PIPE Usage And Synthesis
A pipe reactor is commonly used in the manufacture of ammonium polyphosphate. A pipe reactor consists basically of a 5 to 15 meter long corrosion-resistant pipe, to which ammonia, phosphoric acid and sometimes water are simultaneously added at one end through a T-shaped pipe. The latter gives the reactor the name Tee (T) reactor. In a simple reaction chamber, anhydrous ammonia and phosphoric acid react to produce a mixture of ammonium phosphate, ammonium orthophosphate and polyphosphates.