US 12,325,634 B2
Production of ammonia, methanol, and synthesis products from one or more gasification products
Ravi Ravikumar, Lancaster, CA (US); Sunil Singhal, Gurugram (IN); Soumya Jyoti Choudhury, Faridabad (IN); and Kakul Singh, Ghaziabad (IN)
Assigned to Fluor Technologies Corporation, Irving, TX (US)
Filed by Fluor Technologies Corporation, Irving, TX (US)
Filed on Apr. 20, 2022, as Appl. No. 17/725,296.
Claims priority of provisional application 63/179,023, filed on Apr. 23, 2021.
Prior Publication US 2022/0340419 A1, Oct. 27, 2022
Int. Cl. C01B 3/12 (2006.01); B01D 53/14 (2006.01); B01D 53/18 (2006.01); B01J 6/00 (2006.01); C01B 32/50 (2017.01); C01C 1/04 (2006.01); C07C 1/04 (2006.01); C07C 29/151 (2006.01); C07C 273/02 (2006.01); C07C 273/04 (2006.01); C10G 2/00 (2006.01); C25B 1/04 (2021.01); C25B 9/17 (2021.01); C25B 15/08 (2006.01)
CPC C01B 3/12 (2013.01) [B01D 53/1418 (2013.01); B01D 53/1475 (2013.01); B01D 53/18 (2013.01); B01J 6/008 (2013.01); C01B 32/50 (2017.08); C01C 1/04 (2013.01); C07C 1/0485 (2013.01); C07C 29/1518 (2013.01); C07C 273/025 (2013.01); C07C 273/04 (2013.01); C10G 2/30 (2013.01); C25B 1/04 (2013.01); C25B 9/17 (2021.01); C25B 15/081 (2021.01); C25B 15/083 (2021.01); C01B 2203/0266 (2013.01); C01B 2203/0283 (2013.01); C01B 2203/0415 (2013.01); C01B 2203/042 (2013.01); C01B 2203/061 (2013.01); C01B 2203/062 (2013.01); C01B 2203/068 (2013.01); C01B 2203/0805 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system comprising:
a gasification unit configured to produce an unshifted syngas from biomass and oxygen;
an electrolyzer coupled to the gasification unit and configured to receive water and to produce an oxygen product and a hydrogen product;
an air stream connected to the gasification unit and configured to supply air to the gasification unit, wherein the air stream supplies at least a portion of oxygen to the gasification unit;
a heat exchanger coupled to the gasification unit and configured to cool the unshifted syngas to produce a cooled syngas;
a water gas shift unit coupled to the heat exchanger and configured to receive the cooled syngas and to produce a shifted syngas;
a sulfur removal unit coupled to the water gas shift unit and configured to receive the shifted syngas and to produce a sulfur depleted syngas and a sulfur product;
an absorption unit coupled to the sulfur removal unit and configured to receive the sulfur depleted syngas, remove carbon dioxide from the sulfur depleted syngas, and produce a CO2 depleted syngas and a CO2 product;
a methanation unit coupled to the absorption unit and configured to receive the CO2 depleted syngas to produce a treated gasification product comprising hydrogen and nitrogen; and
a combiner configured to receive the treated gasification product and the hydrogen product and to produce an ammonia synthesis feed stream having a mole ratio of hydrogen to nitrogen of about 3:1,
wherein the oxygen product supplies at least a portion of the oxygen to the gasification unit, and
wherein the electrolyzer is coupled to a renewable energy source.