邻(对)氯苯甲醛产品脱除邻(对)氯苄醇杂质工艺研究  

Research on the Process of Removing Ortho(para)Chlorobenzyl Alcohol in Ortho(para)Chlorobenzaldehyde Products

作　　者：朱文浩 袁志明 胡靓 牛富强 罗卫 Zhu Wenhao;Yuan Zhiming;Hu Liang;Niu Fuqiang;Luo Wei(Hubei Yuanhuan Industrial Investment Co.,Ltd.,Dangyang 444100,China)

机构地区：[1]湖北源洹实业投资有限公司,湖北当阳444100

出　　处：《云南化工》2024年第12期89-91,共3页Yunnan Chemical Technology

摘　　要：为了脱去氯化水解工艺合成的邻(对)氯苯甲醛中杂质邻(对)氯苄醇,将邻(对)氯苯甲醛产品中邻(对)氯苄醇用卢卡斯试剂转化为邻(对)氯一氯苄,然后在碱解工艺中加入催化剂三乙胺,将邻(对)氯一氯苄络转化为溶于水的季铵盐,通过油水分离、减压蒸馏实现产品邻(对)氯苯甲醛的精制提纯。控制杂质邻(对)氯苄醇在邻(对)氯苯甲醛产品中的质量分数小于0.20%,从而达到提高邻(对)氯苯甲醛产品质量(质量分数≥99.5%)的目的。In order to remove the impurity ortho(para)chlorobenzyl alcohol in ortho(para)chlorobenzaldehyde synthesized by chlorination hydrolysis process,ortho(para)chlorobenzyl alcohol,an impurity in ortho(para)chlorobenzaldehyde product,was converted into ortho(para)chlorobenzyl chloride using Lucas reagent.Then,in the alkaline hydrolysis process,catalyst triethylamine was added to convert ortho(para)chlorobenzyl chloride complex to water-soluble quaternary ammonium salt.The product ortho(para)chlorobenzaldehyde was refined and purified by oil-water separation and vacuum distillation.Controlling the content of impurity para chlorobenzyl alcohol in para chlorobenzaldehyde products to be less than 0.20%,in order to improve the quality of para chlorobenzaldehyde products(main content≥99.5%).

关 键 词：邻(对)氯苯甲醛 邻(对)氯苄醇 分离 氯化水解 

分 类 号：TQ244.1[化学工程—有机化工]