US 11,787,695 B1
Carbon neutral conversion of residue
Chun Han, Dhahran (SA); and Salahdine Idrissi, Dhahran (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Oct. 26, 2022, as Appl. No. 17/974,259.
Int. Cl. C01B 3/36 (2006.01); B01J 19/24 (2006.01); C07C 29/151 (2006.01); C07C 1/24 (2006.01); C07C 51/12 (2006.01); C10K 3/04 (2006.01); C10K 1/00 (2006.01); B01D 53/14 (2006.01); B01D 53/047 (2006.01); B01D 53/22 (2006.01); C01B 3/12 (2006.01)
CPC C01B 3/36 (2013.01) [B01D 53/047 (2013.01); B01D 53/1462 (2013.01); B01D 53/229 (2013.01); B01J 19/245 (2013.01); B01J 19/2445 (2013.01); C01B 3/12 (2013.01); C07C 1/24 (2013.01); C07C 29/1518 (2013.01); C07C 51/12 (2013.01); C10K 1/004 (2013.01); C10K 3/04 (2013.01); B01D 2257/304 (2013.01); B01D 2257/502 (2013.01); B01D 2257/504 (2013.01); C01B 2203/0283 (2013.01); C01B 2203/047 (2013.01); C01B 2203/0475 (2013.01); C01B 2203/061 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method comprising:
heating and reacting a petroleum residue stream with an oxygen stream and a carbon dioxide stream in a gasification unit to produce a syngas stream comprising carbon dioxide, carbon monoxide, and hydrogen;
converting at least a portion of the carbon monoxide of the syngas stream into carbon dioxide to produce a shifted syngas stream;
separating at least a portion of the shifted syngas stream to produce a syngas feed stream, wherein separating at least the portion of the shifted syngas stream comprises:
separating at least a portion of carbon dioxide from the shifted syngas stream to produce a recycle carbon dioxide stream; and
separating at least a portion of carbon monoxide from the shifted syngas stream to produce a carbon monoxide stream;
converting at least a portion of the syngas feed stream into methanol to produce a methanol stream;
converting at least a first portion of the methanol stream into one or more alkenes to produce an olefins stream;
reacting at least a second portion of the methanol stream with at least a portion of the carbon monoxide stream to produce acetic acid; and
recycling at least a portion of the recycle carbon dioxide stream to the gasification unit to facilitate the production of the syngas stream.