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    PROCESS FOR THE CONVERSION OF METHANE INTO PROPANAL
    1.
    发明申请
    PROCESS FOR THE CONVERSION OF METHANE INTO PROPANAL 审中-公开

    公开(公告)号：US20190292122A1

    公开(公告)日：2019-09-26

    申请号：US16304469

    申请日：2017-06-13

    Applicant: Dow Global Technologies LLC

    Inventor： Steven L.F. Corthals ,  Thomas Davidian ,  Gerolamo Budroni ,  Peter E. Groenendijk

    IPC: C07C45/50 ,  C07C2/84 ,  C07C5/333 ,  C01B3/36

    Abstract: The present invention provides methods for making propanal in a reaction comprising the oxidative coupling of methane (OCM) and oxygen as a reactant stream in a gas phase reaction, preferably in the presence of water or steam, to form ethylene, ethane, carbon dioxide (CO2), water and syngas (CO and H2) in a first reactor as an ethylene stream, and then forming propanal in a second reactor by feeding to the second reactor the ethylene stream with the syngas from the first reactor in the gas phase and hydroformylating in the presence of a catalyst for a water shift reaction. In the method, the ratio of H2 to CO in the syngas is maintained by either co-feeding steam into the first reactor or the second reactor to generate additional H2 in the syngas, or by forming CO in the second reactor from the water shift reaction by feeding the CO2 from the ethylene stream into the second reactor.

    ZIEGLER-NATTA CATALYST DEACTIVATION AND NEUTRALIZATION
    3.
    发明申请
    ZIEGLER-NATTA CATALYST DEACTIVATION AND NEUTRALIZATION 有权

    公开(公告)号：US20210002393A1

    公开(公告)日：2021-01-07

    申请号：US16977287

    申请日：2019-03-25

    Applicant: Dow Global Technologies LLC

    Inventor： Evelyn Auyeung ,  Sean W. Ewart ,  Daniela Ferrari ,  Thomas Davidian ,  Rony Vanspeybroeck

    IPC: C08F10/02

    Abstract: A solution polymerization process for producing ethylene-based polymer includes introducing ethylene monomer, hydrocarbon solvent, and Ziegler-Natta catalyst into an entrance of a solution polymerization reactor. An ethylene-based polymer is produced by solution polymerizing the ethylene monomer in hydrocarbon solvent. Subsequently, a catalyst deactivator is introduced into the exit of the solution polymerization reactor, thereby producing hydrochloric acid byproduct. The catalyst deactivator includes long chain carboxylate and at least one cation selected from Groups 1, 2, and 12 of the IUPAC periodic table, with the exception of calcium. The catalyst deactivator reduces the effectiveness of the Ziegler-Natta catalyst and neutralizes the hydrochloric acid by forming a chloride salt other than calcium chloride.

    Ziegler-Natta catalyst deactivation and neutralization
    6.
    发明授权
    Ziegler-Natta catalyst deactivation and neutralization 有权

    公开(公告)号：US11236182B2

    公开(公告)日：2022-02-01

    申请号：US16977287

    申请日：2019-03-25

    Applicant: Dow Global Technologies LLC

    Inventor： Evelyn Auyeung ,  Sean W. Ewart ,  Daniela Ferrari ,  Thomas Davidian ,  Rony Vanspeybroeck

    IPC: C08F10/02 ,  C08F2/06 ,  C08F6/02 ,  C08F2/42 ,  C08F110/14

    Abstract: A solution polymerization process for producing ethylene-based polymer includes introducing ethylene monomer, hydrocarbon solvent, and Ziegler-Natta catalyst into an entrance of a solution polymerization reactor. An ethylene-based polymer is produced by solution polymerizing the ethylene monomer in hydrocarbon solvent. Subsequently, a catalyst deactivator is introduced into x the exit of the solution polymerization reactor, thereby producing hydrochloric acid byproduct. The catalyst deactivator includes long chain carboxylate and at least one cation selected from Groups 1, 2, and 12 of the IUPAC periodic table, with the exception of calcium. The catalyst deactivator reduces the effectiveness of the Ziegler-Natta catalyst and neutralizes the hydrochloric acid by forming a chloride salt other than calcium chloride.

    Process for the conversion of methane into propanal
    7.
    发明授权
    Process for the conversion of methane into propanal 有权

    公开(公告)号：US10519087B2

    公开(公告)日：2019-12-31

    申请号：US16304469

    申请日：2017-06-13

    Applicant: Dow Global Technologies LLC

    Inventor： Steven L. F. Corthals ,  Thomas Davidian ,  Gerolamo Budroni ,  Peter E. Groenendijk

    IPC: C07C45/00 ,  C01B3/00 ,  C07C45/50 ,  C07C2/84 ,  C01B3/36 ,  C07C5/333

    Abstract: The present invention provides methods for making propanal in a reaction comprising the oxidative coupling of methane (OCM) and oxygen as a reactant stream in a gas phase reaction, preferably in the presence of water or steam, to form ethylene, ethane, carbon dioxide (CO2), water and syngas (CO and H2) in a first reactor as an ethylene stream, and then forming propanal in a second reactor by feeding to the second reactor the ethylene stream with the syngas from the first reactor in the gas phase and hydroformylating in the presence of a catalyst for a water shift reaction. In the method, the ratio of H2 to CO in the syngas is maintained by either co-feeding steam into the first reactor or the second reactor to generate additional H2 in the syngas, or by forming CO in the second reactor from the water shift reaction by feeding the CO2 from the ethylene stream into the second reactor.

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