Device for recovering methacrylic acid or/and ester raffinate thereof

The utility model provides a device for recovering methacrylic acid or/and ester raffinate thereof, which comprises a catalytic cracking reaction kettle, the catalytic cracking reaction kettle is connected with a primary heat exchanger, and the primary heat exchanger is connected with a rectifying tower or is connected with the rectifying tower through a lysate intermediate tank and a lysate feed pump in sequence. The coupling rectification device disclosed by the utility model realizes separation of cracking products, realizes resource reutilization, and remarkably improves the economic effect. 本实用新型提供一种回收甲基丙烯酸或/和其酯残液的装置，包括催化裂解反应釜，所述催化裂解反应釜与一级换热器连接，所述一级换热器与精馏塔连接或所述一级换热器依次通过裂解液中间罐、裂解液进料泵与精馏塔连接。本实用新型耦合精馏装置，实现裂解产物的分离，实现资源化再利用，经济效果显著提升。