生产染料中间体的新工艺及设备  

Technology and Equipment for Production of Dyestuff Intermediates

作　　者：孟明扬[1] 马瑛[1] 谭立哲[1] 杨文东[1] 

机构地区：[1]沈阳化工研究院,辽宁沈阳110021

出　　处：《精细与专用化学品》2005年第13期11-14,共4页Fine and Specialty Chemicals

摘　　要：介绍了侧链氯化、氧化、重氮化和偶合的工艺及设备。侧链氯化可采用连续光催化氯化和氯化精馏法;氧化工艺采用气液固系搅拌式氧化反应器,可由对二甲苯氧化直接制备聚合级对苯二甲酸;汽巴公司发明了用极性电压法控制连续重氮化过程中亚硝酸盐加入速度的探测系统,赫斯特公司发明了连续式偶合装置。The technology and equipment for the process of side-chain chlorination, oxidation, diazotization and coupling are introduced. The continual photocatalytic chlorination and chlorination-rectification methods can be adopted for side-chain chlorination process. Polymer grade p-phthalic acid can be synthesized by p-xylene directly oxidation in gas-liquid-solid reaction system with stirred tank reactor. Ciba has developed a nitrite feed rate gauge system for controlling process of continuous diazotization by polar voltage method, and Hoechst has developed newly an equipment for continual coupling.

关 键 词：工艺及设备 染料中间体 侧链氯化 光催化氯化 氧化反应器 对苯二甲酸 二甲苯氧化 氧化工艺 直接制备 探测系统 亚硝酸盐 氮化过程 汽巴公司 重氮化 精馏法 搅拌式 聚合级 电压法 连续式 偶合 发明 

分 类 号：TQ612[化学工程—精细化工] TD94[矿业工程—选矿]