Device and method for preparing sucrose-6-ester

A device for preparing a sucrose-6-ester, comprising a tank body, a heating pipe, an annular cooling apparatus, and a motor, wherein

• the annular cooling apparatus and the heating pipe are arranged in the tank body sequentially from inside to outside in a nested manner;
• wherein the annular cooling apparatus comprises a condensation inner wall, a condenser pipe, and a condensation outer wall that are arranged sequentially from inside to outside in a nested manner;
• a distillation chamber is formed between the heating pipe and the tank body, a condensation chamber is formed between the heating pipe and the condensation outer wall, and a hollow portion of the condensation inner wall forms a reaction chamber;
• the motor electrically connects to the heating pipe and the condensation inner wall, and is able to drive the heating pipe and the condensation inner wall to rotate;
• a feed inlet connected to the distillation chamber is configured at an end face of the tank body, and the end face is further provided with a product discharge pipe connected to the reaction chamber and a condensed water outlet pipe connected to the condensation chamber;
• the other end face of the tank body away from the feed inlet is provided with a carboxylate feed pipe connected to the reaction chamber;
• the heating pipe is provided with a vapor outlet such that a water vapor is able to enter the condensation chamber from the distillation chamber;
• and an evaporation residue channel is configured at an end of the heating pipe away from the feed inlet, and the evaporation residue channel does not contact the annular cooling apparatus and communicates with the reaction chamber;
• and
• a plurality of vapor outlets are configured in a same plane perpendicular to a generatrix direction of the heating pipe;
• and a plurality of semi-annular isolation zones each are provided on the condensation outer wall at positions corresponding to each of the plurality of vapor outlets.