30万吨年乙二醇生产工艺初步设计毕业设计说明书.docx

学位论文独创性声明、学位论文知识产权权属声明 毕业设计（论文） PAGE PAGE 1 PAGE PAGE 1 题 目 30万吨/年乙二醇生产工艺初步设计 系 （院） 化工与安全学院 专 业 能源化学工程 班 级 学生姓名 学 号 指导教师 职 称 二〇二二年六月二十二日 PAGE PAGE IV 30万吨/年乙二醇生产工艺初步设计 摘 要 乙二醇，别名甘醇，英文名Ethylene Glycol，简称EG，是最简单的脂肪族二元醇，外观为无色透明粘稠液体，作为一种重要的基础石油化工原料，乙二醇可以衍生出100多种化工产品和化学品，主要用于生产聚酯纤维、防冻剂、不饱和聚酯树脂、润滑剂、增塑剂、非离子表面活性剂等，以及用于炸药、涂料、油墨等行业，此外，还可用于生产特种溶剂乙二醇醚等，用途十分广泛。 同时一般生产乙二醇主要有直接合成法和间接合成法，但是直接合成法反应条件比较苛刻，所以目前间接合成法较为理想。尤其是间接合成法中的草酸酯气相加氢法，其采用固化床或流化床，可防止加工过程中催化剂的损坏，是当前唯一实现工业化的煤制乙二醇生产方法。使用煤制乙二醇间接合成法，即草酸酯法进行30万吨/年乙二醇进行初步设计，选择所需的原料，了解并选择合适的催化剂（要做到绿色污染程度低、毒性小、选择性高、可重复利用）。最终设计出能达到30万吨/年乙二醇的生产工艺设计方案。 关键词：乙二醇；间接合成法；煤制乙二醇；工艺设计 Preliminary design of 300,000 tons/year ethylene glycol production process Abstract Ethylene Glycol, alias Ethylene Glycol, English name Ethylene Glycol, abbreviated as EG, is the simplest aliphatic dialcohol, appearance is colorless transparent viscous liquid, as an important basic petrochemical raw material, Ethylene Glycol can be derived from more than 100 kinds of chemical products and chemicals. Mainly used in the production of polyester fiber, antifreeze, unsaturated polyester resin, lubricants, plasticizers, non-ionic surfactants, and used in explosives, coatings, ink and other industries, in addition, can also be used for the production of special solvents such as ethylene glycol ether, is very widely used. At the same time, the general production of ethylene glycol mainly direct synthesis method and indirect synthesis method, but the direct synthesis method reaction conditions are more harsh, so the indirect synthesis method is ideal. Especially the gas phase hydrogenation of oxalate in the indirect synthesis method, which adopts curing bed or fluidized bed to prevent the damage of catalyst in the process, is the only industrialized coal-based glycol production method at present. The indirect synthesis method of ethylene glycol from coal, that is, oxalate method, was used for the preliminary design of 300,000 tons/year