Separation and purification device and process for synthesizing dimethyl succinylsuccinate

The invention provides a separation and purification device and process for synthesizing dimethyl succinylsuccinate, and belongs to the technical field of solid-liquid separation. The separation and purification device comprises a reaction kettle and a filtering tank; the filter tank comprises a filter rod arranged in a tank body, a filter element arranged in the filter rod, a discharge barrel which is arranged on the outer side of the filter rod and can convey materials on the filter rod, and a filter cake box which is arranged below the discharge barrel and can recycle the materials; a planetary gear transmission assembly capable of driving the filter stick and the filter element to rotate relatively is arranged at the upper part of the tank body. The planetary gear transmission assembly drives the filter stick and the filter element to rotate, so that the flowability of a mixed solution in the tank body is improved, and the filtering efficiency is improved; the filter stick and the filter element can rotat