METHOD AND PLANT FOR PRODUCING AMMONIA
    6.
    发明公开

    公开(公告)号:US20240255220A1

    公开(公告)日:2024-08-01

    申请号:US18564442

    申请日:2022-05-09

    申请人: Linde GmbH

    摘要: A method for producing ammonia by catalytically reacting hydrogen provided in a first feed stream and nitrogen provided in a second feed stream is proposed, the hydrogen in the first feed stream being at least in part formed by water electrolysis and the nitrogen in the second feed stream being at least in part formed by cryogenic air separation, wherein said cryogenic air separation is performed using an air separation unit comprising a rectification column system, a recycle stream being formed in the air separation unit from a gas stream at least predominantly comprising nitrogen which is withdrawn from the rectification column system, the recycle stream being, in the order indicated, compressed, cooled, expanded and reintroduced into the rectification column system, and wherein waste heat from said catalytically reacting hydrogen and nitrogen is transferred to a steam system providing steam.

    MANUFACTURING METHOD OF BUTADIENE
    9.
    发明公开

    公开(公告)号:US20240158321A1

    公开(公告)日:2024-05-16

    申请号:US18548980

    申请日:2022-03-01

    摘要: [Task] Provided is a manufacturing method of butadiene that can reduce carbon dioxide emissions.
    [Solution] A manufacturing method of butadiene includes an electrolytic reduction process 2 that produces ethylene and oxygen from carbon dioxide and water as a raw material by electrolytic reduction, a butene producing process 3 that produces butene by dimerizing the ethylene produced in the electrolytic reduction process, a mixing process 4 that prepares a mixed gas by mixing the oxygen produced in the electrolytic reduction process, the butene produced in the butene producing process, and air, and a butadiene producing process 5 that produces butadiene by heating the mixed gas and oxidatively dehydrogenating the butene, wherein carbon dioxide by-produced in the butadiene producing process is used as a portion of the raw material in the electrolytic reduction process.

    HYDROGEN SULFIDE CONVERSION
    10.
    发明公开

    公开(公告)号:US20240133049A1

    公开(公告)日:2024-04-25

    申请号:US17969448

    申请日:2022-10-18

    摘要: Power is provided to an electrochemical cell. The electrochemical cell includes an anode side and a cathode side. A solution is flowed to the anode side. The solution includes hydrogen sulfide dissolved in water. Water is flowed to the cathode side. The water flowed to the cathode side can be in the form of steam. Providing power to the electrochemical cell facilitates production of sulfur dioxide on the anode side. Providing power to the electrochemical cell facilitates production of hydrogen on the cathode side. A membrane separating the anode side from the cathode side prevents flow of hydrogen sulfide, water, and sulfur dioxide from passing through the membrane while allowing hydrogen cations and oxygen anions to pass through the membrane. Sulfur dioxide is flowed out of the anode side. Hydrogen is flowed out of the cathode side.