| 摘要 |
The present invention relates to a method for continuously recovering (meth)acrylic acid and an apparatus used for the recovering method. The method for continuously recovering (meth)acrylic acid according to the present invention can significantly reduce the amount of used extraction solvent and the amount of energy consumed in the whole process and can minimize polymerization reaction of (meth)acrylic acid in a recovery process. Therefore, the present invention enables the stable recovery of (meth)acrylic acid and the operation of a continuous process. The method for continuously recovering (meth)acrylic acid comprises: an absorption process of obtaining the aqueous solution of (meth)acrylic acid by making mixed gas, which includes (meth)acrylic acid generated by the synthesis reaction of (meth)acrylic acid, organic by-products and aqueous vapor, contact with water in the absorption column of (meth)acrylic acid; an extraction process of obtaining extract and extract residue of (meth)acrylic acid by making the aqueous solution of (meth)acrylic acid, which has been obtained in the absorption process, contact with an extraction solvent in an extraction column; and a distillation process of obtaining (meth)acrylic acid by distilling feed including the extract of (meth)acrylic acid, which has been obtained in the extraction process. |
