US 2022/0194878 A1Published application

Recovery Of Light Olefins From Dry Hydrocarbon Gas From Refinery And Petrochemical Production Processes For Production Of Alkylate

AssigneeKellogg Brown & Root LLC

InventorsGautham Krishnaiah, Brian Heasley, John Lewis Webb, JR., Rahul Radhakrishna Pillai, Vijender K. Verma, Narinder Singh Duggal

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Abstract

Methods and systems for treating an olefin-containing stream are disclosed. The disclosed methods and systems are particularly suitable for treating an off-gas stream in a refining or petrochemical process, such as from a fluid catalytic cracker (FCC), coker, steam cracker, and the like. The stream is treated in an absorber column to reject lighter stream components and to absorb ethylene and/or propylene into a solvent. The solvent is typically isobutane. The enriched solvent stream from the absorber column is fed to an alkylation reactor, which reacts the dissolved olefin with the isobutane solvent to produce an alkylate product.

Claims20

Dependent claims

A method of treating an olefin-containing stream, wherein the olefin-containing stream comprises:

one or more olefins selected from the group consisting of ethylene and propylene, and
one or more light components selected from the group consisting of hydrogen (H2), carbon monoxide (CO), and methane, the method comprising:
providing the olefin-containing stream to an absorber column,
separating the one or more olefins from the one or more light components by contacting the olefin-containing stream with a solvent in the absorber column to absorb at least a portion of the one or more olefins in the solvent to provide an olefin-enriched solvent stream, wherein the solvent is an alkylation precursor,
providing the olefin-enriched solvent stream to an alkylation reactor, and
reacting the one or more olefins with the solvent in the alkylation reactor to produce an alkylate.

3 more elements

Dependencies are inferred from the claim text.