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    Carbon dioxide fractionalization process
    12.
    发明授权
    Carbon dioxide fractionalization process 有权

    公开(公告)号：US10316260B2

    公开(公告)日：2019-06-11

    申请号：US15339610

    申请日：2016-10-31

    申请人： Pilot Energy Solutions, LLC

    发明人： Eric Prim

    IPC分类号： C10G70/06 ,  B01D3/14 ,  C10G21/00 ,  C10G21/16 ,  C10G21/06 ,  E21B43/16 ,  C10G7/02 ,  C10G21/28 ,  C10G31/00 ,  C10G70/04 ,  E21B43/40

    摘要： A method comprises separating a hydrocarbon feed stream having carbon dioxide into a heavy hydrocarbon stream and a light hydrocarbon stream. The light hydrocarbon stream is separated into a carbon dioxide-rich stream and a carbon dioxide-lean stream. At least a portion of the carbon dioxide-lean stream is fed to a hydrocarbon sweetening process. Another method comprises receiving a hydrocarbon feed stream that comprises 30 molar percent to 80 molar percent carbon dioxide. A heavy hydrocarbon stream is separated from the hydrocarbon feed stream, wherein the heavy hydrocarbon stream comprises at least 90 molar percent C3+ hydrocarbons. A carbon dioxide-rich stream is separated from the hydrocarbon feed stream, wherein the carbon dioxide-rich stream comprises at least 95 molar percent carbon dioxide.

    METHOD FOR SEPARATING A HYDROCARBON MIXTURE, SEPARATING PLANT AND STEAM CRACKING PLANT
    16.
    发明申请
    METHOD FOR SEPARATING A HYDROCARBON MIXTURE, SEPARATING PLANT AND STEAM CRACKING PLANT 审中-公开
    分离混合气体的方法，分离装置和蒸汽破碎装置

    公开(公告)号：US20160319206A1

    公开(公告)日：2016-11-03

    申请号：US15036389

    申请日：2014-10-30

    申请人： LINDE AKTIENGESELLSCHAFT

    发明人： Helmut Fritz ,  Tobias Sinn

    IPC分类号： C10G70/04 ,  B01D3/14 ,  B01D3/32 ,  C10G70/02 ,  C10G9/00

    摘要： The invention relates to a method for separating a hydrocarbon mixture (C), which is obtained at least in part by steam cracking (10) and which contains at least hydrocarbons having one, two and three carbon atoms, including ethane and ethylene, a first fraction (C2+, C2−) initially being obtained from the hydrocarbon mixture (C) by separating off other components at least in part, said fraction containing the predominant part of the hydrocarbons having two or more carbon atoms previously contained in the hydrocarbon mixture (C) or the predominant part of the hydrocarbons having two or fewer carbon atoms previously contained in the hydrocarbon mixture (C), further fractions (C1, C2, C2H4, C3+, C2H6) subsequently being obtained from the first fraction (C2+, C2−). A fraction (R, S) containing ethane is separated off, in parallel with or downstream from the at least partial separation of the other components from the hydrocarbon mixture (C), in an amount which reduces the ethane content in the first fraction (C2+, C2−) to less than 25%, the fraction (R, S) containing ethane being low in or free from other hydrocarbons having two carbon atoms. The present invention further relates to a separation system (30), to a corresponding steam cracking system and to a method for retrofitting a steam cracking system.

    摘要翻译： 本发明涉及一种用于分离烃混合物（C）的方法，该方法至少部分通过蒸汽裂解（10）获得并且至少包含具有一个，两个和三个碳原子的烃，包括乙烷和乙烯，第一 最初通过从烃混合物（C）获得的馏分（C2 +，C2-）通过至少部分地分离出其它组分，所述馏分含有主要部分烃原料中预先含有两个或多个碳原子的烃（C ）或烃混合物（C）中预先含有两个或更少碳原子的烃的主要部分，随后从第一馏分（C2 +，C2-）得到另外的馏分（C1，C2，C2H4，C3 +，C2H6） 。 将含有乙烷的级分（R，S）与其它组分与烃混合物（C）的至少部分分离平行或下游分离，其量可降低第一级分（C 2+）中的乙烷含量， ，C2-）至小于25％，含有乙烷的级分（R，S）低于或不含有两个碳原子的其它烃。 本发明还涉及一种分离系统（30），相应的蒸汽裂解系统和一种用于改装蒸汽裂解系统的方法。

    Hydrocarbon gas processing
    17.
    发明授权
    Hydrocarbon gas processing 有权
    烃类气体加工

    公开(公告)号：US06915662B2

    公开(公告)日：2005-07-12

    申请号：US10003453

    申请日：2001-10-26

    申请人： John D. Wilkinson ,  Hank M. Hudson ,  Michael C. Pierce

    发明人： John D. Wilkinson ,  Hank M. Hudson ,  Michael C. Pierce

    IPC分类号： C07C7/00 ,  C10G5/06 ,  C10G70/04 ,  F25J3/02

    CPC分类号： C10G70/04 ,  C07C7/005 ,  C10G5/06 ,  F25J3/0209 ,  F25J3/0219 ,  F25J3/0233 ,  F25J3/0238 ,  F25J2200/02 ,  F25J2200/70 ,  F25J2200/74 ,  F25J2200/90 ,  F25J2205/04 ,  F25J2210/12 ,  F25J2220/66 ,  F25J2235/60 ,  F25J2240/02 ,  F25J2245/02 ,  F25J2270/02 ,  F25J2290/40 ,  Y02C10/12

    摘要： A process for the recovery of ethane, ethylene, propane, propylene and heavier hydrocarbon components from a hydrocarbon gas stream is disclosed. In recent years, the preferred method of separating a hydrocarbon gas stream generally includes supplying at least portions of the gas stream to a fractionation tower having at least one reboiler, and often one or more side reboilers, to supply heat to the column by withdrawing and heating some of the tower liquids to produce stripping vapors that separate the more volatile components from the desired components. The reboiler and side reboilers (if any) are typically integrated into the feed stream cooling scheme to provide at least a portion of the refrigeration needed to condense the desired components for subsequent fractionation in the distillation column. In the process disclosed, the tower reboiling scheme is modified to use one or more tower liquid distillation streams from a point higher in the column than is used in the conventional reboiling scheme, providing colder stream(s) for the reboiler(s) that allow more effective cooling of the feed streams and thereby improve the efficiency with which the desired components are recovered. In addition, the tower liquid streams withdrawn from a higher point in the column contain larger quantities of the more volatile components, which when vaporized provide better stripping of undesirable components like carbon dioxide without reducing the recovery of the desired components. The heated distillation stream is returned to a lower point on the fractionation tower that is separated from the withdrawal point by at least one theoretical stage.

    摘要翻译： 公开了从烃气流中回收乙烷，乙烯，丙烷，丙烯和较重烃组分的方法。 近年来，分离烃气流的优选方法通常包括将气流的至少一部分供应至具有至少一个再沸器的分馏塔，并且通常是一个或多个侧再沸器，以通过抽出和 加热一些塔式液体以产生汽提蒸汽，其将更易挥发的组分与期望的组分分离。 再沸器和侧面再沸器（如果有的话）通常集成到进料流冷却方案中，以提供冷凝所需组分所需的至少一部分制冷剂用于随后在蒸馏塔中分馏。 在所公开的方法中，塔式再沸腾方案被修改为使用一种或多种塔式液体蒸馏物流，其比在常规再沸腾方案中使用的塔中高一点，为再沸器提供较冷的流，其允许 更有效地冷却进料流，从而提高回收所需组分的效率。 此外，从柱中较高点排出的塔液流含有较大量的挥发性较高的组分，当汽化时，会提供更好的汽提不需要的组分如二氧化碳，而不会降低所需组分的回收率。 加热的蒸馏物流返回到分离塔上的一个较低点，其从提取点离开至少一个理论阶段。

    Process for recovering alkenes from cracked hydrocarbon streams
    18.
    发明授权
    Process for recovering alkenes from cracked hydrocarbon streams 失效
    从裂解烃流中回收烯烃的方法

    公开(公告)号：US5744687A

    公开(公告)日：1998-04-28

    申请号：US231559

    申请日：1994-04-22

    申请人： Ramakrishnan Ramachandran ,  Loc H. Dao

    发明人： Ramakrishnan Ramachandran ,  Loc H. Dao

    IPC分类号： C10G70/04 ,  C07C7/13

    CPC分类号： C10G70/046 ,  Y10S95/902

    摘要： A hydrocarbon stream is cracked to produce a hot gaseous stream which is compressed and cooled to condense almost all of the hydrocarbons contained in the stream. A noncondensed stream remaining after the condensation step, comprised predominantly of hydrogen and C.sub.1 to C.sub.3 hydrocarbons, is subjected to pressure swing adsorption or temperature swing adsorption at an adsorption temperature of about 0.degree. to about 250.degree. C. in a bed of adsorbent which selectively adsorbs ethylene and propylene, thereby adsorbing substantially all of the ethylene and propylene from the gas stream. The ethylene and/or propylene is recovered upon bed regeneration.

    摘要翻译： 烃流被裂化以产生热气流，其被压缩和冷却以使包含在流中的几乎所有的烃都冷凝。 在主要由氢和C1至C3烃组成的缩合步骤之后残留的非冷凝流在吸附床中在约0至约250℃的吸附温度下进行变压吸附或变温吸附，其选择性 吸附乙烯和丙烯，从而从气流中吸收基本上所有的乙烯和丙烯。 在床再生时回收乙烯和/或丙烯。

    Process for recovering olefins from cat-cracked gas without accumulating undesirable oxides of nitrogen
    19.
    发明授权
    Process for recovering olefins from cat-cracked gas without accumulating undesirable oxides of nitrogen 失效
    从催化裂化气体回收烯烃的方法，而不会积聚不需要的氮氧化物

    公开(公告)号：US5710357A

    公开(公告)日：1998-01-20

    申请号：US464492

    申请日：1995-06-05

    申请人： Dane Clark Grenoble ,  Roy Thomas Halle ,  William Douglas Thomson

    发明人： Dane Clark Grenoble ,  Roy Thomas Halle ,  William Douglas Thomson

    IPC分类号： C07C7/11 ,  B01D53/14 ,  B01D53/54 ,  C07C11/02 ,  C10G55/06 ,  C10G70/04 ,  C10G70/06 ,  F25J3/02 ,  C07C7/00 ,  F25J3/00

    CPC分类号： C10G70/041 ,  C10G70/06 ,  F25J3/0209 ,  F25J3/0219 ,  F25J3/0233 ,  F25J3/0238 ,  F25J3/0242 ,  F25J3/0247 ,  F25J3/0252 ,  F25J2205/50 ,  F25J2210/12 ,  F25J2215/62 ,  F25J2215/64 ,  F25J2220/02

    摘要： A safe, effective, and economical method is provided for recovering olefins from cat-cracked gases without accumulating dangerous amounts of nitrogen oxides. A stream of cat-cracked gas first is scrubbed to remove acid gases, including nitrogen dioxide (NO.sub.2), and then is passed through a depropanizer fractionation tower. Hydrocarbons having four or more carbon atoms are recovered in the bottoms of the depropanizer, and the overhead from the depropanizer--which is composed of hydrocarbons having three or fewer carbon atoms--is sent to an absorber demethanizer tower. Hydrocarbons having two or more carbon atoms are recovered in the bottoms from the absorber demethanizer tower, where temperatures are no lower than about -45.56.degree. C. (-50.degree. F.) The overhead from the absorber demethanizer tower--which is composed of methane, hydrogen, and trace amounts of nitrogen oxide, C.sub.2, and absorbent (C.sub.3)--then is chilled to condense and recover trace amounts of C.sub.2 and heavier gases, including trace amounts of the C.sub.3 absorbent, at temperatures of about -101.11.degree. C. (-150.degree. F.) or higher. Thus, recovery of desired hydrocarbons from the cat-cracked gas is conducted at temperatures that are high enough to prevent the oxidation of nitric oxide (NO) to form nitrogen dioxide (NO.sub.2) and high enough to prevent the accumulation of unwanted nitrogen oxides.

    摘要翻译： 提供了一种安全，有效和经济的方法来回收来自猫裂纹气体的烯烃，而不会累积危险的氮氧化物。 首先将一批猫裂纹气体洗涤以除去包括二氧化氮（NO2）在内的酸性气体，然后通过脱丙烷塔分馏塔。 具有四个或更多个碳原子的烃在脱丙烷塔的底部回收，并且由脱丙烷化器（其由具有三个或更少碳原子的烃组成）的塔顶馏出物被送至吸收器脱甲烷塔。 具有两个或更多个碳原子的烃在来自吸收器脱甲烷塔的底部回收，其中温度不低于约-45.56℃（-50°F）来自吸收器脱甲烷塔的塔顶馏出物，其由甲烷 ，氢气和痕量的氮氧化物C2和吸收剂（C3））冷却以在约-101.11℃的温度下冷凝和回收痕量的C2和更重的气体，包括痕量的C3吸收剂。 （-150°F）以上。 因此，从破裂气体回收所需的烃是在足够高的温度下进行的，以防止一氧化氮（NO）氧化形成二氧化氮（NO 2），并且足够高以防止不想要的氮氧化物的积聚。