| abstract |
The invention relates to the field of chemical technology, and particularly relates to separation equipment and separation method of methyl methacrylate (MMA). The separation equipment of MMA comprises a separation device, and the separation device comprises a solvent tank, an extraction tower, a solvent recovery tower, an impurity ester removal tower and an MMA refining tower. The separation method of MMA comprises a separation process and is operated by the separation equipment by the following steps: 1) extracting the MMA reaction liquid with washing water and n-hexane in the extraction tower to obtain an extract phase from the tower top; 2) heating and refining the extract phase through the solvent recovery tower to obtain coarse MMA from the tower kettle and n-hexane from the tower top; 3) recycling the n-hexane obtained from the tower top in the solvent tank. After the coarse MMA is subjected to impurity ester removal in the impurity ester removal tower and then is processed by the MMA refining tower to obtain the purified MMA product. According to the separation equipment and separation method provided by the invention, the common easily-available n-hexane with a wide source is used as an MMA extraction agent, and the n-hexane is recycled through an MMA refining process. |