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    METHOD FOR FLEXIBLE RECOVERY OF ARGON FROM A CRYOGENIC AIR SEPARATION UNIT
    1.
    发明申请
    METHOD FOR FLEXIBLE RECOVERY OF ARGON FROM A CRYOGENIC AIR SEPARATION UNIT 有权

    公开(公告)号：US20220146195A1

    公开(公告)日：2022-05-12

    申请号：US17580830

    申请日：2022-01-21

    申请人： Neil M. Prosser ,  Yang Luo ,  Richard D. Lenz ,  Kevin J. Saboda

    发明人： Neil M. Prosser ,  Yang Luo ,  Richard D. Lenz ,  Kevin J. Saboda

    IPC分类号： F25J3/04

    摘要： A method for flexible production of argon from a cryogenic air separation unit is provided. The disclosed cryogenic air separation unit is capable of operating in a ‘no-argon’ or ‘low-argon’ mode when argon demand is low or non-existent and then switching to operating in a ‘high-argon’ mode when argon is needed. The recovery of the argon products from the air separation unit is adjusted by varying the percentages of dirty shelf nitrogen and clean shelf nitrogen in the reflux stream directed to the lower pressure column. The cryogenic air separation unit and associated method also provides an efficient argon production/rejection process that minimizes the power consumption when the cryogenic air separation unit is operating in a ‘no-argon’ or ‘low-argon’ mode yet maintains the capability to produce higher volumes of argon products at full design capacity to meet argon product demands.

    System and method for flexible recovery of argon from a cryogenic air separation unit
    2.
    发明授权
    System and method for flexible recovery of argon from a cryogenic air separation unit 有权

    公开(公告)号：US11262125B2

    公开(公告)日：2022-03-01

    申请号：US15859979

    申请日：2018-01-02

    申请人： Neil M. Prosser ,  Yang Luo ,  Richard D. Lenz ,  Kevin J. Saboda

    发明人： Neil M. Prosser ,  Yang Luo ,  Richard D. Lenz ,  Kevin J. Saboda

    IPC分类号： F25J3/04

    摘要： A system and method for flexible production of argon from a cryogenic air separation unit is provided. The cryogenic air separation unit is capable of operating in a ‘no-argon’ or ‘low-argon’ mode when argon demand is low or non-existent and then switching to operating in a ‘high-argon’ mode when argon is needed. The recovery of the argon products from the air separation unit is adjusted by varying the percentages of dirty shelf nitrogen and clean shelf nitrogen in the reflux stream directed to the lower pressure column. The cryogenic air separation unit and associated method also provides an efficient argon production/rejection process that minimizes the power consumption when the cryogenic air separation unit is operating in a ‘no-argon’ or ‘low-argon’ mode yet maintains the capability to produce higher volumes of argon products at full design capacity to meet argon product demands.

    SYSTEM AND METHOD FOR FLEXIBLE RECOVERY OF ARGON FROM A CRYOGENIC AIR SEPARATION UNIT
    3.
    发明申请
    SYSTEM AND METHOD FOR FLEXIBLE RECOVERY OF ARGON FROM A CRYOGENIC AIR SEPARATION UNIT 有权

    公开(公告)号：US20220146196A1

    公开(公告)日：2022-05-12

    申请号：US17580860

    申请日：2022-01-21

    申请人： Neil M. Prosser ,  Yang Luo ,  Richard D. Lenz ,  Kevin J. Saboda

    发明人： Neil M. Prosser ,  Yang Luo ,  Richard D. Lenz ,  Kevin J. Saboda

    IPC分类号： F25J3/04

    摘要： A system and method for flexible production of argon from a cryogenic air separation unit is provided. The cryogenic air separation unit is capable of operating in a ‘no-argon’ or ‘low-argon’ mode when argon demand is low or non-existent and then switching to operating in a ‘high-argon’ mode when argon is needed. The recovery of the argon products from the air separation unit is adjusted by varying the percentages of dirty shelf nitrogen and clean shelf nitrogen in the reflux stream directed to the lower pressure column. The cryogenic air separation unit and associated method also provides an efficient argon production/rejection process that minimizes the power consumption when the cryogenic air separation unit is operating in a ‘no-argon’ or ‘low-argon’ mode yet maintains the capability to produce higher volumes of argon products at full design capacity to meet argon product demands.

    Method ad apparatus for argon recovery in a cryogenic air separation unit integrated with a pressure swing adsorption
    5.
    发明授权
    Method ad apparatus for argon recovery in a cryogenic air separation unit integrated with a pressure swing adsorption 有权

    公开(公告)号：US10145609B2

    公开(公告)日：2018-12-04

    申请号：US16009635

    申请日：2018-06-15

    申请人： Neil M. Prosser ,  Yang Luo

    发明人： Neil M. Prosser ,  Yang Luo

    IPC分类号： F25J3/08 ,  F25J3/04 ,  B01D53/047

    摘要： A method and apparatus for argon recovery in which an impure argon stream is separated from air within a cryogenic air separation unit having an argon rejection column and a reflux type argon condenser disposed internally within the lower pressure column. An impure argon stream is subsequently recovered from the argon rejection column and purified within an integrated adsorbent based argon refining and purification subsystem to produce product grade argon. The waste stream from the adsorbent based argon refining and purification subsystem is recycled back to the argon rejection column so as to improve the argon recovery.

    Method and apparatus for argon recovery in a cryogenic air separation unit integrated with a pressure swing adsorption system
    9.
    发明授权
    Method and apparatus for argon recovery in a cryogenic air separation unit integrated with a pressure swing adsorption system 有权

    公开(公告)号：US10024596B2

    公开(公告)日：2018-07-17

    申请号：US15057160

    申请日：2016-03-01

    申请人： Neil M. Prosser ,  Yang Luo

    发明人： Neil M. Prosser ,  Yang Luo

    IPC分类号： F25J3/04 ,  B01D53/047

    摘要： A method and apparatus for argon recovery in which an impure argon stream is separated from air within a cryogenic air separation unit having an argon rejection column and a reflux type argon condenser disposed internally within the lower pressure column. An impure argon stream is subsequently recovered from the argon rejection column and purified within an integrated adsorbent based argon refining and purification subsystem to produce product grade argon. The waste stream from the adsorbent based argon refining and purification subsystem is recycled back to the argon rejection column so as to improve the argon recovery.

    Method and apparatus for argon rejection and recovery
    10.
    发明授权
    Method and apparatus for argon rejection and recovery 有权

    公开(公告)号：US10066871B2

    公开(公告)日：2018-09-04

    申请号：US15057150

    申请日：2016-03-01

    申请人： Neil M. Prosser ,  Yang Luo ,  Kirk F. Larson

    发明人： Neil M. Prosser ,  Yang Luo ,  Kirk F. Larson

    IPC分类号： F25J3/04 ,  B01D53/047

    摘要： A method and apparatus for argon rejection and recovery in which argon is separated from air within a cryogenic air separation plant having a divided wall argon rejection column arrangement and condensed using an argon condenser disposed internally within the lower pressure column. The divided wall argon rejection column arrangement may be an annular arrangement or a side-by-side arrangement (i.e. segmented or planar configuration). The resulting argon stream is subsequently rejected or recovered and optionally purified within an integrated adsorbent based argon refining and purification subsystem to produce product grade argon.