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8 条记录 (耗时 0.027 秒)

    Biogas upgrading apparatus and process
    1.
    发明授权
    Biogas upgrading apparatus and process 有权

    公开(公告)号：US11998872B2

    公开(公告)日：2024-06-04

    申请号：US17498890

    申请日：2021-10-12

    申请人： Air Products and Chemicals, Inc.

    发明人： Donald E. Henry

    IPC分类号： B01D53/22 ,  C10L3/10 ,  C12M1/00

    CPC分类号： B01D53/226 ,  B01D53/227 ,  C10L3/104 ,  C12M47/18 ,  B01D2256/245 ,  B01D2257/504 ,  B01D2258/05

    摘要： A biogas upgrading system can include a multiple stage membrane system that is configured to remove oxygen so that the biogas is upgraded to have a higher concentration of methane, a pre-selected oxygen (O2) concentration (e.g. less than or equal to 0.2 mol %, etc.), and a pre-selected carbon dioxide (CO2) concentration (e.g. less than or equal to 5 mol %, etc.). The membrane system can be configured to reject O2 by utilizing a low CO2/O2 selectivity that is within a pre-determined range (e.g. less than 5 or less than 4.5). In some embodiments, the upgraded biogas that is output from the system can be entirely made up of methane, carbon dioxide, and oxygen. In other embodiments, the biogas can be almost entirely composed of these components along with a small amount of nitrogen and a trace amount (e.g. less than or equal to 0.2%-0.1%, etc.) of other components.

    BIOGAS UPGRADING APPARATUS AND PROCESS
    4.
    发明申请
    BIOGAS UPGRADING APPARATUS AND PROCESS 有权

    公开(公告)号：US20230114525A1

    公开(公告)日：2023-04-13

    申请号：US17498890

    申请日：2021-10-12

    申请人： Air Products and Chemicals, Inc.

    发明人： Donald E. Henry

    IPC分类号： B01D53/22 ,  C10L3/10 ,  C12M1/00

    摘要： A biogas upgrading system can include a multiple stage membrane system that is configured to remove oxygen so that the biogas is upgraded to have a higher concentration of methane, a pre-selected oxygen (O2) concentration (e.g. less than or equal to 0.2 mol %, etc.), and a pre-selected carbon dioxide (CO2) concentration (e.g. less than or equal to 5 mol %, etc.). The membrane system can be configured to reject O2 by utilizing a low CO2/O2 selectivity that is within a pre-determined range (e.g. less than 5 or less than 4.5). In some embodiments, the upgraded biogas that is output from the system can be entirely made up of methane, carbon dioxide, and oxygen. In other embodiments, the biogas can be almost entirely composed of these components along with a small amount of nitrogen and a trace amount (e.g. less than or equal to 0.2%-0.1%, etc.) of other components.

    Membrane process and system for high recovery of a nonpermeating gas
    5.
    发明授权
    Membrane process and system for high recovery of a nonpermeating gas 有权

    公开(公告)号：US11285434B2

    公开(公告)日：2022-03-29

    申请号：US16834270

    申请日：2020-03-30

    申请人： Air Products and Chemicals, Inc.

    发明人： Donald E. Henry

    IPC分类号： B01D53/22 ,  C10L3/10 ,  C07C7/00 ,  C07C7/144

    摘要： A method for separating a raw feed gas stream using a plurality of membrane separation stages includes separating a pressurized feed gas stream into a first nonpermeate stream and a first permeate stream, compressing the first permeate stream to form a compressed first permeate stream, separating the compressed first permeate stream into a second nonpermeate stream and a second permeate stream, separating the second permeate stream into a third nonpermeate stream and a third permeate stream, combining the third nonpermeate stream with a raw feed gas stream to form a combined feed stream, compressing the combined feed stream to form a compressed combined feed stream, and combining the second nonpermeate stream with the compressed combined feed stream to form the pressurized feed gas stream.

    MEMBRANE PROCESS AND SYSTEM FOR HIGH RECOVERY OF A NONPERMEATING GAS
    6.
    发明申请
    MEMBRANE PROCESS AND SYSTEM FOR HIGH RECOVERY OF A NONPERMEATING GAS 有权

    公开(公告)号：US20210299605A1

    公开(公告)日：2021-09-30

    申请号：US16834270

    申请日：2020-03-30

    申请人： Air Products and Chemicals, Inc.

    发明人： Donald E. Henry

    IPC分类号： B01D53/22 ,  C10L3/10 ,  C07C7/00 ,  C07C7/144

    摘要： A method for separating a raw feed gas stream using a plurality of membrane separation stages includes separating a pressurized feed gas stream into a first nonpermeate stream and a first permeate stream, compressing the first permeate stream to form a compressed first permeate stream, separating the compressed first permeate stream into a second nonpermeate stream and a second permeate stream, separating the second permeate stream into a third nonpermeate stream and a third permeate stream, combining the third nonpermeate stream with a raw feed gas stream to form a combined feed stream, compressing the combined feed stream to form a compressed combined feed stream, and combining the second nonpermeate stream with the compressed combined feed stream to form the pressurized feed gas stream.