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 摘要分析了铸造用有机酯固化剂酯酸甘油酯和乙二醇醋酸酯合成工艺原理及装置，同时对有机酯合成工艺条件中脱水剂和催化剂的选择的理论依据进行了分析，得出铸造用有机酯固化剂的最佳合成工艺装置和脱水剂、催化剂。
