The operation principle and device to produce acetin and hydroxyethyl acetate for foundry firming agent were analyzed in the paper , and the choice of esterification catalyst and dehydrated agent in the esterifying process also were analyzed theoretically , and finally , the better producing operation device , catalyst and dehydrated agent were obtained 摘要分析了鑄造用有機(jī)酯固化劑酯酸甘油酯和乙二醇醋酸酯合成工藝原理及裝置,同時(shí)對(duì)有機(jī)酯合成工藝條件中脫水劑和催化劑的選擇的理論依據(jù)進(jìn)行了分析,得出鑄造用有機(jī)酯固化劑的最佳合成工藝裝置和脫水劑、催化劑。