Process for producing ammonia synthesis gas and a method for revamping a front-end of an ammonia plant

    公开(公告)号:US10954124B2

    公开(公告)日:2021-03-23

    申请号:US15035151

    申请日:2014-10-13

    申请人: Casale SA

    摘要: A process for producing ammonia make-up synthesis gas and a procedure for revamping a front-end of an ammonia plant for producing ammonia make-up synthesis gas are disclosed, wherein the make-up synthesis gas is produced by means of steam reforming of a hydrocarbon gaseous feedstock; said front-end includes a primary reformer, a secondary reformer, a shift conversion section, a CO2 removal section and optionally a methanation section; a shell-and-tube gas-heated reformer is installed after said secondary reformer, and a portion of the available feedstock is reformed in the tubes of said gas-heated reformer, and heat is provided to the shell side of said gas-heated reformer by at least a portion of product gas leaving the secondary reformer, possibly mixed with product gas leaving the tubes of said gas-heated reformer.

    Arrangement and method for preparing a gas

    公开(公告)号:US10752851B2

    公开(公告)日:2020-08-25

    申请号:US16066505

    申请日:2016-12-30

    申请人: ForestGas Oy

    发明人: Teuvo Karvonen

    摘要: The invention relates to an arrangement for preparing a gas in a closable reactor by supplying the reactor with carbon-based biomass or chopped wood material, such as chips, in substantially oxygen-free conditions, by allowing the biomass or wood material to gasify at a high temperature, and by recovering the gas generated in a gasification reaction. In that the arrangement the reactor has its interior defined by a feed pipe whose inlet end is closable with a shut-off valve, especially with a ball valve, and whose outlet end adjoins a heatable gasification dome, biomass or chopped wood material is delivered from the feed pipe's inlet end into the reactor's interior, the reactor's interior is supplied with free water/water vapor in its supercritical state, which is optionally prepared catalytically by splitting water/water vapor, the biomass or wood material is conveyed into a gasification space of the reactor's interior, which is in connection with the heated gasification dome and which is adapted to have existing conditions selected in a manner such that the water present in said gasification space is present in its supercritical state, and the gas generated in the gasification reaction is recovered.

    CENTRIFUGE REACTOR SYSTEM AND METHOD
    46.
    发明申请

    公开(公告)号:US20200263096A1

    公开(公告)日:2020-08-20

    申请号:US16788640

    申请日:2020-02-12

    申请人: Other Lab, LLC

    发明人: Peter Sturt Lynn

    摘要: A method of generating a hydrogen or hydrocarbon fuel from a feedstock via a centrifuge reactor that includes introducing a flow of feedstock to a centrifuge reactor with a centrifuge assembly having a reaction chamber and configured to rotate about a central rotational axis X, rotating the centrifuge assembly about the central rotational axis X at a tip speed of 100 m/s to 1000 m/s to generate an acceleration gradient from the central rotational axis X and from the first reaction chamber end to the second reaction chamber end; and generating reaction conditions in the reaction chamber, including pressure of 5 MPa to 500 MPa and temperature within a range of 200° C. to 1000° C., the reaction conditions and acceleration gradient causing a separation of products from a reaction of the feedstock within the reaction chamber.

    Hydrogen generation furnace using decomposition of biomass stream

    公开(公告)号:US20200239794A1

    公开(公告)日:2020-07-30

    申请号:US16792223

    申请日:2020-02-15

    发明人: Daji ZHANG

    IPC分类号: C10J3/74 C01B3/02 C01B3/04

    摘要: Disclosed is a hydrogen generation furnace using decomposition of biomass steam, which employs an infrared source and a furnace body with a water-accommodating structure. A steam separation-drying device is cylindrical and provided at an upper part of an interior of the furnace body and a cavity of the steam separation-drying device forms a secondary gasifier. A lattice plate is provided at a bottom of the interior of the furnace body. A lattice combustion grate is provided above a middle of the lattice plate. A steam distributor is provided outside a lower part of the furnace body. The furnace of the invention performs gasified gas separation as well as secondary oxidation and gasification and mixes steam with gas generated from biomass to perform a decomposition reaction for generating hydrogen.

    SYSTEM AND METHOD FOR POWER PRODUCTION INCLUDING METHANATION

    公开(公告)号:US20200224587A1

    公开(公告)日:2020-07-16

    申请号:US16828758

    申请日:2020-03-24

    摘要: The present disclosure relates to a power production system that is adapted to achieve high efficiency power production with carbon capture when using a solid or liquid hydrocarbon or carbonaceous fuel. More particularly, the solid or liquid fuel first is partially oxidized in a partial oxidation reactor that is configured to provide an output stream that is enriched in methane content. The resulting partially oxidized stream can be cooled, filtered, additionally cooled, and then directed to a combustor of a power production system as the combustion fuel. The partially oxidized stream is combined with a compressed recycle CO2 stream and oxygen. The combustion stream is expanded across a turbine to produce power and passed through a recuperator heat exchanger. The recycle CO2 stream is compressed and passed through the recuperator heat exchanger and optionally the POX heat exchanger in a manner useful to provide increased efficiency to the combined systems.