Method for cooling a single-component or multi-component stream
    1.
    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

    IPC分类号: F25J1/02 F25J1/00 F25B1/00

    摘要: 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.

    摘要翻译: 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。

    PROCESS FOR SEPARATING OFF NITROGEN
    2.
    发明申请
    PROCESS FOR SEPARATING OFF NITROGEN 审中-公开
    分离氮的方法

    公开(公告)号:US20110041551A1

    公开(公告)日:2011-02-24

    申请号:US12851149

    申请日:2010-08-05

    IPC分类号: F25J3/02

    摘要: The invention relates to a process for separating off C2+-hydrocarbons from a feed fraction containing essentially nitrogen and hydrocarbons, wherein a) the feed fraction (1, 20) is partially condensed (E1, E1′, E3) and separated by rectification (T) into a C2+-hydrocarbon-rich fraction (11) and a C2+-hydrocarbon-depleted fraction (2), b) the C2+-hydrocarbon-depleted fraction (2) is partially condensed (E2) and separated into a liquid fraction which forms at least in part the reflux (3) for the separation by rectification (T), and a C2+-hydrocarbon-depleted gas fraction (4), and c) the C2+-hydrocarbon-depleted gas fraction (4) is separated in a double-column process (N) into a nitrogen-rich fraction (8′) and a methane-rich fraction (7″). According to the invention, the liquid fraction obtained in process step b) is fed (10) at least in part likewise to the double-column process (N) and separated therein into a nitrogen-rich fraction (8′) and a methane-rich fraction (7″).

    摘要翻译: 本发明涉及一种从基本上含有氮和烃的进料馏分中分离C2 +烃的方法,其中a)进料馏分(1,20)部分冷凝(E1,E1',E3)并通过精馏分离(T )加入到C2-富烃馏分(11)和C2-烃 - 贫化馏分(2)中,b)将C2-烃 - 贫化馏分(2)部分冷凝(E2)并分离成液态馏分 至少部分用于通过精馏(T)分离的回流(3)和C2-贫烃气体馏分(4),和c)将C2-烃 - 贫化气体馏分(4)分离成双 (N)加入富氮馏分(8')和富含甲烷的级分(7“)中。 根据本发明,方法步骤b)中获得的液体馏分至少部分地与双塔方法(N)一起进料(10),并将其分离成富氮馏分(8')和甲烷 - 富分数(7“)。