年产6.8万吨异丙醇装置丙烯精制工段工艺设计----脱乙烷塔部分.docVIP

年产9.8万吨异丙醇装置丙烯精制工段工艺设计 ----脱乙烷塔部分 摘 要 丙烯是石油化工的原料之一，在原油加工中具有重要作用。由裂解气净化与分离工段的丙烯精馏塔分离出的丙烯除了用于生产聚丙烯外，还大量地作为生产丙烯腈，丁醇，辛醇，环氧丙烷，异丙醇等产品的主要原料。为了更好的提高生产能力，本着投资少，能耗低，效益高的想法，本设计根据设计任务书中确定的生产任务进行的，塔设备一般分为级间接触式和连续接触式两大类。前者的代表是板式塔，后者的代表则为填料塔，在各种塔型中，当前应用最广泛的是筛板塔与浮阀塔。 关键词：丙烯；脱乙烷塔；热量衡算。物料衡算；丙烯精馏塔； Annual output of 98,000 tons refined isopropyl alcohol propylene Process Design Section --- Deethanizing Tower Abstract Title I design production capacity is 98,000 tons annual output of isopropyl alcohol, started a period of 8,000 hours / year, material composition of ethane, propylene, propane, butane, propylene is 74.1% in material, boiling point of each component and its relative volatility differences of degree of separation of each component. The design uses a multi-component distillation, the process by decreasing volatility program, process design the two towers that is, first isolated by de-ethane ethane tower, tower distillation top separated from the ethane , top of the propylene tower geit that propylene, the purity of 93.5%, and propylene as the product of a device to provide raw materials production and isopropanol, the bottom of the propane can be sold as a commodity or as fires, oil. In turn the design of the material balance, heat balance, the tower structure of the relevant process calculation, the calculation of heat transfer equipment and ancillary equipment selection, and the data were plotted according to the design automation flow, selection of equipment in accordance with terms of the main site practical, taking into account the requirements of process control and economic rationality. Key words: de-ethane tower, propylene distillation column, material balance, heat balance. 目 录 要 I Abstract II 1 概述 1 1.1 丙烯的性质及用途 1 1.2 丙烯的来源及丙烯生产在化工生产中的地位 1 1.3 丙烯精制生产方法的确定 1 1.4 丙烯精制工艺流程的叙述 2 2 丙烯精制装置的物料衡算 3 2.1 脱乙烷塔的物料衡算 3 2.1.1 脱乙烷塔的进料量及进料组成 3 2.1.2 脱乙烷塔塔顶及塔底的流量及组成 3 2.1.3 脱乙烷塔的物料平衡 5 2.2 丙烯塔的物料衡算 5 2.2.1 丙烯塔的进料量及进料组成 5 2.2.2 丙烯塔塔顶及塔底的流量及组成 6 2.2.3 丙烯塔的物料平衡 7 3