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    Flexible NGL recovery methods and configurations
    34.
    发明授权
    Flexible NGL recovery methods and configurations 有权
    灵活的NGL恢复方法和配置

    公开(公告)号：US09423175B2

    公开(公告)日：2016-08-23

    申请号：US14210061

    申请日：2014-03-13

    Applicant: FLUOR TECHNOLOGIES CORPORATION

    Inventor： John Mak

    IPC: F25J3/00 ,  F25J3/02

    CPC classification number: F25J3/0209 ,  F25J3/0233 ,  F25J3/0238 ,  F25J3/0242 ,  F25J2200/02 ,  F25J2200/04 ,  F25J2200/70 ,  F25J2200/72 ,  F25J2200/74 ,  F25J2200/76 ,  F25J2200/94 ,  F25J2205/04 ,  F25J2215/02 ,  F25J2215/60 ,  F25J2215/62 ,  F25J2230/60 ,  F25J2240/02 ,  F25J2245/02 ,  F25J2270/90 ,  F25J2280/02 ,  F25J2290/40

    Abstract: A natural gas liquids plant uses a demethanizer and a deethanizer in a two-column or single column configuration that can be used for ethane recovery and ethane rejection. During ethane recovery, 95% ethane recovery and 99% propane recovery are achieved, while during ethane rejection the sales gas Wobbe Index requirement is maintained while maintaining 95% propane recovery. A residue gas recycle exchanger is most preferably configured to use the demethanizer overhead product to either cool a portion of the residue gas and a portion of the feed gas during ethane recovery, or to cool a portion of the feed gas using two distinct heat transfer areas to produce a feed gas reflux at significantly lower temperature.

    Abstract translation: 天然气液化设备采用双塔或单柱配置的脱甲烷塔和脱乙烷塔，可用于乙烷回收和乙烷排放。 在乙烷回收期间，实现了95％的乙烷回收率和99％的丙烷回收率，而乙烷排放期间维持销售瓦斯指数的要求，同时维持95％的丙烷回收率。 残余气体循环交换器最优选构造成使用脱甲烷塔顶产物在乙烷回收过程中冷却一部分残余气体和一部分进料气体，或者使用两个不同的传热区域冷却一部分进料气体 以在显着较低的温度下产生进料气体回流。

    Ethane Recovery Methods And Configurations
    35.
    发明申请
    Ethane Recovery Methods And Configurations 有权
    乙烷回收方法和配置

    公开(公告)号：US20160187058A1

    公开(公告)日：2016-06-30

    申请号：US14984603

    申请日：2015-12-30

    Applicant: Fluor Technologies Corporation

    Inventor： John Mak

    IPC: F25J3/02

    CPC classification number: F25J3/0238 ,  F25J3/0209 ,  F25J3/0233 ,  F25J3/0242 ,  F25J2200/02 ,  F25J2200/04 ,  F25J2200/50 ,  F25J2200/70 ,  F25J2200/72 ,  F25J2205/04 ,  F25J2215/02 ,  F25J2215/60 ,  F25J2215/62 ,  F25J2220/66 ,  F25J2240/02 ,  F25J2245/02 ,  F25J2270/12 ,  F25J2270/60

    Abstract: Contemplated methods and configurations use a cooled ethane and CO2-containing feed gas that is expanded in a first turbo-expander and subsequently heat-exchanged to allow for relatively high expander inlet temperatures to a second turbo expander. consequently, the relatively warm demethanizer feed from the second expander effectively removes CO2 from the ethane product and prevents carbon dioxide freezing in the demethanizer, while another portion of the heat-exchanged and expanded feed gas is further chilled and reduced in pressure to form a lean reflux for high ethane recovery.

    Abstract translation: 考虑的方法和构造使用冷却的乙烷和含CO 2的进料气体，其在第一涡轮膨胀机中膨胀并随后进行热交换以允许相对较高的膨胀器进口温度到第二涡轮膨胀机。 因此，来自第二膨胀机的相对温暖的脱甲烷塔进料有效地从乙烷产物中除去CO 2并防止脱甲烷塔中的二氧化碳冷冻，而另一部分热交换和膨胀的进料气体进一步冷却并减压以形成稀 乙烷回收率高回升。

    Integrated heavy hydrocarbon and BTEX removal in LNG liquefaction for lean gases
    36.
    发明授权
    Integrated heavy hydrocarbon and BTEX removal in LNG liquefaction for lean gases 有权

    公开(公告)号：US12215922B2

    公开(公告)日：2025-02-04

    申请号：US16421138

    申请日：2019-05-23

    Applicant: Fluor Technologies Corporation

    Inventor： John Mak ,  Jacob Thomas ,  Dhirav Patel ,  Curt Graham ,  Irene Zhang

    IPC: F25J3/00 ,  F25J3/02

    Abstract: A method for removing heavy hydrocarbons from a feed gas by: feeding, into an absorber, a top reflux stream and a second reflux stream below the top reflux stream, wherein the absorber produces an absorber bottom product stream and an absorber overhead product stream; depressurizing and feeding the absorber bottom product stream to a stripper to produce a stripper bottom product stream and a stripper overhead product stream; cooling and feeding a portion of the absorber overhead product stream back to the absorber as the top reflux stream; and pressurizing and feeding the stripper overhead product stream back to the absorber as the second reflux stream. Systems for carrying out the method are also provided.

    Systems and methods for LNG production with propane and ethane recovery
    37.
    发明授权
    Systems and methods for LNG production with propane and ethane recovery 有权

    公开(公告)号：US11365933B2

    公开(公告)日：2022-06-21

    申请号：US16390687

    申请日：2019-04-22

    Applicant: Fluor Technologies Corporation

    Inventor： John Mak ,  Jacob Thomas ,  Curt Graham

    IPC: F25J3/02 ,  F25J1/02 ,  F25J1/00

    Abstract: A LNG liquefaction plant includes a propane recovery unit including an inlet for a feed gas, a first outlet for a LPG, and a second outlet for an ethane-rich feed gas, an ethane recovery unit including an inlet coupled to the second outlet for the ethane-rich feed gas, a first outlet for an ethane liquid, and a second outlet for a methane-rich feed gas, and a LNG liquefaction unit including an inlet coupled to the second outlet for the methane-rich feed gas, a refrigerant to cool the methane-rich feed gas, and an outlet for a LNG. The LNG plant may also include a stripper, an absorber, and a separator configured to separate the feed gas into a stripper liquid and an absorber vapor. The stripper liquid can be converted to an overhead stream used as a reflux stream to the absorber.

    LNG boiloff gas recondensation configurations and methods
    38.
    发明授权
    LNG boiloff gas recondensation configurations and methods 有权

    公开(公告)号：US10704736B2

    公开(公告)日：2020-07-07

    申请号：US15895317

    申请日：2018-02-13

    Applicant: Fluor Technologies Corporation

    Inventor： John Mak

    IPC: F17C9/02 ,  F17C9/04 ,  F25J1/00

    Abstract: Systems and methods for optimizing the recondensation of boiloff gas in liquid natural gas storage tanks are presented. In especially preferred aspects of the inventive subject matter, BOG from a storage tank is condensed using refrigeration content of a portion of LNG sendout in a direct or indirect manner, and the BOG condensate and LNG sendout portion are combined to form a subcooled stream that is then combined with the balance of the LNG sendout, to be fed to a high pressure pump. Contemplated recondensation operations advantageously occur without using otherwise needed large volume recondensers. Moreover, the condensing and subcooling operations are decoupled from the LNG sendout rate.

    Methods and configurations for LNG liquefaction
    39.
    发明授权
    Methods and configurations for LNG liquefaction 有权

    公开(公告)号：US10605522B2

    公开(公告)日：2020-03-31

    申请号：US15693767

    申请日：2017-09-01

    Applicant: Fluor Technologies Corporation

    Inventor： John Mak ,  Jacob Thomas ,  Dhirav Patel ,  Steven Borsos

    IPC: F25J1/02 ,  F25J1/00

    Abstract: Embodiments relate generally to systems and methods for pre-cooling a natural gas stream to a liquefaction plant. A system may comprise a compressor configured to receive a first natural gas stream at a first pressure and produce a second natural gas stream at a second pressure; an exchanger, wherein the exchanger is configured to receive the second natural gas stream as the second pressure and cool the second natural gas stream to produce a cooled natural gas stream; and an expander, wherein the expander is configured to receive the cooled natural gas stream and expand the cooled natural gas stream from the second pressure to a third pressure.

    Configurations and methods of flexible CO2 removal
    40.
    发明授权
    Configurations and methods of flexible CO2 removal 有权

    公开(公告)号：US10150926B2

    公开(公告)日：2018-12-11

    申请号：US15901585

    申请日：2018-02-21

    Applicant: Fluor Technologies Corporation

    Inventor： John Mak

    IPC: B01D53/14 ,  B01D53/18 ,  C10L10/04 ,  C10L3/10

    Abstract: A plant comprises a feed gas source, H2S removal unit, first absorber and a second, pressure reduction stages, first and second heat exchangers, stripping unit, and a conduit. The H2S removal unit selectively removes H2S from a feed gas from the feed gas source to produce an H2S depleted feed gas. The first absorber and the second absorber remove CO2 from the H2S depleted feed gas using a semi-lean and an ultralean solvent to produce a product gas and a rich solvent. The plurality of pressure reduction stages generates a cooled flashed solvent. The first heat exchanger and the second heat exchanger use the cooled flashed solvent to cool the H2S depleted feed gas and the semi-lean solvent. The stripping unit strips the flashed solvent with dried air to produce the ultralean solvent, and the conduit combines a portion of the ultralean solvent with the H2S depleted feed gas.

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