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    • 26. 发明授权
    • Ethane plus and HHH process for NGL recovery
    • 用于NGL回收的乙烷加和HHH过程
    • US07219513B1
    • 2007-05-22
    • US10977891
    • 2004-11-01
    • Hussein Mohamed Ismail Mostafa
    • Hussein Mohamed Ismail Mostafa
    • F25J3/00
    • F25J3/0209F25J3/0233F25J3/0238F25J3/0242F25J2200/02F25J2200/04F25J2200/50F25J2200/70F25J2200/74F25J2200/76F25J2200/78F25J2205/04F25J2210/06F25J2230/08F25J2230/20F25J2230/60F25J2235/60F25J2240/02
    • The present invention relates to methods for separating and recovering ethane, propane and heavier components from a feed gas, e.g. raw natural gas or a refinery or petroleum plant gas stream or a petrochemical plant gas stream. These methods employ a common new concept which is the use of the turbo-expander shaft compressor to generate the reflux requirement for the cryogenic absorber or distillation columns. The power of the turbo-expander which is absorbed by the shaft compressor is always high enough so that reflux generation by a specific gas compression through the expander shaft compressor and subsequent cooling, condensation and sub-cooling can always be easily maintained. The present invention allows for higher cryogenic absorber pressure and a lower demethanizer/de-ethanizer column pressure thus eliminating the common cryogenic pump at absorber bottom. The present invention ultimately results in a lower residue compression and utilities consumption. The present invention as such allows for a higher 99+% recovery of NGL from the feed gas stream.
    • 本发明涉及从进料气体中分离和回收乙烷,丙烷和较重组分的方法, 原始天然气或炼油或石油工厂气流或石油化工厂气流。 这些方法采用通用的新概念,即使用涡轮膨胀机轴压缩机来产生低温吸收塔或蒸馏塔的回流要求。 由轴压缩机吸收的涡轮膨胀机的功率总是足够高的,使得通过膨胀机轴压缩机的特定气体压缩的回流产生以及随后的冷却,冷凝和次冷却总是容易地保持。 本发明允许更高的低温吸收剂压力和较低的脱甲烷塔/脱乙烷塔压力,从而消除了在吸收器底部的普通低温泵。 本发明最终导致较低的残余物压缩和水电耗。 如此本发明允许从原料气流中更高的99%的NGL回收率。