年产8万吨丁二烯生产工艺.docx

PAGE PAGE 43 摘要 丁二烯是一种重要的石油化工有机原料和合成橡胶单体，是石油炼制碳四馏分中最重要的组分之一，在石油化工烯烃中的地位仅次于乙烯和丙烯，其与苯乙烯发生共聚可生成各种常用的树脂，[]且用于生产1,4-丁二醇、已二氰、乙叉降冰片烯、已二胺等常用有机化工产品，用途十分地广泛。随着我国近几年对化工行业发展越发的大力支持，国内丁二烯的生产技术不断得到了良好改进和完善，已能长期满足市场供应需求。在丁二烯生产中，裂解馏分萃取精馏是最为常见的方式，基于溶剂的差异，丁二烯的主要生产方法主要可以分为乙腈法、二甲基甲酰胺法、丁二烯抽提联合工艺和N-甲基吡咯烷酮这4类[]。本次毕业设计参考某学术论文，采用乙腈法十级年产8万吨丁二烯生产工艺，在设计过程中设计对已知基础数据进行的物料衡算和能量衡算，并根据所得数据进行换热器和塔设备的选材与设计。此次设计通过查阅文献选择确定生产工艺，并制定了工艺流程图。此次毕业设计在结合理论知识和实际生产的基础上，尽力确保计算结果的合理性，寻求技术突破，为能够更有效的利用国家资源而奋斗 关键词：丁二烯；乙腈法；萃取精馏。 80,000 Tons of Butadiene Production Process Design Abstract Butadiene is an important petrochemical organic raw material and synthetic rubber monomer.［8］is one of the most important components in the four fractions of petroleum refining carbon.［8］is second only to petrochemical olefins. Ethylene and propylene,［8］copolymerizes with styrene to form various commonly used resins,［3］and is used to produce 1,4-butanediol, dicyandiamide, ethylidene norbornene, diamine, etc. Commonly used organic chemical products are widely used. With China's increasing support for the development of the chemical industry in recent years, the domestic butadiene production technology has been continuously improved and perfected, and has been able to meet market supply needs for a long time. In the production of butadiene, cracking fraction extraction and rectification is the most common method. Based on the difference in solvents, the main production methods of butadiene can be divided into acetonitrile method, dimethylformamide method, butadiene extraction combined Process and N-methylpyrrolidone these 4 categories.［5］This graduation design refers to an academic paper, adopts the acetonitrile method tenth grade annual production of 80,000 tons of butadiene production process, and designs the material balance and energy balance based on known basic data during the design process, and based on The data obtained are used for the selection and design of heat exchangers and tower equipment. This design selects the prod