Method for reducing dilute acid yield in citric acid extraction process

The invention relates to the field of citric acid, in particular to a method for reducing the yield of dilute acid in the extraction process of citric acid. By controlling the conductivity of primaryneutralization and secondary neutralization in the process of extracting citric acid through a calcium hydrogen method, a control method for manually measuring a pH value in the prior art is replaced;and according the method, the production of dilute acid is reduced, production process can be automated, operation is simpler, and process is more stable. 本发明涉及柠檬酸领域，具体涉及一种降低柠檬酸提取过程中淡酸产生量的方法。通过控制氢钙法提取柠檬酸过程中一次中和、二次中和的电导率，取代现有技术中的人工测pH值的控制方法，减少淡酸产生的同时，能够使生产过程实现自动化，操作更加简单，工艺更加稳定。