Methods and systems for performing chemical separations
AssigneeSiluria Technologies, 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.
Claims31
A method for separating a product from a gas mixture, the method comprising:
- (a) at a first total pressure, directing a gas mixture comprising at least one impurity and a product gas into a pressure swing adsorption (PSA) vessel containing an adsorbent to adsorb the product gas on the adsorbent, wherein the product gas has a first partial pressure;
- (b) at a second total pressure, directing a sweep gas into the PSA vessel to adsorb the sweep gas on the adsorbent and displace the product from the adsorbent to yield a displaced product, wherein the sweep gas has a second partial pressure that is greater than the first partial pressure of the product in the gas mixture;
- and
- (c) desorbing the sweep gas from the adsorbent such that additional product is capable of adsorbing on the adsorbent.
-40. (canceled)
A method for separating oxygen (O2) from nitrogen (N2), the method comprising:
- (a) at a first pressure, directing a mixture of O2 and N2 into a pressure swing adsorption (PSA) vessel containing an adsorbent to adsorb the O2 on the adsorbent, wherein the adsorbent is a metal organic framework (MOF) that is selective for O2;
- and
- (b) at a second pressure that is less than the first pressure, desorbing the O2 from the adsorbent with a purge gas.
-81. (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 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.
-111. (canceled)
An adsorbent, comprising:
- a. a first material that adsorbs (i) a product gas at a first heat of adsorption and (ii) a sweep gas at a second heat of adsorption;
- and
- b. a second material that adsorbs the sweep gas at a third heat of adsorption,
- wherein the first material and the second material are included in a mixed material in a relative proportion such that the mixed material has an average heat of adsorption for the sweep gas, and
- wherein an absolute value of a difference between the first heat of adsorption and the average heat of adsorption is less than an absolute value of a difference between the first heat of adsorption and the second heat of adsorption.
-135. (canceled)
Dependencies are inferred from the claim text.