VERFAHREN ZUR REINIGUNG VON (METH)ACRYLSÄUREESTERN

摘要

The present invention relates to the production of (meth)acrylic esters according to a continuous process by transesterification, and in particular to the purification of a crude reaction mixture comprising a C4-C12 (meth)acrylic ester with the aid of a divided wall column used in a configuration that is optimized in terms of separation and recycling of the catalyst, and of energy balance of the overall purification process.The divided wall column is equipped with a partition wall creating separation zones in the column, the wall being non-contiguous with the upper dome of the column in the top part and being contiguous with the bottom of the column in the bottom part.