Method and device for producing polyphosphoric acid

Details Method and device for producing polyphosphoric acid Method and device for producing polyphosphoric acid

C - Chemistry, Metallurgy

01

B

C01B 25/24 (2006.01) B01J 19/26 (2006.01) B01J 19/30 (2006.01) B01J 19/32 (2006.01)

Patent

CA 2756040

The invention relates to a method for producing polyphosphoric acid including spraying orthophosphoric acid into a flame, polymerizing/condensing the orthophosphoric acid into polyphosphoric acid, accompanied by forming hot gases and separating said hot gases flowing cocurrently with the polyphosphoric acid from said polyphosphoric acid. The invention also relates to a device for implementing same.

Procédé de production d'acide polyphosphorique comprenant une pulvérisation d'acide orthophosphorique dans une flamme, une polymérisation-condensation de l'acide orthophosphorique en acide polyphosphorique accompagnée d'une formation de gaz chauds et une séparation desdits gaz chauds circulant à co-courant avec l'acide polyphosphorique dudit acide polyphosphorique et dispositif pour sa mise en oeuvre.

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