摘要
针对目前国内2,4 二氯甲苯生产工艺存在的主要问题,通过改进氯化合成工艺,采用先进碱洗精馏技术,提高了氯化反应收率和碱洗精馏效果,其中氯化反应收率达到了75%以上,氯气利用率>92%,产品质量在99.5%以上,从而有效地降低了生产成本,减少了环境污染,经济效益和社会效益显著,具有很好的推广应用前景。
Against the defects of current domestic synthesis process of 2,4-dichlorotoluene, improvement have been made by applying advanced alkaline rectification technologies. Consequently,The reaction yield is raised and rectification effect is bettered-reaction yield of chlorine is now over 75%;Utilization ratio of chlorine exceeds 92% and product qualification exceeds 99.5%. Therefore, production cost is cut down and pollution is minimized. All this indicates that the improvement is of remarkable economic and social benefits with prospects of being applied extensively.
出处
《精细化工中间体》
CAS
2004年第2期62-64,共3页
Fine Chemical Intermediates
关键词
2
4-二氯甲苯
生产工艺
改进
氯化
精馏
2,4-dichlorotoluene
synthesis process
improvement
chloration
rectification
