Process for the removal of HCN from gas mixtures
    1.
    发明授权
    Process for the removal of HCN from gas mixtures 失效
    从气体混合物中除去HCN的方法

    公开(公告)号:US5660807A

    公开(公告)日:1997-08-26

    申请号:US553588

    申请日:1996-05-13

    Abstract: The invention relates to a process for the removal of HCN from gas mixtures that contain at least HCN and sulfur compounds, especially from gas mixtures that are obtained by partial oxidation of hydrocarbons, by catalytic decomposition of HCN, as well as a catalyst for the decomposition of HCN. According to the invention, the gas mixture is brought into contact with a catalyst which decomposes the HCN by hydrogenation and/or by hydrolysis and COS that is contained in the gas mixture is decomposed at least partially in this catalyst by hydrolysis. Advantageously, a catalyst that is based on titanium oxide and/or zirconium oxide as a vehicle and that contains chromium oxide as an active component is used. Advantageously, the catalyst is reduced during catalyst production or before use with H.sub.2 and/or a reducing gas at temperatures above the operating temperature of catalytic decomposition.

    Abstract translation: PCT No.PCT / EP94 / 01646 Sec。 371日期:1996年5月13日 102(e)日期1996年5月13日PCT提交1994年5月20日PCT公布。 出版物WO94 / 29004 日期1994年12月22日本发明涉及从气体混合物中除去HCN的方法,所述气体混合物至少含有HCN和硫化合物,特别是通过烃的部分氧化获得的气体混合物,HCN的催化分解以及 用于分解HCN的催化剂。 根据本发明,使气体混合物与通过氢化和/或水解分解HCN的催化剂接触,并且气体混合物中包含的COS至少部分地通过水解在该催化剂中分解。 有利地,使用基于氧化钛和/或氧化锆作为载体并且含有氧化铬作为活性组分的催化剂。 有利地,催化剂在催化剂生产期间或在高于催化分解操作温度的温度下用H2和/或还原气体使用之前被还原。

    Process for the purification of crude gases with simultaneous production
of synthesis gas and fuel gas
    2.
    发明授权
    Process for the purification of crude gases with simultaneous production of synthesis gas and fuel gas 失效
    同时生产合成气和燃料气体来纯化粗气体的方法

    公开(公告)号:US4938783A

    公开(公告)日:1990-07-03

    申请号:US193607

    申请日:1988-05-13

    CPC classification number: B01D53/1462 C10K1/16 Y02C10/06 Y02P20/152

    Abstract: In a process for the purification of coal gasification gases, synthesis gas and fuel gas are simultaneously produced. In order to obtain a fuel gas rich in CO.sub.2, capable of handling fluctuations in demand, and to produce at the same time a highly concentrated H.sub.2 S fluid fraction, a portion of the crude gas, scrubbed to synthesis gas purity, is utilized for stripping out CO.sub.2 under pressure from scrubbing medium loaded exclusively with CO.sub.2. The partially stripped CO.sub.2 -loaded scrubbing medium is employed for the concentration of sulfur compounds in an H.sub.2 S/COS-loaded scrubbing medium.

    Abstract translation: 在煤气化气体的净化过程中,同时生产合成气和燃料气体。 为了获得能够处理需求波动的CO 2的燃料气体,并且同时产生高浓度的H 2 S流体馏分,将粗气体的一部分洗涤成合成气纯度用于汽提 二氧化碳在二氧化碳的压力下,由仅用二氧化碳充填的洗涤介质。 部分汽提的含CO 2的洗涤介质用于在H2S / COS负载的洗涤介质中浓缩硫化合物。

    Process for removing undesirable components from gases
    3.
    发明授权
    Process for removing undesirable components from gases 失效
    从气体中除去不良成分的方法

    公开(公告)号:US4780115A

    公开(公告)日:1988-10-25

    申请号:US39874

    申请日:1987-04-20

    Applicant: Gerhard Ranke

    Inventor: Gerhard Ranke

    Abstract: In a process for the regeneration of a scrubbing medium which has been utilized in a scrubbing operation and therein loaded with scrubbed-out components, the scrubbing medium is expanded and regenerated and hence can be reused in the scrubbing operation. In order to be able to subject expansion gases obtained during the expansion to an after-treatment under elevated pressure, or to be able to discharge these expansion gases under a higher pressure, the loaded scrubbing medium is expanded in at least two stages. Expansion in one stage is performed by means of a liquid-jet compressor and the expansion gases of a subsequent expansion stage are brought to an elevated pressure by means of the liquid-jet compressor.

    Abstract translation: 在用于擦洗操作中并且其中装有洗涤组分的洗涤介质的再生过程中,洗涤介质被膨胀和再生,因此可以在洗涤操作中重复使用。 为了能够在膨胀期间获得的膨胀气体在升高的压力下进行后处理,或者能够在更高压力下排出这些膨胀气体,则负载的洗涤介质至少扩展两个阶段。 通过液体喷射式压缩机进行一级的膨胀,借助于液体喷射压缩机将后续膨胀级的膨胀气体升至高压。

    Multiple temperature level regeneration of CO.sub.2 from physical solvent
    4.
    发明授权
    Multiple temperature level regeneration of CO.sub.2 from physical solvent 失效
    物理溶剂中CO 2的多重温度水平再生

    公开(公告)号:US4609384A

    公开(公告)日:1986-09-02

    申请号:US677956

    申请日:1984-12-04

    CPC classification number: B01D53/1462 Y02C10/06

    Abstract: To regenerate a physical solvent, loaded with sour gases, especially CO.sub.2 and H.sub.2 S, the loaded solvent is treated with a stripping gas and/or is expanded to separate absorbed CO.sub.2 and the resultant solvent is subjected to thermal regeneration to desorb H.sub.2 S. To reduce energy requirements during regeneration, the CO.sub.2 desorption is conducted on at least two different temperature levels, the second being for example 30.degree.-80.degree. C. higher than the first, with the first being conducted, e.g., at about those low temperatures conventional to low temperature absorption systems.

    Abstract translation: 为了再生装载有酸性气体,特别是CO 2和H 2 S的物理溶剂,负载的溶剂用汽提气体处理和/或膨胀以分离吸收的CO 2,所得溶剂经受热再生以解吸H2S。 为了减少再生过程中的能量需求,二氧化碳解吸是在至少两个不同的温度水平进行的,第二个例如比第一个温度高出30°-80°C,第一个被引导,例如约在那些低温 常规用于低温吸收系统。

    Process for the simultaneous removal of H.sub.2 S, SO.sub.2 and
elemental sulfur from gaseous mixtures
    5.
    发明授权
    Process for the simultaneous removal of H.sub.2 S, SO.sub.2 and elemental sulfur from gaseous mixtures 失效
    同时从气体混合物中除去H 2 S,SO 2和元素硫的方法

    公开(公告)号:US4530827A

    公开(公告)日:1985-07-23

    申请号:US545427

    申请日:1983-10-26

    CPC classification number: B01D53/523 C01B17/05 C10K1/16

    Abstract: A process for the simultaneous removal of H.sub.2 S, SO.sub.2 and elemental sulfur from gaseous mixtures, comprises treating the gaseous mixture with a solvent. After the solvent becomes loaded with the components to be removed, it is regenerated and reused. In order to obtain savings in costs and energy, the sulfur is separated from the loaded solvent by lowering the temperature thereof. In this way, chemical regeneration of the scrubbing medium takes place within the cycle eliminating the requirement for outside regenerating apparatus.

    Abstract translation: 从气体混合物中同时除去H 2 S,SO 2和元素硫的方法包括用溶剂处理气态混合物。 溶剂加载待除去的组分后,再次再生再利用。 为了节省成本和能量,通过降低其温度将硫与负载的溶剂分离。 以这种方式,洗涤介质的化学再生在循环内进行,消除了对外部再生装置的要求。

    Control of carbon monoxide partial pressure in sour gas absorption system
    6.
    发明授权
    Control of carbon monoxide partial pressure in sour gas absorption system 失效
    酸性气体吸收系统中一氧化碳分压的控制

    公开(公告)号:US4478799A

    公开(公告)日:1984-10-23

    申请号:US447821

    申请日:1982-12-08

    CPC classification number: B01D53/1456 B01D53/526 C10K1/165

    Abstract: In the removal of sour gases, H.sub.2 S in particular, from CO-containing gaseous mixtures containing heavy metal carbonyls by scrubbing under pressure at temperatures of below 0.degree. C. with a scrubbing medium, the scrubbing medium is regenerated by inter alia, being heated by means of heat exchangers, and such exchangers are normally fouled by precipitates of metal sulfides which owe their presence to the decomposition of the metal carbonyls to form reactive heavy metal which combines with sulfide ion. To avoid fouling of the heat exchangers, the CO partial pressure is increased during the heating of the loaded scrubbing medium, to above the partial pressure of the CO in equilibrium with the carbonyls in the scrubbing medium thereby preventing the decomposition of the carbonyls.

    Abstract translation: 在通过用洗涤介质在低于0℃的温度下在压力下进行擦洗来除去特别是含有重金属羰基化物的含CO气态混合物的酸性气体的硫化氢,洗涤介质尤其是被 这种交换器通常被金属硫化物的沉淀物所污染,这些金属硫化物的存在使其分解成金属羰基化合物,形成与硫化物离子结合的反应性重金属。 为了避免热交换器的结垢,在加载的洗涤介质的加热期间CO分压增加到与洗涤介质中的羰基平衡的CO分压之上,从而防止羰基分解。

    Scrubbing system yielding high concentration of hydrogen sulfide
    7.
    发明授权
    Scrubbing system yielding high concentration of hydrogen sulfide 失效
    洗涤系统产生高浓度的硫化氢

    公开(公告)号:US4430316A

    公开(公告)日:1984-02-07

    申请号:US328553

    申请日:1981-12-08

    Abstract: In a system for the separation of sour gases especially hydrogen sulfide and carbon dioxide from a raw gaseous mixture e.g., hydrogen-containing in order to form a purified gaseous mixture, comprising scrubbing the gaseous mixture in a first scrubbing stage with a physical scrubbing liquid e.g., methanol having a higher absorbability for hydrogen sulfide than for carbon dioxide, withdrawing from the scrubbing stage a first stream of scrubbing liquid loaded with hydrogen sulfide and carbon dioxide, and regenerating the loaded scrubbing liquid to form (a) a gaseous phase containing hydrogen sulfide, and (b) regenerated scrubbing liquid, the improvement of scrubbing said gaseous phase containing hydrogen sulfide in a second scrubbing stage with a stream of scrubbing liquid capable of absorbing additional H.sub.2 S, e.g., a CO.sub.2 -depleted stream from an H.sub.2 S enrichment column; and subjecting resultant second stream of scrubbing liquid loaded with hydrogen sulfide to a separation stage, preferably rectification, to form a bottoms of regenerated scrubbing liquid and an overhead of a gaseous phase rich in hydrogen sulfide irrespective of whether the raw gaseous mixture has a very low H.sub.2 S concentration.

    Abstract translation: 在用于从原始气体混合物例如含氢气分离酸性气体,特别是硫化氢和二氧化碳的系统中,以形成纯化的气体混合物,其中包括在第一洗涤阶段用物理洗涤液洗涤气体混合物,例如 ,对于硫化氢具有比二氧化碳更高的吸收性的甲醇,从洗涤阶段退出装载有硫化氢和二氧化碳的第一洗涤液流,并再生装载的洗涤液以形成(a)含有硫化氢的气相 ,和(b)再生洗涤液,改进在第二洗涤阶段用能够吸收额外H 2 S的洗涤液流,例如来自H 2 S富集塔的CO 2贫化物流洗涤含有硫化氢的气相; 并将装有硫化氢的洗涤液的所得第二流经分离阶段,优选精馏,以形成富含硫化氢的气相的再生洗涤液的塔底物和塔顶馏出物,而不管原料气体混合物是否非常低 H2S浓度。

    Separation of gaseous components from a gaseous mixture by physical
scrubbing
    8.
    发明授权
    Separation of gaseous components from a gaseous mixture by physical scrubbing 失效
    通过物理洗涤将气体组分与气体混合物分离

    公开(公告)号:US4324567A

    公开(公告)日:1982-04-13

    申请号:US107119

    申请日:1979-12-26

    Abstract: In a process for separating and obtaining as product gases at least two gaseous components from a gaseous mixture containing same by scrubbing with a physical scrubbing liquid exhibiting a higher dissolving power for at least one of the components to be separated than for at least one other of these components, wherein a first scrubbing liquid stream, loaded with all of the components to be separated, and a second scrubbing liquid stream, merely containing proportions of the less soluble component or components, are withdrawn from the scrubbing stage; a gaseous fraction is liberated by expansion of the first scrubbing liquid stream, freed of the more soluble component or components by treatment with the second, likewise expanded scrubbing liquid stream and withdrawn as a first product stream; and the scrubbing liquid streams are finally subjected to a separation of the more soluble components as well as of residual proportions of the less soluble components, thus obtaining a second product gas, the improvement which comprises further expanding the scrubbing liquid streams to obtain a gaseous fraction prior to the separation serving for obtaining the second product gas, recompressing the thus-liberated, gaseous fraction and scrubbing the recompressed gaseous fraction with the second scrubbing liquid stream.

    Abstract translation: 在通过用待分离的至少一种待分离的物质洗涤液体洗涤的物理洗涤液中分离并获得作为产物气体至少两种气态组分的方法,其中至少两种 这些组分,其中装载有待分离的所有组分的第一洗涤液体流和仅含有较少可溶性组分或组分的比例的第二洗涤液体流从洗涤阶段中排出; 通过第一洗涤液体流的膨胀释放出气态馏分,通过用第二同样膨胀的洗涤液流处理并且作为第一产物流排出,从而消除更可溶的组分或组分。 并且洗涤液体流最终经受较可溶组分的分离以及较不溶性组分的残留比例的分离,从而获得第二产物气体,其改进包括进一步扩大洗涤液体流以获得气体馏分 在用于获得第二产物气体的分离之前,将由此释放的气态馏分重新压缩并用第二洗涤液体流洗涤再压缩的气体馏分。

    Process for the selective removal of inorganic and/or organic sulfur
compounds
    9.
    发明授权
    Process for the selective removal of inorganic and/or organic sulfur compounds 失效
    选择性去除无机和/或有机硫化合物的方法

    公开(公告)号:US5413627A

    公开(公告)日:1995-05-09

    申请号:US34798

    申请日:1993-03-01

    CPC classification number: B01D53/14 B01D53/1425 B01D53/1493 C10K1/14

    Abstract: For the selective removal of sulfur from gases, a physical scrubbing agent is used, comprising a heterocycle having five or more ring atoms, which contains two heteroatoms, one of which is nitrogen and the other of which is oxygen or nitrogen; and the heteroatoms in the rings of even member number of atoms occupy; one of the positions from 1,2 to 1,n/2 and, in the rings of uneven member number of atoms occupy one of the positions from 1,2 up to 1, (n-1)/2. Further, the nitrogen heteroatom(s) present in the ring is/are either double bonded or single bonded but, if single bonded, the nitrogen is organo-substituted.

    Abstract translation: 为了从气体中选择性除去硫,使用物理洗涤剂,其包含具有五个或更多个环原子的杂环,其含有两个杂原子,其中一个是氮,另一个是氧或氮; 并且偶数个原子的环中的杂原子占据; 位置从1,2到1,n / 2之一,并且在不均匀成员数原子的环中占据从1,2到1,(n-1)/ 2的位置之一。 此外,存在于环中的氮杂原子是双键或单键的,但如果单键键合,则氮被有机取代。

    Scrubbing of gas to recover light hydrocarbons
    10.
    发明授权
    Scrubbing of gas to recover light hydrocarbons 失效
    清洗气体以回收轻质烃

    公开(公告)号:US4797140A

    公开(公告)日:1989-01-10

    申请号:US896371

    申请日:1986-08-14

    CPC classification number: C07C7/11

    Abstract: For scrubbing C.sub.2+ or C.sub.3+ hydrocarbons from gaseous mixture containing hydrocarbons and/or inerts like H.sub.2' N.sub.2, CO and possibly acid gases, e.g. CO.sub.2 H.sub.2 S, COS e.g., natural gas and the like, the scrubbing medium consists essentially of compounds having one to two rings formed by 5 or 6 carbon atoms, wherein the compounds comprise, in total, at least 9 and at most 17 carbon atoms, and the rings are saturated unsaturated or partially saturated especially alkylated ring compounds of 9 or 10 carbon atoms, e.g. isomeric forms of trimethylbenzene, propylbenzene, propylcyclohexane, tetrahydronaphthalene, decahydronaphthalene.

    Abstract translation: 用于从含有碳氢化合物和/或惰性气体的气体混合物(如H2'N2,CO)和可能的酸性气体(例如酸性气体)中洗涤C2 +或C3 +烃。 CO 2 H 2 S,COS例如天然气等,洗涤介质基本上由具有一个或两个由5或6个碳原子形成的环的化合物组成,其中化合物总共包含至少9个且至多17个碳原子,以及 环是饱和的不饱和或部分饱和的,尤其是9或10个碳原子的烷基化环化合物,例如 三甲基苯,丙基苯,丙基环己烷,四氢萘,十氢萘的异构体形式。

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