溶解结晶法制备精蒽的研究

摘要

文章以粗蒽为原料、DMF复配溶剂的最佳结晶条件是保温温度为90℃，保温时间50min，冷却结晶温度为25℃，保温时间50min，固液比1．8g/ml。结果表明：这一方法使溶剂得以循环利用，环境污染小，且成本低，精蒽的纯度可达96％以上，收率达到67％以上。%In this paper , we take crude anthracene as raw material , and DMF as the solvent to prepare refined anthracene .The opti-mum crystallization condition for DMP are determined as below:dissolved temperature 90℃, crystal-keeping time 50 min, solvent ra-tio 1.8g/ml, cooling crystallization temperature 25℃, cooling crystallization time 50min.The results show that the process hardly has environmental pollution , the solvent is circularly utilized , the cost is lower , the purity of refined anthracene can reach to more than 96%, the total recovery yield of refined anthracene is higher than 67%.