Basic overview of succinic anhydride

Succinic anhydride, commonly known as succinic anhydride, is an important fine chemical intermediate, mainly used in the synthesis of medicines, pesticides, esters and resins. It can also be used in the synthesis and analytical reagents of succinic acid. There are two main methods for producing succinic anhydride: dehydration of succinic acid and direct catalytic hydrogenation of maleic anhydride. Due to the high energy consumption of the dehydration method, the equipment is susceptible to corrosion, the succinic anhydride is easily carbonized, and the operation process is unstable. Maleic anhydride direct catalytic hydrogenation is currently the main production technology of succinic anhydride, but most of them use batch-type hydrogenation process, which has difficulties in separation of products and catalysts, high production cost, discontinuous production process, etc. The continuous catalytic hydrogenation technology has the problems of high catalyst cost, high solvent price, solvent distillation separation, coloration of products and solvents, high production cost and complicated process flow. At present, although the market demand for succinic anhydride is not very large, with the continuous expansion of its downstream field, and with the continuous large-scale production process of succinic anhydride, the production cost of succinic anhydride can be greatly reduced, and the product quality can be improved. To further improve the market competitiveness of products, its market potential is huge and its prospects are broad.