US 12,129,439 B2
Process for the manufacture of a useful product from waste materials and/or biomass
Ivan Philip Greager, Houston, TX (US); Roger Allen Harris, Houston, TX (US); Neil Alexander King, Oxford (GB); Soumitra R. Deshmukh, Houston, TX (US); Zheyan Qiu, Sugar Land, TX (US); and Ashish Gupta, Houston, TX (US)
Assigned to Velocys Technologies Limited, Oxford (GB)
Appl. No. 17/912,684
Filed by Velocys Technologies Limited, Oxford (GB)
PCT Filed Mar. 16, 2021, PCT No. PCT/EP2021/056672
§ 371(c)(1), (2) Date Sep. 19, 2022,
PCT Pub. No. WO2021/185827, PCT Pub. Date Sep. 23, 2021.
Claims priority of provisional application 62/990,702, filed on Mar. 17, 2020.
Claims priority of application No. 2005217 (GB), filed on Apr. 8, 2020.
Prior Publication US 2023/0174878 A1, Jun. 8, 2023
Int. Cl. C10J 3/72 (2006.01); C01B 3/36 (2006.01); C01B 3/48 (2006.01); C01B 3/52 (2006.01); C01B 3/56 (2006.01); C10G 2/00 (2006.01); C10G 45/58 (2006.01); C10G 47/00 (2006.01); C10G 65/12 (2006.01); C10J 3/82 (2006.01); C10K 3/00 (2006.01); C10K 3/04 (2006.01)
CPC C10J 3/721 (2013.01) [C01B 3/36 (2013.01); C01B 3/48 (2013.01); C01B 3/52 (2013.01); C01B 3/56 (2013.01); C10G 2/30 (2013.01); C10G 2/32 (2013.01); C10G 45/58 (2013.01); C10G 47/00 (2013.01); C10G 65/12 (2013.01); C10J 3/82 (2013.01); C10K 3/005 (2013.01); C10K 3/04 (2013.01); C01B 2203/0255 (2013.01); C01B 2203/0283 (2013.01); C01B 2203/0415 (2013.01); C01B 2203/042 (2013.01); C01B 2203/0475 (2013.01); C01B 2203/0485 (2013.01); C01B 2203/062 (2013.01); C01P 2006/80 (2013.01); C10G 2300/1022 (2013.01); C10G 2400/02 (2013.01); C10G 2400/08 (2013.01); C10J 2300/0916 (2013.01); C10J 2300/092 (2013.01); C10J 2300/0946 (2013.01); C10J 2300/1618 (2013.01); C10J 2300/1656 (2013.01); C10J 2300/1659 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A process for the manufacture of a useful product from waste materials and/or biomass by producing a synthesis gas from a feedstock material and subsequently converting the synthesis gas to a useful product in a conversion process having a particular H2:CO usage ratio, the process comprising:
selecting for a first period of time a first carbonaceous feedstock material comprising or derived from waste materials and/or biomass;
gasifying in a gasification zone at least part of the first carbonaceous feedstock material to produce a first raw synthesis gas having a first raw synthesis gas H2:CO ratio;
partially oxidising in a partial oxidation zone at least part of the first raw synthesis gas to produce a first equilibrated synthesis gas having a first equilibrated synthesis gas H2:CO ratio controlled to be below the usage H2:CO ratio of the conversion process;
treating at least part of the first equilibrated synthesis gas to remove impurities and generate a first fine synthesis gas; and
subjecting at least part of the first fine synthesis gas to conversion process reaction conditions effective to produce a first useful product;
selecting for a second period of time a second carbonaceous feedstock material derived from waste materials and/or biomass, the second carbonaceous feedstock being different in its compositional characteristics from the first carbonaceous feedstock;
gasifying in the gasification zone at least part of the second carbonaceous feedstock material to produce a second raw synthesis gas having a second raw synthesis gas H2:CO ratio;
partially oxidising in the partial oxidation zone at least part of the second raw synthesis gas to produce a second equilibrated synthesis gas having a second equilibrated synthesis gas H2:CO ratio also controlled to be below the usage H2:CO ratio of the conversion process;
treating at least part of the second equilibrated synthesis gas to remove impurities and generate a second fine synthesis gas;
and
subjecting at least part of the second fine synthesis gas to conversion process reaction conditions effective to produce a second useful product;
wherein the second raw synthesis gas H2:CO ratio is different from the first raw synthesis gas H2:CO ratio by a percentage ±x.