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    Process for oxidative conversion of methane to ethylene
    6.
    发明授权
    Process for oxidative conversion of methane to ethylene 有权

    公开(公告)号：US11148985B2

    公开(公告)日：2021-10-19

    申请号：US16481790

    申请日：2018-01-29

    申请人： Sabic Global Technologies, B.V. ,  Aghaddin Mamedov ,  David West ,  Vidya Sagar Reddy Sarsani ,  Wugeng Liang

    发明人： Aghaddin Mamedov ,  David West ,  Vidya Sagar Reddy Sarsani ,  Wugeng Liang

    IPC分类号： C07C2/84 ,  C07C4/02 ,  C01B3/36

    摘要： A process for producing ethylene and syngas comprising reacting, via OCM, first reactant mixture (CH4&O2) in first reaction zone comprising OCM catalyst to produce first product mixture comprising ethylene, ethane, hydrogen, CO2, CO, and unreacted methane; introducing second reactant mixture comprising first product mixture to second reaction zone excluding catalyst to produce second product mixture comprising ethylene, ethane, hydrogen, CO, CO2, and unreacted methane, wherein a common reactor comprises both the first and second reaction zones, wherein ethane of second reactant mixture undergoes cracking to ethylene, wherein CO2 of second reactant mixture undergoes hydrogenation to CO, and wherein an amount of ethylene in the second product mixture is greater than in the first product mixture; recovering methane stream, ethane stream, CO2 stream, ethylene stream, and syngas stream (CO&H2) from the second product mixture; and recycling the ethane stream and the carbon dioxide stream to second reaction zone.

    Multilayer mixed oxide supported catalyst for oxidative coupling of methane
    8.
    发明授权
    Multilayer mixed oxide supported catalyst for oxidative coupling of methane 有权

    公开(公告)号：US11633721B2

    公开(公告)日：2023-04-25

    申请号：US17769879

    申请日：2020-09-21

    申请人： SABIC Global Technologies B.V.

    发明人： Wugeng Liang ,  Luanyi Li ,  Hector Perez ,  Pankaj Gautam ,  David West

    IPC分类号： B01J23/10 ,  B01J23/02 ,  B01J37/02 ,  B01J37/08 ,  C07C2/84 ,  B01J35/10 ,  B01J35/00 ,  C07C11/04

    摘要： A multilayer supported oxidative coupling of methane (OCM) catalyst composition (support, first single oxide layer, one or more mixed oxide layers, optional second single oxide layer) characterized by formula AaZbEcDdOx/support; A is alkaline earth metal; Z is first rare earth element; E is second rare earth element; D is redox agent/third rare earth element; the first, second, third rare earth element are not the same; a=1.0; b=0.1-10.0; c=0.1-10.0; d=0-10.0; x balances oxidation states; first single oxide layer (Zb1Ox1, b1=0.1-10.0; x1 balances oxidation states) contacts support and one or more mixed oxide layers; one or more mixed oxide layers (Aa2Zb2Ec2Dd2Ox2, a2=1.0; b2=0.1-10.0; c2=0.1-10.0; d2=0-10.0; x2 balances oxidation states; AaZbEcDdOx and Aa2Zb2Ec2Dd2Ox2 are different) contacts first single oxide layer and optionally second single oxide layer, and second single oxide layer (AO), when present, contacts one or more mixed oxide layers and optionally first single oxide layer.

    Low inlet temperature for oxidative coupling of methane
    10.
    发明授权
    Low inlet temperature for oxidative coupling of methane 有权

    公开(公告)号：US10696607B2

    公开(公告)日：2020-06-30

    申请号：US15579385

    申请日：2016-05-02

    申请人： SABIC Global Technologies B.V.

    发明人： Wugeng Liang ,  Sagar Sarsani ,  David West ,  James Lowrey ,  Aghaddin Mamedov ,  Istvan Lengyel

    IPC分类号： C07C2/84 ,  B01J23/10 ,  B01J23/34 ,  B01J35/00 ,  B01J21/08 ,  B01J37/02 ,  B01J19/24

    摘要： Disclosed is a process for producing C2+ hydrocarbons, and systems for implementing the process, that includes providing a reactant feed that includes methane and an oxygen containing gas to a first reaction zone, wherein the temperature of the reactant feed is less than 700° C. contacting the reactant feed with a first catalyst capable of catalyzing an oxidative coupling of methane reaction (OCM) to produce a first product stream that includes C2+ hydrocarbons and heat, and contacting the first product stream with a second catalyst capable of catalyzing an OCM reaction to produce a second product stream that includes C2+ hydrocarbons, wherein the produced heat is at least partially used to heat the first product stream prior to or during contact with the second catalyst, wherein the amount of C2+ hydrocarbons in the second product stream is greater than the amount of C2+ hydrocarbons in the first product stream.