基本信息:
- 专利标题： 苯酚羟基化制邻/对苯二酚产物的分离提纯方法
- 专利标题（英）：Method of separating and purifying o/p-dihydroxy benzene prepared by phenol hydroxylation
- 申请号：CN200710041505.2 申请日：2007-05-31
- 公开(公告)号：CN101054340A 公开(公告)日：2007-10-17
- 发明人： 崔曜 , 许宁 , 张春雷 , 唐勇 , 马建学 , 邵敬铭
- 申请人： 上海华谊丙烯酸有限公司
- 申请人地址： 上海市浦东新区浦东北路2031号
- 专利权人： 上海华谊丙烯酸有限公司
- 当前专利权人： 上海华谊丙烯酸有限公司
- 当前专利权人地址： 上海市浦东新区浦东北路2031号
- 代理机构： 上海华工专利事务所
- 代理人： 应云平; 陈忠安
- 主分类号： C07C39/08
- IPC分类号： C07C39/08 ; C07C37/74 ; C07C37/80
The invention relates to a separation and purification method of catechol and hydroquinone prepared by hydroxylation reaction of phenyl hydrate with hydrogen peroxide, wherein the product consists of water, phenyl hydrate, pyrocatechol, p-dihydroxy benzene and tar. The separation and purification method of present invention principally includes the following steps: transmitting resultant of reaction into normal pressure leading tower, and water solution containing phenols on tower top partially entering extraction column for reclaiming phenyl hydrate; the liquid of leading tower passing though de-phenol main tower, de-phenol auxiliary tower in sequence and tower top fraction of auxiliary tower returning main tower; the liquid of de-phenol auxiliary tower passing through pyrocatechol fractionating tower and p-dihydroxy benzene fractionating tower and then obtaining producers of pyrocatechol and p-dihydroxy benzene whose purity is more than 99% in sequence, at last the tar discharged from decoking tower.
IPC结构图谱:
| C | 化学；冶金 |
| --C07 | 有机化学 |
| ----C07C | 无环或碳环化合物 |
| ------C07C37/00 | 有羟基或氧—金属基连接在六元芳环碳原子上化合物的制备 |
| --------C07C37/64 | .氧—金属基连在六元芳环碳原子上的氧—金属化合物的制备 |
| ----------C07C39/08 | ..二羟基苯；它们的烷基化衍生物 |