Nitrogen removal from natural gas
    2.
    发明授权
    Nitrogen removal from natural gas 有权
    天然气除氮

    公开(公告)号:US09003829B2

    公开(公告)日:2015-04-14

    申请号:US13105048

    申请日:2011-05-11

    Abstract: The invention relates to a method for the separation of a hydrocarbon-rich, nitrogen-containing feed fraction (1, 101), preferably natural gas, wherein the feed fraction (1, 101) is at least in part liquefied (E1, E2) and divided by rectification (T1) into a nitrogen-enriched fraction (14, 110) and a hydrocarbon-rich, nitrogen-depleted fraction (11, 111) and wherein, in the upper region of the rectification (T1), a nitrogen-enriched stream (14) is taken off, cooled (E3) and applied (20) at least in part to the rectification (T1) as reflux and/or the nitrogen-enriched fraction (110) is cooled and partially condensed (E3), applied at least in part to the rectification (T1) as reflux (115) and the remaining stream (116) of the nitrogen-enriched fraction (110) is subjected to a double-column process (T3). According to the invention, in the middle region of the rectification (T1), a carbon-dioxide-poor stream (13, 113) which serves for cooling (E3) the nitrogen-enriched substream (14) and/or cooling (E3) the nitrogen-enriched fraction (110) is taken off and the feed fraction is rectified (T1) in a separation column (T1) having a dividing wall (W), wherein the dividing wall (W) is arranged at least in the region of the separation column (T1) in which the feed fraction (2, 4, 5, 102, 104, 105) is fed to the separation column (T1) and the carbon-dioxide-poor stream (13, 113) is taken off.

    Abstract translation: 本发明涉及一种用于分离富含烃的含氮进料馏分(1,101)(优选天然气)的方法,其中进料馏分(1,101)至少部分液化(E1,E2) 并通过精馏(T1)分离成富氮馏分(14,110)和富含烃的贫氮馏分(11,111),其中在精馏(T1)的上部区域中, 冷却(E3)并且至少部分地将精馏(T1)作为回流和/或富氮级分(110)冷却并部分冷凝(E3),将富集的物流(14) 至少部分地作为回流(115)的精馏(T1)施加,富氮级分(110)的剩余物流(116)进行双塔法(T3)。 根据本发明,在整流(T1)的中间区域,用于冷却(E3)富氮子流(14)和/或冷却(E3)的二氧化碳贫流(13,113) 取出富氮馏分(110),在具有分隔壁(W)的分离塔(T1)中进料馏分(T1)进行精馏(T1),其中分隔壁(W)至少排列在 取出供给到分离塔(T1)的进料馏分(2,4,5,102,104,105)和不良的二氧化碳流(13,113)的分离塔(T1)。

    POWER GENERATION FROM LOW-TEMPERATURE HEAT
    4.
    发明申请
    POWER GENERATION FROM LOW-TEMPERATURE HEAT 审中-公开
    从低温发热

    公开(公告)号:US20130036737A1

    公开(公告)日:2013-02-14

    申请号:US13569592

    申请日:2012-08-08

    CPC classification number: F01K13/02 F01K25/10

    Abstract: The invention relates to a method for converting heat energy into mechanical energy by means of a Rankine cycle. In the Rankine cycle the circulating working fluid is pumped to a pressure above its critical pressure prior to heat exchange with an external medium. During the heat exchange with the external medium, the working fluid is heated to a temperature above its critical temperature and sufficiently high for the working fluid to expand without partial condensation. The working fluid is then expanded and condensed. The maximum pressure of the working fluid is controlled by means of an expander controllable with regard to the mass flow rate of the working fluid and/or a pump controllable with regard to the mass flow rate of the working fluid.

    Abstract translation: 本发明涉及通过兰金循环将热能转换成机械能的方法。 在兰金循环中,在与外部介质进行热交换之前,将循环的工作流体泵送到高于其临界压力的压力。 在与外部介质的热交换期间,工作流体被加热到高于其临界温度的温度,并且足够高以使工作流体膨胀而没有部分冷凝。 然后将工作流体膨胀和冷凝。 工作流体的最大压力通过相对于工作流体的质量流量可控的膨胀器和/或相对于工作流体的质量流量可控的泵来控制。

    Method for cooling a single-component or multi-component stream
    5.
    发明申请
    Method for cooling a single-component or multi-component stream 审中-公开
    用于冷却单组分或多组分流的方法

    公开(公告)号:US20120198883A1

    公开(公告)日:2012-08-09

    申请号:US13367614

    申请日:2012-02-07

    Abstract: The invention relates to a method for cooling a single-component or multi-component stream, in particular a hydrocarbon-rich fraction, by indirect heat exchange with the refrigerant mixture of a refrigerant mixture circuit. The refrigerant mixture is compressed in at least two stages and is separated into a lower-boiling refrigerant mixture fraction compressed to the ultimate pressure of the refrigerant mixture circuit and at least one higher-boiling refrigerant mixture fraction compressed to an intermediate pressure. The latter is pumped (P11) to the pressure of the former and the two fractions are combined before or immediately on commencement of indirect heat exchange.

    Abstract translation: 本发明涉及通过与制冷剂混合物回路的制冷剂混合物的间接热交换来冷却单组分或多组分流,特别是富烃级分的方法。 制冷剂混合物至少分两个阶段被压缩,并被分成压缩到制冷剂混合回路的极限压力的低沸点制冷剂混合物馏分和至少一个压缩到中间压力的高沸点制冷剂混合物馏分。 后者被泵送(P11)到前者的压力,两个馏分在间接热交换开始之前或之后组合。

    NATURAL GAS LIQUEFACTION
    8.
    发明申请
    NATURAL GAS LIQUEFACTION 审中-公开
    天然气液化

    公开(公告)号:US20120060553A1

    公开(公告)日:2012-03-15

    申请号:US13226633

    申请日:2011-09-07

    Applicant: Heinz BAUER

    Inventor: Heinz BAUER

    Abstract: The invention relates to a method for liquefying a hydrocarbon-rich feed fraction, preferably natural gas, against a nitrogen refrigeration cycle. A feed fraction is cooled against gaseous nitrogen that is to be warmed, and liquefied against liquid nitrogen that is to be vaporized. The feed fraction is cooled and liquefied in an at least three-stage heat-exchange process. In the first section of the heat-exchange process, the feed fraction is cooled against superheated gaseous nitrogen to the extent that an essentially complete separation of the relatively heavy components is achievable. In the second section, the feed fraction freed from relatively heavy components is partially liquefied against gaseous nitrogen that is to be superheated. In the third section, the feed fraction is liquefied against nitrogen that is to be partially vaporized.

    Abstract translation: 本发明涉及一种用于液化富氮进料馏分,优选天然气的氮气制冷循环的方法。 将进料馏分与要加热的气态氮冷却,并液化成待蒸发的液氮。 进料馏分在至少三级热交换过程中被冷却和液化。 在热交换过程的第一部分中,将进料馏分与过热气态氮冷却至可实现基本上完全分离较重组分的程度。 在第二部分中,从相对较重的组分中除去的进料馏分部分地液化成待过热的气态氮。 在第三部分中,进料部分被液化以抵制待部分汽化的氮。

    METHOD FOR REMOVING NITROGEN
    10.
    发明申请
    METHOD FOR REMOVING NITROGEN 审中-公开
    去除氮的方法

    公开(公告)号:US20110209499A1

    公开(公告)日:2011-09-01

    申请号:US13127724

    申请日:2009-11-03

    Abstract: A process is described for separating off a nitrogen-rich fraction from a feed fraction containing essentially nitrogen and hydrocarbons, wherein the feed fraction is separated by rectification into a nitrogen-rich fraction and a methane-rich fraction and wherein the methane-rich fraction for the purpose of cold generation is vaporized and superheated at a pressure as high as possible against the feed fraction which is to be cooled.According to the invention the still liquid or partially vaporized methane-rich fraction (5′) is fed to a circulation vessel (D), only the liquid fraction of the methane-rich fraction (5′) occurring in the circulation vessel (D) is completely vaporized, preferably in natural circulation, and the top product (7) of the circulation vessel (D) is superheated (E1).

    Abstract translation: 描述了一种用于从基本上含有氮和烃的进料馏分中分离富氮馏分的方法,其中通过精馏将进料馏分分离成富氮馏分和富含甲烷的馏分,其中富含甲烷的馏分用于 冷发生的目的是在对待冷却的进料馏分尽可能高的压力下蒸发和过热。 根据本发明,仍然液体或部分蒸发的富甲馏分(5')被供给到循环容器(D)中,仅循环容器(D)中出现的富甲馏分(5')的液体馏分 完全蒸发,优选在自然循环中,循环容器(D)的顶部产物(7)过热(E1)。

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