OXIDATION SYSTEM USING INTERNAL STRUCTURE TO IMPROVE HYDRODYNAMICS Russian patent published in 2011 - IPC B01J10/00 B01J8/22 

FIELD: chemistry.

SUBSTANCE: invention can be used in chemical industry to prepare a composition of polycarboxylic acids. A bubble column reactor 600 has an external reaction vessel and an internal structure 602 which lies at least partly inside the external reaction vessel. The reaction zone lies inside the external reaction vessel and outside the internal structure 602. The rest zone lies inside the internal structure 602. The rest zone includes at least one section lying from the reaction at a distance equal to approximately 0.2 m or a multiple of the maximum horizontal diametre of the external reaction vessel with a factor of 0.05.

EFFECT: invention simplifies gas-phase oxidation reactions.

40 cl, 4 tbl, 31 dwg