Method of conditioning natural gas in preparation for storage
    35.
    发明授权
    Method of conditioning natural gas in preparation for storage 有权
    调节天然气准备储存的方法

    公开(公告)号:US08555671B2

    公开(公告)日:2013-10-15

    申请号:US12162988

    申请日:2007-01-31

    IPC分类号: F25J1/00

    摘要: A method of conditioning natural gas in preparation for storage, involves taking an existing stream of continuously flowing natural gas flowing through a gas line (12) on its way to end users and diverting a portion of the stream of continuously flowing natural gas to a storage facility through a storage diversion line (22). The pressure of the natural gas is lowered, as is the temperature by the Joule-Thompson effect. The natural gas is passed in a single pass through a series of heat exchangers (18, 28,30, 32) prior to resuming flow through the gas line (12) at the lowered pressure. The diverted natural gas is liquefied in preparation for storage by effecting a heat exchange with the natural gas.

    摘要翻译: 调节天然气准备储存的方法包括在流向终端用户的道路上流动通过气体管线(12)的连续流动的天然气流,并将一部分连续流动的天然气流转向储存器 设备通过存储分流线(22)。 天然气的压力也随着焦耳汤普森效应的降低而降低。 天然气在通过一系列热交换器(18,28,30,32)之前通过,然后在降低的压力下恢复流经气体管线(12)。 通过与天然气进行热交换,转移的天然气被液化以准备储存。

    NGL RECOVERY FROM NATURAL GAS USING A MIXED REFRIGERANT
    36.
    发明申请
    NGL RECOVERY FROM NATURAL GAS USING A MIXED REFRIGERANT 审中-公开
    使用混合制冷剂从天然气中恢复NGL

    公开(公告)号:US20130213087A1

    公开(公告)日:2013-08-22

    申请号:US13402349

    申请日:2012-02-22

    申请人: Kevin L. Currence

    发明人: Kevin L. Currence

    IPC分类号: F25J3/00

    摘要: An NGL recovery facility for separating ethane and heavier (C2+) components from a hydrocarbon-containing feed gas stream that utilizes a single, closed-loop mixed refrigerant cycle. The vapor and liquid portions of the feed gas stream are isenthalpically flashed and the resulting expanded streams are introduced into the NGL recovery column. Optionally, a second vapor stream can be flashed and then introduced into the recovery column at the same or lower separation stage than the flashed liquid stream. As a result, the NGL recovery facility can optimize C2+ recovery with compression costs.

    摘要翻译: 用于从使用单个闭环混合制冷剂循环的含烃进料气流中分离乙烷和较重(C2 +)组分的NGL回收设备。 进料气流的蒸汽和液体部分被喷射闪蒸,并将所得的膨胀流引入到NGL回收塔中。 任选地,可以闪蒸第二蒸气流,然后在与闪蒸的液体流相同或更低的分离阶段引入回收塔。 因此,NGL恢复设施可以通过压缩成本优化C2 +恢复。

    LIQUEFIED NATURAL GAS AND HYDROCARBON GAS PROCESSING
    37.
    发明申请
    LIQUEFIED NATURAL GAS AND HYDROCARBON GAS PROCESSING 有权
    液化天然气和油气加工

    公开(公告)号:US20130125582A1

    公开(公告)日:2013-05-23

    申请号:US13686641

    申请日:2012-11-27

    IPC分类号: F25J3/02

    摘要: A process for recovering ethane and heavier hydrocarbons from LNG and a hydrocarbon gas stream is disclosed. The LNG feed stream is divided into two portions. The first is supplied to a fractionation column as a first upper mid-column feed. The second portion is heated while condensing a portion of a column distillation stream, thereby producing a “lean” LNG stream and a reflux stream. The reflux stream is supplied as top column feed. The second portion of LNG feed is heated further and supplied to the column as a first lower mid-column feed. The gas stream is divided into two portions. The second is expanded, then both portions are cooled while vaporizing the lean LNG stream and heating another portion of the distillation stream. The colder first portion is supplied to the column as a second upper mid-column feed, and the second is supplied as a second lower mid-column feed.

    摘要翻译: 公开了一种从LNG和烃气流中回收乙烷和重烃的方法。 LNG进料流分为两部分。 第一个作为第一个上部中间列进料供应到分馏塔。 加热第二部分,同时冷凝一部分塔蒸馏物流,从而产生“贫”LNG流和回流流。 作为顶部塔进料提供回流。 LNG进料的第二部分被进一步加热并作为第一较低的中间柱进料供应到塔中。 气流被分成两部分。 第二个膨胀,然后冷却两部分,同时蒸发贫LNG流并加热另一部分蒸馏流。 较冷的第一部分作为第二上部中间柱进料供给到塔中,而第二部分作为第二较低的中间柱进料供应。

    PROCESS AND APPARATUS FOR SEPARATION OF HYDROCARBONS AND NITROGEN
    40.
    发明申请
    PROCESS AND APPARATUS FOR SEPARATION OF HYDROCARBONS AND NITROGEN 审中-公开
    用于分离碳氢化合物和氮的方法和装置

    公开(公告)号:US20120090355A1

    公开(公告)日:2012-04-19

    申请号:US13259355

    申请日:2010-03-23

    IPC分类号: F25J3/06

    摘要: The invention provides a process and apparatus for the separation of nitrogen from a gaseous feed comprising a mixture of hydrocarbons and nitrogen gas, the process comprising the steps of: (i) cooling and at least partially condensing the gaseous feed; (ii) feeding the cooled and at least partially condensed feed from step (i) to a first fractionation to produce an overhead vapour stream having an enriched nitrogen content and a condensed product having a reduced nitrogen content which is subjected to a second fractionation, which comprises reboil, at a lower pressure than the first fractionation; (iii) partially condensing the overhead vapour stream, and separating to provide a liquid stream, which is used to provide reflux to the first fractionation, and a separated vapour stream, which is condensed to provide reflux to the second fractionation; and (iv) sub-cooling the condensed product of the first fractionation and dividing the resulting sub-cooled product into at least two streams: a first stream being expanded and fed to the second fractionation, and a second stream being expanded and reheated in heat exchange with the separated vapour stream from step (ii) before being fed to the second fractionation; (v) removing a hydrocarbon product stream low in nitrogen from the second fractionation; and (vi) removing a nitrogen rich stream from the second fractionation.

    摘要翻译: 本发明提供了一种用于从包含烃和氮气的混合物的气态进料分离氮气的方法和装置,该方法包括以下步骤:(i)冷却并至少部分地冷凝气态进料; (ii)将来自步骤(i)的冷却和至少部分冷凝的进料进料至第一分馏以产生具有富氮含量的塔顶蒸气料流和具有降低的氮含量的冷凝产物,其进行第二次分馏, 包括在比第一分馏更低的压力下再沸腾; (iii)部分冷凝顶部蒸汽流,并分离以提供用于向第一分馏提供回流的液体流,以及分离的蒸气流,其被冷凝以提供回流至第二分馏; 和(iv)次冷却第一分馏的冷凝产物并将所得的副冷却产物分成至少两股:第一流被膨胀并进料至第二分馏,第二料流在热量下膨胀和再加热 在进料到第二分馏之前与来自步骤(ii)的分离的蒸气物流交换; (v)从第二分馏中除去低氮的烃产物流; 和(vi)从第二分馏中除去富氮物流。