AMBIENT AIR SEPARATION AND SOEC FRONT-END FOR AMMONIA SYNTHESIS GAS PRODUCTION

    公开(公告)号:US20220081785A1

    公开(公告)日:2022-03-17

    申请号:US17421458

    申请日:2020-03-31

    Abstract: In a method for generating ammonia synthesis gas by electrolysis, comprising the steps of compressing air and feeding it to an air separation process, in which the content of nitrogen is concentrated while the content of oxygen and CO2 is diluted, feeding a mixture of steam and the compressed and refined air into the electrolysis unit or into the first of a series of electrolysis units and passing the outlet from one electrolysis unit to the inlet of the next electrolysis unit, either together with air added after each electrolysis unit or only adding air after the last electrolysis unit, the electrolysis units are run in thermoneutral or endothermal mode and the nitrogen part of the synthesis gas is provided by burning the hydrogen produced by steam electrolysis by the refined air in or between the electrolysis units.

    EXPANDER FOR SOEC APPLICATIONS
    3.
    发明申请

    公开(公告)号:US20210214849A1

    公开(公告)日:2021-07-15

    申请号:US17058970

    申请日:2019-07-09

    Abstract: In a method for generating various synthesis gases by electrolysis, comprising feeding steam and compressed air to the cathode and anode, respectively, of the electrolysis unit or of the first of a series of electrolysis units into the first of a series of electrolysis units, the electrolysis units are operated under an elevated gas pressure, and the oxygen-rich gas leaving the anode is subsequently expanded down to approximately ambient pressure using a gas expander. The electrolysis units are preferably solid oxide electrolysis cell (SOEC) stacks.

    A METHOD FOR GENERATING SYNTHESIS GAS FOR AMMONIA PRODUCTION

    公开(公告)号:US20210032761A1

    公开(公告)日:2021-02-04

    申请号:US16641007

    申请日:2018-10-01

    Abstract: In a method for generating ammonia synthesis gas by electrolysis, comprising feeding a mixture of steam and compressed air into the first of a series of electrolysis units and passing the outlet from one electrolysis unit to the inlet of the next electrolysis unit together with air, the electrolysis units are run in endothermal mode and the nitrogen part of the synthesis gas is provided by burning the hydrogen produced by steam electrolysis by air in or between the electrolysis units. The electrolysis units are preferably solid oxide electrolysis cell (SOEC) stacks.

Patent Agency Ranking