NOVEL PROCESS DESIGNS FOR INCREASED SELECTIVITY AND CAPACITY FOR HYDROGEN SULFIDE CAPTURE FROM ACID GASES
    2.
    发明申请
    NOVEL PROCESS DESIGNS FOR INCREASED SELECTIVITY AND CAPACITY FOR HYDROGEN SULFIDE CAPTURE FROM ACID GASES 审中-公开
    新工艺设计提高选择性和容量,从酸性气体中获取硫化氢

    公开(公告)号:WO2017209849A1

    公开(公告)日:2017-12-07

    申请号:PCT/US2017/028227

    申请日:2017-04-19

    IPC分类号: B01D53/14 B01D53/18

    摘要: A system and process for selectively separating H 2 S from a gas mixture which also comprises CO 2 is disclosed. A water recycle stream is fed to the absorber in order to create a higher concentration absorbent above the recycle feed and having a greater H 2 S selectivity at lower acid gas loadings, and a more dilute absorbent below the recycle feed and having a greater H 2 S selectivity at higher acid gas loadings. Also disclosed is a system and process for selectively separating H 2 S by utilizing two different absorbents, one absorbent for the upper section of the absorber, tailored to have a greater H 2 S selectivity at lower acid gas loadings, and a second absorbent for the lower section of the absorber, tailored to have a greater H 2 S selectivity at higher acid gas loadings.

    摘要翻译: 公开了用于从还包含CO 2的气体混合物中选择性分离H 2 S的系统和方法。 将水再循环料流供入吸收塔以便在再循环进料之上产生高浓度的吸收剂,并且在较低的酸性气体负载下具有更高的H 2 S选择性,并且在再循环之下具有更稀的吸收剂 进料并且在较高酸性气体负载下具有更高的H 2 S选择性。 还公开了通过利用两种不同的吸收剂选择性地分离H 2 S的系统和方法,所述吸收剂用于吸收器上部的一种吸收剂,具有更高的H 2 / 在较低酸性气体负载下的S选择性和用于吸收体下部的第二吸收剂,在较高的酸性气体负载下适合具有更高的H 2 S选择性。

    COMPOSITIONS AND METHODS FOR REMOVING HEAVY METALS FROM FLUIDS
    4.
    发明申请
    COMPOSITIONS AND METHODS FOR REMOVING HEAVY METALS FROM FLUIDS 审中-公开
    用于从流体中除去重金属的组合物和方法

    公开(公告)号:WO2017100089A1

    公开(公告)日:2017-06-15

    申请号:PCT/US2016/064588

    申请日:2016-12-02

    摘要: A sulfidic complexing agent is disclosed that includes a suspension or a solution formed by a reaction between a water-soluble metal compound and a water-soluble sulfidic compound. The sulfidic complexing agent has a pH of from about 5 to about 11 and a molar ratio of metal to sulfur of from about 0.1 to about 1,000. The sulfidic complexing agent is useful for removing elemental mercury from a hydrocarbon fluid by contacting the hydrocarbon fluid with the sulfidic complexing agent. The molar ratio of sulfur in the sulfidic complexing agent to mercury in the hydrocarbon fluid is from about 50 to about 2,500. Also disclosed is a method for concurrently transporting and removing a trace amount of volatile mercury in a CO 2 -containing natural gas stream extracted from a subterranean formation. The natural gas stream is transported in a pipeline into which the sulfidic complexing agent is injected. Also disclosed is a method for capturing gas phase elemental mercury from a gas stream in the overhead section of a crude oil distillation unit by contacting the gas stream with the sulfidic complexing agent in the overhead section of the distillation unit to form a treated gas stream.

    摘要翻译: 公开了一种包含悬浮液或通过水溶性金属化合物与水溶性硫化合物之间的反应形成的溶液的硫化络合剂。 该硫化络合剂的pH值为约5至约11,金属与硫的摩尔比为约0.1至约1,000。 通过使烃流体与硫化络合剂接触,硫化络合剂可用于从烃流体中除去元素汞。 硫化络合剂中的硫与烃流体中的汞的摩尔比为约50至约2,500。 还公开了一种同时运输和去除从地下地层提取的含CO 2天然气流中的微量挥发性汞的方法。 天然气流在硫化络合剂注入的管道中输送。 还公开了一种用于通过使原料蒸馏装置的塔顶部分中的气流与蒸馏装置的塔顶部分中的含硫络合剂接触以形成处理过的气体物流而从气流中捕集气相元素汞的方法。