CN101824504B - Method for preparing carbon-iron alloy with hydrogen, steam and combustible through thermal circulation - Google Patents
Method for preparing carbon-iron alloy with hydrogen, steam and combustible through thermal circulation Download PDFInfo
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- CN101824504B CN101824504B CN2010101259941A CN201010125994A CN101824504B CN 101824504 B CN101824504 B CN 101824504B CN 2010101259941 A CN2010101259941 A CN 2010101259941A CN 201010125994 A CN201010125994 A CN 201010125994A CN 101824504 B CN101824504 B CN 101824504B
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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
- 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
Abstract
The invention relates to a method for preparing a carbon-iron alloy with hydrogen, steam and combustible through thermal circulation, which is characterized in that the method takes ore, pellet ore and scrap steel as the raw materials, takes combustible as the fuel, takes limestone as dephosphorization slag desulfurization agent and prepares a mixture; the mixed materials directly enter a melting furnace, a gasification furnace or an internal combustion engine, and carbon-ion alloy liquid is prepared; flue gas generated in melting or gasification heats steam in a heat exchange heat bundle at the upper part of the melting furnace, the gasification furnace or a heating furnace; the steam and the hydrogen are disposable gasification agent; simultaneously, the steam is blown into the upper side of the melting furnace, the gasification furnace or the heating furnace to generate carbon dioxide, hydrogen and other mixture; and the carbon dioxide is washed and neutralized by alkali, and hydrogen is separated and recycled. The method for preparing the carbon-iron alloy with hydrogen, steam and combustible through thermal circulation has the advantages of little investment, low energy consumption, recyclable heat energy and environmental protection.
Description
(1) technical field
The present invention relates to a kind of method, belong to metallurgical technology field with hydrogen, steam and combustiblematerials thermal cycling preparing carbon-iron alloy.
(2) background technology
Traditional method with ore, green-ball ore deposit system metal is, adopting ore, green-ball ore deposit is raw material, and coal is fuel; Air is a vaporized chemical, processes agglomerate through the sintering oven sintering, and agglomerate cooling back adds smelting furnace; One deck agglomerate one deck coke, carbon-iron alloy is processed in melting, and the flue gas that produces during melting adds warm air through the hotblast stove secondary combustion again; Warm air is blown into the melting furnace side as vaporized chemical, and aforesaid method is because of having 21% oxygen, 78% nitrogen in the air; And 78% nitrogen does not have the vaporized chemical effect, also increases energy consumption, and above method is with air, oxygen or carbonic acid gas thermal cycling burning; All be reaction between carbon and oxygen, nitrogen protoxide and carbonic acid gas that burning produces pollute the environment.
(3) summary of the invention
The invention reside in and overcome above-mentioned deficiency, provide a kind of energy consumption to hang down environmental protection again, use the method for hydrogen, steam and combustiblematerials thermal cycling preparing carbon-iron alloy cheaply.
The objective of the invention is to realize like this: a kind of method with hydrogen, steam and combustiblematerials thermal cycling preparing carbon-iron alloy; It is characterized in that: said method is to be raw material with ore, green-ball ore deposit and iron and steel scrap; With the combustiblematerials is fuel, and being equipped with Wingdale is the agent of slag making dephosphorization and desulfurization, processes mixture; This mixture directly into smelting furnace, gasification burner or process furnace, is processed carbon-iron alloy liquid; During melting or when vaporization the flue gas that produces; Heating places the steam in smelting furnace, gasification burner or the process furnace top heat-exchanging tube bundle, and steam and hydrogen are a vaporized chemical, and smelting furnace, gasification burner or heating-furnace upside are blown into steam as the second gasification agent simultaneously; Generate mixtures such as carbonic acid gas and hydrogen; Replenish steam through the stove upside and be blown in the smelting furnace, mixtures such as the carbonic acid gas that goes out interchanger and hydrogen pass through the flue dust collector dedusting, and carbonic acid gas after the dedusting and hydrogen are used in the alkali cleaning and carbonic acid gas again; Isolate hydrogen, recycling.
Compare with traditional method, hydrogen of the present invention and steam cycle are reacted, and have reduced the consumption of carbon, reduce Carbon emission simultaneously, low-carbon environment-friendly.
Less investment of the present invention, low, the heat energy reusable edible of energy consumption.
Through test, the present invention can be more energy-conservation than traditional method, and the renewable recycle of hydrogen almost is zero carbon.Production cost is low, and adaptability to raw material is wide, and turndown ratio is big, and that can suit measures to local conditions utilizes combustiblematerials.Material qualities such as ore, green-ball ore deposit and iron and steel scrap height can both be used, as long as the cost of raw material just can be processed carbon-iron alloy.
(4) description of drawings
Fig. 1 is the technological process of production synoptic diagram of embodiments of the invention 1.
Fig. 2 is the technological process of production synoptic diagram that embodiments of the invention 2 adopt gasification burner.
Fig. 3 is the technological process of production synoptic diagram that embodiments of the invention 2 adopt process furnace.
Fig. 4 is the technological process of production synoptic diagram that embodiments of the invention 2 adopt oil engine.
(5) embodiment
Embodiment 1:
Referring to Fig. 1, the method with hydrogen, steam and combustiblematerials thermal cycling preparing carbon-iron alloy that the present invention relates to, said method are to be raw material with ore, green-ball ore deposit and iron and steel scrap, are fuel with the combustiblematerials, and being equipped with Wingdale is the agent of slag making dephosphorization and desulfurization, processes mixture; This mixture directly into the smelting furnace melting, is processed carbon-iron alloy liquid; The flue gas that produces during melting, heating places the steam in the heat-exchanging tube bundle of smelting furnace top, and steam and hydrogen are a vaporized chemical; The smelting furnace upside is blown into steam as the second gasification agent simultaneously, generates mixtures such as carbonic acid gas and hydrogen, replenishes steam through the smelting furnace upside and is blown in the smelting furnace; The mixtures such as carbonic acid gas and hydrogen that go out interchanger are through the flue dust collector dedusting; Carbonic acid gas after the dedusting and hydrogen are used in the alkali cleaning and carbonic acid gas again, isolate hydrogen, recycling.
The carbon-iron alloy liquid temp that the present invention processes is more than 1500 ℃.
Furnace side of the present invention or furnace roof are blown into hydrogen, steam, are that furnace side or furnace roof through smelting furnace blows rifle and be blown into.
Some is renewable resources for a combustiblematerials, and like biomass, its resource is extremely abundant.
Some is Nonrenewable resources for a combustiblematerials, like coal gangue, coal, crude oil, Sweet natural gas etc.
Biomass are a kind of renewable resourcess, and biomass resource is extremely abundant, and (wooden unit, wood chip, wood chip, branch etc.) Mierocrystalline cellulose, agricultural wastes, waterplant, oilseed plant, organism processing waste material, excrement of animals etc. are arranged.The biomass high-temperature gasification hydrogen-producing is applicable to the biomass that regain is less.Use after compression, volume compression ratio is 5～10 times.
Embodiment 2:
Referring to Fig. 2-4, the difference of present embodiment and embodiment 1 only is:
Said method be with combustiblematerials, flammable liquid is gentle is fuel, combustiblematerials is directly added gasification burner, process furnace or internal combustion engine burns.
Same method; (vapor temperature is elevated to more than 550 ℃ also to can be used for smelting calcium carbide; Hydrogen is more than 250 ℃), also can be used for heating fields such as calcined lime, cement, chemical industry, generating (carbon ratio can be reduced in 3%, and the carbon ratio that is used to smelt ferro-titanium is in 12%).
Claims (1)
1. method with hydrogen, steam and combustiblematerials thermal cycling preparing carbon-iron alloy is characterized in that: said method is to be raw material with ore, green-ball ore deposit and iron and steel scrap, is fuel with the combustiblematerials, and being equipped with Wingdale is the agent of slag making dephosphorization and desulfurization, processes mixture; This mixture directly into smelting furnace, gasification burner or process furnace, is processed carbon-iron alloy liquid; During melting or when vaporization the flue gas that produces; Heating places the steam in smelting furnace, gasification burner or the process furnace top heat-exchanging tube bundle, and steam and hydrogen are a vaporized chemical, and smelting furnace, gasification burner or heating-furnace upside are blown into steam as the second gasification agent simultaneously; Generate carbonic acid gas and hydrogen mixture; Replenish steam through the stove upside and be blown in the smelting furnace, the carbonic acid gas and the hydrogen mixture that go out interchanger pass through the flue dust collector dedusting, and carbonic acid gas after the dedusting and hydrogen are used in the alkali cleaning and carbonic acid gas again; Isolate hydrogen, recycling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010101259941A CN101824504B (en) | 2010-03-10 | 2010-03-10 | Method for preparing carbon-iron alloy with hydrogen, steam and combustible through thermal circulation |
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| CN2010101259941A CN101824504B (en) | 2010-03-10 | 2010-03-10 | Method for preparing carbon-iron alloy with hydrogen, steam and combustible through thermal circulation |
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| CN101824504A CN101824504A (en) | 2010-09-08 |
| CN101824504B true CN101824504B (en) | 2012-12-12 |
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| CN114574651B (en) * | 2022-01-24 | 2023-05-05 | 山东大学 | Cyclone iron wall melting smelting device and method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101255482A (en) * | 2008-03-21 | 2008-09-03 | 江阴市尚疯新能源技术开发有限公司 | Method for directly melting iron with iron ore powder or iron ore by using converter |
| CN101532087A (en) * | 2009-04-10 | 2009-09-16 | 江阴市尚疯新能源技术开发有限公司 | Method for preparing metal and hydrogen gas by thermal circulation of carbon dioxide |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101255482A (en) * | 2008-03-21 | 2008-09-03 | 江阴市尚疯新能源技术开发有限公司 | Method for directly melting iron with iron ore powder or iron ore by using converter |
| CN101532087A (en) * | 2009-04-10 | 2009-09-16 | 江阴市尚疯新能源技术开发有限公司 | Method for preparing metal and hydrogen gas by thermal circulation of carbon dioxide |
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