Abstract:
Chemical grade propylene and fertiliser grade ammonia are fed with air to a
fluid bed catalytic reactor operating at 420-480oC and 1.3 to 3 bar. High
conversions are obtained in 5-10 seconds in an exothermic reactor. Steam
generated here is used later during purification.
The reactor effluent is scrubbed with water. Since an acrylonitrile/water
azeotrope forms at 80oC, a room temperature separation is performed
followed by dehydration and fractionation to remove light and heavy
impurities.
