Novel acidolysis technique of L-lactic acid
A new technology, lactic acid technology, is applied in the direction of carboxylate preparation, etc., which 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
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[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 area. 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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