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    CATALYST COMPOSITION FOR DIRECT CONVERSION OF ETHANOL TO PROPYLENE
    7.
    发明公开
    CATALYST COMPOSITION FOR DIRECT CONVERSION OF ETHANOL TO PROPYLENE 有权
    丙酸EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN

    公开(公告)号：EP2544817A1

    公开(公告)日：2013-01-16

    申请号：EP11707772.7

    申请日：2011-03-07

    申请人： Dow Global Technologies LLC

    发明人： LIU, Yu ,  MALEK, Andrzej ,  SCHWEIZER, Albert, E., Jr.

    IPC分类号： B01J29/48 ,  C07C1/20 ,  C07C11/06

    CPC分类号： B01J29/48 ,  C07C1/20 ,  C07C2529/48 ,  Y02P20/52 ,  C07C11/06

    摘要： A process to prepare propylene showing desirably increased selectivity comprises contacting, at an elevated temperature, ethanol and a rhenium oxide-modified ZSM-5 zeolite catalyst, under conditions suitable to form propylene. The rhenium oxide-modified ZSM-5 zeolite catalyst may be prepared by impregnating, in an aqueous or organic medium, a ZSM-5 zeolite with a rhenium source, under conditions suitable to form a catalyst precursor, and calcining the catalyst precursor under conditions suitable to form a rhenium oxide-modified ZSM-5 zeolite catalyst.

    摘要翻译： 制备丙烯的方法显示出期望的增加的选择性包括在适于形成丙烯的条件下，在高温下使乙醇和氧化铼改性的ZSM-5沸石催化剂接触。 氧化铼氧化物改性的ZSM-5沸石催化剂可以通过在适合于形成催化剂前体的条件下在含水或有机介质中用铼源浸渍ZSM-5沸石并在合适的条件下煅烧催化剂前体来制备 以形成氧化铼氧化物改性的ZSM-5沸石催化剂。

    METHODS FOR REDUCING FORMATION OF CARBON DISULFIDE IN STEAM CRACKING PROCESSES TO PRODUCE OLEFINS
    8.
    发明公开
    METHODS FOR REDUCING FORMATION OF CARBON DISULFIDE IN STEAM CRACKING PROCESSES TO PRODUCE OLEFINS 审中-公开

    公开(公告)号：EP3933012A1

    公开(公告)日：2022-01-05

    申请号：EP20386034.1

    申请日：2020-06-29

    申请人： Dow Global Technologies LLC

    发明人： Wang, Hangyao ,  Pazmino, Jorge H. ,  LIU, Yu ,  Bellos, Georgios

    IPC分类号： C10G9/36 ,  C10G45/32 ,  C10G45/02 ,  C10G75/04

    摘要： Methods for producing olefins through hydrocarbon steam cracking include passing a hydrocarbon feed that includes one or more hydrocarbons to a hydrocarbon cracking unit and passing one or more sulfur-containing compounds to the hydrocarbon cracking unit. The sulfur-containing compounds include at least hydrogen sulfide gas, and a flow rate of the sulfur-containing compounds to the hydrocarbon cracking unit is sufficient to produce a molar concentration of elemental sulfur in the hydrocarbon cracking unit of from 10 ppm to 200 ppm. The methods include cracking the hydrocarbon feed in the hydrocarbon cracking unit to produce a cracker effluent and contacting the cracker effluent with a quench fluid in a quench unit to produce at least a cracked gas and a first pygas. The first pygas has a concentration of carbon disulfide less than 50 ppmw based on the total mass flow rate of the first pygas.