Sabic Global Technologies B.v.

Vidya Sagar Reddy Sarsani

David H West

Wugeng Liang

Hector Antonio Perez

Pankaj Singh Gautam

Luanyi Li

Robert R Broekhuis

Aghaddin Mamedov

Tian Gu

Vijayanand Rajagopalan

Istvan Lengyel

James Lowrey

Jae Hyung Kim

James W Kauffman

An ethylene oxide (EO) production process comprising (a) introducing a first reactant mixture (CH, CH, O) to a first reactor system to produce a first effluent stream (CH, CH, O), wherein the mole fraction of ethylene in first effluent stream is greater than in first reactant mixture; wherein the first reactor system is characterized by a first reactor system operating temperature of 270° C.-320° C.; wherein the first reactor system comprises oxidative dehydrogenation (ODH) stage(s); (b) introducing the first effluent stream to a second reactor to produce a second effluent stream (EO, CH, CH, O); (c) separating the second effluent stream into an EO product stream (EO) and recycle stream (CH, CH, O); wherein ethylene is not separated from recycle stream and/or first effluent stream; (d) recycling at least a portion of recycle stream to the first reactor system, and a optionally portion of recycle stream to the second reactor.

Process for producing ethylene oxide from ethane by oxidative dehydrogenation and epoxidation using a recycle reactor design

An ethylene oxide (EO) production process comprising (a) introducing a first reactant mixture (CH, O) to a first reactor to produce a first effluent stream (CH, CH, O); (b) introducing a second reactant mixture to a second reactor to produce a second effluent stream (EO, CH, CH, O); wherein the second reactant mixture comprises at least a portion of first effluent stream; (c) separating the second effluent stream into an EO product stream (EO) and recycle stream (CH, CH, O); wherein ethylene is not separated from recycle stream and/or first effluent stream; and (d) recycling a first portion of recycle stream to the first reactor, and a second portion of recycle stream to the second reactor; wherein recycle split ratio <0.6; and wherein recycle split ratio is defined as ratio of volumetric flowrate of first portion of recycle stream divided by the sum of volumetric flowrates of first portion and second portion of recycle stream.

Process for producing ethylene oxide from ethane by oxidative dehydrogenation and epoxidation with split recycle

The invention relates to a composition containing a catalyst suitable for producing ethylene and other Chydrocarbons at high selectivity while improving both methane conversion and product yield. Particularly, the catalyst contains mixed metal oxides having at least one alkali earth metal and at least one rare earth metal along with an alkali metal promoter in the form of an alkali metal or in the form of an alkali metal tungstate. The invention further provides a method for preparing such a composition, using a calcination process to calcine the alkali metal promoters together with mixed metal oxides. Additionally, the invention further describes a process for producing Chydrocarbons, using such a composition.

OCM catalyst composition having improved C2+ hydrocarbon selectivity

An OCM catalyst composition characterized by general formula ALaEDO; wherein A is an alkaline earth metal; wherein E is a first rare earth element; wherein D is a redox agent or a second rare earth element; wherein the first rare earth element and second rare earth element are different; wherein a is 1.0; wherein b is 0.01-10.0; wherein c is 0-10.0; wherein d is 0-10.0; and wherein x balances the oxidation states. The alkaline earth metal is selected from the group consisting of Mg, Ca, Sr, Ba, and combinations thereof. The first rare earth element and the second rare earth element can each independently be selected from the group consisting of Sc, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Y, Tb, Dy, Ho, Er, Tm, Yb, Lu, and combinations thereof. The redox agent is selected from the group consisting of Mn, W, Bi, Sb, Sn, Ce, Pr, and combinations thereof.

Mixed oxides catalysts for oxidative coupling of methane

A supported oxidative coupling of methane (OCM) catalyst comprising a support and an OCM catalytic composition characterized by the general formula AZEDO; wherein A is an alkaline earth metal; wherein Z is a first rare earth element; wherein E is a second rare earth element; wherein D is a redox agent or a third rare earth element; wherein the first rare earth element, the second rare earth element, and the third rare earth element, when present, are not the same; wherein a is 1.0; wherein b is from about 0.1 to about 10.0; wherein c is from about 0.1 to about 10.0; wherein d is from about 0 to about 10.0; and wherein x balances the oxidation states.

Supported mixed oxides catalysts for oxidative coupling of methane

An OCM nanoplate catalyst comprising &#x2265;25 wt. % nanoplates; wherein a nanoplate is a three-dimensional object defined in accordance with ISO/TS 80004-2:2015; wherein a nanoplate is characterized by a first external dimension (thickness (t)&#x2264;100 nm), a second external dimension (length (l)&#x3e;t), and a third external dimension (width (w)&#x3e;t); wherein l and w can be the same or different; and wherein l&#x2265;5 t, w&#x2265;5 t, or l&#x2265;5 t and w&#x2265;5 t; and wherein the OCM nanoplate catalyst has general formula AZEDO; wherein A=alkaline earth metal; Z=first rare earth element; E=second rare earth element; D=redox agent/third rare earth element; wherein the first, second, and third rare earth element are not the same; wherein a=1.0; wherein b=1.0 to 3.0; wherein c=0 to 1.5; wherein d=0 to 1.5; wherein (b&#x3e;(c+d)); and wherein x balances the oxidation states.

A process for producing ethylene and syngas comprising reacting, via OCM, first reactant mixture (CH&O) in first reaction zone comprising OCM catalyst to produce first product mixture comprising ethylene, ethane, hydrogen, CO, 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, CO, 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 COof 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, COstream, ethylene stream, and syngas stream (CO&H) from the second product mixture; and recycling the ethane stream and the carbon dioxide stream to second reaction zone.

Process for oxidative conversion of methane to ethylene

An oxidative coupling of methane (OCM) catalyst composition comprising one or more oxides doped with Ag; wherein one or more oxides comprises a single metal oxide, mixtures of single metal oxides, a mixed metal oxide, mixtures of mixed metal oxides, or combinations thereof; and wherein one or more oxides is not LaOalone. A method of making an OCM catalyst composition comprising calcining one or more oxides and/or oxide precursors to form one or more calcined oxides, wherein the one or more oxides comprises a single metal oxide, mixtures of single metal oxides, a mixed metal oxide, mixtures of mixed metal oxides, or combinations thereof, wherein the one or more oxides is not LaOalone, and wherein the oxide precursors comprise oxides, nitrates, carbonates, hydroxides, or combinations thereof; doping the one or more calcined oxides with Ag to form the OCM catalyst composition; and thermally treating the OCM catalyst composition.

Silver promoted catalysts for oxidative coupling of methane

A methane conversion process for producing Chydrocarbons comprising (a) introducing a reactant mixture comprising methane (&#x3e;20 mol %) and an inert compound to a reaction unit to produce a reactor effluent stream comprising Chydrocarbons, methane, the inert compound, and water and/or carbon dioxide; (b) removing at least a portion of the water and/or at least a portion of the carbon dioxide from the reactor effluent stream to produce a demethanizer feed stream; (c) feeding at least a portion of the demethanizer feed stream to a demethanizer unit to produce two or more vapor streams (methane rich stream and inert rich stream), and at least one liquid stream (Chydrocarbons); (d) withdrawing at least a portion of the inert rich stream as a purge stream; (e) recycling any remaining portion of the inert rich stream to the reaction unit; and (f) recycling the methane rich stream to the reaction unit.

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Sugar Land, TX, United States of America

Vidya Sagar Reddy Sarsani