《年处理25万吨轻苯加氢精制车间初步设计终稿》由会员分享，可在线阅读，更多相关《年处理25万吨轻苯加氢精制车间初步设计终稿（92页珍藏版）》请在金锄头文库上搜索。
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
2、氢 精馏 苯IAbstract 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, inte
3、rnational 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
4、 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 benze
5、ne 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 distillationII目 录摘要IAbstractII第1章 绪论11.1设计的目的和意义1
6、1.1.1毕业设计的目的和意义11.1.2本设计的目的和意义11.2产品的组成和成分及物性参数11.3产品的质量指标 价格 供需关系31.4设计地点，气候参数5第2章 工艺论证62.1国内外工艺流线论证62.1.1粗苯加氢精制原理62.1.2粗苯加氢精制工艺62.1.3粗苯加氢精制工艺特点102.2主要设备论证 类型的确定122.2.1填料萃取塔122.2.2筛板萃取塔122.2.3脉冲筛板萃取塔132.2.4往复筛板萃取塔132.2.5转盘萃取塔及偏心转盘萃取塔142.3萃取剂选择的依据142.4结论15第3章 工艺详述163.1本设计选择的工艺163.1.1工艺原理163.1.2工艺流程1
7、63.2工艺参数列表17第4章 工艺计算194.1总物料衡算194.2纯苯塔的设计计算204.2.1计算数据204.2.2塔的物料衡算234.2.3气液负荷计算284.2.4精馏塔塔体尺寸计算334.2.5塔的工艺结构尺寸的设计与计算344.2.6塔板布置及浮阀数目与排列364.2.7塔板流动性能校核384.2.8塔板负荷性能图434.2.10纯苯塔热量衡算484.2.11塔的机械设计514.3设备一览表53第5章 设备布置575.1设备布置原则575.1.1满足生产工艺要求575.1.2符合经济原则575.1.3符合安全生产要求575.1.4良好的生产操作585.1.5便于安装与检修585.
8、2几种设备布置的具体方式585.2.1塔的布置585.2.2反应器的布置595.2.3冷换设备的布置59第6章 非工艺部分616.1车间布置（土建要求）616.1.1厂址选择的基本原则616.1.2拟定选厂指标626.1.3总平面布置的要求636.2供水656.2.1循环冷却水系统656.2.2新鲜冷却水系统656.2.3软水配置656.2.4生活饮用水系统666.2.5排水系统666.3供电666.4采暖通风666.5劳动定员66第7章 经济效益分析687.1投资估算687.1.1建设费用687.1.2设备费用697.1.3转让、培训及试车费用727.1.4不可预见费727.1.5固定资产投
9、资737.1.6建设期利息（一年计)737.1.7固定资产总投资737.1.8铺底流动资金737.1.9项目总投资737.2年总成本核算747.2.1单耗747.2.2能耗747.2.3加工费757.2.4设备维护折旧费757.2.5车间成本767.2.6工厂管理费767.2.7工厂成本767.2.8销售费用777.2.9销售成本777.2.10年销售税金（按17%计税，考虑抵扣项则为5-10%）777.2.11年销售利润（毛利）777.2.12年所得税777.2.13年纯利润777.3经济效益分析787.3.1投资回收期（静态/年）787.3.2投资利润率787.3.3投资利税率78结论79
10、致谢80参考文献81Xcatalogue窗体顶端窗体底端Chapter 1 Introduction11.1 The purpose and significance of design11.1.1The purpose and significance of graduation11.1.2The purpose and significance of this design11.2 Composition and physical parameters of the product11.3 Quality indicators of supply and demand price of t
11、he product31.4 Design Location Climate parameters5Chapter 2 Technology Demonstration62.1 Domestic and process streams Demonstration62.1.1 Crude benzol hydrogenation principle62.1.2 Crude benzene hydrogenation process62.1.3 Crude benzol hydrogenation process characteristics102.2 Major equipment demon
12、stration Determination of the type122.2.1 Packed extraction column122.2.2 Perforated-plate extraction tower122.2.3 Pulsed sieve plate extraction column132.2.4 Reciprocating plate extraction column132.2.5 Rotating disc contactor (RDC) and eccentric rotating disc contactor (ARDC)142.3 Based extractant
13、 selected142.4 The conclusion15Chapter 3 Described in detail Process163.1 This design choice process163.1.1 Process principles163.1.2 The process163.2 The process parameter list17Chapter 4 Technological Calculation194.1Total material balance194.2Design calculations of pure benzene column204.2.1 Calc
14、ulate data204.2.2 Material balance of tower234.2.3 Load Calculation of Gas-liquid 284.2.4 Distillation tower Size Calculation334.2.5 Design and calculation The process of the tower structure size344.2.6 Tray arrangement and the number of float valve arrangement364.2.7 Flow tray performance check384.2.8 Tray load performance chart434.2.10 The tower heat balance of pure benzene 484.2.11 Tower of mechanical design514.3 Equipment List53Chapter 5 Equipment Layout575.1Principles of arrangement575.1.1 To meet the production process requirements575.1.2 In line with the principles of economy575.1.3
