年产四万吨苯酐生产工艺规划设计年产四万吨苯酐生产工艺设计李 健(安徽工程大学机电学院，芜湖，241000) 摘 要本次设计产品的为苯酐。目前生产工艺有萘或邻二甲苯以及萘和邻二甲苯混合原料的固定床氧化工艺和萘流化床氧化工艺。该设计的苯酐生产艺是以邻二甲苯为原料，经气化后与空气混合进入反应器催化氧化生成粗苯酐，气体粗苯酐在切换冷凝器冷凝收集，再经预处理后送入精馏塔精馏，得到产品。该工艺流程主要包括氧化反应、冷凝回收、精馏、产品包装和废液尾气处理。工艺设计内容包括：工艺流程设计、物料衡算、能量衡算、精馏塔设计工艺计算以及生产装置中其他设备的选择等。图纸包括生产流程图、工厂布置图以及塔设备结构图。关键词：邻二甲苯、苯酐、工艺设计Process design for producing 40000 tons of PA per yearLi Jian（Anhui Polytechnic university of Electrical and Mechanical College,Wuhu,Zip:241000）Abstract The design of the product is phthalic anhydride. The current PA design is Fixed Fluidized Bed Design based on anhydride or OX,as well as the mixture of anhydrideand OX,and the naphthalene fluidized bed.This thesis is intended to take the O-xylene as its raw materials and get it gasified,and then enter catalytic reactor,mixing with air,to catalyze phthalic anhydride. The unrefined PA gas would first be gathered in condenser,finally be refined in fractionating tower after process includes oxidation,condensation recovery,distillation,packaging and waste gas treatment.Process design include:process design, material balance,energy balance,chemical engineering process calculations and other equipment, plant selection.Blueprints include production flow chart,factory layout plan,the blueprint of structure of the rectifier. Key words: O-xylene, PA, process design目 录引 言 ............................................................................................................................................6第 1 章 概述 .........................................................
