Reactor for continuous large-scale manu - fracture of phosphoric acid by wet process

摘要

Reactor consists of 2 (concentric) cylindrical chambers, outer sub-divided into 3 chambers by radial partitions, with tight cover first and/or second chamber with inlets for reactants, means for introducing and removing cooling air to upper part, rotary pump in first chamber and stirrers in others. Second and third chambers form parallel circulation chambers, whilst fourth, smaller chamber acts as filter. First chamber has overflows into adjacent ends of second jand third chambers and underflows into opposite ends, whilst second and/or third chambers are connected to fourth by apertures in partitions. Advantages are intensive, rapid mixing, effective removal of heat of reaction and intensive cirulation, giving gypsum with optimum filterability.