Process of improved sulfur capture from a syngas mixture

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United States of America Patent

PATENT NO 11420155
APP PUB NO 20200360855A1
SERIAL NO

16877425

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Abstract

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A process for sweetening a syngas stream, the process comprising the steps of: providing a syngas stream to a nonselective amine absorption unit, the sour syngas stream comprising syngas, carbon dioxide, and hydrogen sulfide; separating the syngas stream in the nonselective amine absorption unit to obtain an overhead syngas stream and an acid gas stream; introducing the acid gas stream to a membrane separation unit, the acid gas stream comprising hydrogen sulfide and carbon dioxide; separating the acid gas stream in the membrane separation unit to produce a retentate stream and a permeate stream, wherein the retentate stream comprises hydrogen sulfide, wherein the permeate stream comprises carbon dioxide; introducing the retentate stream to a sulfur recovery unit; processing the retentate stream in the sulfur recovery unit to produce a sulfur stream and a tail gas stream, wherein the sulfur stream comprises liquid sulfur.

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Patent Owner(s)

Patent OwnerAddress
MEMBRANE TECHNOLOGY AND RESEARCH INC1360 WILLOW ROAD SUITE 103 MENLO PARK CA 94025

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Al-Otaibi, Faisal D Dhahran, SA 6 5
Bahamdan, Ahmad A Dammam, SA 6 20
Baker, Richard Newark, US 61 1093
Duval, Sebastien A Dhahran, SA 47 167
Hamad, Feras Dhahran, SA 20 96
Huang, Ivy Newark, US 2 205
Lokhandwala, Kaaeid Newark, US 7 35
Merkel, Tim Newark, US 5 6
Vaidya, Milind M Dhahran, SA 37 161

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