Patent ID: 11965258
Assignee: PEREGRINE HYDROGEN INC.
Field: Surface technology, coating (Chemistry)
Classification: CPC C  Y | IPC C

Claim 0:
1. A method comprising:
combustion of sulfur with oxygen at a temperature greater than about 140° C. in an oxygen enriched atmosphere to produce sulfur dioxide and heat;
in an electrolyzer, oxidizing the sulfur dioxide to sulfuric acid and reducing water to hydrogen, wherein a conversion of the sulfur dioxide is at least 50%, wherein an electrolysis temperature is between 70-90° C.;
separation of the sulfuric acid from unoxidized sulfur dioxide;
after separating the unoxidized sulfur dioxide from the sulfuric acid, concentrating the sulfuric acid from less than 50% to at least 85% using the heat;
converting nitrogen to ammonia using the hydrogen and the heat;
extracting phosphoric acid from phosphate ore using the sulfuric acid; and
forming at least one of monoammonium phosphate, diammonium phosphate, or triammonium phosphate from the ammonia and the phosphoric acid.