• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A process for the catalytic incineration of residual gases containing a low content of H2S and/or SO2, organic compounds of sulfur such as COS, CS2, mercaptans and possibly vapor and/or vesicular sulfur, comprising a hydrogenation stage which transforms all the sulfur compounds into H2S followed by a catalytic oxidation stage to transform H2S into SO2. The catalyst used in the oxidation stage consists in a porous support, having a surface area of at least 5 m2/g and containing, by weight, 50 to 100% of a product selected from the group comprising titanium or zirconium oxides, silica and zeolites, and 50 to 0% alumina, to which is associated one or several compounds of metals belonging to the group formed by Cu, Ag, Zn, Cd, Y, Lanthanides, V, Cr, Mo, W, Mn, Fe, Co, Rh, Ir, Ni, Pd, Pt, Sn and Bi. The use of such an oxidation catalyst leads to a practically quantitative yield of conversion of H2S into SO2, this yield being maintained steadily throughout the process.
    公开号:SU1314949A3
    申请号:SU813273754
    申请日:1981-04-22
    公开日:1987-05-30
    发明作者:Вуарэн Робер
    申请人:Сосьете Насьональ Елф Акитэн (Продюксьон) (Фирма)；
    IPC主号:
    专利说明:

    This invention relates to processes for the catalytic purification of gases from sulfur compounds.
    The aim of the invention is to increase the stability of the process while maintaining the activity of the catalyst at a high level.
    Example. The method is carried out in an installation comprising a methane combustion reactor, a catalytic hydrogenation and oxidation reactor for sulfur compounds and an exhaust pipe that discharges gases into the atmosphere.
    As a catalyst for the hydrogenation (hydrogenation) of sulfur compounds, balls with a diameter of mm made of alumina, impregnated with cobalt oxide and molybdenum oxide are used. The catalyst has a specific surface area of 248 m / and contains 1.75% by weight of cobalt and 8% by weight of molybdenum relative to the total weight of the catalyst. As the oxidation catalyst, use is made of a catalyst obtained by impregnating porous titanium oxide extrusion products with a diameter of -vAmm iron sulfate, and the specified catalyst has a specific surface area of 80 m / g and contains 2 wt.% iron relative to the total weight of the catalyst (specific surface area of titanium oxide). The Claus process off-gas is heated at 150 sec. the burner is up to 390 ° C and injected into the hydrogenation reactor at a flow rate of 2539. The hydrogenation reaction (hydrogenation) takes place at 420 ° C. The contact time between the gas and the catalyst is 1 s at normal temperature and pressure. Air is added to gases leaving the hydrogenation reactor (its throughput is 2525 nm / h).
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    A quantity corresponding to 581 nm / h and the forming mixture are injected into the oxidation reactor at a speed of 3106 nm / h and at 365 C. The contact gas – catalyst time is 2 seconds at normal temperature and pressure, and the temperature of the reaction medium is 540 seconds. The resulting gas, content 80, is released into the atmosphere. The gas leaving after oxidation contains,%: 0; COS 0.007; CSj O and SOj 1.15.
    Data on the use of catalysts on supports in the method carried out according to the method of the example is presented in the table.
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    The method of purification of gases from sulfur compounds, including the catalytic hydrogenation of sulfur compounds to hydrogen sulfide and its subsequent oxidation with oxygen to sulfur dioxide at 200-550 C in the presence of an oxide catalyst supported on a porous oxide carrier, characterized in that catalyst activity at a high level, oxidation is carried out in the presence of a catalyst containing oxides of iron or molybdenum, or copper, or palladium, or mixtures thereof with a content of Alla 0.5-19 wt.% in the calcined catalyst, deposited on the oxides of titanium or zirconium, or silicon, or aluminum, or a mixture thereof, and the presence of palladium in the catalyst mixture with one of these metals palladium is 20-1000.
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    类似技术:
    公开号 | 公开日 | 专利标题
    SU1314949A3|1987-05-30|Method for removing sulfides from gases
    US4605546A|1986-08-12|Catalytic process for the production of sulfur from a gas containing H2 S
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    SU1582975A3|1990-07-30|Method of purifying gases from mercaptanes
    US4244937A|1981-01-13|Sulfur dioxide oxidation catalyst and process
    CN1072605C|2001-10-10|Method and catalyst for catalytically oxidising a low concentration of H2S in a gas to give sulphur
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    同族专利:
    公开号 | 公开日
    DE3116240A1|1982-06-09|
    CA1157234A|1983-11-22|
    GB2074556B|1983-12-21|
    GB2074556A|1981-11-04|
    FR2481254A1|1981-10-30|
    IT1137557B|1986-09-10|
    DE3116240C2|1991-09-12|
    US4399112A|1983-08-16|
    IT8121314D0|1981-04-22|
    FR2481254B1|1984-02-17|
    BE888517A|1981-08-17|
    JPS56166924A|1981-12-22|
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    FR2518424B1|1981-12-17|1988-03-11|Elf Aquitaine|PROCESS FOR CATALYTIC DESULFURIZATION OF AN ACID GAS CONTAINING H2S, AND POSSIBLY A GLOBAL QUANTITY OF AT LEAST 3% BY VOLUME OF CS2 AND / OR COS|
    US4556547A|1982-02-01|1985-12-03|Takeda Chemical Industries, Ltd.|Process for treatment of gases|
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    FR2540092B1|1983-01-31|1986-02-21|Elf Aquitaine|CATALYTIC PROCESS FOR THE PRODUCTION OF SULFUR FROM A H2S-CONTAINING GAS|
    FR2540006B1|1983-01-31|1988-04-01|Rhone Poulenc Spec Chim|HYDROGEN SULPHIDE OXIDATION CATALYST|
    SU1214583A1|1983-05-26|1986-02-28|Азербайджанский Институт Нефти И Химии Им.М.Азизбекова|Method of removing hydrogen sulphide from gas|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR8009129A|FR2481254B1|1980-04-23|1980-04-23|
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