毕业设计（论文）-年处25万吨轻苯加氢精制车间初步设计.doc

PAGE \* MERGEFORMAT PAGE \* MERGEFORMAT 1摘要 轻苯作为中间体产品，本身用途极为有限，仅作为溶剂使用，但是精制后的焦化苯、焦化甲苯、焦化二甲苯等产品，是有机化工、医药和农药等的重要原料，在国内、国际上都有很好的市场。本设计总结了国内外的苯精制工艺，列出了各工艺的优缺点，选择的溶剂萃取低温加氢工艺的加氢温度、压力较低，产品质量好，已被广泛用于石油重整油、高温裂解汽油、焦化粗苯为原料的加氢生产中。设计中对主要设备纯苯塔做了详细计算，对其他以及辅助设备进行了选型，同时绘制了平立面布置图、纯苯塔设备图、工艺流程图等附图，最后进行了简略的经济计算。 本设计的产品有纯苯、甲苯、二甲苯、非芳烃，其中最主要的产品是纯苯、甲苯和二甲苯。关键词 轻苯 加氢 精馏 苯 PAGE \* MERGEFORMAT PAGE \* MERGEFORMAT 1Abstract Light benzene as the intermediate products, their use is extremely limited, only used as the solvent, but the product after refining coking benzene, coking benzene, coking xylene, is an important raw material in organic chemical industry, medicine and pesticide, in the domestic, international have a very good market. The design summary of benzene refining process at home and abroad, lists the advantages and disadvantages of each process, hydrogenation temperature, pressure of solvent extraction of low-temperature hydrogenation process selection is low, good product quality, has been widely used for the hydrogenation of reformate oil production, pyrolysis gasoline, coking benzene as raw materials in. The design of the main equipment of pure benzene tower is calculated in detail. On the other, and the auxiliary equipment selection, and draw the layout and facade, pure benzene tower equipment, process flow diagram, figure, finally calculated simple economy. The design of the products are benzene, toluene, xylene, non aromatic hydrocarbons, the main products are benzene, toluene and xylene.Key words benzene hydrogenation distillation PAGE \* MERGEFORMAT PAGE \* MERGEFORMAT 1目 录TOC \o 1-3 \h \u HYPERLINK \l _Toc29254 摘要 PAGEREF _Toc29254 I HYPERLINK \l _Toc21697 Abstract PAGEREF _Toc21697 II HYPERLINK \l _Toc15796 第1章 绪论 PAGEREF _Toc15796 1 HYPERLINK \l _Toc2608 1.1设计的目的和意义 PAGEREF _Toc2608 1 HYPERLINK \l _Toc2097 1.1.1毕业设计的目的和意义 PAGEREF _Toc2097 1 HYPERLINK \l _Toc1919 1.1.2本设计的目的和意义 PAGEREF _Toc1919 1 HYPERLINK \l _Toc29331 1.2产品的组成和成分及物性参数 P