Control method for production of D-gum sugar by using chemical method

Abstract

The invention discloses a control method for production of D-gum sugar by using a chemical method. The method comprises the following steps: 1, charging, specifically adding a gluconate and a catalyst to a reactor and heating to 65 DEG C; 2, feeding hydrogen peroxide: adding 30% hydrogen peroxide to a feeding tank, and carrying out online automatic adjustment of the feeding amount of the hydrogen peroxide according to the temperature of liquid glucose inside the reactor determined online, particularly, automatically feeding the hydrogen peroxide when the temperature of the liquid glucose is smaller than or equal to 65 DEG C, reducing the feeding speed once when the temperature ascends one DEG C; stopping feeding the hydrogen peroxide when the temperature of the liquid glucose is greater than or equal to 70%, and feeding in cycle until the hydrogen peroxide is completely fed. By adopting the control method disclosed by the invention, the feeding rate of the hydrogen peroxide is controlled in real time according to the temperature rise trend of the reaction process, heat exchange in the temperature rise and cooling processes are reduced, the effective utilization rate of the hydrogen peroxide is improved, and the yield reaches 75-80% of theoretical yield.

Description

technical field [0001] The invention relates to the field of chemical engineering, in particular to a control method for chemically producing D-arabinose. Background technique [0002] D-arabinose is widely used in the fields of food and biomedicine. D-arabinose, or its oxidized D-arabinonic acid, can be used to produce riboflavin. D-arabinose is also an intermediate in the production of the anticancer drug cytarabine. Due to the lack of a low-cost production process, D-arabinose is expensive and its application is limited. [0003] There are many ways to produce D-arabinose. British Patent 953012, a patent applied by Sankyo Company, introduces a process for preparing D-arabinose by total synthesis. This method requires the preparation of five intermediate reaction products , so the process is too cumbersome in terms of industrialization; the US patent (usp3755294) uses calcium gluconate in the presence of an appropriate amount of iron gluconate to react with hydrogen per...

AI Technical Summary

Problems solved by technology

This method uses continuous flow of hydrogen peroxide, heating and cooling cycles to control the reaction temperature, resulting in high energy consumption, hydrogen peroxide is fed at a uniform speed, but the instability of the reaction temperature can indicate that the reaction is not carried out at a uniform speed

[0004] At present, there is a lack of a control method that can effectively utilize hydrogen peroxide, so as to achieve energy saving and increase yield