本发明提供一种应用锆钨介孔分子筛催化剂制备乙腈的方法,包括如下步骤:将原料醋酸与氨分别汽化后,预热,醋酸与氨的摩尔比为1:2.5-7,进入混合器中混合,再进入装有锆钨介孔分子筛催化剂的固定床中进行催化反应,反应温度为360-450℃,反应气体经水吸收得到乙腈产品;所述锆钨介孔分子 The invention provides a method for preparing acetonitrile by using Zirconium-tungsten mesoporous molecular sieve catalyst. The method comprises the following steps of: preheating the raw materials acetic acid and ammonia, respectively, preheating, the molar ratio of acetic acid to ammonia is 1: 2.5-7, entering the mixer Mixing, and then into a fixed bed equipped with zirconium tungsten mesoporous molecular sieve catalyst for catalytic reaction, the reaction temperature is 360-450 ° C, the reaction gas was absorbed by water to obtain acetonitrile product; the zirconium tungsten mesoporous molecular