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

A technology of arabinose and control methods, which is applied in the field of chemical engineering, can solve problems such as unbalanced reaction, unstable reaction temperature, and high energy consumption, and achieve the effects of stable reaction, reduced heat exchange, and precise control

Inactive Publication Date: 2014-07-02
山东福洋生物科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 reacti

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0009] Example 1:

[0010] In the first step, 3.5L of 8% sodium gluconate solution is added to the 5L reactor, ferric sulfate is added as a catalyst, the amount is 1.0% of the mass of gluconic acid, a temperature sensor is installed on the reactor, and the temperature is raised to 65°C.

[0011] The second step is to add hydrogen peroxide. Add 30% hydrogen peroxide to the feeding tank. The equivalent of hydrogen peroxide is 8 times the equivalent of gluconic acid. The amount of hydrogen peroxide is automatically adjusted online according to the temperature of the sugar solution measured online. When the temperature of the sugar solution ≤ When the temperature is 65℃, the hydrogen peroxide is automatically added, the flow acceleration is 3.5ml / min, the flow acceleration is reduced every time the temperature rises, and the speed is 0.35ml / min each time. When the sugar liquid temperature is ≥70°C, the hydrogen peroxide is stopped. When the temperature drops below 65°C, the hydrogen pe...

Example Embodiment

[0016] Example 2:

[0017] In the first step, 3.5L of 8% calcium gluconate solution is added to the 5L reactor, ferric sulfate is added as a catalyst, and the amount is 1.0% of the mass of gluconic acid. The reactor is installed with a temperature sensor and heated to 68°C.

[0018] The second step is to add hydrogen peroxide. Add 30% hydrogen peroxide to the feeding tank. The equivalent of hydrogen peroxide is 8 times the equivalent of gluconic acid. The amount of hydrogen peroxide is automatically adjusted online according to the temperature measured on-line. When the sugar solution temperature is ≤65℃ When the temperature, the hydrogen peroxide is automatically added, the flow acceleration is 3.5ml / min, the flow acceleration is reduced every time the temperature rises, and the speed is 0.35ml / min each time. When the sugar liquid temperature is ≥70℃, the hydrogen peroxide is stopped and the temperature drops again. When the temperature is below 65°C, the hydrogen peroxide flow is...

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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...

Claims

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Application Information

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IPC IPC(8): C07H3/02C07H1/00
Inventor 赵伟鲁平张虎周生民李淑娟张玲
Owner 山东福洋生物科技股份有限公司
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