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    • 2. 发明授权
    • Process for removal of hydrogen sulfide from gas streams
    • 从气流中除去硫化氢的方法
    • US4311683A
    • 1982-01-19
    • US161694
    • 1980-06-23
    • Robert H. HassRowland C. Hansford
    • Robert H. HassRowland C. Hansford
    • C01B17/04
    • C01B17/0465
    • A process for the removal of H.sub.2 S from a feed gas, and the production of sulfur therefrom, is effected by oxidation with oxygen and/or SO.sub.2 at temperatures between 250.degree. and 450.degree. F. The oxidation is conducted in the presence of an extremely stable oxidation catalyst comprising an oxide and/or sulfide of vanadium supported on a non-alkaline porous refractory oxide. Sulfur deposition and consequent catalyst deactivation are prevented by maintaining the partial pressure of free sulfur in the oxidation reactor below that necessary for condensation. H.sub.2, CO, and light hydrocarbons present in the feed gas are not oxidized. Typical uses of the process include the removal of H.sub.2 S and the production of sulfur from sour natural gases or gases obtained from the gasification of coal.Feed gases which contain SO.sub.2 and H.sub.2 S in mole ratios greater than 0.5, or which contain other gaseous sulfur compounds such as COS, CS.sub.2, SO.sub.3 and mercaptans, can be desulfurized by hydrogenating all of such sulfur components to H.sub.2 S and subsequently removing the H.sub.2 S from the hydrogenated feed gas by the oxidation process of the invention. This hydrogenation-oxidation combination is especially contemplated for the desulfurization of Claus tail gases and stack gas effluents.
    • 从进料气体中除去H 2 S和从其中产生硫的方法是通过在250-450°F的温度下用氧和/或SO 2进行氧化来实现的。氧化是在非常稳定的条件下进行的 包含负载在非碱性多孔难熔氧化物上的钒的氧化物和/或硫化物的氧化催化剂。 通过将氧化反应器中的游离硫的分压维持在低于冷凝所需的程度来防止硫沉积和随之而来的催化剂失活。 存在于进料气体中的H 2,CO和轻烃不被氧化。 该方法的典型用途包括从酸性天然气或煤气化获得的气体中除去H 2 S和产生硫。 含有大于0.5摩尔比的SO2和H2S的进料气体或含有其它气态硫化合物如COS,CS2,SO3和硫醇的进料气体可以通过将所有这些硫组分氢化成H 2 S并随后从H 2 S中除去H 2 S来脱硫 氢化原料气通过本发明的氧化方法。 这种氢化 - 氧化组合特别适用于克劳斯尾气和烟道气体废气的脱硫。
    • 3. 发明授权
    • Process for removal of hydrogen sulfide from gas streams
    • 从气流中除去硫化氢的方法
    • US4243647A
    • 1981-01-06
    • US700513
    • 1976-06-28
    • Robert H. HassRowland C. Hansford
    • Robert H. HassRowland C. Hansford
    • C01B17/04
    • C01B17/0465
    • A process for the removal of H.sub.2 S from a feed gas, and the production of sulfur therefrom, is effected by oxidation with oxygen and/or SO.sub.2 at temperatures between 250.degree. and 450.degree. F. The oxidation is conducted in the presence of an extremely stable oxidation catalyst comprising an oxide and/or sulfide of vanadium supported on a non-alkaline porous refractory oxide. Sulfur deposition and consequent catalyst deactivation are prevented by maintaining the partial pressure of free sulfur in the oxidation reactor below that necessary for condensation. H.sub.2, CO, and light hydrocarbons present in the feed gas are not oxidized. Typical uses of the process include the removal of H.sub.2 S and the production of sulfur from sour natural gases or gases obtained from the gasification of coal.Feed gases which contain SO.sub.2 and H.sub.2 S in mole ratios greater than 0.5, or which contain other gaseous sulfur compounds such as COS, CS.sub.2, SO.sub.3 and mercaptans, can be desulfurized by hydrogenating all of such sulfur components to H.sub.2 S and subsequently removing the H.sub.2 S from the hydrogenated feed gas by the oxidation process of the invention. This hydrogenation-oxidation combination is especially contemplated for the desulfurization of Claus tail gases and stack gas effluents.
    • 从进料气体中除去H 2 S和从其中产生硫的方法是通过在250-450°F的温度下用氧和/或SO 2进行氧化来实现的。氧化是在非常稳定的条件下进行的 包含负载在非碱性多孔难熔氧化物上的钒的氧化物和/或硫化物的氧化催化剂。 通过将氧化反应器中的游离硫的分压维持在低于冷凝所需的程度来防止硫沉积和随之而来的催化剂失活。 存在于进料气体中的H 2,CO和轻烃不被氧化。 该方法的典型用途包括从酸性天然气或煤气化获得的气体中除去H 2 S和产生硫。 含有大于0.5摩尔比的SO2和H2S的进料气体或含有其它气态硫化合物如COS,CS2,SO3和硫醇的进料气体可以通过将所有这些硫组分氢化成H 2 S并随后从H 2 S中除去H 2 S来脱硫 氢化原料气通过本发明的氧化方法。 这种氢化 - 氧化组合特别适用于克劳斯尾气和烟道气体废气的脱硫。
    • 6. 发明授权
    • Thermally stable coprecipitated catalysts useful for methanation and
other reactions
    • 用于甲烷化和其他反应的热稳定性共沉淀催化剂
    • US4124629A
    • 1978-11-07
    • US758042
    • 1977-01-10
    • Rowland C. Hansford
    • Rowland C. Hansford
    • B01J23/74B01J23/75B01J23/755B01J37/03C07C1/02C07C1/04C07C1/10
    • B01J23/755B01J23/74B01J23/75B01J37/03C07C1/02C07C2521/04C07C2523/745C07C2523/75C07C2523/755
    • Catalysts having a high degree of thermal stability, comprising alumina and one or more of the iron group metals are prepared from aqueous solutions containing a dissolved aluminum salt, a salt of at least one of the iron group metals and a delayed precipitant such as urea. The solution is heated to a temperature sufficient to hydrolyze the delayed precipitant with resultant liberation of ammonia and carbon dioxide homogeneously throughout the solution, until the pH of the solution rises sufficiently to effect coprecipitation of the metal salts as hydroxides and/or carbonates. The resulting coprecipitate is then recovered, washed, dried, shaped and calcined in conventional fashion to obtain a final product which, after hydrogen-reduction is very active, and displays much greater thermal stability than corresponding prior art catalysts prepared by non-homogeneous coprecipitation with alkaline, ionic reagents such as sodium carbonate, ammonium hydroxide, or ammonium carbonate. The nickel-containing catalysts are particularly useful for methanation, but they are all useful in a variety of other reactions.
    • 含有氧化铝和一种或多种铁族金属的高热稳定性的催化剂由含有溶解的铝盐,至少一种铁族金属的盐和延迟沉淀剂如尿素的水溶液制备。 将溶液加热到足以水解延迟的沉淀剂的温度,同时在整个溶液中均匀释放氨和二氧化碳,直到溶液的pH升高到足以实现金属盐作为氢氧化物和/或碳酸盐的共沉淀。 然后将所得的共沉淀物以常规方式回收,洗涤,干燥,成型和煅烧,以获得最终产物,其在氢还原非常活泼之后,并且显示出比通过非均相共沉淀制备的相应的现有技术催化剂大得多的热稳定性, 碱性离子试剂如碳酸钠,氢氧化铵或碳酸铵。 含镍催化剂特别可用于甲烷化,但它们都可用于各种其他反应。
    • 7. 发明授权
    • Thermally stable coprecipitated catalysts useful for methanation and
other reactions
    • 用于甲烷化和其他反应的热稳定性共沉淀催化剂
    • US3988263A
    • 1976-10-26
    • US621769
    • 1975-10-14
    • Rowland C. Hansford
    • Rowland C. Hansford
    • B01D53/86B01J23/06B01J23/70B01J23/72B01J23/75B01J23/755B01J23/80B01J37/03C07C1/04C07C45/00B01J21/04B01J23/74
    • B01J23/72B01D53/864B01J23/06B01J23/70B01J23/75B01J23/755B01J23/80B01J37/03C07C1/0445C07C2521/04C07C2523/75
    • Catalysts having a high degree of thermal stability, comprising alumina and one or more of the metals iron, cobalt, nickel, copper and zinc, are prepared from aqueous solutions containing a dissolved aluminum salt, a salt of at least one of the aforesaid metals in divalent form, and a delayed precipitant such as urea. With all components in homogeneous solution at a relatively low pH and temperature, the solution is heated to a temperature sufficient to hydrolyze the delayed precipitant with resultant liberation of ammonia and carbon dioxide homogeneously throughout the solution, until the pH of the solution rises sufficiently to effect coprecipitation of the metal salts as hydroxides and/or carbonates. The resulting coprecipitate is then recovered, washed, dried, shaped and calcined in conventional fashion to obtain a final product which is very active, and displays much greater thermal stability than corresponding prior art catalysts prepared by non-homogeneous coprecipitation with alkaline, ionic reagents such as sodium carbonate, ammonium hydroxide, or ammonium carbonate. The nickel-containing catalysts are particularly useful for methanation, but they are all useful in a variety of other reactions.
    • 包含氧化铝和一种或多种金属铁,钴,镍,铜和锌的热稳定性的催化剂由含有溶解的铝盐,至少一种前述金属的盐的水溶液制备, 二价形式和延迟沉淀剂如尿素。 将均匀溶液中的所有组分在相对低的pH和温度下,将溶液加热至足以水解延迟沉淀剂的温度,同时在整个溶液中均匀释放氨和二氧化碳,直到溶液的pH升高到足以达到 作为氢氧化物和/或碳酸盐的金属盐的共沉淀。 然后将所得的共沉淀物以常规方式回收,洗涤,干燥,成形并煅烧以获得非常活泼的最终产物,并且显示出比用碱性离子试剂如非均相共沉淀制备的相应的现有技术催化剂大得多的热稳定性 作为碳酸钠,氢氧化铵或碳酸铵。 含镍催化剂特别可用于甲烷化,但它们都可用于各种其他反应。