以石灰乳为中和剂的柠檬酸钙合成反应过程与机理研究

以石灰乳为中和剂合成柠檬酸钙工艺简单,成本低廉,便于大规模生产。将柠檬酸溶液加入石灰乳中的方案是一个快速、简单的反应过程,其pH值操作曲线简单,终点突跃明显,易于操作控制,其产品为微弱酸性的缓冲体系,可生产高溶解性的柠檬酸钙。将石灰乳加入柠檬酸溶液的方案是一个慢速、复杂的反应过程,其pH值操作曲线有3个平台、3个突跃,突跃虽多但不很明显,反应时间长,生产中难以操作控制,其产品不再是缓冲体系,可能呈强碱性,易造成产品质量不合格。

Research on Citric Acid Calcium Synthetic Reaction Process and Its Mechanism with Lime Milk as Neutralizer

The synthesis process of citric acid calcium is simple,low cost,and in favor of mass production process with citric acid and lime milk as raw material.The scheme is a rapid,simple reaction process using citric acid solution to join the lime milk,and its pH value operation curve is simple,the sudden jump is clear and easy to control,and its products will be weak acid buffer system which can produce the high solubility of citric acid calcium.Instead,the another scheme is a slow,complex reaction process using lime milk to join citric acid solution,and its pH value operation curve has three platforms,three sudden jumps,but the jumps being not obvious,and the reaction time is long,the production is hard to operate,and its products will no longer be buffer system,may show a strong alkali,easy to cause product quality problem.