Cryogenic liquefying/refrigerating method and system
    1.
    发明授权
    Cryogenic liquefying/refrigerating method and system 有权
    低温液化/制冷方法及系统

    公开(公告)号:US07540171B2

    公开(公告)日:2009-06-02

    申请号:US11748729

    申请日:2007-05-15

    Abstract: Cryogenic liquefying/refrigerating method and system, wherein temperature of gas-to-be-liquefied at the inlet of the compressor for compressing the gas is reduced by cooling the gas discharged from the compressor using a high-efficiency chemical refrigerating machine and vapor compression refrigerating machine before the gas is introduced to a multiple stage heat exchanger thereby reducing power input to the compressor and improving liquefying/refrigerating efficiency. Gas-to-be-liquefied compressed by a compressor is cooled by aftercooler, and further cooled by an adsorption refrigerating machine which utilizes waste heat generated in the compressor and by an ammonia refrigerating machine 40, then the high pressure gas is introduced to a multiple-stage heat exchanger where it is cooled by low pressure low temperature gas separated from a mixture of liquid and gas generated by adiabatically expanding the high pressure gas through an expansion valve 30 and returning to the compressor, and a portion of the high pressure gas is expanded adiabatically by expansion turbines in mid-course of flowing of the high pressure gas through the stages of the heat exchanger to be joined with the low pressure low temperature gas returning to the compressor.

    Abstract translation: 低温液化/制冷方法和系统,其中通过使用高效化学制冷机和蒸气压缩冷冻冷却从压缩机排出的气体来减少用于压缩气体的压缩机入口处的待气化气体的温度 在将气体引入多级热交换器之前,减少输入到压缩机的功率并提高液化/制冷效率。 由压缩机压缩的气体待液化被冷却器冷却,并通过利用在压缩机中产生的废热和氨冷冻机40的吸附式制冷机进一步冷却,然后将高压气体引入多重 其通过由通过膨胀阀30绝热膨胀高压气体并返回压缩机而产生的液体和气体的混合物分离的低压低温气体冷却,并且一部分高压气体是 在高压气体流过热交换器的阶段的中期期间,由膨胀涡轮机进行绝热膨胀,以与返回压缩机的低压低温气体接合。

    CRYOGENIC LIQUEFYING/REFRIGERATING METHOD AND SYSTEM
    3.
    发明申请
    CRYOGENIC LIQUEFYING/REFRIGERATING METHOD AND SYSTEM 有权
    低温液化/制冷方法和系统

    公开(公告)号:US20070251266A1

    公开(公告)日:2007-11-01

    申请号:US11748729

    申请日:2007-05-15

    Abstract: Cryogenic liquefying/refrigerating method and system, wherein temperature of gas-to-be-liquefied at the inlet of the compressor for compressing the gas is reduced by cooling the gas discharged from the compressor using a high-efficiency chemical refrigerating machine and vapor compression refrigerating machine before the gas is introduced to a multiple stage heat exchanger thereby reducing power input to the compressor and improving liquefying/refrigerating efficiency. Gas-to-be-liquefied compressed by a compressor is cooled by aftercooler, and further cooled by an adsorption refrigerating machine which utilizes waste heat generated in the compressor and by an ammonia refrigerating machine 40, then the high pressure gas is introduced to a multiple-stage heat exchanger where it is cooled by low pressure low temperature gas separated from a mixture of liquid and gas generated by adiabatically expanding the high pressure gas through an expansion valve 30 and returning to the compressor, and a portion of the high pressure gas is expanded adiabatically by expansion turbines in mid-course of flowing of the high pressure gas through the stages of the heat exchanger to be joined with the low pressure low temperature gas returning to the compressor.

    Abstract translation: 低温液化/制冷方法和系统,其中通过使用高效化学制冷机和蒸气压缩冷冻冷却从压缩机排出的气体来减少用于压缩气体的压缩机入口处的待气化气体的温度 在将气体引入多级热交换器之前,减少输入到压缩机的功率并提高液化/制冷效率。 由压缩机压缩的气体待液化被冷却器冷却,并通过利用在压缩机中产生的废热和氨冷冻机40的吸附式制冷机进一步冷却,然后将高压气体引入多重 其通过由通过膨胀阀30绝热膨胀高压气体并返回压缩机而产生的液体和气体的混合物分离的低压低温气体冷却,并且一部分高压气体是 在高压气体流过热交换器的阶段的中期期间,由膨胀涡轮机进行绝热膨胀,以与返回压缩机的低压低温气体接合。

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