Method for recovery of natural gas liquids for liquefied natural gas
    112.
    发明申请
    Method for recovery of natural gas liquids for liquefied natural gas 审中-公开
    液化天然气天然气液体回收方法

    公开(公告)号:US20060130520A1

    公开(公告)日:2006-06-22

    申请号:US11300742

    申请日:2005-12-15

    申请人: Sanjiv Patel

    发明人: Sanjiv Patel

    IPC分类号: F25J3/00

    摘要: The invention includes a process and apparatus for separating a liquefied natural gas (LNG) stream containing methane and lighter components and heavy hydrocarbon components into a more volatile gas fraction containing a substantial amount of the methane and lighter components and a less volatile fraction containing a large portion of the heavy hydrocarbon components. The process includes splitting the LNG stream into two feed streams, preheating the resulting first feed stream and providing the feed stream to a fractionation tower at two locations.

    摘要翻译: 本发明包括一种用于将含有甲烷和较轻组分和重质烃组分的液化天然气(LNG)流分离成含有大量甲烷和较轻组分的更易挥发的气体馏分和含有大量甲烷 部分重质烃组分。 该方法包括将LNG流分成两个进料流,预热所得到的第一进料流,并将进料流提供到两个位置处的分馏塔。

    Configurations and methods for improved NGL recovery
    113.
    发明授权
    Configurations and methods for improved NGL recovery 有权
    改善NGL恢复的配置和方法

    公开(公告)号:US07051552B2

    公开(公告)日:2006-05-30

    申请号:US10478349

    申请日:2002-11-07

    申请人: John Mak

    发明人: John Mak

    IPC分类号: F25J3/00

    摘要: Feed gas (1) in an improved NGL processing plant is cooled below ambient temperature and above hydrate point of the feed gas to condense heavy components (6) and a significant portion of water (4) contained in the feed gas. The water (4) is removed in a feed gas separator (101) and the condensed liquids are fed into an integrated refluxed stripper (104) that operates as a drier/demethanizer for the condensed liquids, and the uncondensed portion (5) containing light components is further dried (106) and cooled prior to turboexpansion (23) and demethanization (112). Consequently, processing of heavy components in the cold section is eliminated, and feed gas with a wide range of compositions can be efficiently processed for high NGL recovery at substantially the same operating conditions and optimum expander efficiency.

    摘要翻译: 改进的NGL加工厂中的进料气(1)被冷却到低于环境温度并且高于进料气体的水合物点,以冷凝进料气体中包含的重组分(6)和大部分水(4)。 在进料气体分离器(101)中除去水(4),并将冷凝的液体进料到用于冷凝液体的干燥/脱甲烷塔操作的集成回流式汽提器(104)中,并且含有光的未冷凝部分(5) 在涡轮膨胀(23)和脱甲烷化(112)之前,将组分进一步干燥(106)并冷却。 因此,消除了冷部分中重组分的处理,并且可以在基本上相同的操作条件和最佳的膨胀器效率下,有效地处理具有宽范围组成的进料气体用于高NGL回收。

    Low pressure ngl plant cofigurations
    117.
    发明申请
    Low pressure ngl plant cofigurations 有权
    低压ngl植物配置

    公开(公告)号:US20050255012A1

    公开(公告)日:2005-11-17

    申请号:US10528435

    申请日:2002-08-15

    申请人: John Mak

    发明人: John Mak

    摘要: A natural gas liquid plant includes a separator (103) that receives a cooled low pressure feed gas (4), wherein the separator (103) is coupled to an absorber (108) and a demethanizer (110). Refrigeration duty of the absorber (108) and demethanizer (110) are provided at least in part by expansion of a liquid portion of the cooled low pressure feed gas (4) and an expansion of a liquid absorber bottom product (19), wherein ethane recovery is at least 85 mol % and propane recovery is at least 99 mol %. Contemplated configurations are especially advantageous as upgrades to existing plants with low pressure feed gas where high ethane recovery is desirable.

    摘要翻译: 天然气液体设备包括接收冷却的低压进料气体(4)的分离器(103),其中分离器(103)联接到吸收器(108)和脱甲烷塔(110)。 至少部分地通过冷却的低压进料气体(4)的液体部分的膨胀和液体吸收器底部产物(19)的膨胀来提供吸收器(108)和脱甲烷塔(110)的制冷负荷,其中乙烷 回收率至少为85mol%,丙烷回收率至少为99mol%。 考虑到的配置特别有利于升级到具有低乙烷回收率的低压进料气体的现有设备。

    Optimized heating value in natural gas liquids recovery scheme
    118.
    发明授权
    Optimized heating value in natural gas liquids recovery scheme 有权
    天然气液体回收方案优化发热值

    公开(公告)号:US06964181B1

    公开(公告)日:2005-11-15

    申请号:US10651178

    申请日:2003-08-28

    IPC分类号: F25J1/00 F25J3/00 F25J3/02

    摘要: A process and apparatus for controlling or reducing the heating value or BTU content of NGL recovered from LNG streams. LNG pipelines have a maximum allowable heating value that LNG must be within prior to entering the pipeline. If the LNG heating value is too high, the components contributing to the high heating value must be removed prior to being introduced in the pipeline. The process controls the heating value of the residue LNG gas stream by splitting a feed stream and warming at least a portion of the feed stream. Substantial differences in enthalpy content and temperature between the two portions of the feed stream exist prior to being sent to a fractionation tower.

    摘要翻译: 用于控制或降低从LNG流回收的NGL的热值或BTU含量的方法和装置。 LNG管道具有LNG进入管道之前必须在其中的最大允许热值。 如果LNG热值太高,则在引入管道之前必须去除有助于高发热值的部件。 该方法通过分离进料流并加热至少一部分进料流来控制残余LNG气流的热值。 进料流的两部分之间的焓含量和温度之间的明显差异在送入分馏塔之前就存在。

    Hydrocarbon recovery process utilizing enhanced reflux streams
    119.
    发明申请
    Hydrocarbon recovery process utilizing enhanced reflux streams 有权
    使用增强回流的烃回收过程

    公开(公告)号:US20050204774A1

    公开(公告)日:2005-09-22

    申请号:US10803490

    申请日:2004-03-18

    IPC分类号: F25J3/02 F25J3/00

    摘要: A process and apparatus for the recovery of ethane and heavier components from a hydrocarbon feed gas stream. Feed gas stream is cooled and separated into a vapor stream and a condensed stream. Vapor stream is divided into a first and a second gas streams. First gas stream is expanded and sent to a fractionation tower. Second gas stream is supplied to an absorber tower. At least a part of the first liquid stream is cooled and sent to the absorber. Absorber column produces a lean vapor stream and a second condensed stream. Lean vapor stream is cooled and sent to the fractionation tower. Second condensed stream is subcooled and supplied to the fractionation tower. Temperatures and pressures of the streams and columns are maintained to recover a major portion of ethane and heavier hydrocarbon components as bottom product, and produce at the fractionation tower overhead, a residue gas stream.

    摘要翻译: 一种用于从烃进料气流中回收乙烷和较重组分的方法和装置。 进料气流被冷却并分离成蒸气流和冷凝流。 蒸汽流被分成第一和第二气流。 将第一气流膨胀并送入分馏塔。 第二气流被供应到吸收塔。 将第一液体流的至少一部分冷却并送至吸收器。 吸收塔产生贫蒸汽流和第二冷凝流。 将精蒸汽流冷却并送至分馏塔。 将第二冷凝物流过冷并送入分馏塔。 保持流和塔的温度和压力以回收大部分乙烷和较重的烃组分作为底部产物,并在分馏塔顶部产生残余气流。