知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

24 条记录 (耗时 0.031 秒)

    SYSTEM AND METHOD FOR RECONDENSING BOIL-OFF GAS FROM A LIQUEFIED NATURAL GAS TANK
    1.
    发明申请
    SYSTEM AND METHOD FOR RECONDENSING BOIL-OFF GAS FROM A LIQUEFIED NATURAL GAS TANK 有权

    公开(公告)号：US20210231366A1

    公开(公告)日：2021-07-29

    申请号：US16750534

    申请日：2020-01-23

    申请人： Air Products and Chemicals, Inc.

    发明人： Mark Julian Roberts ,  Fei Chen

    IPC分类号： F25J1/00 ,  F25J1/02

    摘要： Systems and methods are described for increasing capacity and efficiency of a nitrogen refrigerant boil-off gas recovery system for a natural gas storage tank. Boil-off gas is condensed against two-phase nitrogen in a condensing heat exchanger having an inner vessel through which the boil-off gas flows and an outer vessel through which the two phase nitrogen flows. Logic controls maintain storage tank pressure and power consumption within preferred levels by adjusting the pressure of the two-phase nitrogen in the heat exchanger. Additional logic controls maintain the temperature difference between the nitrogen streams entering into and returning from the cold end of a second heat exchanger by controlling the position of an expansion valve on the return circuit.

    Method of operating natural gas liquefaction facility
    2.
    发明授权
    Method of operating natural gas liquefaction facility 有权

    公开(公告)号：US10393429B2

    公开(公告)日：2019-08-27

    申请号：US15091883

    申请日：2016-04-06

    申请人： Air Products and Chemicals, Inc.

    发明人： Fei Chen ,  Brian Keith Johnston ,  Mark Julian Roberts

    IPC分类号： F25J1/00 ,  F25J1/02

    摘要： A method for controlling the flow of natural gas and refrigerant in the main heat exchanger of a natural gas liquefaction facility. The method provides for the automated control of a flow rate of a natural gas feed stream through a heat exchanger based on one or more process variables and set points. The flow rate of refrigerant streams through the heat exchanger is controlled by different process variables and set points, and is controlled independently of the flow rate of the natural gas feed stream.

    Natural gas liquefaction with integrated nitrogen removal
    8.
    发明授权
    Natural gas liquefaction with integrated nitrogen removal 有权

    公开(公告)号：US11221176B2

    公开(公告)日：2022-01-11

    申请号：US16103479

    申请日：2018-08-14

    申请人： Air Products and Chemicals, Inc.

    发明人： Mark Julian Roberts ,  Fei Chen ,  Christopher Michael Ott ,  Annemarie Ott Weist

    IPC分类号： F25J3/02 ,  F25J1/00

    摘要： A natural gas liquefaction method and system having integrated nitrogen removal. Recycled LNG gas is cooled in a separate and parallel circuit from the natural gas stream in the main heat exchanger. Cooled recycled gas and natural gas streams are directed to a nitrogen rectifier column after the warm bundle. The recycle stream is introduced to the rectifier column above the natural gas stream and at least one separation stage is located in the rectifier column between the recycle stream inlet and the natural gas inlet. The bottom stream from the rectifier column is directed to a cold bundle of the main heat exchanger where it is subcooled.

    Producing LNG from Methane Containing Synthetic Gas
    10.
    发明申请
    Producing LNG from Methane Containing Synthetic Gas 有权

    公开(公告)号：US20230003444A1

    公开(公告)日：2023-01-05

    申请号：US17360031

    申请日：2021-06-28

    申请人： Air Products and Chemicals, Inc.

    发明人： Mark Julian Roberts ,  Fei Chen ,  Russell B. Shnitser

    IPC分类号： F25J3/02

    摘要： Described herein are methods and systems for producing liquefied natural gas (LNG) from a methane-containing synthetic gas (MCSG). An MCSG feed stream may be cooled and partially liquefied using one or more heat exchanger units. A first phase separator and a second phase separator in downstream fluid flow communication with the first phase separator may be used to separate the partially liquefied MCSG stream into a first residue gas stream and first and second feed streams, the first and second feed streams then being fed into a distillation column to produce an LNG stream and a second residue gas stream.