Production equipment and production method of sucrose-6-ester

A technology for production equipment and equipment, which is applied in the preparation of sugar derivatives, separation methods, sugar derivatives, etc., can solve the problems of increasing production cost and energy consumption, reducing production efficiency, increasing production cycle, etc., so as to shorten production cycle and improve production efficiency. The effect of production efficiency and production cost saving

Active Publication Date: 2021-06-25
ANHUI JINGHE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method requires the use of gas or solvent vapor that can remove water. The existence of this link seriously affects the continuity of the synthetic sucrose-6-ester production process, increases the production cycle, reduces production efficiency, and consumes a large amount of water that can be removed. gases or solvents, greatly increasing production costs and energy consumption

Method used

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  • Production equipment and production method of sucrose-6-ester
  • Production equipment and production method of sucrose-6-ester
  • Production equipment and production method of sucrose-6-ester

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] According to the mass ratio of sucrose, organotin ester accelerator (1,1,3-diacetoxy-1,1,3,3-tetrabutyldistannoxane), aprotic polar solvent (DMF) is 1 :2:10 configured into 300 kg of reaction solution.

[0098] The production equipment of the sucrose-6-ester adopted by the present application generates the sucrose-6-ester, start the hot roll distillation device, set the temperature of each heating roll to 80°C, and set the speed of the heating roll to 0.1rad / s. The prepared reaction liquid was in 4m 3 The rate of / h is continuously fed into the above-mentioned production equipment, and the negative pressure of the reaction equipment is kept at 0.5kPa, and each valve is set to a corresponding state.

[0099] When the temperature of the inner chamber formed by the U-shaped plate reaches 15°C and the liquid level of the distillate reaches a preset value, the first electromagnetic valve is opened to start the esterification reaction under preset conditions.

[0100] At th...

Embodiment 2

[0106] According to the mass ratio of sucrose, organotin ester accelerator (1,1,3-diacetoxy-1,1,3,3-tetrabutyldistannoxane), aprotic polar solvent (DMF) is 1 :2:10 configured into 500 kg of reaction solution.

[0107] The sucrose-6-ester production equipment of the present application is used to generate sucrose-6-ester, start the hot roll distillation device, set the temperature of the first heating roll to 80°C, set the temperature of the second heating roll to 70°C, and set the temperature of the second heating roll to 70°C. The temperature of the three heating rollers is set to 60°C, and the speed of the heating rollers is set to 0.5rad / s. 3 The rate of / h is continuously fed into the above-mentioned production equipment, and the negative pressure of the reaction equipment is kept at 0.8kPa, and each valve is set to a corresponding state.

[0108] When the temperature of the inner cavity formed by the U-shaped plate reaches 10° C. and the liquid level of the distillate re...

Embodiment 3

[0115] According to the mass ratio of sucrose, organotin ester accelerator (1,1,3-diacetoxy-1,1,3,3-tetrabutyldistannoxane), aprotic polar solvent (DMF) is 1 :2:10 configured into 800 kg of reaction solution.

[0116] The sucrose-6-ester production equipment of the present application is used to generate sucrose-6-ester, start the hot roll distillation device, set the temperature of the first heating roll to 90°C, set the temperature of the second heating roll to 70°C, and set the temperature of the second heating roll to 70°C. The temperature of the three heating rollers is set to 60°C, and the speed of the heating rollers is set to 0.3rad / s. 3 The rate of / h is continuously fed into the above-mentioned production equipment, and the negative pressure of the reaction equipment is kept at 1.0kPa, and each valve is set to a corresponding state.

[0117] The temperature of the inner cavity formed by the U-shaped plate reaches 20° C., and the esterification reaction proceeds.

...

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Abstract

The invention provides production equipment and a production method of sucrose-6-ester. The production equipment comprises a distillation separation tank, a reaction tank and a condensate water collection tank, wherein the distillation separation tank is arranged above the reaction tank and the condensate water collection tank; the distillation separation tank comprises a shell, a hot roller distillation device and the like; the hot roller distillation device comprises a plurality of heating rollers. The plurality of heating rollers are horizontally and tightly arranged between the front and rear side walls of the shell up and down; two ends of the U-shaped plate are fixedly arranged on the front and rear side walls of the bottom of the shell; the plurality of heat exchange pipes are arranged in an inner cavity formed by the U-shaped plate and penetrate through the front and rear side walls of the shell; a feeding pipe is arranged at the top of the shell, a condensate water outlet pipe is arranged on the bottom surface of the shell, and a steam residual liquid discharging pipe penetrates through the bottom surface of the shell and is connected with the U-shaped plate. The condensate water collecting tank is connected with a condensate water outlet pipe; and the reaction tank is connected with a residual steaming liquid discharge pipe. The continuous production of the sucrose-6-ester is realized, the volume of production equipment is reduced, the occupied area is saved, and the yield of the sucrose-6-ester is improved.

Description

technical field [0001] The invention belongs to the technical field of fine chemicals, and in particular relates to production equipment and a production method of sucrose-6-ester. Background technique [0002] Sucralose belongs to a new generation of sweeteners, which has the advantages of high sweetness, no calories, good stability and high safety, and has a very broad market prospect. Sucralose-6-ester is an important intermediate in the production of sucralose. [0003] In the prior art, the process flow of the method for synthesizing sucrose-6-ester mainly includes: mixing sucrose, an aprotic polar solvent and an organotin esterification accelerator into a first reaction mixture; then mixing the first reaction mixture in a specific Under temperature, pressure environment, contact with gas or solvent vapor that can remove water and keep certain reaction time, remove moisture therefrom to obtain the second reaction mixture; Then add carboxylic anhydride to the second rea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D3/00C07H13/06C07H1/00C07H1/06
CPCB01D3/009C07H13/06C07H1/00C07H1/06Y02P20/10B01D5/006C07H13/04B01D1/04B01D1/223B01D5/0018B01D5/0015
Inventor 张正颂李正华杨志健赵金刚张从勇郑学连
Owner ANHUI JINGHE IND
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