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    Process for elimination of low concentrations of hydrogen sulfide in gas mixtures by catalytic oxidation
    3.
    发明授权
    Process for elimination of low concentrations of hydrogen sulfide in gas mixtures by catalytic oxidation 失效
    通过催化氧化在气体混合物中消除低浓度硫化氢的方法

    公开(公告)号：US06652826B1

    公开(公告)日：2003-11-25

    申请号：US08487629

    申请日：1995-06-07

    申请人： Aminul Islam Chowdhury ,  Eric Lars Tollefson ,  Tushar Kanti Ghosh

    发明人： Aminul Islam Chowdhury ,  Eric Lars Tollefson ,  Tushar Kanti Ghosh

    IPC分类号： C01B1704

    CPC分类号： B01D53/8612 ,  C01B17/0465

    摘要： A process is described for the elimination of hydrogen sulfide from gas mixtures by catalytic oxidation over activated carbon catalyst which converts the hydrogen sulfide to elemental sulfur and water, the former being sorbed by the activated carbon while the latter is transported with the gas mixture and may be removed by known dehydration processes. The above oxidative process is conducted at elevated temperatures and pressures and with sufficient residence time to assure virtually complete conversion of the hydrogen sulfide with minimal production of by-product sulfur dioxide. Traces of heavy hydrocarbons in the feed gas mixture which may reduce the life of the catalyst and the quality of the sulfur product may be removed by cryogenic means or by sorption on an activated carbon guard bed. Both the activated carbon catalyst used to oxidize the hydrogen sulfide and the activated carbon used to remove heavy hydrocarbons from the feed gas may be regenerated by passing inert gas or product gas through the beds of these materials at elevated temperatures for sufficient time to remove the sorbed sulfur or the heavy hydrocarbons, respectively for use as by-products of the process.

    摘要翻译： 描述了一种通过催化氧化在活性炭催化剂上消除硫化氢的方法，活性炭催化剂将硫化氢转化为元素硫和水，前者被活性炭吸收，而后者与气体混合物一起运输， 通过已知的脱水方法除去。 上述氧化过程在升高的温度和压力下进行，并具有足够的停留时间，以确保硫化氢几乎完全转化，同时产生副产物二氧化硫。 进料气体混合物中可能减少催化剂寿命和硫产物质量的重质烃痕迹可以通过低温方法或通过吸附在活性炭保护床上去除。 用于氧化硫化氢的活性炭催化剂和用于从进料气体中除去重质烃的活性炭可以通过使惰性气体或产物气体在高温下通过这些材料的床充分时间来再生，以除去吸附的 硫或重质烃分别用作过程的副产物。

    Method for oxidizing hydrogen sulfide to elemental sulfur
    4.
    发明授权
    Method for oxidizing hydrogen sulfide to elemental sulfur 有权
    将硫化氢氧化成元素硫的方法

    公开(公告)号：US06299851B1

    公开(公告)日：2001-10-09

    申请号：US09334851

    申请日：1999-06-17

    申请人： Kuo-Tseng Li ,  Ren-Hai Chi

    发明人： Kuo-Tseng Li ,  Ren-Hai Chi

    IPC分类号： C01B1704

    CPC分类号： B01J23/22 ,  C01B17/0465 ,  Y10S502/517

    摘要： A method for selectively oxidizing hydrogen sulfide to elemental sulfur is disclosed. The method is performed at a temperature ranged from 50 to 400° C. and at a pressure ranged from 0.1 to 50 atm. The elemental sulfur can be effectively recovered from a gas mixture containing hydrogen sulfide in the presence of a catalyst. The catalyst includes a vanadium-containing material and a catalytic substance selected from the group consisting of scandium (Sc), yttrium (Y), lanthanum (La), samarium (Sm) and compounds thereof. In another embodiment, this catalyst further includes an antimony-containing promoter (antimony compounds) which further exhibit a more effective catalytic performance.

    摘要翻译： 公开了一种将硫化氢选择性氧化成元素硫的方法。 该方法在50-400℃的温度和0.1-50atm的压力下进行。 在催化剂存在下，可以从包含硫化氢的气体混合物中有效回收元素硫。 催化剂包括含钒材料和选自钪（Sc），钇（Y），镧（La），钐（Sm）及其化合物的催化物质。 在另一个实施方案中，该催化剂还包含进一步表现出更有效催化性能的含锑促进剂（锑化合物）。

    Process for selective oxidation of hydrogen sulfide to elemental sulfur
    7.
    发明授权
    Process for selective oxidation of hydrogen sulfide to elemental sulfur 失效
    将硫化氢选择性氧化成元素硫的方法

    公开(公告)号：US5891415A

    公开(公告)日：1999-04-06

    申请号：US444812

    申请日：1995-05-17

    申请人： Tofik G. O. Alkhazov ,  Roland E. Meissner, III

    发明人： Tofik G. O. Alkhazov ,  Roland E. Meissner, III

    IPC分类号： B01D53/86 ,  B01J23/80 ,  C01B17/04

    CPC分类号： C01B17/0465 ,  B01D53/8612

    摘要： A process for selectively converting H.sub.2 S to S, utilizing a porous catalyst having the atomic proportions covered by the formula Fe.sub.A Zn.sub.B, wherein A has a value of 0.5 to 10 and B has a value of 1 to 2. The catalyst contains substantially no chromium. A gas stream comprising hydrogen sulfide and oxygen is passed over the catalyst at a temperature above the dew point of sulfur and up to about 300.degree. C.

    摘要翻译： 使用具有由式FeAZnB覆盖的原子比例的多孔催化剂选择性地将H 2 S转化为S的方法，其中A的值为0.5至10，B的值为1至2.催化剂基本上不含铬。 包含硫化氢和氧气的气流在高于硫的露点的温度下超过催化剂，高达约300℃

    Process for removal of hydrogen sulfide from gas streams
    10.
    发明授权
    Process for removal of hydrogen sulfide from gas streams 失效
    从气流中除去硫化氢的方法

    公开(公告)号：US4311683A

    公开(公告)日：1982-01-19

    申请号：US161694

    申请日：1980-06-23

    申请人： Robert H. Hass ,  Rowland C. Hansford

    发明人： Robert H. Hass ,  Rowland C. Hansford

    IPC分类号： C01B17/04

    CPC分类号： C01B17/0465

    摘要： 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.

    摘要翻译： 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。