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公开时间: 1987-07-03      申请时间: 1985-12-24
申请人: SHOWA DENKO KK

JPS62149637A
patent for invention


标题(英语)

PURIFICATION OF ALLYL ALCOHOL


摘要(英语)

PURPOSE:To remarkably reduce the allyl alcohol concentration is a circulating solution and carry out purification at a low equipment and operating cost, by carrying out recovery of the allyl alcohol from a hydrolysis product of allyl acetate with distillation columns and extraction column in combination. CONSTITUTION:Allyl acetate (AAc) is hydrolyzed in a reaction column 2 to feed a low-boiling fraction (21a) consisting of allyl alcohol (AAL), AAc and water from the top of the first distillation column 21 to a decanter 22 where the low-boiling fraction (21a) is separated into an oily layer (22a) containing much AAc and an aqueous layer (22b) containing little AAc. The oily layer (22a) is then fed to an extraction column 23 and the aqueous layer (22b), together with a bottom liquid (23b) of the extraction column 23, is introduced into the second distillation column 24. A low-boiling fraction (24a) containing AAL, water and a small amount of AAc is then fed to the extraction column 23 where the AAL is extracted with water as a solvent to circulate an overhead liquid (23a) containing no AAL. A high-boiling fraction (24b) consisting of the AAL and water is fed to the third distillation column 25 to recover the concentrated AAL and circulate the water from the bottom of the column 25 to the extraction column 23.


申请人详细信息

序号 名称 数据格式
1 SHOWA DENKO KK docdb

发明人详细信息

序号 名称 数据格式
1 IIZUKA YUKIO docdb
2 IKUSHI ISAO docdb
3 ARAI TATSUHARU docdb

法律状态

序号 日期 法律代码 详细信息
1 20051224 EXPY CANCELLATION BECAUSE OF COMPLETION OF TERM

被引非专利信息

引用阶段 文档类型 文档信息

文档历史

公开时间: 1987-07-03
JPS62149637A
申请时间: 1985-12-24
JP29159485
优先权时间: 1985-12-24
JP29159485

CPC分类


IPC分类

C07C29/80

专利家族

17770962

被引专利信息

发明人 申请人 标题 CPC IPC 公开号/公开日期
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