公开(公告)号：US09828471B2

公开(公告)日：2017-11-28

申请号：US14483933

申请日：2014-09-11

Applicant: PRAYON TECHNOLOGIES

Inventor： Alain Germeau ,  Bernard Heptia

IPC: C08G79/04 ,  B01J19/24 ,  B01J10/00 ,  B01J19/26 ,  B01J8/02 ,  C01B25/24

CPC classification number: C08G79/04 ,  B01J8/025 ,  B01J8/0278 ,  B01J10/00 ,  B01J19/24 ,  B01J19/26 ,  B01J2219/00157 ,  C01B25/24

Abstract: A method and device for producing polyphosphoric acid burns a fuel in combustion air in a combustion chamber, sprays a spray fluid comprising substantially pure orthophosphoric acid and undertakes polymerization-condensation of the pure orthophosphoric acid. A polyphosphoric acid in the form of an acid mist accompanied by formation of gases which mix with combustion gases resulting from burning of the fuel is formed to reach a predetermined temperature, wherein the mixture causes sudden lowering of combustion gas temperature. The acid mix is separated from the gas mixture and the polyphosphoric acid is collected at a bottom of the combustion chamber and the gas mixture is outputted via a lower part of the combustion chamber separate from the collection of polyphosphoric acid.