氯乙酸生产主反应釜自动化改造与优化

Automatic transformation and optimization of main reaction kettle for chloroacetic acid production

通过对氯乙酸主反应釜开展HAZOP分析,采用最优安全仪表系统控制及联锁方案,将事故风险降至可接受范围内,为氯化工艺的自动化改造提供技术支撑;通过对工艺参数控制要求及实际操作经验的总结,分析了反应密度、反应釜温度和氯气通入量之间的内在联系,进而制定出DCS系统提升改造方案,实现生产效率和反应收率的最大化。改造后降低了生产成本,提高了反应收率和速率,取得了一定的经济效益;同时降低了超温超压现象导致的火灾中毒事故的风险。

Through conducting HAZOP analysis on the main reaction kettle of chloroacetic acid,the optimal safety instrument system control and interlocking scheme is adopted to reduce the accident risk to an acceptable range and provide technical support for the automatic transformation of the chlorination process.By summarizing the process parameter control requirements and actual operation experience,the internal relationship among reaction density,reaction kettle temperature and chlorine gas inflow is analyzed.Then,the DCS system upgrade scheme is formulated to maximize production efficiency and reaction yield.After the transformation,the production cost is reduced,the reaction yield and rate are improved,and certain economic benefits are obtained.At the same time,the risk of fire and poisoning accidents caused by overtemperature and over-pressure phenomena is reduced.