一、引言扬子石油化工公司乙二醇装置,是该公司烯烃厂成套装置之一,年产20万吨纤维级乙二醇,属于目前世界上规模最大的乙二醇装置.它以乙烯和氧气为原料,在银催化剂作用下,通过反应,部分反应物精制生成浓度为99.99％的中间商品环氧乙烷,大部分反应物经过再反应和浓缩,得到浓度为99.8％的最终产品乙二醇。氧气和循环气中的乙烯是通过混合器然后进入反应器的,为了提高装置的作业率,一方面,要求有足够高的氧气混合浓度,另一方 I. Introduction Yangzi Petrochemical Company ethylene glycol plant is one of the company’s olefin plant complete sets of equipment, with an annual output of 200,000 tons of fiber grade ethylene glycol, belonging to the world’s largest ethylene glycol plant which ethylene and oxygen As the raw material, under the action of a silver catalyst, part of the reactant was refined to produce the intermediate product ethylene oxide with a concentration of 99.99%. Most of the reactants were re-reacted and concentrated to obtain a final product of ethylene glycol with a concentration of 99.8% . Ethylene in the oxygen and recycle gas is passed through the mixer and then into the reactor. To increase the operating rate of the unit, on the one hand, a sufficiently high oxygen concentration is required and the other