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138 条记录 (耗时 0.017 秒)

    Method and apparatus for removing nitrogen from a cryogenic hydrocarbon composition
    97.
    发明公开
    Method and apparatus for removing nitrogen from a cryogenic hydrocarbon composition 审中-公开
    用于从低温烃组合物中除去氮的方法和装置

    公开(公告)号：EP2597406A1

    公开(公告)日：2013-05-29

    申请号：EP11190671.5

    申请日：2011-11-25

    申请人： Shell Internationale Research Maatschappij B.V.

    发明人： Hartenhof, Micha ,  Santos, Alexandre M.C.R.

    IPC分类号： F25J1/00 ,  F25J1/02

    CPC分类号： F25J1/0022 ,  F25J1/004 ,  F25J1/0042 ,  F25J1/0052 ,  F25J1/0055 ,  F25J1/0219 ,  F25J1/023 ,  F25J1/0237 ,  F25J1/0254 ,  F25J1/0265 ,  F25J1/0284 ,  F25J1/0292 ,  F25J2220/62 ,  F25J2245/90

    摘要： Nitrogen is removed from a cryogenic hydrocarbon composition (8) comprising nitrogen and a methane-containing liquid phase. A by-product vapour (60) from the cryogenic hydrocarbon composition, at a low pressure of between 1 and 2 bar absolute, is compressed (260) to a separation pressure in the range of between 2 and 15 bar absolute. The such compressed vapour is partially liquefied by heat exchanging (235) the compressed vapour (70) against an auxiliary refrigerant stream (142,132) and thereby passing heat from the compressed vapour to the auxiliary refrigerant stream at a cooling duty. The condensed fraction (40) of the partially liquefied compressed vapour is depressurized (45) and at least a portion of it is reinjected into the cryogenic hydrocarbon composition (8). An off gas (80) consisting of a, non condensed, vapour fraction of the partially liquefied compressed vapour is discharged from the first gas/liquid separator (33). The cooling duty is adjusted (34) to regulate a heating value of the vapour fraction (80) being discharged.

    摘要翻译： 氮气从低温烃组合物（8）包括氮气和含甲烷的液相除去。 副产品蒸汽（60）从低温烃组合物，在绝对1和2巴之间的低压，被压缩（260）到分离压力在2和15之间巴绝对的范围内。 搜索压缩后的蒸气的一部分由热交换（235）压缩的不受水蒸气（70），以辅助制冷剂流（142.132），从而使热量从所述压缩蒸气的辅助制冷剂流在冷却负荷液化。 部分液化压缩蒸汽的冷凝馏分（40）被减压（45）和至少它的一部分被再注入低温烃组合物（8）。 由以下组成的一个废气（80），非冷凝，该部分液化的压缩蒸气的蒸气馏分从第一气/液分离器（33）排出。 冷却负荷进行调整（34）以调节蒸气馏分（80）被排出的热值。

    METHOD AND APPARATUS FOR LIQUEFYING A HYDROCARBON STREAM
    99.
    发明公开
    METHOD AND APPARATUS FOR LIQUEFYING A HYDROCARBON STREAM 审中-公开
    方法和设备液化烃STREAM

    公开(公告)号：EP2422151A2

    公开(公告)日：2012-02-29

    申请号：EP09729348.4

    申请日：2009-04-07

    申请人： Shell Internationale Research Maatschappij B.V.

    发明人： TEO, Chee Seng

    IPC分类号： F25J1/00

    CPC分类号： F25J1/0295 ,  F25J1/0022 ,  F25J1/0035 ,  F25J1/0042 ,  F25J1/0052 ,  F25J1/0055 ,  F25J1/0057 ,  F25J1/021 ,  F25J1/0214 ,  F25J1/0216 ,  F25J1/0219 ,  F25J1/023 ,  F25J2210/04 ,  F25J2220/62 ,  F25J2220/64 ,  F25J2230/08 ,  F25J2230/20 ,  F25J2230/30 ,  F25J2230/60 ,  F25J2245/02

    摘要： Method and apparatus for liquefying a hydrocarbon stream. A liquefaction system comprises at least an NGL recovery system 12, a main refrigerant circuit 42 and a first refrigerant circuit 100, a pressure reduction device 52 followed by an end gas/liquid separator 62. The main refrigerant circuit 42 comprises at least one or more main refrigerant compressors 45, 45a, 45b, and the first refrigerant circuit comprises one or more first refrigerant compressors 101. A hydrocarbon feed stream 10 is passed through the NGL recovery system 12 to produce a methane-enriched overhead stream 20, which is subsequently cooled and liquefied by the first and second refrigerant circuits. The pressure of the liquefied stream is reduced and the resulting mixed-phase stream 60 is passed through the end gas/liquid separator 62 to provide an end gaseous stream 70 and a liquefied hydrocarbon product stream 80. The loading power of the one or more main refrigerant compressors and the one or more first refrigerant compressors is maximized to their maximum load by adjusting temperature of the liquefied stream to change the amount of end gaseous stream and by controlling an amount of the end gaseous stream being fed into the methane-enriched overhead stream 20 in a recycle stream 90b.