CN106834579A - The system and method that a kind of natural gas tri-reforming prepares DRI - Google Patents
The system and method that a kind of natural gas tri-reforming prepares DRI Download PDFInfo
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- CN106834579A CN106834579A CN201710124126.3A CN201710124126A CN106834579A CN 106834579 A CN106834579 A CN 106834579A CN 201710124126 A CN201710124126 A CN 201710124126A CN 106834579 A CN106834579 A CN 106834579A
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- gas
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/02—Making spongy iron or liquid steel, by direct processes in shaft furnaces
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0073—Selection or treatment of the reducing gases
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
Abstract
The present invention relates to the system and method that natural gas tri-reforming prepares DRI.In the system, there is top gas to export, Primordial Qi entrance is gone back for shaft furnace；First gas unit includes the preheating device, desulfurizer, heater, the tri-reforming device that are sequentially connected, the mixed gas entrance of preheating device is connected with the top gas outlet of shaft furnace, and the also Primordial Qi outlet of tri-reforming device is connected with the also Primordial Qi entrance of shaft furnace；Second gas unit includes heater, preheating device, and the second gas entrance of heater is connected with the top gas outlet of shaft furnace, and the smoke inlet of preheating device is connected with the exhanst gas outlet of heater；There are the desulfurization and decarburization device of third gas unit third gas entrance, third gas to export, and third gas entrance is connected with the top gas outlet of shaft furnace, and third gas are exported and are connected with the also Primordial Qi entrance of shaft furnace.The present invention can avoid the methane from causing reduction reaction not smooth into there is cracking after shaft furnace, and the nickel-base catalyst of consumption is few, low production cost.
Description
Technical field
The present invention relates to metallurgical technology field, and in particular to a kind of natural gas tri-reforming prepare DRI system and
Method.
Background technology
DRI, also known as sponge iron, is a kind of important Dai Tied steel scrap and better than the steelmaking feed of steel scrap, can be dilute
The impurity element components in steel scrap are released, for electric furnace steel making provides essential pure iron material.Development of iron and steel enterprises is directly gone back
Former iron technology, the requirement that the epoch that can better adapt to develop to enterprise to densification, high efficiency, purifying direction.
2014, whole world DRI yield was 74,550,000 tons.Wherein, by accounting for that gas-based shaft kiln method is produced
80%.Typical technique includes MIDREX techniques and HYL III (Energiron) technique.
MIDREX methods, with top gas as transforming agent, obtain high-quality and reduce with natural gas as unstripped gas through reforming reaction
Gas.After top gas is through dedusting of lowering the temperature, wherein 60~70% mix with natural gas according to chemical reaction equivalent after compression, it is preheated
Device is preheated, then by the reformer equipped with Raney nickel.In reformer, the CO in natural gas and top gas2And H2O occurs
Reforming reaction, obtains 850~900 DEG C of also Primordial Qi, during the reduction pneumatic transmission then entered into shaft furnace.The acid pellet or lump ore of iron content
In shaft furnace DRI is obtained through also Primordial Qi reduction.Discharge is perpendicular after DRI is cooled down through the cooling section of shaft furnace bottom
Stove.The cooling gas of cooling section is discharged from shaft furnace, is then washed through water scrubber and after compressor pressure-raising, is sent shaft furnace recycling back to.
But, in the method, reformer involves great expense, and maintenance cost is higher.Also, the sulphur in gas can cause the reformation in reformer
Catalyst poisoning.Therefore, need strictly to control the sulfur content in ore and coal gas in the technique.
The techniques of HYL III are being reformed with natural gas and part top gas as raw material by raw natural gas, transforming agent vapor
Catalytic reforming reaction in stove produces also Primordial Qi.The also Primordial Qi produced by reformer, is filled by heat reclaim unit, washing cooling
Treatment is put, is then mixed through the top gas of washing cooling, desulfurization and decarburization with part.The heated stove heat of gaseous mixture for obtaining is extremely
900~950 DEG C, in then passing to shaft furnace, reduction-oxidation pelletizing or lump ore.But, in the technique, operating pressure is higher, to anti-
Answer the requirement of device higher.Also, the high temperature reduction gas produced by reburner, need to be through cooling de-watering reducing oxidizability, Ran Houzai
Heat temperature raising.Therefore, in technique less rationally, consume energy higher.
The content of the invention
The present invention is intended to provide the system and method that a kind of natural gas tri-reforming prepares DRI, the present invention can fill
Divide and recycle top gas, and improve the tri-reforming efficiency of methane in natural gas.
The invention provides the system that a kind of natural gas tri-reforming prepares DRI, including shaft furnace, first gas list
Unit, second gas unit, third gas unit.
There is the shaft furnace top gas to export, also Primordial Qi entrance, iron acid pellet entrance, DRI is exported.
The first gas unit includes the preheating device, desulfurizer, heater, the tri-reforming that are sequentially connected
Device.The preheating device has mixed gas entrance, and the mixed gas entrance is connected with the top gas outlet of the shaft furnace.Institute
Stating tri-reforming utensil has oxygen intake, also Primordial Qi to export, and also Primordial Qi outlet connects with the also Primordial Qi entrance of the shaft furnace
Connect.
The second gas unit includes the heater, the preheating device.The heater has the second gas
Body entrance, exhanst gas outlet, the second gas entrance are connected with the top gas outlet of the shaft furnace.The preheating device has cigarette
Gas entrance, the smoke inlet is connected with the exhanst gas outlet of the heater.
The third gas unit includes desulfurization and decarburization device, and the desulfurization and decarburization device has third gas entrance, the
Three gas vents.The third gas entrance is connected with the top gas outlet of the shaft furnace.Third gas outlet with it is described
The also Primordial Qi entrance connection of shaft furnace.
Preferably, the tri-reforming device is provided with multiple, and the multiple tri-reforming device is connected in parallel, described many
The individual tri-reforming device being connected in parallel is connected in series with the heating furnace.
Further, the wash mill, the compression set that are sequentially connected also are included in above-mentioned system, for washing, compressing
Top gas.The wash mill is connected with the shaft furnace, and the top gas outlet is provided with the compression set.
Present invention also offers a kind of method that utilization said system is prepared DRI by natural gas tri-reforming, including
Step：
The top gas of the shaft furnace discharge is divided into three parts：First gas, second gas, third gas.
The first gas are mixed with natural gas, mixed gas are obtained.The mixed gas are preheated, after desulfurization, send
Enter in the heater and heat, be then fed into the tri-reforming device, and to being passed through oxygen in the tri-reforming device
, there is tri-reforming in the tri-reforming device and obtain also Primordial Qi in gas.
The second gas are sent into the heater as fuel.
The third gas are then fed into the shaft furnace, and reduce by mixing with the also Primordial Qi after desulfurization and decarburization
Iron acid pellet in the shaft furnace, obtains DRI.
Further, the percentage that the volume of the first gas accounts for the top gas cumulative volume is 40~70%.It is described
The percentage that the volume of second gas accounts for the top gas cumulative volume is 25~40%.The volume of the third gas accounts for the stove
The percentage of top gas cumulative volume is 5~20%.
Preferably, the catalyst of the tri-reforming is nickel-base catalyst.
Further, the volume of the oxygen accounts for the 70~80% of the natural gas volume.
Further, the temperature after the mixed gas are preheated is 200~300 DEG C.
Further, the temperature after the heated device heating of the mixed gas is 500~600 DEG C.
Further, the temperature of the also Primordial Qi is 950~1050 DEG C.
In the method for the present invention, there is reforming reaction generation one and aoxidize in portion of natural gas in tri-reforming device with oxygen
Carbon and hydrogen, occur to reform instead in the presence of catalyst in remaining natural gas tri-reforming device with carbon dioxide and water vapour
Should, methane conversion can be effectively improved, it is to avoid methane causes reduction reaction not smooth into generation cracking after shaft furnace.Methane and oxygen
After generation partial oxidation, methane content reduction, when carrying out carbon dioxide and steam reformation to remaining methane, the Ni-based of consumption is urged
Agent is less, reduces production cost.
In system of the invention, multiple tri-reforming device can be set.If tri-reforming overlong time rear catalyst
Activity reduction, it is possible to achieve the replacement between different tri-reforming devices so that improve production efficiency.
Brief description of the drawings
Fig. 1 is the system schematic that embodiment of the present invention natural gas tri-reforming prepares DRI.
Fig. 2 is that the present invention is shown using the system shown in Fig. 1 by the method flow that natural gas tri-reforming prepares DRI
It is intended to.
Reference in accompanying drawing is as follows：
1st, shaft furnace；2nd, wash mill；3rd, compression set；4th, desulfurization and decarburization device；5th, preheating device；6th, desulfurizer；7、
Heater；8th, the first tri-reforming device；9th, the second tri-reforming device；10th, wash mill；11st, compression set.
Specific embodiment
Below in conjunction with drawings and Examples, specific embodiment of the invention is described in more details, so as to energy
Enough more fully understand the solution of the present invention and the advantage of its various aspects.However, specific embodiments described below and reality
It is only descriptive purpose to apply example, rather than limitation of the present invention.
As shown in figure 1, in the embodiment of the present invention natural gas tri-reforming prepare the system schematic of DRI.
System of the invention includes shaft furnace, first gas unit, second gas unit, third gas unit.
(1) shaft furnace 1 includes the reduction section on top and the cooling section of bottom.Top gas outlet, also Primordial Qi are provided with shaft furnace 1
Entrance, iron acid pellet entrance, DRI outlet.
In different embodiments of the invention, cooling gas entrance, cooling gas can be also set on the cooling section of shaft furnace 1 and
Mouthful.Wherein, cooling gas outlet is connected with the air inlet of wash mill 10.Compression set 11 is connected with wash mill 10, cools down gas
Scrubbed device 10 is passed through in compression set 11 after washing, and sends into cooling section by the cooling gas entrance of shaft furnace 1 after compression.Realize
The circulating cooling for cooling down gas is utilized.
(2) first gas unit includes the preheating device 5, desulfurizer 6, the heater 7, tri-reforming that are sequentially connected
Device.In different embodiments of the invention, multiple tri-reforming device also can be set, the first tri-reforming as shown in Fig. 1 is anti-
Answer device 8, the second tri-reforming device 9.Wherein, the plurality of tri-reforming device is connected in parallel.Also, it is the plurality of to be connected in parallel
Tri-reforming device is connected in series with heater 7, is easy to implement the replacement of tri-reforming device.Do not limited in the present invention triple
The quantity of whole reactor.
Preheating device 5 has mixed gas entrance.The mixed gas entrance is connected with the top gas outlet of shaft furnace 1.By erecting
Stove 1 discharge top gas successively preheated device 5, desulfurizer 6, heater 7 treatment after, feeding tri-reforming device in.
Oxygen intake, also Primordial Qi outlet are additionally provided with tri-reforming device, also Primordial Qi outlet should be connected with the also Primordial Qi entrance of shaft furnace 1
Connect.
(3) second gas unit includes heater 7, preheating device 5.Heater 7 has second gas entrance, flue gas
Outlet.Second gas entrance is connected with the top gas outlet of shaft furnace 1.Preheating device 5 has smoke inlet.Smoke inlet and heating
The exhanst gas outlet connection of device 7.
(4) third gas unit includes desulfurization and decarburization device 4.Desulfurization and decarburization device 4 has third gas entrance, the 3rd gas
Body is exported.Wherein, third gas entrance is connected with the top gas outlet of shaft furnace 1.Third gas are exported and entered with the also Primordial Qi of shaft furnace 1
Mouth connection.
In other embodiments of the invention, wash mill 2, compression set 3 are provided with, for washing, compressing by shaft furnace 1
The top gas of discharge.Wherein, the air inlet of wash mill 2 is connected with the top gas outlet of shaft furnace 1.It is provided with compression set 3
Top gas is exported, for compressing the scrubbed top gas discharged by wash mill 2.That is, wash mill 2 and compression set 3 can
According to different Production requirements, the further treatment to top gas is realized.
As shown in Fig. 2 being the system using shown in Fig. 1 of the invention, the side of DRI is prepared by natural gas tri-reforming
Method schematic flow sheet.
The top gas of the top of shaft furnace 1 discharge is scrubbed, be divided into three parts after compression：First gas, second gas, the 3rd gas
Body.
Wherein, first gas, second gas, the volume of third gas account for the percentage of the top gas cumulative volume and are respectively
40~70%, 25~40%, 5~20%.
(1) first gas are mixed with natural gas (main component of natural gas is methane), obtains mixed gas.Will mixing
Gas is respectively fed to preheated, desulfurization in preheating device 5, desulfurizer 6, is then fed into being heated in heater 7.Heated
Mixed gas are sent into the first tri-reforming device 8.Meanwhile, to being passed through oxygen in the first tri-reforming device 8.In mixed gas
Methane and carbon dioxide, water, oxygen there is tri-reforming in the first tri-reforming device 8, obtain also Primordial Qi.
In the method for the present invention, two or more tri-reforming devices can be set.If the reaction time is long, cause
Catalyst activity reduction, the present invention is capable of achieving the replacement between multiple tri-reforming device, so that improve production efficiency.
Tri-reforming device one end of the invention is provided with air inlet, and the part does not contain nickel-base catalyst, for carrying out
The partial oxidation of methane.And another part is only provided with nickel-base catalyst, the remaining methane in natural gas is carried out in the part
The reforming reaction of methane and carbon dioxide and methane steam.
The volume that oxygen is passed through in tri-reforming device accounts for the 70~80% of natural gas volume.
Temperature after the preheated device 5 of mixed gas is preheated is 200~300 DEG C.The temperature of heated mixed gas is
500~600 DEG C.After mixed gas are through tri-reforming device, the reduction temperature degree for obtaining is 950~1050 DEG C.
(2) second gas are sent into heater 7 as fuel, is that heater 7 provides fuel gas.
(3) by third gas feeding desulfurization and decarburization device 4.Third gas with also Primordial Qi after desulfurization and decarburization treatment by mixing
Close, be then fed into shaft furnace 1, and the iron acid pellet in reduction shaft furnace, obtain DRI.DRI is through shaft furnace 1
After cooling section cooling, shaft furnace is discharged.
After also Primordial Qi mixes with third gas, temperature is reduced to 850~900 DEG C.
In cooling section, after cooling air cooling DRI, shaft furnace is discharged.The cooling gas is sequentially sent to wash mill
10th, in compression set 11, after scrubbed, compression, send back to again in the cooling section of shaft furnace 1, used as cooling gas circulating cooling.
Embodiment 1
Natural gas mixes with first gas, obtains mixed gas.By in mixed gas feeding preheating device, temperature is by 40 DEG C
200 DEG C are risen to, after desulfurization process, 500 DEG C is heated in feeding heater.Then, the mixed gas after heating are sent into
In first tri-reforming device, meanwhile, oxygen is passed through thereto.The volume of oxygen is the 70% of natural gas volume.Mixed gas
There is tri-reforming in the first tri-reforming device with oxygen, obtain also Primordial Qi, reduction temperature degree is 900 DEG C.Also Primordial Qi
After mixing through the third gas of desulfurization and decarburization, temperature is 850 DEG C, and sends into reduced iron acid pellet in shaft furnace, is made steel
Use DRI.In reduction process, by shaft furnace discharge top gas it is scrubbed, dehydration, compression after, be divided into according to volume accounting
Three parts：60% mixes as the first gas in the present embodiment with natural gas, and 35% used as the second gas in the present embodiment
It is passed through heater and does fuel gas, 5% used as the third gas in the present embodiment.Direct-reduction below cooling air cooling shaft furnace
After iron, shaft furnace is discharged, sending cooling section circulating cooling back to after then scrubbed, compression uses.
Embodiment 2
Natural gas mixes with first gas, obtains mixed gas.By in mixed gas feeding preheating device, temperature is by 30 DEG C
220 DEG C are risen to, after desulfurization process, 550 DEG C is heated in feeding heater.Then, the mixed gas after heating are sent into
In second tri-reforming device, meanwhile, oxygen is passed through thereto.The volume of oxygen is the 75% of natural gas volume.Mixed gas
There is tri-reforming in the second tri-reforming device with oxygen, obtain also Primordial Qi, reduction temperature degree is 1000 DEG C.Also Primordial Qi
After mixing through the third gas of desulfurization and decarburization, temperature is 900 DEG C, and sends into reduced iron acid pellet in shaft furnace, is made steel
Use DRI.In reduction process, by shaft furnace discharge top gas it is scrubbed, dehydration, compression after, be divided into according to volume accounting
Three parts：50% mixes as the first gas in the present embodiment with natural gas, and 40% used as the second gas in the present embodiment
It is passed through heater and does fuel gas, 10% used as the third gas in the present embodiment.Directly going back below cooling air cooling shaft furnace
After former iron, shaft furnace is discharged, sending cooling section circulating cooling back to after then scrubbed, compression uses.
Embodiment 3
Natural gas mixes with first gas, obtains mixed gas.By in mixed gas feeding preheating device, temperature is by 60 DEG C
300 DEG C are risen to, after desulfurization process, 600 DEG C is heated in feeding heater.Then, the mixed gas after heating are sent into
In first tri-reforming device, meanwhile, oxygen is passed through thereto.Wherein, the volume of oxygen is the 80% of natural gas volume.Mixing
There is tri-reforming in gas, obtain also Primordial Qi with oxygen in the first tri-reforming device, and reduction temperature degree is 1050 DEG C.Also
After mixing through the third gas of desulfurization and decarburization, temperature is 880 DEG C to Primordial Qi, and sends into reduced iron acid pellet in shaft furnace, is obtained
Steel-making DRI.In reduction process, by shaft furnace discharge top gas it is scrubbed, dehydration, compression after, according to volume accounting
It is divided into three parts：65% mixes as the first gas in the present embodiment with natural gas, and 25% used as second in the present embodiment
Gas is passed through heater and does fuel gas, and 10% used as the third gas in the present embodiment.It is straight below cooling air cooling shaft furnace
After connecing reduced iron, shaft furnace is discharged, sending cooling section circulating cooling back to after then scrubbed, compression uses.
Finally it should be noted that：Obviously, above-described embodiment is only intended to clearly illustrate example of the present invention, and simultaneously
The non-restriction to implementation method.For those of ordinary skill in the field, can also do on the basis of the above description
Go out the change or variation of other multi-forms.There is no need and unable to be exhaustive to all of implementation method.And thus drawn
Obvious change that Shen goes out or among changing still in protection scope of the present invention.
Claims (10)
1. the system that a kind of natural gas tri-reforming prepares DRI, it is characterised in that the system includes shaft furnace, the first gas
Body unit, second gas unit, third gas unit；
There is the shaft furnace top gas to export, also Primordial Qi entrance, iron acid pellet entrance, DRI is exported；
The first gas unit includes the preheating device, desulfurizer, heater, the tri-reforming device that are sequentially connected；Institute
Stating preheating device has mixed gas entrance, and the mixed gas entrance is connected with the top gas outlet of the shaft furnace；Described three
There is reforming reactor oxygen intake, also Primordial Qi to export, and also Primordial Qi outlet is connected with the also Primordial Qi entrance of the shaft furnace；
The second gas unit includes the heater, the preheating device；There are the heater second gas to enter
Mouth, exhanst gas outlet, the second gas entrance are connected with the top gas outlet of the shaft furnace；There is the preheating device flue gas to enter
Mouthful, the smoke inlet is connected with the exhanst gas outlet of the heater；
The third gas unit includes desulfurization and decarburization device, and the desulfurization and decarburization device has third gas entrance, the 3rd gas
Body is exported；The third gas entrance is connected with the top gas outlet of the shaft furnace, and the third gas are exported and the shaft furnace
Also Primordial Qi entrance connection.
2. system according to claim 1, it is characterised in that the tri-reforming device is provided with multiple；It is the multiple
Tri-reforming device is connected in parallel, and the multiple tri-reforming device being connected in parallel is connected in series with the heating furnace.
3. system according to claim 1, it is characterised in that also including the wash mill, the compression set that are sequentially connected, uses
In washing, compression top gas；The wash mill is connected with the shaft furnace, the top gas is provided with the compression set and is gone out
Mouthful.
4. described systems of one of a kind of utilization claim 1-3, the method that DRI is prepared by natural gas tri-reforming, its
It is characterised by, including step：
The top gas of the shaft furnace discharge is divided into three parts：First gas, second gas, third gas；
The first gas are mixed with natural gas, mixed gas are obtained；The mixed gas are preheated, after desulfurization, send into institute
State in heater and heat, be then fed into the tri-reforming device, and to being passed through oxygen in the tri-reforming device, institute
Generation tri-reforming obtains also Primordial Qi in stating tri-reforming device；
The second gas are sent into the heater as fuel；
The third gas are then fed into the shaft furnace by mixing with the also Primordial Qi after desulfurization and decarburization, and are reduced described
Iron acid pellet in shaft furnace, obtains DRI.
5. method according to claim 4, it is characterised in that
The percentage that the volume of the first gas accounts for the top gas cumulative volume is 40~70%；
The percentage that the volume of the second gas accounts for the top gas cumulative volume is 25~40%；
The percentage that the volume of the third gas accounts for the top gas cumulative volume is 5~20%.
6. method according to claim 4, it is characterised in that the catalyst of the tri-reforming is nickel-base catalyst.
7. method according to claim 4, it is characterised in that the volume of the oxygen account for the natural gas volume 70~
80%.
8. method according to claim 4, it is characterised in that the temperature after the mixed gas are preheated is 200~300
℃。
9. method according to claim 4, it is characterised in that the mixed gas are through the temperature after the heating devices heat
Spend is 500~600 DEG C.
10. method according to claim 4, it is characterised in that the temperature of the also Primordial Qi is 950~1050 DEG C.
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| CN201710124126.3A CN106834579A (en) | 2017-03-03 | 2017-03-03 | The system and method that a kind of natural gas tri-reforming prepares DRI |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110016550A (en) * | 2018-12-25 | 2019-07-16 | 武汉桂坤科技有限公司 | A kind of low dirt Ferrous Metallurgy method |
| CN114107591A (en) * | 2021-11-26 | 2022-03-01 | 钢铁研究总院 | Heating-pure hydrogen reduction cooling system and method |
| CN114988360A (en) * | 2022-05-13 | 2022-09-02 | 中国成达工程有限公司 | Method for preparing synthesis gas by natural gas partial oxidation and carbon dioxide self-heating reforming |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5641306A (en) * | 1980-08-25 | 1981-04-18 | Kobe Steel Ltd | Iron making method by direct reduction of iron oxide |
| CN103276133A (en) * | 2013-05-31 | 2013-09-04 | 北京神雾环境能源科技集团股份有限公司 | Method for producing direct reduction iron by utilizing partial oxidation of natural gas |
| CN106435081A (en) * | 2016-12-16 | 2017-02-22 | 江苏省冶金设计院有限公司 | Preparation system of direct reduction iron and preparation method |
| CN206607250U (en) * | 2017-03-03 | 2017-11-03 | 江苏省冶金设计院有限公司 | The system that a kind of natural gas tri-reforming prepares DRI |
-
2017
- 2017-03-03 CN CN201710124126.3A patent/CN106834579A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5641306A (en) * | 1980-08-25 | 1981-04-18 | Kobe Steel Ltd | Iron making method by direct reduction of iron oxide |
| CN103276133A (en) * | 2013-05-31 | 2013-09-04 | 北京神雾环境能源科技集团股份有限公司 | Method for producing direct reduction iron by utilizing partial oxidation of natural gas |
| CN106435081A (en) * | 2016-12-16 | 2017-02-22 | 江苏省冶金设计院有限公司 | Preparation system of direct reduction iron and preparation method |
| CN206607250U (en) * | 2017-03-03 | 2017-11-03 | 江苏省冶金设计院有限公司 | The system that a kind of natural gas tri-reforming prepares DRI |
Non-Patent Citations (1)
| Title |
|---|
| 吴道洪: "发展气基直接还原填补我国钢铁工业技术空白", 《中国金属学会2008年非高炉炼铁年会文集》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110016550A (en) * | 2018-12-25 | 2019-07-16 | 武汉桂坤科技有限公司 | A kind of low dirt Ferrous Metallurgy method |
| CN114107591A (en) * | 2021-11-26 | 2022-03-01 | 钢铁研究总院 | Heating-pure hydrogen reduction cooling system and method |
| CN114988360A (en) * | 2022-05-13 | 2022-09-02 | 中国成达工程有限公司 | Method for preparing synthesis gas by natural gas partial oxidation and carbon dioxide self-heating reforming |
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