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Lactic acid no-intermittence acidolysis technology

A non-intermittent, acidolysis technology, applied in the direction of fermentation, etc., can solve the problems of long acidolysis cycle, low acidity, and low yield, and achieve the effect of short acidolysis cycle, high acidity, and high yield of lactic acid

Inactive Publication Date: 2019-04-02
吴林
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AI Technical Summary

Problems solved by technology

[0002] At present, the traditional lactic acid fermentation extraction adopts the intermittent manual sulfuric acid acid hydrolysis process, which has the disadvantages of long acid hydrolysis cycle, low acidity, unstable feed liquid quality, difficult filtration, low yield, low labor efficiency, and high energy consumption.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0006] First determine the optimum temperature for the formation of large particles of calcium sulfate during acidolysis, use a temperature sensor to detect the end-point acidolysis temperature, and feed back to the sulfuric acid flow controller; use a precision pH meter to detect the pH value in the solution online, and feed back to the sulfuric acid flow controller device. Control the flow of sulfuric acid according to the set requirements, so as to achieve the purpose of controlling the temperature and pH of the solution in the zone. Ultrasonic constant volume is used to add feed liquid twice or three times. During this period, the acid hydrolysis speed is guaranteed (low concentration, when the material is small, the stirring is uniform and the reaction speed is fast), and the acidity can be increased by increasing the concentration of the feed liquid. To achieve the effect of saving electricity and steam. Finally, when the reaction is completed and filtered, the stirring...

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Abstract

The invention relates to a lactic acid no-intermittence acidolysis technology, which is suitable for a post-lactic acid extraction process, and belongs to the technical field of chemical displacementseparation. The technology adopts the steps of continuous addition of sulfuric acid, PH meter on-line detection, thermometer end-point compensation detection, ultrasonic liquid-level volume metering,control of stirring speed of a reaction tank by a frequency converter, and linkage secondary feeding. The technology is characterized in that the sulfuric acid is continuously added on-line accordingto the results of the PH meter on-line detection and the thermometer end-point compensation detection; and the volume metering is determined by ultrasonic positioning. The lactic acid no-intermittenceacidolysis technology has the advantages of short acidolysis cycle, high acidity, and high lactic acid yield.

Description

technical field [0001] The invention relates to a non-intermittent acidolysis process of lactic acid, which is suitable for the subsequent extraction process of lactic acid and belongs to the technical field of chemical displacement separation. Background technique [0002] At present, the traditional lactic acid fermentation extraction adopts intermittent manual sulfuric acid acid hydrolysis process, which has the disadvantages of long acid hydrolysis cycle, low acidity, unstable feed liquid quality, difficult filtration, low yield, low labor efficiency, and high energy consumption. Therefore, a non-intermittent acid hydrolysis process of lactic acid is designed, which can overcome the above-mentioned defects. Contents of the invention [0003] In order to shorten the acidolysis cycle, increase the acidity, and increase the yield of lactic acid, the invention provides a non-intermittent acidolysis process for lactic acid. [0004] The present invention is realized throug...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P7/56C07C59/08
CPCC12P7/56C07C59/08
Inventor 不公告发明人
Owner 吴林
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