PROCESS FOR CONTINUOUS RECOVERING (METH)ACRYLIC ACID AND APPARATUS FOR THE PROCESS

摘要

PURPOSE: A continuous collecting method of (matte)acrylic acid and a recovery system are provided to drastically reduce the amount of energy and to continuously collect high purity (matte)acrylic acid. CONSTITUTION: A continuous recovery method of (matte)acrylic acid comprises the following steps: obtaining (matte)acrylic acid-containing mixing gas by gas phase oxidizing one or more compounds selected from (meth)acrolein, propane, propylene, butane, i-butylene, t-butylene under the existence of a catalyst; removing high boiling point by-product included in (matte) acrylic acid containing mixing gas by quick freezing the acrylic acid - containing mixed gas in a quick freezing tower(101); obtaining a (matte)acrylic acid containing aqueous solution by contacting the (matte)acrylic acid containing mixed gas with water or aqueous solution in a absorbing tower(102); and obtaining (matte) acrylic acid - containing aqueous solution by refining the (matte) acrylic acid containing aqueous solution. [Reference numerals] (AA) Waste gas incineration; (BB) High boiling point by-products; (CC) Processing water; (DD) (meth)acrylic acid contained mixing gas