre- also
At least one of former Iron Ore Powder entrance is connected.Thus, it is remarkably improved the production efficiency of whole system.
Optional, the system further comprises：High temperature casting apparatus, the high temperature casting apparatus export with the slag liquid
It is connected.Thus, it is possible to increase economic efficiency.
Additional aspect and advantage of the present utility model will be set forth in part in the description, partly by from following description
In become obvious, or by it is of the present utility model practice recognize.
Brief description of the drawings
Of the present utility model above-mentioned and/or additional aspect and advantage will in the description from combination accompanying drawings below to embodiment
Become obvious and be readily appreciated that, wherein：
Fig. 1 be according to the DRI of the utility model one embodiment, building materials, Coal (syngas) polygeneration system architecture
Schematic diagram；
Fig. 2 be according to the DRI of the utility model further embodiment, building materials, Coal (syngas) polygeneration system knot
Structure schematic diagram；
Fig. 3 be according to the DRI of another embodiment of the utility model, building materials, Coal (syngas) polygeneration system knot
Structure schematic diagram；
Fig. 4 be according to the DRI of another embodiment of the utility model, building materials, Coal (syngas) polygeneration system knot
Structure schematic diagram；
Fig. 5 be according to the DRI of another embodiment of the utility model, building materials, Coal (syngas) polygeneration system knot
Structure schematic diagram；
Fig. 6 is real according to the system of the DRI of another embodiment of the utility model, building materials, Coal (syngas) polygeneration
Apply DRI, building materials, the method flow schematic diagram of Coal (syngas) polygeneration；
Fig. 7 is real according to the system of the DRI of another embodiment of the utility model, building materials, Coal (syngas) polygeneration
Apply DRI, building materials, the method flow schematic diagram of Coal (syngas) polygeneration；
Fig. 8 is real according to the system of the DRI of another embodiment of the utility model, building materials, Coal (syngas) polygeneration
Apply DRI, building materials, the method flow schematic diagram of Coal (syngas) polygeneration；
Fig. 9 is real according to the system of the DRI of another embodiment of the utility model, building materials, Coal (syngas) polygeneration
Apply DRI, building materials, the method flow schematic diagram of Coal (syngas) polygeneration；
Figure 10 be according to the DRI of another embodiment of the utility model, building materials, Coal (syngas) polygeneration system
Implement DRI, building materials, the method flow schematic diagram of Coal (syngas) polygeneration.
Embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by ginseng
The embodiment for examining accompanying drawing description is exemplary, it is intended to for explaining the utility model, and it is not intended that to the utility model
Limitation.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ",
The orientation or position relationship of the instruction such as " clockwise ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " are based on shown in the drawings
Orientation or position relationship, it is for only for ease of description the utility model and simplifies description, rather than indicates or imply signified dress
Put or element there must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to the utility model
Limitation.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include at least one this feature.In description of the present utility model, " multiple " are meant that at least two, such as two
It is individual, three etc., unless otherwise specifically defined.
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 by intermediary, can be two
The connection of element internal or the interaction relationship of two elements, limited unless otherwise clear and definite.For the common skill of this area
For art personnel, concrete meaning of the above-mentioned term in the utility model can be understood as the case may be.
In one side of the present utility model, the utility model proposes a kind of system for handling Iron Ore Powder, according to this reality
With new embodiment, with reference to figure 1, the system includes：Reaction tower 100, coal gas quenching column 200 and prereduction tower 300.
According to embodiment of the present utility model, gasification section 11, reduction section 12 are limited in reaction tower 100 successively from top to bottom
With molten segmentation 13.Specifically, gasification section, reduction section and molten segmentation are cylindric, and gasification section and reduction section use water cooling
Wall construction or structure of refractory, molten bath section use structure of refractory.
According to one embodiment of the present utility model, gasification section 11 is disposed with the first percussion flow spray of supply oxygen and coal dust
Mouth 101, so that coal dust and oxygen enter gasification section after being sufficiently mixed produce the also Primordial Qi containing carbon monoxide.Invention human hair
It is existing, by using impinging stream nozzle to hit coal dust and oxygen to realize coal dust and oxygen at a certain angle in reaction tower gasification section
Quick mixing, the reaction speed of coal dust and oxygen can be accelerated, while form piston flow reactor form, be returned with reducing flow field
It is mixed, so as to be remarkably improved the reduction degree of Iron Ore Powder.Specifically, the first impinging stream nozzle is arranged in the top of gasification section.
According to further embodiment of the present utility model, reduction section 12 is disposed with pre-reduced iron miberal powder entrance 102, specifically
, pre-reduced iron miberal powder porch can be disposed with nozzle, i.e., pre-reduced iron miberal powder is injected into reduction section so that with gasification section
The caused also Primordial Qi containing carbon monoxide and hydrogen fully contacts, so as to improve the reduction degree of pre-reduced iron miberal powder.
According to another embodiment of the present utility model, taper necking 103 is disposed between reduction section 12 and molten segmentation 13,
The first gas exit 104 is disposed with the reaction tower 100 of the side-walls of taper necking 103.Specifically, reduzate and coal gas are together
Enter molten segmentation through taper necking, reduzate carries out molten office reason, and coal gas is discharged from the first gas exit.Thus, it is possible to
Significantly reduce Dust Capacity in the first coal gas.
According to another embodiment of the present utility model, molten segmentation 13 is disposed with slag liquid outlet 105 and molten iron outlet 106,
And the reduzate suitable for reduction section is obtained carries out molten office reason, to obtain the first coal gas, slag liquid and molten iron.Specifically,
Reducing atmosphere using carbon monoxide caused by reaction tower gasification section and hydrogen cumulative volume content for 80-90%, will be levigate
Pre-reduced iron miberal powder is delivered to reduction section (laminar flow section) profit of reaction tower by Geldart-D particle (cooled coal gas is as carrier gas) or machinery
Further reduced with the sensible heat and its reproducibility of coal gas, obtained pure iron and slag melts at high temperature, descending by gravity
To the molten segmentation of reaction tower, carry out molten iron and the molten of slag liquid is divided.
Inventor has found, by reaction tower gasification section using impinging stream nozzle principle by coal dust and oxygen at a certain angle
Hit to realize the quick mixing of coal dust and oxygen, accelerate the reaction speed of coal dust and oxygen, while form piston flow reactor
Form, to reduce flow field back-mixing, by being passed through pre-reduced iron miberal powder in reaction tower reduction section, it is remarkably improved the reduction of Iron Ore Powder
Degree, and pre-reduced iron miberal powder is further reduced using the sensible heat of coal gas of high temperature caused by gasification section, reduce simultaneously
The temperature of first coal gas, it is energy-saving, reduce the yield of coal gas cooling waste water.Tapered contracting is provided with the first gas exit
Mouthful, the Dust Capacity in the first coal gas can be substantially reduced.Molten segmentation is set in the bottom of reaction tower, realize slag iron molten point, and then
Realize the follow-up recycling of molten iron and slag liquid, molten iron founding or can further refine special steel.
According to one embodiment of the present utility model, the particle diameter of coal dust is not particularly restricted, those skilled in the art
It can be selected according to being actually needed, according to a specific embodiment of the present utility model, the particle diameter of coal dust can be 10-90
Micron accounting is more than 90%.Inventor has found that the coal dust of the particle size range has preferable gasification efficiency, so as to obtain an oxidation
Carbon and hydrogen content it is high also Primordial Qi, and then improve pre-reduced iron miberal powder reduction efficiency.
According to further embodiment of the present utility model, the water content of coal dust is not particularly restricted, the technology of this area
Personnel can be selected according to being actually needed, and according to a specific embodiment of the present utility model, the water content of coal dust can be with
Less than 2wt%.Thus, it is possible to further improve the reduction efficiency of pre-reduced iron miberal powder.
According to another embodiment of the present utility model, the particular type of coal dust is not particularly restricted, the skill of this area
Art personnel can be selected according to being actually needed, according to a specific embodiment of the present utility model, coal dust can be selected from
At least one of the weakly caking coal and free-burning coal on the ground such as the shenfu coal of northern Shensi, Datong coal.
According to another embodiment of the present utility model, the condition of gasification section gasification is not particularly restricted, this area
Technical staff can be selected according to being actually needed, and according to a specific embodiment of the present utility model, the temperature of gasification can
Think 1800-2000 degrees Celsius, the residence time can be that 1~5 second inventor has found, other can be significantly better than under the conditions of being somebody's turn to do
Part improves the gasification efficiency of coal dust, so as to further improve the reduction efficiency of pre-reduced iron miberal powder.
According to another embodiment of the present utility model, coal dust is with oxygen, the mass ratio of pre-reduced iron miberal powder not by spy
Do not limit, those skilled in the art can be selected according to being actually needed, according to one of the present utility model specific implementation
Example, coal dust and oxygen ratio are (450~650) kg/ (300~420) m3, pre-reduced iron miberal powder and coal gas mass ratio can be
((0.5~2) t/1000m3.Inventor has found that coal dust and oxygen ratio are suitable, effective gas CO+H in coal gas2Content is high, efficiency of carbon con version
Height, be advantageous to reduction of iron ore fines and coal gas later use, coal/oxygen is than reducing, CO in coal gas2Gas content increase, reduces coal gas
Reduction potential, be unfavorable for reduction of iron ore fines.Than reducing, reacting furnace temperature is accordingly raised coal/oxygen, and resistance to material, which corrodes, to be aggravated, but favorably
Melt and divide in slag iron.And the mixed proportion of the application is used to be advantageous to molten point of slag iron while reduction efficiency is improved.
According to embodiment of the present utility model, coal gas quenching column 200 has the first gas entry 201, cooled coal gas entrance
202nd, gas exit 203 and dust outlet 204 after exchanging heat, the first gas entry 201 are connected with the first gas exit 104, and suitable
In the first coal gas is exchanged heat with cooled coal gas, so as to coal gas and dust after being exchanged heat.Inventor has found, by the first coal gas
Before supply to prereduction tower reduced iron miberal powder, Quench heat exchange is carried out to the first coal gas using cooled coal gas in advance, thus can enter one
Dust content after step reduction heat exchange in coal gas, while it is stripped of H2O and CO2, so as to improve heat exchange after coal gas reproducibility, enter
And the prereduction rate of Iron Ore Powder is improved, while the temperature of coal gas after heat exchange can be reduced, Iron Ore Powder bond vitrified is avoided in prereduction
In tower.It should be noted that the structure of coal gas quenching column is not particularly restricted, those skilled in the art can be according to reality
Need to be selected, such as can be upright hollow columnar structures, Ta Nei can use water wall structure, and cooled coal gas entrance can be set
Put in the bottom sidewall of coal gas quenching column, gas exit can be arranged on the top of coal gas quenching column after heat exchange.
According to one embodiment of the present utility model, the mixed volume ratio of cooled coal gas and the first coal gas is not limited especially
System, those skilled in the art can be selected according to being actually needed, cold according to a specific embodiment of the present utility model
The mixed volume of coal gas and the first coal gas ratio can be 0.5~0.7：1.Inventor's discovery, cooled coal gas and the first coal gas mixture
For product than high, the gas temperature into prereduction tower is low, and it is powder pre-reduced to be unfavorable for iron ore, but the two ratio it is too low can cause to enter it is pre-
Reducing gas temperature is too high and causes Iron Ore Powder to soften.Thus, it can ensure that Iron Ore Powder is pre- using the mixed proportion of the application
The softening of Iron Ore Powder is avoided while percent reduction is high.
According to further embodiment of the present utility model, the temperature of coal gas is not particularly restricted after cooling, this area
Technical staff can be selected according to being actually needed, according to a specific embodiment of the present utility model, coal gas after cooling
Temperature can be not more than 1000 degrees Celsius.
According to embodiment of the present utility model, prereduction tower 300 has the second percussion flow of supply Iron Ore Powder and coal gas spray
Mouth 301, the second gas exit 302 and pre-reduced iron miberal powder outlet 303, the second impinging stream nozzle 301 and gas exit after heat exchange
203 are connected, and pre-reduced iron miberal powder outlet 303 is connected (centre should have Geldart-D particle facility) with pre-reduced iron miberal powder entrance 102, and
Suitable for coal gas after Iron Ore Powder and heat exchange is carried out into pre-reduction treatment, to obtain pre-reduced iron miberal powder and the second coal gas, and will be pre-
Reduced iron miberal powder is supplied into reaction tower.Inventor has found that Iron Ore Powder is introduced into prereduction tower and entered in advance before reaction tower is entered
Row pre-reduction treatment, on the one hand the efficiency of utilization of whole system can be improved further using the sensible heat of coal gas after heat exchange, it is another
Aspect is remarkably improved the degree of metalization of the reduction efficiency and Iron Ore Powder in reaction tower.In prereduction tower, sprayed using percussion flow
Mouth hits coal gas after Iron Ore Powder and heat exchange to realize Iron Ore Powder and the quick mixing of coal gas after heat exchange at a certain angle, accelerates iron
The reaction speed of miberal powder and coal gas after heat exchange, shortens the reaction time, while reduces reactor volume, reduces system investments.Need
Illustrating, the structure of prereduction tower is not particularly restricted, and those skilled in the art can be selected according to being actually needed,
Such as can be hollow cylindrical；Second impinging stream nozzle can be arranged on the top of prereduction tower, and the second gas exit can be with
It is arranged on prereduction tower lower sides, pre-reduced iron miberal powder exports the bottom that can be arranged on prereduction tower.
According to one embodiment of the present utility model, the granularity of Iron Ore Powder is not particularly restricted, those skilled in the art
Member can be selected according to being actually needed, and according to a specific embodiment of the present utility model, the granularity of Iron Ore Powder can be
10~90 μm.Inventor has found that iron ore Powder Particle Size, which reduces, is advantageous to gas-solid reaction, accelerates reduction of iron ore fines, is advantageous to pneumatic transporting
Send；But granularity further reduces gas solid separation difficulty, dust content is high in coal gas, aggravates follow-up gas purification investment.Thus, adopt
Cost of investment can be reduced with the Iron Ore Powder of the granularity of the application while reduction of iron ore fines rate is improved.
According to further embodiment of the present utility model, the particular type of Iron Ore Powder is not particularly restricted, this area
Technical staff can be selected according to being actually needed, and according to a specific embodiment of the present utility model, Iron Ore Powder can be
Selected from least one of Australian imported iron ore fines, Brazilian imported iron ore, Anshan, liaoning Province iron ore, Hebei Qian'an iron ore.
According to another embodiment of the present utility model, the mixing quality of Iron Ore Powder and coal gas after cooling is not than by special
Limitation, those skilled in the art can be selected according to being actually needed, according to a specific embodiment of the present utility model,
Iron Ore Powder and the mixing ratio of coal gas after cooling can be 0.5t：1000m3.Inventor has found, if Iron Ore Powder and coal gas ratio are high
When, reduction temperature can reduce, and reduce reduction of iron ore fines speed, and gas-solid dispersion effect is bad, or even reduction tolerance deficiency, iron ore
Powder is insufficient with reducing, and aggravates final reduction reactor load.
According to the DRI of the utility model embodiment, building materials, Coal (syngas) polygeneration system, by reaction tower
Gasification section uses impinging stream nozzle to hit coal dust at a certain angle with oxygen to realize that coal dust and the quick of oxygen mix, and accelerates
The reaction speed of coal dust and oxygen, while piston flow reactor form is formed, to reduce flow field back-mixing, and by reaction tower
Reduction section sprays into pre-reduced iron miberal powder, is remarkably improved the reduction degree of Iron Ore Powder, and using coal gas of high temperature caused by gasification section
Sensible heat pre-reduced iron miberal powder is further reduced, while reduce the first coal gas temperature, it is energy-saving, reduce coal gas
The yield of cooling waste water, while taper necking is arranged between reduction section and fusing section, and the first gas exit is arranged
On the reaction tower of taper necking side-walls, the Dust Capacity in the first coal gas can be substantially reduced, and in the bottom of reaction tower
Molten segmentation is set, and the reduzate that reduction section obtains enters molten point that slag iron is realized in molten segmentation under gravity, and then realizes
The follow-up recycling of molten iron and slag liquid, molten iron founding or can further refine special steel, and slag liquid can be used for producing building material product,
First coal gas is supplied into prereduction tower before reduced iron miberal powder, carrying out Quench to the first coal gas using cooled coal gas in advance changes
Heat, the dust content in coal gas after exchanging heat thus can be further reduced, improve the reproducibility of coal gas after heat exchange, and then improve iron ore
The prereduction rate of powder, while the temperature of coal gas after heat exchange can be reduced, Iron Ore Powder bond vitrified is avoided in prereduction tower, secondly iron
Miberal powder is introduced into prereduction tower and carries out pre-reduction treatment in advance before reaction tower is entered, after on the one hand further can utilizing heat exchange
The sensible heat of coal gas, improves the efficiency of utilization of whole system, the percent reduction being on the other hand remarkably improved in reaction tower, in addition,
In prereduction tower, impinging stream nozzle is used to hit coal gas after Iron Ore Powder and heat exchange at a certain angle to realize Iron Ore Powder and change
The quick mixing of coal gas after heat, accelerate Iron Ore Powder and the reaction speed of coal gas after heat exchange, shorten the reaction time, while reduce reaction
Body accumulates, and reduces system investments.
According to embodiment of the present utility model, with reference to figure 2, above-mentioned DRI, building materials, the system of Coal (syngas) polygeneration
Further comprise：Cyclone separator 400, ceramic filter 500, scrubber 600 and gas purification tower 700.
According to embodiment of the present utility model, cyclone separator 400 has gas outlet 402 after gaseous mixture entrance 401, dedusting
With particle outlet 403, gaseous mixture entrance 401 is connected with the second gas exit 302, and second suitable for will be obtained in prereduction tower
Coal gas carries out separating treatment, to obtain gas and particle after dedusting.Inventor has found, passes through the second coal for obtaining prereduction tower
Gas supplies to cyclone separator the dust that can be removed in the second coal gas, can reduce the solid content in the second coal gas, and then subtract
The water consumption of few follow-up scrubber, reduce the wastewater treatment capacity of system.It should be noted that the series of cyclone separator is simultaneously
It is not particularly limited, those skilled in the art can be selected according to being actually needed, and can be two-stage for example, with reference to figure 2
Series connection.
According to embodiment of the present utility model, ceramic filter 500 has gas entrance 501, dust granules outlet after dedusting
502 export 503 with gas after filtering, and gas entrance 501 is connected with gas outlet 402 after dedusting after dedusting, and suitable for gas after dedusting is entered
Row filtration treatment, to obtain gas after dust granules and filtering.Inventor has found, by after the dedusting that obtains cyclone separator
Gas supplies the dust in gas after can further removing dedusting to ceramic filter, reduces the solid content in gas after dedusting, and then
The water consumption of scrubber is further reduced, reduces the wastewater treatment capacity of system.
According to embodiment of the present utility model, scrubber 600 has gas entrance 601, water inlet 602 and water after filtering
Gas outlet 603 after washing, gas entrance 601 503 is connected with gas outlet after filtering after filtering, and be suitable to contact gas after filtering with water into
Row carrying out washing treatment, so as to gas after being washed.Specifically, gas is passed through from the bottom of scrubber after filtering, water is washed from coal gas
The middle and upper part for washing tower is sprayed into, and gas can be further purified in the presence of water after filtering, is removed the dust in gas after filtering, is obtained
Gas after to washing.It should be noted that the water of gas can reuse after simple stand after washing and filtering, so can be further
The dosage of water is reduced, and then reduces the treating capacity of whole technique waste water.
According to embodiment of the present utility model, gas purification tower 700 has gas entrance 701 and purification gas exit after washing
702, gas entrance 701 is connected with gas outlet 603 after washing after washing, and carries out purified treatment suitable for gas after washing, so as to
To purification coal gas.Specifically, contain CO+H2Coal gas in prereduction and whole reduced iron miberal powder process, iron oxide and CO, oxidation occurs
Iron and H2Etc. course of reaction, reaction result generation iron and H2O and CO2Sulphur in coal is converted into by oxidizing gas, coal gasification course
H2S, COS is mixed in coal gas, when coal gas recycle or later use before by coal gas cooled dehydrated and chemistry must be passed through
(such as low-temp methanol washing coal gas) is purified by CO in coal gas2And H2S is removed, and makes H in coal gas2S contents are less than 0.1%, CO2Content
Less than 1%.
Following reaction occurs for reduction process：
Fe2O3+3H2=2Fe+3H2O
Fe2O3+ 3CO=2Fe+3CO2
FeO+H2=Fe+H2O
FeO+CO=Fe+CO2
Fe+H2S=FeS+H2
According to embodiment of the present utility model, with reference to figure 3, dust outlet 204, particle outlet 403 and dust granules outlet
At least one of 502 are connected with pre-reduced iron miberal powder entrance 102, and the dust suitable for coal gas quenching column is obtained, whirlwind point
At least one of dust granules that the particle and ceramic filter obtained from device obtains are supplied to reaction tower.Thus, can be notable
Increase the recovery utilization rate of Iron Ore Powder.
According to embodiment of the present utility model, with reference to figure 4, purification gas exit 702 is hit with cooled coal gas entrance 202, second
At least one of flow nozzle 301 and pre-reduced iron miberal powder entrance 102 is hit to be connected, and the purification suitable for gas purification tower is obtained
Coal gas at least one of is supplied to the second impinging stream nozzle in coal gas quenching column and prereduction tower.Thus, it is remarkably improved
The production efficiency of whole system.
According to embodiment of the present utility model, with reference to figure 5, above-mentioned DRI, building materials, the system of Coal (syngas) polygeneration
Further comprise：High temperature casting apparatus 800.
According to the utility model embodiment, high temperature casting apparatus 800 is connected with slag liquid outlet 105.Specifically, molten bath is discharged
Slag be directly entered high temperature casting apparatus and carry out high temperature founding, produce artificial stone, while reclaim high-temperature slag sensible heat, artificial stone enters
One step processing building and ornament materials (building material product), realize that system solid waste utilizes, and reduce gasification Heisui River yield.
Thus, it is possible to increase economic efficiency.
According to embodiment of the present utility model, above-mentioned DRI, building materials, the system of Coal (syngas) polygeneration at least have
At least one of following advantages：
According to the DRI of the utility model embodiment, building materials, Coal (syngas) polygeneration system, coal dust gasification process
Using airspace engine impinging stream nozzle principle, coal dust and oxygen stream are hit at a certain angle, realize that oxygen and coal dust are quick
Mixing, accelerate the reaction speed of oxygen and coal dust, form piston flow reactor form, reduce flow field back-mixing.In laminar flow section (also
Former section) spray into through pre-reduced iron miberal powder, reduction of iron ore fines degree can be improved, while utilize the sensible heat of coal gas of high temperature to prereduction iron ore
Powder is reduced and realizes molten point of slag iron, and reduces the outlet temperature of the first coal gas, energy-saving, reduces the generation of waste water
Amount；
According to the DRI of the utility model embodiment, building materials, Coal (syngas) polygeneration system by former reaction tower bottom
The slag Quench section in portion is changed to molten segmentation, realizes molten point of slag iron, and can each discharge；
According to the molten segmentation discharge of the system of the DRI of the utility model embodiment, building materials, Coal (syngas) polygeneration
Slag liquid can directly carry out high temperature founding, produce artificial stone, while the sensible heat of recyclable high temperature slag liquid.Artificial stone can be processed further
Building and ornament materials are produced, realize that system solid waste utilizes, and reduce the yield in gasification Heisui River in reaction tower, melt segmentation row
The molten iron gone out founding or can further refine special steel；
Entered instead in Iron Ore Powder according to the system of the DRI of the utility model embodiment, building materials, Coal (syngas) polygeneration
Answer stokehold to enter prereduction tower first and carry out prereduction, be remarkably improved the reduction degree and degree of metalization of system Iron Ore Powder, enter simultaneously
One step utilizes gas heat, further reduces the outlet temperature of coal gas, improves the thermal efficiency of system；
Entered according to the coal gas of system first of the DRI of the utility model embodiment, building materials, Coal (syngas) polygeneration
Coal gas quenching column is introduced into before prereduction tower, it is Celsius that the temperature of the coal gas of high temperature first is down into 900 using the cooled coal gas after purification
Degree left and right, thus, avoids Iron Ore Powder bond vitrified in prereduction tower, while add the reduction of coal gas in prereduction tower
Degree, and then increase the degree of metalization of Iron Ore Powder；
Prereduction tower is gone out according to the system of the DRI of the utility model embodiment, building materials, Coal (syngas) polygeneration
Second coal gas can significantly reduce the solid content in coal gas, reduce follow-up coal gas and wash through cyclone separator and ceramic filter dedusting
The water consumption of tower is washed, while reduces the treating capacity of system waste water；
Pre- go back is entered according to the system Iron Ore Powder of the DRI of the utility model embodiment, building materials, Coal (syngas) polygeneration
Second shock nozzle of former tower uses percussion flow form, adds the scattered effect of gas-solid, can shorten the reaction time, reduces reaction
Body accumulates, and reduces system investments.
In order to facilitate understanding, implement DRI, building materials, the method for Coal (syngas) polygeneration to use said system below
It is described in detail, according to embodiment of the present utility model, with reference to figure 6, this method includes：
S100：Oxygen and coal dust are supplied to the gasification section of reaction tower through the first impinging stream nozzle, by pre-reduced iron miberal powder
Supply to the reduction section of reaction tower so that gasified, reduced and melted a point reaction in reaction tower
In the step, oxygen and coal dust are supplied to the gasification section of reaction tower through the first impinging stream nozzle, by pre-reduced iron
Miberal powder is supplied to the reduction section of reaction tower so that is gasified, reduced and melted a point reaction in reaction tower, to obtain the first coal
Gas, slag liquid and molten iron.Specifically, oxygen and coal dust are supplied to the gasification section of reaction tower, coal dust gas through the first impinging stream nozzle
Change also Primordial Qi of the generation containing carbon monoxide and hydrogen, the also Primordial Qi containing carbon monoxide and hydrogen is gone back with spraying into the pre- of reduction section
Former Iron Ore Powder carries out contact and carries out reduction treatment, and it is further reduced using the also sensible heat of Primordial Qi and its reproducibility, obtained
To pure iron and slag liquefy at high temperature, come downwards to the molten segmentation of reaction tower by gravity, realize molten iron and slag-liquid separation.
Inventor has found, by reaction tower gasification section using impinging stream nozzle principle by coal dust and oxygen at a certain angle
Hit to realize the quick mixing of coal dust and oxygen, accelerate the reaction speed of coal dust and oxygen, while form piston flow reactor
Form, to reduce flow field back-mixing, by being passed through pre-reduced iron miberal powder in reaction tower reduction section, it is remarkably improved the reduction of Iron Ore Powder
Degree, and pre-reduced iron miberal powder is further reduced using the sensible heat of coal gas of high temperature caused by gasification section, reduce simultaneously
The temperature of first coal gas, it is energy-saving, reduce the yield of coal gas cooling waste water.Tapered contracting is provided with the first gas exit
Mouthful, the Dust Capacity in the first coal gas can be substantially reduced.Molten segmentation is set in the bottom of reaction tower, realize slag iron molten point, and then
Realize the follow-up recycling of molten iron and slag liquid, molten iron founding or can further refine special steel.
According to one embodiment of the present utility model, the particle diameter of coal dust is not particularly restricted, those skilled in the art
It can be selected according to being actually needed, according to a specific embodiment of the present utility model, the particle diameter of coal dust can be 10-90
Micron accounting is more than 90%.Inventor has found that the coal dust of the particle size range has preferable gasification efficiency, so as to obtain an oxidation
Carbon and hydrogen content it is high also Primordial Qi, and then improve pre-reduced iron miberal powder reduction efficiency.
According to further embodiment of the present utility model, the water content of coal dust is not particularly restricted, the technology of this area
Personnel can be selected according to being actually needed, and according to a specific embodiment of the present utility model, the water content of coal dust can be with
Less than 2wt%.Thus, it is possible to further improve the reduction efficiency of pre-reduced iron miberal powder.
According to another embodiment of the present utility model, the particular type of coal dust is not particularly restricted, the skill of this area
Art personnel can be selected according to being actually needed, according to a specific embodiment of the present utility model, coal dust can be selected from
At least one of the weakly caking coal and free-burning coal on the ground such as the shenfu coal of northern Shensi, Datong coal.
According to another embodiment of the present utility model, the condition of gasification section gasification is not particularly restricted, this area
Technical staff can be selected according to being actually needed, and according to a specific embodiment of the present utility model, the temperature of gasification can
Think 1800-2000 degrees Celsius, the time can be 1~5 second.Inventor is had found, other conditions can be significantly better than under the conditions of being somebody's turn to do
The gasification efficiency of coal dust is improved, so as to further improve the reduction efficiency of pre-reduced iron miberal powder.
According to another embodiment of the present utility model, coal dust is with oxygen, the mass ratio of pre-reduced iron miberal powder not by spy
Do not limit, those skilled in the art can be selected according to being actually needed, according to one of the present utility model specific implementation
Example, coal dust and oxygen ratio are (450~650) kg/ (300~420) m3, pre-reduced iron miberal powder and coal gas mass ratio can be
((0.5~2) t/1000m3.Inventor has found that coal dust and oxygen ratio are suitable, effective gas CO+H in coal gas2Content is high, efficiency of carbon con version
Height, be advantageous to reduction of iron ore fines and coal gas later use, coal/oxygen is than reducing, CO in coal gas2Gas content increase, reduces coal gas
Reduction potential, be unfavorable for reduction of iron ore fines.Than reducing, reacting furnace temperature is accordingly raised coal/oxygen, and resistance to material, which corrodes, to be aggravated, but favorably
Melt and divide in slag iron.And the mixed proportion of the application is used to be advantageous to molten point of slag iron while reduction efficiency is improved.
S200：First coal gas is supplied and exchanged heat into coal gas quenching column with cooled coal gas
In the step, the first coal gas is supplied and exchanged heat into coal gas quenching column with cooled coal gas, after obtaining heat exchange
Coal gas and dust.Inventor has found, before prereduction tower the first gas reduction Iron Ore Powder is fed to, in advance using cooled coal gas
Quench heat exchange is carried out to the first coal gas, thus can further reduce the dust content in coal gas after exchanging heat, while be stripped of H2O and
CO2, so as to improve heat exchange after coal gas reproducibility, and then improve Iron Ore Powder prereduction rate, while can reduce heat exchange after coal gas
Temperature, avoid Iron Ore Powder bond vitrified in prereduction tower.
According to one embodiment of the present utility model, the mixed volume ratio of cooled coal gas and the first coal gas is not limited especially
System, those skilled in the art can be selected according to being actually needed, cold according to a specific embodiment of the present utility model
The mixed volume of coal gas and the first coal gas ratio can be 0.5~0.7：1.Inventor's discovery, cooled coal gas and the first coal gas mixture
For product than high, the gas temperature into prereduction tower is low, and it is powder pre-reduced to be unfavorable for iron ore, but the two ratio it is too low can cause to enter it is pre-
Reducing gas temperature is too high and causes Iron Ore Powder to soften.Thus, it can ensure that Iron Ore Powder is pre- using the mixed proportion of the application
The softening of Iron Ore Powder is avoided while percent reduction is high.
According to further embodiment of the present utility model, the temperature of coal gas is not particularly restricted after cooling, this area
Technical staff can be selected according to being actually needed, according to a specific embodiment of the present utility model, coal gas after cooling
Temperature can be not more than 1000 degrees Celsius.
S300：Coal gas after Iron Ore Powder and heat exchange is supplied to prereduction tower through the second impinging stream nozzle and carries out pre-reduction treatment
In the step, coal gas after Iron Ore Powder and heat exchange is supplied to prereduction tower through the second impinging stream nozzle and carries out prereduction
Processing, to obtain pre-reduced iron miberal powder and the second coal gas, and pre-reduced iron miberal powder is supplied into S100 through Geldart-D particle
Reaction tower.Inventor has found that Iron Ore Powder is introduced into prereduction tower and carries out pre-reduction treatment, a side in advance before reaction tower is entered
It can improve the heat utilization efficiency of whole system further using the sensible heat of coal gas after heat exchange, be on the other hand remarkably improved reaction in face
The degree of metalization of reduction efficiency and Iron Ore Powder in tower.In prereduction tower, by Iron Ore Powder and changed using impinging stream nozzle principle
Coal gas hits to realize Iron Ore Powder and the quick mixing of coal gas after heat exchange at a certain angle after heat, accelerates Iron Ore Powder and coal after heat exchange
The reaction speed of gas, shorten the reaction time, while reduce reactor volume, reduce system investments.
According to one embodiment of the present utility model, the granularity of Iron Ore Powder is not particularly restricted, those skilled in the art
Member can be selected according to being actually needed, and according to a specific embodiment of the present utility model, the granularity of Iron Ore Powder can be
10~90 μm.Inventor has found that iron ore Powder Particle Size, which reduces, is advantageous to gas-solid reaction, accelerates reduction of iron ore fines, is advantageous to pneumatic transporting
Send；But granularity further reduces gas solid separation difficulty, dust content is high in coal gas, aggravates follow-up gas purification investment.Thus, adopt
Cost of investment can be reduced with the Iron Ore Powder of the granularity of the application while reduction of iron ore fines rate is improved.
According to further embodiment of the present utility model, the particular type of Iron Ore Powder is not particularly restricted, this area
Technical staff can be selected according to being actually needed, and according to a specific embodiment of the present utility model, Iron Ore Powder can be
Selected from least one of Australian imported iron ore fines, Brazilian imported iron ore, Anshan, liaoning Province iron ore, Hebei Qian'an iron ore.
According to another embodiment of the present utility model, the mixing quality of Iron Ore Powder and coal gas after cooling is not than by special
Limitation, those skilled in the art can be selected according to being actually needed, according to a specific embodiment of the present utility model,
Iron Ore Powder and the mixing ratio of coal gas after cooling can be 0.5t：1000m3.Inventor has found, if Iron Ore Powder and coal gas ratio are high
When, reduction temperature can reduce, and reduce reduction of iron ore fines speed, and gas-solid dispersion effect is bad, or even reduction tolerance deficiency, iron ore
Powder is insufficient with reducing, and aggravates final reduction reactor load.
According to the DRI of the utility model embodiment, building materials, Coal (syngas) polygeneration method, by reaction tower
Gasification section uses impinging stream nozzle to hit coal dust at a certain angle with oxygen to realize that coal dust and the quick of oxygen mix, and accelerates
The reaction speed of coal dust and oxygen, while piston flow reactor form is formed, to reduce flow field back-mixing, and by reaction tower
Reduction section sprays into pre-reduced iron miberal powder, is remarkably improved the reduction degree of Iron Ore Powder, and using coal gas of high temperature caused by gasification section
Sensible heat pre-reduced iron miberal powder is further reduced, while reduce the first coal gas temperature, it is energy-saving, reduce coal gas
The yield of cooling waste water, while taper necking is arranged between reduction section and fusing section, and the first gas exit is arranged
On the reaction tower of taper necking side-walls, the Dust Capacity in the first coal gas can be substantially reduced, and in the bottom of reaction tower
Molten segmentation is set, and the reduzate that reduction section obtains enters molten point that slag iron is realized in molten segmentation under gravity, and then realizes
The follow-up recycling of molten iron and slag liquid, molten iron founding or can further refine special steel, and slag liquid can be used for producing building material product,
First coal gas is supplied into prereduction tower before reduced iron miberal powder, carrying out Quench to the first coal gas using cooled coal gas in advance changes
Heat, the dust content in coal gas after exchanging heat thus can be further reduced, improve the reproducibility of coal gas after heat exchange, and then improve iron ore
The prereduction rate of powder, while the temperature of coal gas after heat exchange can be reduced, Iron Ore Powder bond vitrified is avoided in prereduction tower, secondly iron
Miberal powder is introduced into prereduction tower and carries out pre-reduction treatment in advance before reaction tower is entered, after on the one hand further can utilizing heat exchange
The sensible heat of coal gas, improves the efficiency of utilization of whole system, the percent reduction being on the other hand remarkably improved in reaction tower, in addition,
In prereduction tower, impinging stream nozzle is used to hit coal gas after Iron Ore Powder and heat exchange at a certain angle to realize Iron Ore Powder and change
The quick mixing of coal gas after heat, accelerate Iron Ore Powder and the reaction speed of coal gas after heat exchange, shorten the reaction time, while reduce reaction
Body accumulates, and reduces system investments.
According to embodiment of the present utility model, with reference to figure 7, the method for above-mentioned processing Iron Ore Powder further comprises：
S400：The second coal gas obtained in S300 is supplied into cyclone separator and carries out separating treatment
In the step, the second coal gas obtained in S300 is supplied into cyclone separator and carries out separating treatment, so as to
Gas and particle after to dedusting.Inventor has found that being supplied by the second coal gas for obtaining prereduction tower can be with to cyclone separator
The dust in the second coal gas is removed, can reduce the solid content in the second coal gas, and then that reduces follow-up scrubber uses water
Amount, reduce the wastewater treatment capacity of system.It should be noted that the series of cyclone separator is not particularly restricted, this area
Technical staff can be selected according to being actually needed, and can be two-stage series connection for example, with reference to figure 2.
S500：Gas after dedusting is supplied into ceramic filter and carries out filtration treatment
In the step, gas after dedusting is supplied into ceramic filter and carries out filtration treatment, so as to obtain dust granules and
Gas after filtering.Inventor has found that being supplied by gas after the dedusting that obtains cyclone separator can be further to ceramic filter
Dust after removing dedusting in gas, the solid content after reduction dedusting in gas, and then the water consumption of scrubber is further reduced,
The wastewater treatment capacity of reduction system.
S600：Gas after filtering is supplied into scrubber to contact with water and carries out carrying out washing treatment
In the step, gas after filtering is supplied into scrubber progress carrying out washing treatment is contacted with water, to obtain water
Gas after washing.Specifically, gas is passed through from the bottom of scrubber after filtering, water sprays into from the middle and upper part of scrubber, filtering
Gas can be further purified in the presence of water afterwards, remove the dust in gas, gas after being washed after filtering.Need what is illustrated
It is that the water of gas can reuse after simple stand after washing and filtering, so can further reduce the dosage of water, and then reduce
The treating capacity of whole technique waste water.
S700：Gas after washing is supplied into gas purification tower and carries out purified treatment
In the step, gas after washing is supplied into gas purification tower and carries out purified treatment, to be purified coal gas.Tool
Body, gas after washing is passed through in gas purification tower and carries out desulfurization and carbonization treatment successively, is purified coal gas.Specifically, contain
CO+H2Coal gas in prereduction and whole reduced iron miberal powder process, iron oxide and CO, iron oxide and H occurs2Etc. course of reaction, reaction
As a result iron and H are generated2O and CO2Sulphur in coal is converted into H by oxidizing gas, coal gasification course2S, COS is mixed in coal gas,
When coal gas recycle or later use before must by coal gas cooled dehydrated and by chemical cleaning method (such as low-temp methanol wash coal
Gas) by CO in coal gas2And H2S is removed, and makes H in coal gas2S contents are less than 0.1%, CO2Content is less than 1%.
Following reaction occurs for reduction process：
Fe2O3+3H2=2Fe+3H2O
Fe2O3+ 3CO=2Fe+3CO2
FeO+H2=Fe+H2O
FeO+CO=Fe+CO2
Fe+H2S=FeS+H2
According to embodiment of the present utility model, with reference to figure 8, the above method further comprises：Dust that S200 is obtained,
At least one of dust granules that the particle and S500 that S400 is obtained obtain are supplied to the reaction tower in S100.Thus, can show
The recovery utilization rate of increase Iron Ore Powder is write, and then improves the content of molten iron in reaction tower.Thus, returning for Iron Ore Powder can be dramatically increased
Receive utilization rate.
According to embodiment of the present utility model, with reference to figure 9, the above method further comprises：The purification coal that S700 is obtained
Gas supplies at least one of second impinging stream nozzle in coal gas quenching column and S300 into S200.Thus, can significantly carry
The production efficiency of high whole technique.Thus, it is remarkably improved the production efficiency of whole system.
According to embodiment of the present utility model, with reference to figure 9, the above method further comprises：
S800：The slag liquid that S100 is obtained supplies prepares building material product into high temperature casting apparatus
During being somebody's turn to do, specifically, the slag of molten bath discharge, which is directly entered high temperature casting apparatus, carries out high temperature founding, production is artificial
Stone, while high-temperature slag sensible heat is reclaimed, artificial stone is processed further producing building and ornament materials (building material product), and the system of realization is consolidated
It is useless to utilize, and reduce gasification Heisui River yield.Thus, it is possible to increase economic efficiency.
It should be noted that it is above-mentioned for DRI, building materials, Coal (syngas) polygeneration system described by feature and
Advantage is equally applicable to the DRI, building materials, the method for Coal (syngas) polygeneration, and here is omitted.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present utility model.In this manual, to the schematic table of above-mentioned term
State and be necessarily directed to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be with
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 the different embodiments or example and the feature of different embodiments or example described in this specification can be entered
Row combines 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 the scope of the utility model
It is interior above-described embodiment to be changed, changed, replaced and modification.
Claims (5)
- A kind of 1. system of DRI, building materials, Coal (syngas) polygeneration, it is characterised in that including：Reaction tower, limit gasification section, reduction section and molten segmentation, the gasification section arrangement in the reaction tower successively from top to bottom There is the first impinging stream nozzle of supply oxygen and coal dust, the reduction section is disposed with pre-reduced iron miberal powder entrance, the reduction section Taper necking is disposed between the molten segmentation, the first coal gas is disposed with the reaction tower of the taper necking side-walls Outlet, the molten step-by-step arrangement have slag liquid outlet and molten iron outlet；Coal gas quenching column, the coal gas quenching column have gas exit and dust after the first gas entry, cooled coal gas entrance, heat exchange Outlet, first gas entry are connected with first gas exit；Prereduction tower, the prereduction tower have supply Iron Ore Powder and the second impinging stream nozzle of coal gas, the second gas exit and Pre-reduced iron miberal powder exports, and second impinging stream nozzle is connected with gas exit after the heat exchange, the pre-reduced iron miberal powder Outlet is connected with the pre-reduced iron miberal powder entrance.
- 2. system according to claim 1, it is characterised in that further comprise：Cyclone separator, the cyclone separator have gas outlet and particle outlet after gaseous mixture entrance, dedusting, the gaseous mixture Entrance is connected with second gas exit；Ceramic filter, the ceramic filter has gas entrance after dedusting, gas exports after dust granules outlet and filtering, described Gas entrance is connected with gas outlet after the dedusting after dedusting；Scrubber, the scrubber exports with gas after gas entrance, water inlet and washing after filtering, after the filtering Gas entrance is connected with gas outlet after the filtering；Gas purification tower, the gas purification tower have gas entrance and purification gas exit after washing, gas entrance after the washing It is connected with gas outlet after the washing.
- 3. system according to claim 2, it is characterised in that the dust outlet, the particle outlet and the dust At least one of particle outlet is connected with the pre-reduced iron miberal powder entrance.
- 4. system according to claim 2, it is characterised in that the purification gas exit and the cooled coal gas entrance, institute At least one of the second impinging stream nozzle and described pre-reduced iron miberal powder entrance is stated to be connected.
- 5. system according to claim 2, it is characterised in that further comprise：High temperature casting apparatus, the high temperature casting apparatus are connected with slag liquid outlet.
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