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Non-intermittent acidolysis process for lactic acid

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

Inactive Publication Date: 2012-05-23
汤波
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  • Description
  • Claims
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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 in acid hydrolysis, use a temperature sensor to detect the end acid hydrolysis 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 control 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, and the feeding liquid is added 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 feeding liquid. To achieve the effect of saving electricity and steam. Finally, when the reaction is completed and filtered...

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Abstract

The invention relates to a non-intermittent acidolysis process for lactic acid, being suitable for a post-extraction process of the lactic acid and belonging to the technical field of chemical replacement separation. The non-intermittent acidolysis process comprises the steps of: continuous addition of sulfuric acid, pH meter-based online detection, thermometer-based terminal point compensation detection, ultrasonic-based liquid level volume setting, reaction tank stirring speed control by a frequency converter, linked secondary feed supplement and the like. The non-intermittent acidolysis process is characterized in that the sulfuric acid is continuously added on line according to a pH meter-based online detection result and a thermometer-based terminal point compensation detection; and the volume setting is realized through ultrasonic positioning. The non-intermittent acidolysis process disclosed by the invention has the advantages of short acidolysis period, high acidity, high lactic acid yield and the like.

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): C12P7/56
Inventor 汤波
Owner 汤波
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