Acrylic acid purification

Details Acrylic acid purification Acrylic acid purification

B - Operations, Transporting

01

D

202/69

B01D 3/14 (2006.01) C07C 51/48 (2006.01)

Patent

CA 1055873

Abstract of the Disclosure Acrolein and other light ends are removed from the effluent of a process for the production of acrylic acid by the vapor phase catalytic oxidation of acrolein or an acrolein precursor, such as propylene, by passing the effluent to the base of a fractionation tower and contacting such with the descending stream of liquid within the tower so as to partially condense the condensibles in the effluent, a portion of the liquid bottoms being recycled to the upper portions of the tower and a portion withdrawn as crude acrylic acid product. Acrolein is removed overhead.

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