3万吨每粗苯精制工艺设计.doc

毕 业 设 计 [论 文] 题 目： 3万吨每年粗苯精制工艺设计 化学与材料工程学院 专 业： 煤炭深加工与利用 姓 名： 学 号： 指导老师： 完成时间： 2013年5月27日  设计说明 粗苯精制工艺，是将粗苯经化学加工转换为气体，液体和固体产物，并将气体和液体产物进一步加工成一系列化学产品的过程。目前粗苯精制工艺过程有：酸洗精制法和加氢精制法。酸洗精制法工艺简单，该法在我国焦化厂得到广泛应用。加氢精制法工艺复杂，对设备材质和自动控制要求高，该法在我国也得到一定的应用。 本设计采用酸洗精制对粗苯精制工艺进行了设计计算，着重设计计算了粗苯精制过程的关键设备。主要包括物料衡算，主要塔设备的工艺尺寸计算，并对关键设备进行了机械强度校核。 通过物料衡算得到苯每小时产量为4.17 t/h；按清晰分割计算得：轻苯进料量为5.796 t/h；酸洗反应器进料量为5.723 t/h；吹苯塔进料量为5.715 t/h；按非清晰分割计算得：纯苯塔进料量为5.4863 t/h甲苯塔进料量为1.3125 t/h；二甲苯塔进料量为0.5302 t/h。通过对关键设备工艺尺寸计算得到：吹苯塔塔高H=27.45m；纯苯塔塔高为17.966m，塔径为1.1m。通过对关键设备机械强度校核得到：纯苯塔质量载荷为7942.18Kg；风载荷：1-1截面为84503.059 N·m。 关键字：粗苯精制Design specification Crude benzol refining process, is the chemical processing of crude benzol is converted into a gas, liquid and solid products, and the gas and liquid product is further processed into a series of chemical products . Crude Benzol currently refining process are: Pickling and refined method of hydrogenation. Pickling refined method of simple, but there are liquid waste. The law in Chinas coke plant is widely used. Hydrogenation process of complex, material and equipment for automatic control requirements. The law in China has been applied. This design uses pickling crude benzol refining process of refining a design, the focus on design and calculation of the process of refining crude benzol key equipment. Including material balance, the main tower of the size of equipment, and key equipment to check the mechanical strength. Get through the material balance for the production of benzene 4.17 per hour; Calculated in accordance with a clear division: benzene into the light feed traffic to 5.796; pickling reactor feed traffic to 5.723; benzene tower blown the feed traffic to 5.715; On non-clear segmentation in the calculation: Refining benzene tower into the feed traffic to 5.4863 toluene tap into feed traffic to 1.3125; xylene