Device and method for producing sucrose-6-ester

A device for producing a sucrose-6-ester, comprising:

• a shell;
• a film scraping apparatus;
• and
• a base, wherein
• the film scraping apparatus is on the base, wherein the shell covers the film scraping apparatus and the base;
• the shell comprises a reaction solution inlet and a condensed water outlet;
• the base comprises a carboxylate feed pipe, a reaction product discharge pipe, and a reaction channel connected to the carboxylate feed pipe;
• the film scraping apparatus comprises a temperature control unit, a rotary tube, and a plurality of scrapers arranged on an inner wall of the rotary tube, wherein an outer edge of each of the plurality of scrapers abuts against an outer wall of the temperature control unit;
• the rotary tube is able to rotate around the temperature control unit, such that a reaction solution entering from the reaction solution inlet and flowing downward along the outer wall of the temperature control unit can be scraped into a liquid film on the outer wall of the temperature control unit, wherein the plurality of scrapers are configured to obtain an evaporation residue and a water vapor;
• and
• the temperature control unit is a cylindroid that is arranged coaxially with the rotary tube and composed of a fan-closed heating chamber and a fan-closed cooling chamber, wherein the fan-closed heating chamber and the fan-closed cooling chamber are separated by a thermal insulation plate.