Systems and methods for increasing the hydrogen permeance of hydrogen-separation membranes in situ

    公开(公告)号:US11618676B2

    公开(公告)日:2023-04-04

    申请号:US17079312

    申请日:2020-10-23

    申请人: H2 PowerTech, LLC

    摘要: Hydrogen-producing fuel processing systems and related methods. The systems include a hydrogen-producing region configured to produce a mixed gas stream from a feedstock stream, a hydrogen-separation membrane module having at least one hydrogen-selective membrane and configured to separate the mixed gas stream into a product hydrogen stream and a byproduct stream, and an oxidant delivery system configured to deliver an oxidant-containing stream to the hydrogen-separation membrane module in situ to increase hydrogen permeance of the hydrogen-selective membrane. The methods include operating a hydrogen-producing fuel processing system in a hydrogen-producing regime, and subsequently operating the hydrogen-producing fuel processing system in a restoration regime, in which an oxidant-containing stream is delivered to the hydrogen-separation membrane module in situ to expose the at least one hydrogen-selective membrane to the oxidant-containing stream to increase the hydrogen permeance of the at least one hydrogen-selective membrane.

    Membrane-based hydrogen purifiers

    公开(公告)号:US11712655B2

    公开(公告)日:2023-08-01

    申请号:US17107523

    申请日:2020-11-30

    申请人: H2 PowerTech, LLC

    发明人: Charles R. Hill

    IPC分类号: B01D53/22 H01M8/0662 C01B3/50

    摘要: Membrane-based hydrogen purifiers having graphite frame members. The purifiers include a hydrogen-separation membrane module with at least one membrane cell containing at least one hydrogen-selective membrane, which includes a permeate face and an opposed mixed gas face, and a fluid-permeable support structure that physically contacts and supports at least a central region of the permeate face. The membrane cell further includes a permeate-side frame member and a mixed gas-side frame member. The permeate-side frame member is interposed between the hydrogen-selective membrane and the fluid-permeable support structure to physically contact a peripheral region of the permeate face and a peripheral region of the fluid-permeable support structure. The mixed gas-side frame member physically contacts a peripheral region of the mixed gas face. At least one of the permeate-side frame member and the mixed gas-side frame member is a graphite frame member.

    MEMBRANE-BASED HYDROGEN PURIFIERS

    公开(公告)号:US20220168687A1

    公开(公告)日:2022-06-02

    申请号:US17107523

    申请日:2020-11-30

    申请人: H2 PowerTech, LLC

    发明人: Charles R. Hill

    IPC分类号: B01D53/22 H01M8/0662 C01B3/50

    摘要: Membrane-based hydrogen purifiers having graphite frame members. The purifiers include a hydrogen-separation membrane module with at least one membrane cell containing at least one hydrogen-selective membrane, which includes a permeate face and an opposed mixed gas face, and a fluid-permeable support structure that physically contacts and supports at least a central region of the permeate face. The membrane cell further includes a permeate-side frame member and a mixed gas-side frame member. The permeate-side frame member is interposed between the hydrogen-selective membrane and the fluid-permeable support structure to physically contact a peripheral region of the permeate face and a peripheral region of the fluid-permeable support structure. The mixed gas-side frame member physically contacts a peripheral region of the mixed gas face. At least one of the permeate-side frame member and the mixed gas-side frame member is a graphite frame member.

    SYSTEMS AND METHODS FOR INCREASING THE HYDROGEN PERMEANCE OF HYDROGEN-SEPARATION MEMBRANES IN SITU

    公开(公告)号:US20220127142A1

    公开(公告)日:2022-04-28

    申请号:US17079312

    申请日:2020-10-23

    申请人: H2 PowerTech, LLC

    摘要: Hydrogen-producing fuel processing systems and related methods. The systems include a hydrogen-producing region configured to produce a mixed gas stream from a feedstock stream, a hydrogen-separation membrane module having at least one hydrogen-selective membrane and configured to separate the mixed gas stream into a product hydrogen stream and a byproduct stream, and an oxidant delivery system configured to deliver an oxidant-containing stream to the hydrogen-separation membrane module in situ to increase hydrogen permeance of the hydrogen-selective membrane. The methods include operating a hydrogen-producing fuel processing system in a hydrogen-producing regime, and subsequently operating the hydrogen-producing fuel processing system in a restoration regime, in which an oxidant-containing stream is delivered to the hydrogen-separation membrane module in situ to expose the at least one hydrogen-selective membrane to the oxidant-containing stream to increase the hydrogen permeance of the at least one hydrogen-selective membrane.

    MEMBRANE-BASED HYDROGEN PURIFIERS
    7.
    发明公开

    公开(公告)号:US20230330593A1

    公开(公告)日:2023-10-19

    申请号:US18212040

    申请日:2023-06-20

    申请人: H2 PowerTech, LLC

    发明人: Charles R. Hill

    IPC分类号: B01D53/22 H01M8/0662 C01B3/50

    摘要: Membrane-based hydrogen purifiers having graphite frame members. The purifiers include a hydrogen-separation membrane module with at least one membrane cell containing at least one hydrogen-selective membrane, which includes a permeate face and an opposed mixed gas face, and a fluid-permeable support structure that physically contacts and supports at least a central region of the permeate face. The membrane cell further includes a permeate-side frame member and a mixed gas-side frame member. The permeate-side frame member is interposed between the hydrogen-selective membrane and the fluid-permeable support structure to physically contact a peripheral region of the permeate face and a peripheral region of the fluid-permeable support structure. The mixed gas-side frame member physically contacts a peripheral region of the mixed gas face. At least one of the permeate-side frame member and the mixed gas-side frame member is a graphite frame member.