Method for preparation of high purity (meth)acrylic acid

A method for preparation of (meth)acrylic acid, the method comprising:

• bringing a mixed gas including (meth)acrylic acid into contact with water in an absorption column to obtain first and second (meth)acrylic acid aqueous solutions;
• discharging the first (meth)acrylic acid aqueous solution from a lower portion of the absorption column and supplying the solution to a crystallizer, and discharging the second (meth)acrylic acid aqueous solution from a side portion of the absorption column;
• supplying the second (meth)acrylic acid aqueous solution to a water separation column to obtain a distillate including (meth)acrylic acid and high-boiling point by-products;
• supplying the distillate to a high-boiling point by-product separation column and supplying an upper discharge stream of the high-boiling point by-product separation column including (meth)acrylic acid to the crystallizer;
• and
• obtaining purified (meth)acrylic acid in the crystallizer and circulating a part of a mother liquor recovered in the crystallizer to the absorption column and the rest to the water separation column.