FIELD: chemistry.
SUBSTANCE: acid is obtained by catalytic oxidation of propylene, propane or isobuthylene in gas phase using molecular oxygen. Method is implemented in multitube heat exchange reactor. Reactor includes multiple parallel reaction tubes, each filled with catalyst. Tube plate adjoins bottom side of some tubes in bunch, forming output for waste gas. Tube plate features rectifier.
EFFECT: uninterrupted reaction course without acrolein decomposition, enhanced purity of reaction product.
4 cl, 1 dwg, 2 ex
