CN207002778U - A kind of Lurgi gasifying gas produces the device of DRI through dual turn over metaplasia - Google Patents
A kind of Lurgi gasifying gas produces the device of DRI through dual turn over metaplasia Download PDFInfo
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- CN207002778U CN207002778U CN201720845463.7U CN201720845463U CN207002778U CN 207002778 U CN207002778 U CN 207002778U CN 201720845463 U CN201720845463 U CN 201720845463U CN 207002778 U CN207002778 U CN 207002778U
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Abstract
The utility model provides the device that a kind of Lurgi gasifying gas produces DRI through dual turn over metaplasia, and described device includes the gentle base reduction shaft furnace of Lurgi gasification furnaces, dedusting wash mill, desulfurization and decarburization device, regulator, reforming device being sequentially connected.In the utility model, as caused by Lurgi gasification furnaces coal gas by dedusting washing, desulfurization and decarburization, it is reforming after be passed through in gas-based reduction shaft furnace pellet reduced, obtain reducing metal iron.The utility model with fixed bed pressured gasification stove, reforming device and gas-based reduction shaft furnace by being combined, the effective integration of Coal Gasification Technology, gas reforming technology, gas purification technology and reduction shaft furnace technology can be realized, there is provided a kind of device of the coal gas production DRI with more high material and energy utilization rate.
Description
Technical field
The utility model belongs to DRI production technical field, is related to a kind of Lurgi gasifying gas through dual turn over
Metaplasia produces the device of DRI, more particularly to one kind with coal gas caused by Lurgi gasification furnaces and Midrex/PERED gas
Base reduction shaft furnace combines the device of production DRI.
Background technology
DRI (DRI) refers to the process of reduction of iron ore under less than fusion temperature into sponge iron.With biography
System blast furnace iron-making method is compared, and eliminates the processes such as coking, sintering, with flow is short, pollution is small, consumes less, not by high-quality refining
The advantages that coking coal shortage influences.The objectionable impurities content such as sulphur, phosphorus, silicon is low in DRI simultaneously, and it is excellent to be advantageous to electric furnace smelting
The pure steel grade of matter.
The research of gas-based shaft kiln technology since the Midrex technology companys in 1936, DRI technology development existing 80
History for many years.External commercialized Direct Reducing Iron Process has Midrex, HyL, PERED etc..The production of external DRI
The pellet mainly prepared using natural gas and Iron concentrate is raw material, and based on natural gas, DRI technology master reduces in shaft furnace
Iron ore produces DRI.
China is the deficient country of natural gas resource, from the yield to Chinese current and following natural gas, Consumption forecast
From the point of view of analysis, using natural gas as gas base directly reducing iron process gas primary raw material, difficult more, cost is higher, from economy
Property consider almost there is no feasibility.In China, the cheap source of the gas that can substitute natural gas is found for DRI production, it is right
It is significant to capture gas base directly reducing iron technical barrier.
Based on the national conditions of the few gas of middle national wealth coal, coal chemical industry is with a long history in Chinese development, almost all coal system in the world
Gas technique has practice to attempt in China, coal gas technique relative maturity.It is used for using mill coal inferior production coal gas direct
Reduced iron, source of the gas cost is greatly reduced, be applied for gas-based shaft kiln technology in China and opportunity is provided.At present, coal gasification skill
Art is broadly divided into fixed bed, fluid bed, three kinds of air flow bed.Fixed bed is divided into atmospheric gasification, and (such as UGI stoves, the technology is due to pollution
Seriously tend to be superseded) and pressurized gasification (the Lurgi stoves of such as dry ash extraction and the BGL stoves of slag tap).
Table 1 lists the typical coal gas composition of Lurgi gasification technologies.Compared with fluid bed or air-flow bed technique, fixed bed
Condensation technique goes for particle size range 5mm~50mm lump coal, it is not necessary to complicated coal-grinding or coal preparation technology.
The static bed coal gasification technique representative gases of table 1 form
US 4205830 and US 4225340 discloses a kind of method and dress that DRI is produced using coal gas
Put, coal, oxygen and water vapour are reacted in coal gasifier, also Primordial Qi is passed through shaft furnace, and a top gas part is used as fuel,
A part of circularly removing CO2Reheat afterwards and be mixed into shaft furnace with coal gas.Lime (CaO) is added in coal gasifier to be used to remove
Sulfide.CH in the gas componant that the patent provides4Content is below 0.3%, it is clear that to caused by processing static bed coal gasification
High CH4The coal gas of content (8% or so) is less applicable；And CaO is added in coal gasification apparatus, preferable desulfurization can not be reached
Effect, it is difficult to meet gas emission request instantly.
CN 203034041U disclose it is a kind of using coal gasification gas and gas-based shaft kiln directly reduced metallurgical system,
Give coal gasification, wash, the basic procedure of hydrosphere transformation, desulfurization and decarburization to reduction shaft furnace, but the patent does not provide reality
Details is applied, is only worth with theoretical reference；And the patent does not consider the recycling of top gas after reduction, for being gone back after reaction
There are a large amount of CO/H2Top gas it is clearly inappropriate directly as fume treatment.
CN 1141402C disclose a kind of device that sponge iron is produced using water coal slurry pressure gasification.The patent selects moral
Scholar's Gu stove, by gas conversion, NHD purifications, by being communicated to shaft furnace after two heating stove heats in parallel.This method can be applied
Reclaimed in high sulfur content coal, and to sulphur.But Texaco stove invests high, gasification pressure relative to fixed bed coal gasifier
Power is high；And directly by the way of the laggard shaft furnace of the heated stove heat of gas, CO gasification carburization reactions easily occur, damage boiler tube
Cause adverse consequences.
To sum up, the national conditions of the few gas of China's richness coal cause the technology gesture of China's development coal gas production DRI must
OK.Select suitable Coal Gasification Technology, gas reforming technology, gas purification technology, reduction shaft furnace technology, and by above-mentioned technology
It is urgent problem to be solved to carry out preferably integrated.
Utility model content
For the above-mentioned problems in the prior art, the purpose of this utility model is the provision of a kind of Lurgi gasifications
Gas produces the device of DRI through dual turn over metaplasia.The utility model passes through with fixed bed pressured gasification stove (Lurgi gas
Change stove) combined with reforming device and gas-based reduction shaft furnace, it is possible to achieve Coal Gasification Technology, gas reforming technology, coal gas
The effective integration of purification techniques and reduction shaft furnace technology, improve material and utilizing for the energy in direct-reduction metallurgical plant and imitate
Rate.
To use following technical scheme up to this purpose, the utility model：
In a first aspect, the utility model provides a kind of Lurgi gasifying gas produces DRI through dual turn over metaplasia
Device, described device include be sequentially connected Lurgi gasification furnaces, dedusting wash mill, desulfurization and decarburization device, regulator,
The reforming gentle base reduction shaft furnace of device.
In the utility model, fixed bed pressured gasification stove (Lurgi coal gasifiers) and powder coal gasification furnace or water-coal slurry furnace phase
Than investing relatively low, stable operation, it is not necessary to complicated standby device for coal, less pollution.And with fluid bed or air-flow bed technique phase
Than going for particle size range 5mm~50mm lump coal, it is not necessary to complicated coal-grinding or coal preparation technology；CH in synthesis gas4Content
Higher, typically more than 8%, the carbon content that iron product is reduced to increase in production DRI is favourable；Also, pass through
It is follow-up double reforming, the H in synthesis gas can be improved2With CO contents, so as to improve reduced iron yield.
The preferable technical scheme of the utility model is used as below, but not as the limit of technical scheme provided by the utility model
System, by the following technical programs, can preferably reach and realize technical purpose and beneficial effect of the present utility model.
As the preferable technical scheme of the utility model, the dedusting wash mill is scrubbing tower；The dedusting washing dress
The effect put is to carry out dedusting and cooling to the raw gas of Lurgi gasification furnaces synthesis, just with subsequently carrying out desulfurization and decarburization.
As the preferable technical scheme of the utility model, the desulfurization and decarburization device includes desulfurizer and decarbonization device；
The sulfide containing material of the desulfurization and decarburization device is connected with sulfur recovery facility
The desulfurizer is fine de-sulfur device, and decarbonization device is part decarbonization device, and it makes the coal gas after purification
In also retain a small amount of CO2, to be used as raw material and CH4Carry out double reforming reactions；Meanwhile it can have the function that to reduce carbon emission.Institute
The methods of sulfur recovery facility uses Claus method is stated to reclaim sulphur in coal gas.
As the preferable technical scheme of the utility model, the regulator uses turbine；The regulator goes out
Gas port is connected with the unstripped gas entrance of reforming device and the fuel inlet of reforming device.Regulator is handled
Decompression coal gas afterwards is divided into two parts, and a part enters reforming device as unstripped gas and carries out reforming reaction, separately
A part is connected as fuel with the burner of reforming device, supplies and reforms as fuel in driving or unavailable top gas
Reforming unit.
As the preferable technical scheme of the utility model, the reforming device is double reforming stoves, and it includes water
Steam injection device.
Wherein, anti-carbon catalyst can be also filled with reforming device, on the one hand avoids common heating furnace and easily send out
The problem of raw CO disproportionated reactions cause metallized carbon dirt, on the other hand improve CO compared with simple steam reformation2Utilization rate,
Reduce CO2Discharge, reduce decarbonization device load.
As the preferable technical scheme of the utility model, the gas-based reduction shaft furnace is Midrex reduction shaft furnaces or PERED
Reduction shaft furnace；The gas-based reduction shaft furnace is provided with pellet entrance, synthesis gas inlet, top gas outlet and reduced iron outlet.
As the preferable technical scheme of the utility model, described device also includes top gas wash mill and top gas compresses
Device, the top gas outlet of the gas-based reduction shaft furnace are connected with the gas access of top gas wash mill, furnace roof gas washing dress
The gas vent put is connected with the gas access of top gas compression set and the fuel inlet of reforming device respectively, top gas
The gas vent of compression set is connected with the gas access of desulfurization and decarburization device.
I.e. top gas caused by gas-based reduction shaft furnace it is scrubbed after be divided into two parts, a part is as reforming device
Fuel, desulfurization and decarburization device is mixed into coal gas after a part of compressed device compression, carries out the de- of sulphur and carbon dioxide
Remove.
The utility model, top gas caused by gas-based reduction shaft furnace is recycled, can be with optimizing regulation raw gas
H2With CO contents, the utilization ratio of raising raw material coal gas.
As the preferable technical scheme of the utility model, the combustion product gases outlet of the reforming device and flue gas heat exchange
Device is connected；The smoke heat replacing device includes waste heat boiler and combustion air pre-heater, and the combustion air pre-heater can be set
After useless pot, the energy is saved by improving combustion air temperature.The steam outlet of the smoke heat replacing device respectively with again
The steam entry of whole reforming unit is connected with Lurgi gasification furnace steam entries.I.e. by the combustion product gases of reforming unit
Heat is reclaimed, with heating boiler aquatic products heat steam, for Lurgi gasification furnaces and reforming device；Meanwhile to compression
Air is heated, and hot-air is provided for reforming unit.
The processing method of described device is：
(1) feed coal carries out gasification reaction generation raw gas in Lurgi gasification furnaces with oxygen and water vapour；
(2) after step (1) described raw gas enters dedusting wash mill removing dust and washing, enter into desulfurization and decarburization device
Row desulfurization and decarburization, it is purified rear coal gas；
(3) coal gas enters the double reforming reactions of reforming device progress after step (2) described purification, and generation height is also
Former synthesis gas；
(4) step (3) described synthesis gas enters the pellet counter current contacting with addition in gas-based reduction shaft furnace, is reduced
Reaction, generate reduced iron.
In the utility model, the reforming reaction is double reforming reactions, including：
CH4+CO2=2CO+2H2
CH4+H2O=CO+3H2
The beneficial effects of the utility model are：
(1) fixed bed pressured gasification stove (Lurgi coal gasifiers) is used in the utility model, with coal gasification or water-coal-slurry
Gasification furnace compares its relatively low, stable operation of investment, it is not necessary to complicated standby device for coal, less pollution.
(2) common steam reformer is substituted with double reforming stoves in the utility model, it is possible to increase CO2Utilization rate, drop
Low decarbonization device load, reduce carbon emission.
(3) in the utility model by the way of furnace roof gas washing Posterior circle participates in reaction, the profit of raw material coal gas is improved
Use efficiency；Waste heat boiler and combustion air pre-heater are set to reforming reacting furnace, reclaimed obvious heat of smoke, byproduct steam can coal supply
Gasification furnace and reforming stove use, and improve material and efficiency of energy utilization.
(4) in the utility model, using Lurgi coal gasifier combinations Coal Gasification Technology, gas reforming technology, gas purification
The gentle base reduction shaft furnace technology of technology, the limitation of natural gas in gas base directly reducing method can be overcome, improve production directly also
The yield of former iron, production cost can be reduced.
Brief description of the drawings
Fig. 1 is the dress that Lurgi gasifying gas described in the utility model embodiment 1 produces DRI through dual turn over metaplasia
The structural representation put；
Wherein, 1-Lurgi gasification furnaces, 2- dedusting wash mills, 3- desulfurization and decarburization devices, 4- regulators, 5. reformations turn
Makeup is put, 6- gas-based reduction shaft furnaces, 7- top gas wash mills, 8- top gas compression sets, 9- smoke heat replacing devices, 10- sulphur
Sulphur retracting device.
Embodiment
For the utility model is better described, the technical solution of the utility model is readily appreciated, below to the utility model
It is further described.But following embodiments is only simple example of the present utility model, does not represent or limit this practicality
New rights protection scope, scope of protection of the utility model are defined by claims.
The utility model specific embodiment mode part provides a kind of Lurgi gasifying gas and produced directly through dual turn over metaplasia
Connect the device and its processing method of reduced iron, Lurgi gasification furnaces 1 that described device includes being sequentially connected, dedusting wash mill 2,
The gentle base reduction shaft furnace 6 of desulfurization and decarburization device 3, regulator 4, reforming device 5.
Its processing method comprises the following steps：
(1) feed coal carries out gasification reaction generation raw gas in Lurgi gasification furnaces 1 with oxygen and water vapour；
(2) step (1) the raw gas removing dust carries out desulfurization and decarburization, is purified rear coal gas with after washing；
(3) coal gas carries out double reforming reactions after step (2) described purification, generates synthesis gas；
(4) step (3) described synthesis gas enters the pellet counter current contacting with addition in gas-based reduction shaft furnace 6, is gone back
Original reaction, generates reduced iron.
It is below the utility model typical case but non-limiting example：
Embodiment 1：
Present embodiments provide device and its place that a kind of Lurgi gasifying gas produces DRI through dual turn over metaplasia
Reason method, as shown in figure 1, described device includes Lurgi gasification furnaces 1, dedusting wash mill 2, the desulfurization and decarburization dress being sequentially connected
Put the gentle base reduction shaft furnace 6 of 3, regulator 4, reforming device 5；It also includes top gas wash mill 7 and furnace roof air pressure
Compression apparatus 8.
Wherein, the Lurgi gasification furnaces 1 are provided with lump coal feeding device, steam inlet and oxygen intake；
Dedusting wash mill 2 is scrubbing tower；
The sulfide containing material of desulfurization and decarburization device 3 is connected with sulfur recovery facility 10；
Regulator 4 uses turbine, unstripped gas entrance and reforming dress of its gas outlet with reforming device 5
5 fuel inlet is put to be connected；
Reforming device 5 is double reforming stoves, and it includes water vapour injection device；The burning of reforming device 5
Exhanst gas outlet is connected with smoke heat replacing device 9；Smoke heat replacing device 9 includes waste heat boiler and combustion air pre-heater, and flue gas changes
The steam outlet of thermal 9 enters with the steam entry and the water vapour of Lurgi gasification installations 1 of reforming device 5 respectively
Mouth is connected.
Anti-carbon catalyst is filled with reforming device 5.
Gas-based reduction shaft furnace 6 is Midrex reduction shaft furnaces, and it is provided with pellet entrance, synthesis gas inlet, top gas and gone out
Mouth and reduced iron outlet.
The top gas outlet of gas-based reduction shaft furnace 6 is connected with the gas access of top gas wash mill 7, furnace roof gas washing dress
Put 6 gas vent respectively with the gas access of top gas compression set 8 and the fuel inlet of reforming device 5 to be connected, stove
The gas vent of top gas compression set 8 is connected with the gas access of desulfurization and decarburization device 3.
Exemplified by producing 1,000,000 tons/year of DRIs, the method handled using said apparatus includes following step
Suddenly：
(1) lignite 62t/h is put into Lurgi gasification furnaces 1, to Lurgi gasification furnaces 1 feed 77t/h steam and
11045Nm3/ h oxygen, lignite carry out gasification reaction generation raw gas with oxygen and water vapour in Lurgi coal gasifiers 1, slightly
The yield of coal gas is 103132Nm3/ h, H2/ CO molar ratio is 1.7；
(2) step (1) described raw gas, which enters, carries out dedusting and washing in dedusting wash mill 2, filled into desulfurization and decarburization
3 carry out desulfurization and decarburization processing are put, total sulfur content is down to 1mg/m3Hereinafter, most of CO is removed2, CO2It is removed to 5%；Removing
Sulphur enters the Clausius equlity sulphur of sulphur recovery unit 10, to the lignite of sulfur content 2%, year 1.0 ten thousand tons of sulphur recovery amount；
(3) the coal gas 80237Nm after desulfurization and decarburization3/ h, wherein H2+ CO molar contents are 82.2%, through regulator
4 regulation pressure, will wherein 11233Nm after 2MPaG coal gases are depressurized into 0.3MPaG3/ h coal gases make fuel, turn over of attaching most importance to
5 offer heat energy are put in makeup, and by synthesis gas from low-temperature heat to 900 DEG C, remaining coal gas 69004Nm3/ h, which enters to reform, to be turned
The 5 reforming reactions of carry out are put in makeup, by CH in synthesis gas4It is converted into H2And CO, generate 83000Nm3/ h synthesis gas, wherein H2
It is 1.7, H with CO mol ratios2+ CO molar contents are 92.1%, meet Midrex shaft furnace production requirements；
(4) step (3) synthesis gas enters from the middle part of gas-based reduction shaft furnace 6, with being added from the top of gas-based reduction shaft furnace 6
188t/h pellet counter current contactings, carry out reduction reaction, generate reducing metal iron, the DRI of gas-based reduction shaft furnace 6 life
Production speed is 125t/h；The top gas of gas-based reduction shaft furnace 6 is as the waste heat boiler in thermal source and smoke heat replacing device 9 and burning
Air preheater is exchanged heat, and the heated caused water vapour of waste heat boiler, which returns, participates in gasification reaction and reforming reaction,
Preheated air participates in reforming reaction caused by combustion air pre-heater is preheated；Coal gas is avoided in gas-based reduction shaft furnace
Primary first-order equation is unable to reach material waste caused by higher conversion in 6.
In the present embodiment, coal gas and reforming anti-after raw gas, desulfurization decarbonization purification caused by each stage of reaction
Answer temperature, pressure and gas the composition example of synthesis gas as shown in table 2.
The Lurgi static bed coal gasification techniques representative gases of table 2 form
Compared with only with common heating furnace, purified gas process is double reforming, improves CH4Utilization rate, increase
Add synthesis gas reduction degree, reduce carbon distribution risk；Pass through CH4With H2O reaction generations CO+H2, effective gas output increased
34.7%, reduced iron yield 43.4t/h can be increased.
Produce and throw 1,000,000 tons/year of DRI days about 1480 tons of lignite amount, 1 day 1700 tons of coal feeding amount Lurgi gas
Change stove can meet demand, it is standby that one can be opened using one during actual production.
Embodiment 2：
Present embodiments provide device and its place that a kind of Lurgi gasifying gas produces DRI through dual turn over metaplasia
Reason method, described device structure is in the same manner as in Example 1, and difference is：The gas-based reduction shaft furnace 6 is PERED reduction shaft furnaces.
Exemplified by producing 300,000 tons/year of DRIs, the method handled using said apparatus is comprised the following steps：
(1) anthracite 14t/h is put into Lurgi gasification furnaces 1, to Lurgi gasification furnaces 1 feed 26t/h steam and
5848Nm3/ h oxygen, anthracite carry out gasification reaction generation raw gas, rough coal with oxygen and water vapour in Lurgi gas burners 1
The yield of gas is 30940Nm3/ h, H2/ CO molar ratio is 1.7；
(2) step (1) described raw gas, which enters, carries out dedusting and washing in dedusting wash mill 2, filled into desulfurization and decarburization
3 carry out desulfurization and decarburization processing are put, total sulfur content is down to 1mg/m3Hereinafter, most of CO is removed2, CO2It is removed to 5%；
(3) the coal gas 24071Nm after desulfurization and decarburization3/ h, wherein H2+ CO molar contents are 82.2%, through regulator
4 regulation pressure, will wherein 3370Nm after 2MPaG coal gases are depressurized into 0.3MPaG3/ h coal gases make fuel, are reforming
Device 5 provides heat energy, and by synthesis gas from low-temperature heat to 900 DEG C, remaining coal gas 20701Nm3/ h enters reforming
Device 5 carries out reforming reaction, will wherein CH4It is converted into H2And CO, generate 24900Nm3/ h synthesis gas, wherein H2Rubbed with CO
You are than being 1.7, H2+ CO molar contents are 92.1%, meet PERED shaft furnace production requirements；
(4) step (3) synthesis gas enters from the middle part of gas-based reduction shaft furnace 6, with being added from the top of gas-based reduction shaft furnace 6
56.4t/h pellet counter current contactings, carry out reduction reaction, generate reducing metal iron, the DRI of gas-based reduction shaft furnace 6 life
Production speed is 37.5t/h.
In the present embodiment, coal gas and conversion reaction close after raw gas, desulfurization decarbonization purification caused by each stage of reaction
Temperature, pressure and gas composition example into gas is in the same manner as in Example 1.
Compared with only with common heating furnace, purified gas process is double reforming, improves CH4Utilization rate, increase
Add synthesis gas reduction degree, reduce carbon distribution risk；Pass through CH4With H2O reaction generations CO+H2, effective gas output increased
34.7%, reduced iron yield 13.0t/h can be increased.
Produce and throw 300,000 tons/year of DRI days about 320 tons of anthracite amount, 1 day 360 tons of coal feeding amount Lurgi gas
Change stove can meet demand, it is standby that one can be opened using one during actual production.
Summary embodiment can be seen that in the utility model, using Lurgi coal gasifier combinations Coal Gasification Technology,
The gentle base reduction apparatus technology of gas reforming technology, gas purification technology, can overcome natural gas in gas base directly reducing method
Limitation, the yield of production DRI is improved, reduce production cost.
Applicant states that the utility model illustrates detailed process equipment and work of the present utility model by above-described embodiment
Skill flow, but the utility model is not limited to above-mentioned detailed process equipment and technological process, that is, does not mean that the utility model
Having to rely on above-mentioned detailed process equipment and technological process could implement.Person of ordinary skill in the field is it will be clearly understood that right
Any improvement of the present utility model, the adding of equivalence replacement and auxiliary element to each raw material of the utility model product, specific side
Selection of formula etc., within the scope of all falling within the scope of protection of the utility model and disclosing.
Claims (8)
1. a kind of Lurgi gasifying gas produces the device of DRI through dual turn over metaplasia, it is characterised in that described device bag
Include the Lurgi gasification furnaces (1) being sequentially connected, dedusting wash mill (2), desulfurization and decarburization device (3), regulator (4), reformation turn
(5) gentle base reduction shaft furnace (6) is put in makeup.
2. device according to claim 1, it is characterised in that the dedusting wash mill (2) is scrubbing tower.
3. device according to claim 1, it is characterised in that the desulfurization and decarburization device (3) includes desulfurizer and taken off
Carbon device；The sulfide containing material of the desulfurization and decarburization device (3) is connected with sulfur recovery facility (10).
4. device according to claim 1, it is characterised in that the regulator (4) uses turbine；The pressure regulation dress
The fuel inlet that the gas outlet of (4) is put with the unstripped gas entrance of reforming device (5) and reforming device (5) is connected.
5. device according to claim 1, it is characterised in that the reforming device (5) is double reforming stoves, its
Including water vapour injection device.
6. device according to claim 1, it is characterised in that the gas-based reduction shaft furnace (6) is Midrex reduction shaft furnaces
Or PERED reduction shaft furnaces；The gas-based reduction shaft furnace (6) is provided with pellet entrance, synthesis gas inlet, top gas outlet and gone back
Former iron outlet.
7. device according to claim 1, it is characterised in that described device also includes top gas wash mill (7) and stove
Top gas compression set (8), the top gas outlet and the gas access of top gas wash mill (7) of the gas-based reduction shaft furnace (6)
It is connected, the gas vent of top gas wash mill (7) gas access with top gas compression set (8) and reforming dress respectively
The fuel inlet for putting (5) is connected, the gas access phase of the gas vent and desulfurization and decarburization device (3) of top gas compression set (8)
Even.
8. device according to claim 1, it is characterised in that the reforming device (5) combustion product gases outlet with
Smoke heat replacing device (9) is connected；The smoke heat replacing device (9) includes waste heat boiler and combustion air pre-heater, the flue gas
The steam outlet of heat-exchanger rig (9) steam entry and Lurgi gasification installations (1) water with reforming device (5) respectively
Steam inlet is connected.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720845463.7U CN207002778U (en) | 2017-07-12 | 2017-07-12 | A kind of Lurgi gasifying gas produces the device of DRI through dual turn over metaplasia |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720845463.7U CN207002778U (en) | 2017-07-12 | 2017-07-12 | A kind of Lurgi gasifying gas produces the device of DRI through dual turn over metaplasia |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107151721A (en) * | 2017-07-12 | 2017-09-12 | 北京中晋中石冶金化工技术有限公司 | A kind of Lurgi gasifying gas produces the system and method for DRI through dual turn over metaplasia |
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2017
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107151721A (en) * | 2017-07-12 | 2017-09-12 | 北京中晋中石冶金化工技术有限公司 | A kind of Lurgi gasifying gas produces the system and method for DRI through dual turn over metaplasia |
| CN107151721B (en) * | 2017-07-12 | 2023-12-26 | 北京中晋中石冶金化工技术有限公司 | System and method for producing direct reduced iron by double reforming and conversion of Lurgi gasification gas |
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