• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
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  • 引用文献
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  • 优先权
    • 专利摘要:
    1455190 Steam reforming of methane ARMCO STEEL CORP 19 Feb 1974 [20 Feb 1973] 7504/74 Heading C5E [Also in Division C7] A feed mixture consisting solely of steam and hydrocarbonaceous fluid, e.g. desulphurized natural gas, and having a molar ratio of steam to carbon in the range 0À9 : 1 to 1À8 : 1 is reformed in the presence of a nickel catalyst at a temperature of 700-980‹ C. to produce a reducing gas consisting of 85-98 vol. per cent hydrogen and carbon monoxide and 1-14 vol. per cent water vapour, the hydrogen : carbon monoxide volume ratio being at least 2 : 1. The nickel catalyst may comprise a two-part catalyst bed, the feed passing through the two parts in sequence, one part comprising relatively fast acting (e.g. potassium-promoted) elemental nickel on a refractory base and the other a relatively slow acting elemental nickel.
    公开号:SU747402A3
    申请号:SU742001506
    申请日:1974-02-19
    公开日:1980-07-23
    发明作者:Лансфорд Крюс Клайд (Младший)；Пол Кершбоум Артер
    申请人:Армко Стил Корпорейшн (Фирма)；
    IPC主号:
    专利说明:

    (54) METHOD FOR OBTAINING RECOVERY GAS The invention relates to the direct production of iron from graded or pelleted iron ores, in particular, to a method for producing a reducing gas by water reforming a hydrocarbon gas using a catalyst. A method is known for producing reducing gas by steam reforming a hydrocarbon gas using a catalyst, which includes partial use of the waste gas for this purpose, and nickel can be used as a catalyst, the recycled gas is treated by refining it and then cooled. , drying, and compression. The disadvantages of this method are the inadequate maintenance of the mole ratio of the reducing gas ingredients and the excessive amount of water vapor. In order to intensify the process of reducing classified iron ore, gas conversion is carried out at a molar ratio of steam to carbon (0.9-1.8): to the hydrogen content. and carbon monoxide equal to 85-98% and the volume ratio between them, respectively, 2 to 1, while the volume of water vapor in the gas is 1-14%. The essence of the method is to eliminate air from the feed mixture. The exclusion of air from the feed mixture and the low steam to carbon ratio in the feed mixture obtained in the generator according to the present method results in a reducing gas mixture containing a relatively small amount of water vapor and at least 85% by volume of hydrogen plus carbon monoxide. The volume ratio of hydrogen to carbon monoxide of the reducing gas atmosphere obtained with a low steam to carbon ratio in the presence of an effective catalyst is at least 2: 1, thereby ensuring rapid reduction of iron ores. The reducing gas mixture is passed directly to the reduction section of the shaft furnace, since the relatively low moisture content in the mixture eliminates the need for cooling and condensation of water vapor.
    It is possible to use steam to opled ratio from 0.9: 1 to 1 8 8: 1, with the preferred range being 1.2: 1 to 1, b 31. If carbon deposition in the converter is not a problem, since in the upper Since a very durable, relatively slow acting catalyst is used to prevent the rupture during carbon deposition, a vapor-carbon ratio of 0.9: 1 to 0.95: 1 can be used. Throughout the entire range of steam-carbon ratios, the improved reducing gas mixture contains 85-98% by volume of carbon monoxide and hydrogen. Water vapor is in the range of about 1% by volume, with a parity ratio of 0.9: 1 and approximately 14% by volume with a ratio of paoplegne of 1.8: 1. The volume ratio of hydrogen and carbon monoxide is 2jl, and in the preferred operating range is 3: 1. The waste gas is not recirculated through the catalyst bed and therefore sulfur poisoning is avoided.
    权利要求:
    Claims (1)
    [1]
    1. Express information. Cherna metallurgists. Cheap reducing gas, M., 1972, No. 25, abstract 111, 5 p. 1-10 (proto ip).
    类似技术:
    公开号 | 公开日 | 专利标题
    SU747402A3|1980-07-23|Reducing gas producing method
    US1899184A|1933-02-28|Producing hydrogen and carbon monoxide
    GB1472595A|1977-05-04|Process for the preparation of a hydrogenrich gas
    ES401202A2|1975-10-01|Process for reducing the total sulfur content of claus off-gases
    US1917685A|1933-07-11|Recovery of sulphur
    CA1071402A|1980-02-12|Process for the treatment of coke-oven gas
    US4109701A|1978-08-29|Method of conveying heat energy
    US1819055A|1931-08-18|Desulphurization of gases and vapors
    US2383715A|1945-08-28|Production of gas mixture for methanol
    GB2248626A|1992-04-15|Direct reduction of metal oxides
    US1934836A|1933-11-14|Process for the catalytic conversion of hydrocarbons
    US1921856A|1933-08-08|Production of gaseous mixtures containing hydrogen and nitrogen from methane
    US1772652A|1930-08-12|Process of synthesizing methane from gases
    US2244710A|1941-06-10|Process for the manufacture of hydrocarbons from carbon monoxide and hydrogen
    US1816523A|1931-07-28|Production of hydrogen
    CN109652604A|2019-04-19|A method of cementite is prepared using ferriferous oxide two-step method
    SU1105488A1|1984-07-30|Method of obtaining allyl chloride
    US1816842A|1931-08-04|Process for refining ores or products containing aluminum oxide
    US1983234A|1934-12-04|Conversion of solid fuels and product derived therefrom or o'ther materials into valuable liquids
    US1794231A|1931-02-24|Production of mixtures of nitrogen and hydrogen for ammonia synthesis
    GB314870A|1931-01-01|Process for producing a high grade gas rich in hydrogen
    US1317583A|1919-09-30|Method of treating gases containing hydrogen sttlfid
    EP0532491A1|1993-03-17|Treatment of organic sulfur gases especially in kraft pulping systems and processes
    US1793677A|1931-02-24|Process for the production of hydrogen
    US1408754A|1922-03-07|Fixation of nitrogen
    同族专利:
    公开号 | 公开日
    NL7402190A|1974-08-22|
    IT1008252B|1976-11-10|
    ZA74955B|1975-01-29|
    SE419654B|1981-08-17|
    FR2218387A1|1974-09-13|
    CA1017150A|1977-09-13|
    AT337224B|1977-06-27|
    GB1455190A|1976-11-10|
    DE2407939A1|1974-08-29|
    NO137647B|1977-12-19|
    IN141888B|1977-04-30|
    RO67604A|1980-03-15|
    US3905806A|1975-09-16|
    AU6555274A|1975-08-14|
    DE2407939B2|1978-11-02|
    ES423446A1|1976-06-01|
    BE811296A|1974-06-17|
    JPS5024111A|1975-03-15|
    NO740553L|1974-08-21|
    FR2218387B1|1976-11-26|
    AR201305A1|1975-02-28|
    BR7401251D0|1974-10-29|
    ATA138174A|1976-10-15|
    NO137647C|1978-03-29|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2515325C2|2008-11-21|2014-05-10|Сименс Фаи Металз Текнолоджиз Гмбх|Method and device for obtaining raw material synthesis-gas|NL34213C|1931-01-17|
    US3136623A|1960-11-04|1964-06-09|Pullman Inc|Method for reducing metal oxides|
    US3193378A|1964-03-16|1965-07-06|Exxon Research Engineering Co|Process for reduction of iron ore|
    BE663807A|1964-05-12|
    US3748120A|1971-04-15|1973-07-24|Midland Ross Corp|Method of and apparatus for reducing iron oxide to metallic iron|
    US3749386A|1971-07-01|1973-07-31|Midland Ross Corp|Method and means for reducing iron oxides in a gaseous reduction process|DE2459876B1|1974-12-18|1976-06-24|Thyssen Purofer Gmbh|PLANT FOR THE DIRECT REDUCTION OF IRON ORES|
    AU496945B2|1975-05-19|1978-11-16|Midrex International B.V. Rotterdam|Producing metallized product|
    US4246024A|1979-10-31|1981-01-20|Grupo Industrial Alfa, S.A.|Method for the gaseous reduction of metal ores using reducing gas produced by gasification of solid or liquid fossil fuels|
    US4351513A|1981-01-29|1982-09-28|Midrex Corporation|Direct reduction of iron using coke oven gas|
    IT1177076B|1983-12-02|1987-08-26|Skf Steel Eng Ab|PROCESS AND PLANT TO REDUCE OXIDE MATERIAL SIMULTANEOUSLY GENERATING A GAS SUITABLE FOR THE RECOVERY OF THERMAL ENERGY|
    DE4041689C2|1990-04-20|1995-11-09|Orinoco Siderurgica|Process and plant for producing liquid steel from iron oxides|
    AT511243B1|2011-03-17|2013-01-15|Siemens Vai Metals Tech Gmbh|HÜTTENTECHNISCHE ANLAGE WITH EFFICIENT DOWNWATER USE|
    US9896918B2|2012-07-27|2018-02-20|Mbl Water Partners, Llc|Use of ionized water in hydraulic fracturing|
    EP2905345A1|2014-02-10|2015-08-12|Primetals Technologies Austria GmbH|Pneumatic ore charging|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US333673A|US3905806A|1973-02-20|1973-02-20|Method for the direct reduction of iron ores|
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