文献类型：专利

英文题名：Refining acetylacetone by removing low boiling point substances, de-acidifying and removing anhydride, passing crude acetylacetone in refining tower, recycling low-boiling point substances, and extracting high-boiling point substances

作者：CENG Y;GU M;JI L;LI T;YANG Z;YE X;ZHU J;ZENG Y

机构：[1]UNIV EAST CHINA SCI&TECHNOLOGY;[2]SHANGHAI WUJING CHEM CO LTD

申请号：CN101514151-A

申请日：2009-03-30

公开日：2009-08-26

语种：英文

收录：DERWENT

摘要：NOVELTY - Acetylacetone is refined by removing low b.pt. substances, de-acidifying and removing anhydride to obtain crude acetylacetone, passing acetylacetone in refining tower which is a decompressing refining tower, collecting low-b.pt. ingredients including isopropenyl acetate and acetone at the top of the tower, recycling in crude acetylacetone tank, passing in refining tower, and extracting high-b.pt. substances. USE - Method of refining acetylacetone (claimed). ADVANTAGE - The isopropenyl acetate and acetone obtained at the top of the tower can be recycled and reused. High-boiling-point ingredient is obtained at the tower. The working section in refining tower is easy to control and operate. The obtained product has 99.9% purity.