乙酸乙酯的精制方法_于伟民.pdf

　·　1　08　·　　　　　　　　　　　　　　　, 　　　　　　　　　　　　　Vol.27.No.2, 2005 　 　TECHNIQUE EXCHANGE 于伟民, 　薛永强, 　梁西良, 　杜　程 (, 　150040) 　　:, 。, ;;;; 。 。 :; :TQ 225.241　　　　　:B　　　　　:1001-0017(2005)02-0108-04 Methods for Purification of Ethyl acetate YU Wei-min, XUE Yong-qiang, LIANG Xi-liang an DU Cheng (Hei longj iang Institute of Petrochemistry , Harbin 150040, China ) Ab stract:Purificationmetho s of ethyl acetate by esterification from acetic aci an alcohol were reviewe , which inclu e tra itional four-tower continuous process, extractive purification with the a ition of promoter, extractive ehy rate by saturate salt water, extractive separation with the a ition of organic sol- vents, azeotropic extractive istillation process with the a ition of azeotrope an extractive-reactive istillation process with the a ition of acetic aci .Three- tower continuous istillation process of ethyl acetate from al ehy e con ensation an purification by gas-phase oxi ation of acetic aci an ethylene were also is- cusse . Key words:ethyl acetate;purification 1　-- 前　言 Table 1　Composition of Ethyl Acetate-Ethanol-Water Azeotropic System , () () () /% /% /% / ℃ 。, 82.60 8.40 9.00 70.23 95.60 4.40 78.15 、、 91.53 8.47 70.38 , 69.02 30.98 　 71.81 、。 [1] -- 1。 , ,