CN101696461A - Method for producing molten steel and hydrogen by thermal circulation of carbon dioxide gas - Google Patents
Method for producing molten steel and hydrogen by thermal circulation of carbon dioxide gas Download PDFInfo
- Publication number
- CN101696461A CN101696461A CN200910233775A CN200910233775A CN101696461A CN 101696461 A CN101696461 A CN 101696461A CN 200910233775 A CN200910233775 A CN 200910233775A CN 200910233775 A CN200910233775 A CN 200910233775A CN 101696461 A CN101696461 A CN 101696461A
- Authority
- CN
- China
- Prior art keywords
- converter
- carbon dioxide
- hydrogen
- blown
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- Y02P10/122—Reduction of greenhouse gas [GHG] emissions by capturing or storing CO2
-
- 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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Abstract
The invention relates to a method for producing molten steel and hydrogen by the thermal circulation of a carbon dioxide gas and belongs to the technical field of metallurgy. The method is characterized in that: molten iron and waste steel iron are used as raw materials, lime is used together as a slag-forming, dephosphorizing and desulphurizing agent, the mixture of the molten iron, waste steel ion and lime is transferred into a converter to be blown to produce molten steel, flue gases generated during the blowing by the converter heat the carbon dioxide gas in an heat exchange tube bundle placed in a smoke hood on the roof of the converter, the carbon dioxide serves as a primary gasification agent, and steam serves as a secondary gasification agent; and the generated mixed gas of carbon dioxide, hydrogen and the like enters an upper flue heat exchanger for recovering heat and generating steam, the steam is blown into the smoke hood, the flue gases, after being exhausted from the flue, is dedusted by a deduster, carbon dioxide and hydrogen are separated by a water washing separation method, and part of carbon dioxide is dehydrated, then compressed in the heat exchange tube bundle placed on the smoke hook on the roof of the converter, heated by the flue gases generated by the converter and introduced into the converter to be recycled. The method has the advantages that: the energy consumption is low, the carbon dioxide gas can be regenerated and used; the heat can be recycled; and hydrogen is generated.
Description
(1) technical field
The present invention relates to a kind of method, belong to metallurgical technology field with carbon dioxide gas thermal cycling system molten steel and hydrogen.
(2) background technology
The method of traditional top-blown converter steelmaking is: adopt the oxygen top blown converter steel making method, oxygen is vaporized chemical, and the cost height of system oxygen can't be given birth to hydrogen by fecund.
(3) summary of the invention
The invention reside in and overcome above-mentioned deficiency, provide a kind of energy consumption low, the method that carbon dioxide gas can recycling utilization with carbon dioxide gas thermal cycling system molten steel and hydrogen.
The object of the present invention is achieved like this: a kind of method with carbon dioxide gas thermal cycling system molten steel and hydrogen, it is characterized in that: described method is with molten iron, iron and steel scrap is a raw material, being equipped with lime is the agent of slag making dephosphorization and desulfurization, with molten iron, iron and steel scrap, the mixture of lime is directly in the converter, molten steel is made in blowing, the flue gas that produces when bessemerizing, heating places the carbon dioxide gas of heat-exchanging tube bundle in the petticoat pipe of converter furnace roof top, after the carbon dioxide gas temperature raises, go out heat-exchanging tube bundle and be blown into vaporized chemical of work in the converter through converter furnace roof air gun, simultaneously be blown into steam as the second gasification agent at converter furnace roof top petticoat pipe oral-lateral, generate mixtures such as carbonic acid gas and hydrogen, enter the upper flue interchanger and reclaim heat generation steam, this steam is blown in the petticoat pipe by converter furnace roof top petticoat pipe oral-lateral, flue gas is by after the fly-ash separator dedusting behind the smoke outlet flue, carbonic acid gas and hydrogen wash partition method again with water and are separated into carbonic acid gas and hydrogen, partial CO 2 is by after dewatering, be pressed in the interior heat-exchanging tube bundle of converter furnace roof top petticoat pipe, introduced converter top air gun after the flue gas heating of converter, be blown in the converter via this air gun, carry out recycle again, remaining carbonic acid gas neutralizes with alkali wash.
Compare with traditional method, energy consumption of the present invention is low, carbon dioxide gas can regeneration, and heat energy is reusable edible also, can produce hydrogen.
(4) description of drawings
Fig. 1 is technological process of production figure of the present invention.
(5) embodiment
The method that the present invention relates to carbon dioxide gas thermal cycling system molten steel and hydrogen, described method is with molten iron, iron and steel scrap is a raw material, being equipped with lime is the agent of slag making dephosphorization and desulfurization, with molten iron, iron and steel scrap, the mixture of lime is directly into blowing in the converter, 1680-1720 ℃ of blowing temperature, make molten steel, the flue gas that produces when bessemerizing, heating places the carbon dioxide gas of heat-exchanging tube bundle in the petticoat pipe of converter furnace roof top, after the carbon dioxide gas temperature raises, go out heat-exchanging tube bundle and be blown into vaporized chemical of work in the converter through converter furnace roof air gun, simultaneously be blown into steam as the second gasification agent at converter furnace roof top petticoat pipe oral-lateral, generate mixtures such as carbonic acid gas and hydrogen, enter the upper flue interchanger and reclaim heat generation steam, this steam is blown in the petticoat pipe by converter furnace roof top petticoat pipe oral-lateral, flue gas is by after the fly-ash separator dedusting behind the smoke outlet flue, carbonic acid gas and hydrogen wash partition method again with water and are separated into carbonic acid gas and hydrogen, partial CO 2 is by after dewatering, be pressed in the interior heat-exchanging tube bundle of converter furnace roof top petticoat pipe, introduced converter top air gun after the flue gas heating of converter, be blown in the converter via this air gun, carry out recycle again, remaining carbonic acid gas neutralizes with alkali wash.
The carbonic acid gas temperature that is blown in the converter with air gun among the present invention is more than 200 ℃, and the recycle of heat energy energy replenishes and is blown into vapor temperature more than 200 ℃.
When No. 20 steel that blow are following, be toward oxygen blast gas in converter 2-4 minute.
Claims (1)
1. method with carbon dioxide gas thermal cycling system molten steel and hydrogen, it is characterized in that: described method is with molten iron, iron and steel scrap is a raw material, being equipped with lime is the agent of slag making dephosphorization and desulfurization, with molten iron, iron and steel scrap, the mixture of lime is directly in the converter, molten steel is made in blowing, the flue gas that produces when bessemerizing, heating places the carbon dioxide gas of heat-exchanging tube bundle in the petticoat pipe of converter furnace roof top, after the carbon dioxide gas temperature raises, go out heat-exchanging tube bundle and be blown into vaporized chemical of work in the converter through converter furnace roof air gun, simultaneously be blown into steam as the second gasification agent at converter furnace roof top petticoat pipe oral-lateral, generate mixtures such as carbonic acid gas and hydrogen, enter the upper flue interchanger and reclaim heat generation steam, this steam is blown in the petticoat pipe by converter furnace roof top petticoat pipe oral-lateral, flue gas is by after the fly-ash separator dedusting behind the smoke outlet flue, carbonic acid gas and hydrogen wash partition method again with water and are separated into carbonic acid gas and hydrogen, partial CO 2 is by after dewatering, be pressed in the interior heat-exchanging tube bundle of converter furnace roof top petticoat pipe, introduced converter top air gun after the flue gas heating of converter, be blown in the converter via this air gun, carry out recycle again, remaining carbonic acid gas neutralizes with alkali wash.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910233775A CN101696461A (en) | 2009-09-30 | 2009-09-30 | Method for producing molten steel and hydrogen by thermal circulation of carbon dioxide gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910233775A CN101696461A (en) | 2009-09-30 | 2009-09-30 | Method for producing molten steel and hydrogen by thermal circulation of carbon dioxide gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101696461A true CN101696461A (en) | 2010-04-21 |
Family
ID=42141587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910233775A Pending CN101696461A (en) | 2009-09-30 | 2009-09-30 | Method for producing molten steel and hydrogen by thermal circulation of carbon dioxide gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101696461A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112657431A (en) * | 2020-12-01 | 2021-04-16 | 安徽成泰医药科技有限公司 | Evacuating device for hydrogen production by methanol cracking |
| CN116463148A (en) * | 2023-04-20 | 2023-07-21 | 北京科技大学 | Method and device for producing hydrogen by blowing steam-coke powder into converter flue |
-
2009
- 2009-09-30 CN CN200910233775A patent/CN101696461A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112657431A (en) * | 2020-12-01 | 2021-04-16 | 安徽成泰医药科技有限公司 | Evacuating device for hydrogen production by methanol cracking |
| CN116463148A (en) * | 2023-04-20 | 2023-07-21 | 北京科技大学 | Method and device for producing hydrogen by blowing steam-coke powder into converter flue |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20220235426A1 (en) | Method and system for producing steel or molten-iron-containing materials with reduced emissions | |
| CN104846209B (en) | A kind of system and method for step-by-step reduction recovery ferrum and coal gasification recovery waste heat from molten copper slag | |
| CN101603104A (en) | CO in blast furnace and the coal gas of converter 2Separation and Recovery and cyclic utilization method | |
| CN101575653A (en) | Method and device for separating carbon dioxide to improve mass energy of blast furnace gas | |
| EA039785B1 (en) | Method for producing hot synthesis gas for use in blast furnace operation | |
| CN103276133B (en) | Method for producing direct reduction iron by utilizing partial oxidation of natural gas | |
| CN103776272A (en) | Converter gas mass-energy conversion and CO2 cycle steelmaking method | |
| TW202237861A (en) | Smart hydrogen production for dri making | |
| CN114672602A (en) | Method for smelting schreyerite by coke oven gas-based shaft furnace and carrying out electric furnace melting, separating and deep reduction | |
| CN112063856B (en) | Side-blown furnace for nickel-containing sludge treatment, flue gas treatment system and treatment method | |
| KR101998733B1 (en) | Apparatus for manufacturing molten iron and method for manufacturing thereof | |
| CN101696461A (en) | Method for producing molten steel and hydrogen by thermal circulation of carbon dioxide gas | |
| CN209752602U (en) | Smoke dust adsorption equipment for steelmaking | |
| CN205170895U (en) | Rotary kiln CO2 and argon gas are used for controlling means of converter smelting | |
| CN107354260A (en) | A kind of system and method that DRI is smelted using clean pyrolysis gas | |
| CN106702065A (en) | Novel system and novel method for preparing sponge iron through gas-based shaft kiln | |
| US20140023577A1 (en) | Method for treating a carbon dioxide-containing waste gas from an electrofusion process | |
| CN113881842B (en) | System and method for integrally producing metallized pellets by pellet roasting and reduction | |
| CN101532087B (en) | Method for preparing metal and hydrogen gas by thermal circulation of carbon dioxide | |
| CN113913571A (en) | Device for separating carbon dioxide in blast furnace gas by using metallurgical slag and separation method thereof | |
| CN101973521A (en) | Method for forming oxygen and hydrogen by using steam and carbon monoxide through regenerating reduction and circular gasification | |
| RU2637439C1 (en) | Method for converter gases utilisation for hydrogen production | |
| CN112662824A (en) | Blast furnace hydrogen-rich smelting process for efficiently utilizing metallurgical waste gas | |
| CN207130284U (en) | A kind of low order coal gas for blast furnace ironmaking and coal dust mixed injection system | |
| CN206607265U (en) | Coal gas of converter utilizes system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20100421 |