Method for efficient nonsynchronous LNG production
    31.
    发明授权
    Method for efficient nonsynchronous LNG production 有权
    高效非同步LNG生产方法

    公开(公告)号:US07526926B2

    公开(公告)日:2009-05-05

    申请号:US10569785

    申请日:2004-09-20

    摘要: A drive system for a refrigeration compressor such as is used in a natural gas liquefaction plant, allowing the desired compressor speed and maximum turbine efficiency to be maintained throughout varying ambient temperature conditions. A gas turbine is used with an electric starter motor with drive-through capability located on a common drive shaft between the turbine and the compressor. A variable frequency drive (VFD) is connected between the electrical power grid and the electric motor for smooth startups, but also to allow excess turbine mechanical power to be converted to electrical power by the motor operating as a generator, and delivered to the grid at the grid frequency. Pulse width modulation technology may be used to reduce harmonic distortion in the VFD's output. The starter motor also functions as a helper motor when the turbine output is insufficient to drive the compressor at the rotational speed needed to meet throughput requirements.

    摘要翻译: 用于诸如用于天然气液化设备的制冷压缩机的驱动系统,允许在变化的环境温度条件下保持期望的压缩机速度和最大涡轮效率。 燃气轮机与电动起动电动机一起使用,其具有位于涡轮机和压缩机之间的公共驱动轴上的驱动能力。 变频驱动器(VFD)连接在电力电网和电动马达之间以便顺利启动,而且还允许通过作为发电机运行的电动机将多余的涡轮机械功率转换为电力,并将其传送到电网 电网频率。 脉宽调制技术可用于减少VFD输出中的谐波失真。 当涡轮机输出不足以以满足吞吐量要求所需的转速驱动压缩机时,起动马达也用作辅助马达。

    Optimized LNG system with liquid expander
    32.
    发明授权
    Optimized LNG system with liquid expander 有权
    液化膨胀机优化LNG系统

    公开(公告)号:US07415840B2

    公开(公告)日:2008-08-26

    申请号:US11283475

    申请日:2005-11-18

    IPC分类号: F25J1/00

    摘要: A process and apparatus for the liquefaction of natural gas including at least one liquid expander for providing expansion of a high-pressure stream and powering a generator capable of producing electricity to be used to drive a compressor located elsewhere in the liquefaction apparatus. Particularly, a liquid expander is used to expand a high-pressure refrigerant stream and to power an electrical generator. The electricity provided by the generator can be used to power a compressor located in the same or a different refrigeration cycle as the liquid expander.

    摘要翻译: 一种用于液化天然气的方法和装置,包括至少一个液体膨胀器,用于提供高压流的膨胀并为能够产生用于驱动位于液化装置其他地方的压缩机的电力供电。 特别地,使用液体膨胀器来膨胀高压制冷剂流并为发电机供电。 发电机提供的电力可以用于为位于与液体膨胀器相同或不同制冷循环的压缩机提供动力。

    Method for liquefying natural gas with a triple closed circuit of coolant gas
    37.
    发明授权
    Method for liquefying natural gas with a triple closed circuit of coolant gas 有权
    用冷却剂气体的三重闭合电路液化天然气的方法

    公开(公告)号:US09557101B2

    公开(公告)日:2017-01-31

    申请号:US14127910

    申请日:2012-06-22

    IPC分类号: F25J1/00 F25J1/02

    摘要: A process for liquefying natural gas by; a) causing it to flow through three series connected heat exchangers, where gas is cooled to T3; T3 is less/equal to the liquefaction temperature of natural gas at atmospheric pressure; and b) causing the closed circuit circulation of a first stream of refrigerant gas at a pressure P1 lower than P3 entering the third exchanger and leaving the first exchanger, the first stream obtained using a first expander to expand a first portion of a second stream at P3 higher than P2, the second stream flowing relative to the natural gas stream entering the first exchanger and leaving the second exchanger; and a third stream at a pressure P2 higher than P1 and lower than P3 flowing relative to the first stream, entering the second exchanger and leaving the first exchanger; c) the second stream at the pressure P3 obtained by compression.

    摘要翻译: 液化天然气的过程; a)使其流过三个串联的热交换器,其中气体被冷却到T3; T3在大气压下天然气液化温度较低/等于; 以及b)使得第一制冷剂气体流的闭合循环在低于进入第三交换器的P3的压力下离开第一交换器,使用第一膨胀器获得的第一流将第二流的第一部分膨胀 P3高于P2,第二流相对于进入第一交换器并离开第二交换器的天然气流流动; 以及相对于第一流流动的高于P1且低于P3的压力P2的第三流,进入第二交换器并离开第一交换器; c)通过压缩获得的压力P3下的第二流。

    Parallel dynamic compressor arrangement and methods related thereto
    38.
    发明授权
    Parallel dynamic compressor arrangement and methods related thereto 有权
    平行动压缩机布置及其相关方法

    公开(公告)号:US09284964B2

    公开(公告)日:2016-03-15

    申请号:US13643539

    申请日:2011-05-02

    申请人: Omar Angus Sites

    发明人: Omar Angus Sites

    摘要: This disclosure is directed to a novel arrangement for equipment used to compress fluids. A single prime mover is connected to a plurality of compressors. A supply conduit with parallel branch conduits directs fluid to be compressed to at least two compressors and parallel output conduits from each compressor are connected to a common output conduit, which directs compressed fluids to at least one additional compressor.

    摘要翻译: 本公开涉及用于压缩流体的设备的新颖设计。 单个原动机连接到多个压缩机。 具有平行分支导管的供应导管将待压缩的流体引导至至少两个压缩机,并且来自每个压缩机的平行输出导管连接到公共输出管道,该输出导管将压缩流体引导至至少一个额外的压缩机。

    Compression Installation
    40.
    发明申请
    Compression Installation 审中-公开
    压缩安装

    公开(公告)号:US20120324861A1

    公开(公告)日:2012-12-27

    申请号:US12310928

    申请日:2007-09-11

    IPC分类号: F01K23/10

    摘要: A compressor plant with at least one gas turbine having a gas turbine compressor and with a steam turbine is disclosed, wherein a steam generation plant which is assigned to the gas turbine is operated with exhaust gases of the gas turbine, such that the steam generated in the steam generation plant drives the stream turbine. There is assigned at least one additional compressor for compressing a process medium. The compressor is connected directly to the gas turbine and/or the steam turbine such that the assigned compressor is driven in each case directly by the gas turbine and/or the steam turbine.

    摘要翻译: 公开了具有燃气轮机压缩机和汽轮机的至少一个燃气轮机的压缩机设备,其中分配给燃气轮机的蒸汽发生设备用燃气轮机的废气进行操作,使得在 蒸汽发电厂驱动流涡轮机。 分配有至少一个用于压缩处理介质的附加压缩机。 压缩机直接连接到燃气轮机和/或蒸汽涡轮机,使得分配的压缩机在每种情况下由燃气轮机和/或蒸汽涡轮机直接驱动。