环己酮生产中碳酸钠回收干燥装置的设计与分析

Design and analysis of sodium carbonate recycling drying equipment for cyclohexanone production

针对环己酮生产过程中废碱碳酸钠回收利用的工艺特点,设计了一种新型干燥装置,对干燥器的干燥流程、干燥器的结构和工作原理进行了分析及计算。结果表明:循环自动干燥碳酸钠设备主要由干燥箱、供热风系统、抽湿系统、扩散系统和包装系统组成;通过温控由电烘箱进行碳酸钠干燥实验,得到了碳酸钠干燥设备的干燥曲线,该系统干燥能力达1～2 t/h,干燥后碳酸钠含水率小于2%;该系统利用工厂废烟气作热源,节省干燥成本,且无环境污染。该设备干燥能力大,热效率高,能耗低,调控性能好,很好的解决了环己酮工业中废碱处理的难题。

A new type of drying equipment was designed according to the characteristics of the recycling and utilization of waste sodium carbonate as the by-product of alkali waste burning in cyclohexanone process.The drying process,structure and working principle of the drying equipment were analyzed and calculated.The results showed that the automatic recycling drying equipment for sodium carbonate was consist of drying box,heating air system,dehumidifying system,scattering system and packaging system.The drying curves of sodium carbonate drying equipment were obtained through the drying experiment using a temperature-control electric oven.The drying capacity of this system reached 1-2 t/h and the moisture content of sodium carbonate was below 2% after drying.The system saved the drying cost without environment pollution by using process gas waste as the heat resouce.This equipment had the advantages of high drying capacity,high thermal efficiency,low energy consumption and good regulation performance,which successfully resolved the problem of alkali waste treatment in cyclohexanone industry.