Methods and systems for performing chemical separations
AssigneeLummus Technology Inc.
InventorsDivya Jonnavittula, Gaurav Chachra, Guido Radaelli
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Abstract
The present disclosure provides a method for generating higher hydrocarbon(s) from a stream comprising compounds with two or more carbon atoms (C2+), comprising introducing methane and an oxidant (e.g., O2) into an oxidative coupling of methane (OCM) reactor. The OCM reactor reacts the methane with the oxidant to generate a first product stream comprising the C2+ compounds. The first product stream can then be directed to a separations unit that recovers at least a portion of the C2+ compounds from the first product stream to yield a second product stream comprising the at least the portion of the C2+ compounds.
Claims22
-63. (canceled)
A method for generating compounds with two or more carbon atoms (C2+ compounds), comprising:
- (a) directing oxygen (O2) and methane (CH4) into an oxidative coupling of methane (OCM) reactor that reacts the O2 and the CH4 in an OCM process to yield a product stream comprising (i) C2+ compounds including olefins and paraffins and (ii) carbon monoxide (CO) and/or carbon dioxide (CO2);
- (b) directing the product stream from the OCM reactor into a separations unit that selectively adsorbs the olefins from the paraffins, wherein the separations unit comprises (i) a pressure swing adsorption (PSA) unit, (ii) a temperature swing adsorption (TSA) unit, or (iii) a membrane unit, and wherein the PSA unit, the TSA unit or the membrane unit comprises a sorbent that selectively adsorbs the olefins;
- and
- (c) desorbing the olefins from the sorbent.
-74. (canceled)
A method for generating compounds with two or more carbon atoms (C2+ compounds), comprising:
- (a) directing oxygen (O2) and methane (CH4) into an oxidative coupling of methane (OCM) reactor that reacts the O2 and CH4 in an OCM process to yield a product stream comprising (i) C2+ compounds including ethylene (C2H4) and (ii) C1 compounds including un-reacted CH4;
- and
- (b) directing the product stream into a separations unit containing a metal organic framework (MOF) that produces (i) a bottoms stream comprising the C2+ compounds and (ii) an overhead stream comprising the C1 compounds.
A method for generating compounds with two or more carbon atoms (C2+ compounds), comprising:
- (a) directing oxygen (O2) and methane (CH4) into an oxidative coupling of methane (OCM) reactor having a catalytic section and a cracking section to produce an OCM product stream, which catalytic section reacts the O2 and CH4 to yield ethylene (C2H4), ethane (C2H6) and heat, which cracking section uses the heat to convert C2H6 into C2H4, and which product stream comprises (i) C2+ compounds including ethylene (C2H4) and ethane (C2H6) and (ii) C1 compounds including un-reacted CH4;
- (b) directing the product stream into a separations unit containing a metal organic framework (MOF) that produces (i) a first stream comprising the C2H4, (ii) a second stream comprising the C2H6 and (iii) a third stream comprising the C1 compounds;
- (c) directing the second stream into the cracking section;
- and
- (d) directing the third stream into the catalytic section.
-135. (canceled)
Dependencies are inferred from the claim text.