Patent ID: 9005532
Filing Date: 2015-04-14
Classification: B01D,C07C

Abstract:
1. An apparatus for continuous recovery of (meth)acrylic acid, comprising: a gas phase oxidation reactor for conducting gas phase oxidation of at least one compound selected from the group consisting of propane, propylene, butane, i-butylene, t-butylene, and (meth)acrolein in the presence of a catalyst to prepare a mixed gas containing (meth)acrylic acid; a quench tower for quenching the (meth)acrylic acid-containing mixed gas supplied from the gas phase oxidation reactor to remove high boiling point by-products in the (meth)acrylic acid-containing mixed gas; a (meth)acrylic acid absorption tower for contacting the high boiling point by-product-free (meth)acrylic acid-containing mixed gas with water or an aqueous solution to obtain an aqueous solution containing (meth)acrylic acid; and a distillation tower for purifying the (meth)acrylic-containing aqueous solution supplied from the (meth)acrylic acid absorption tower to obtain (meth)acrylic acid.