文档介绍：年产15万吨乙苯工艺设计
年产15万吨乙苯工艺设计
摘要:苯和乙苯是化工行业的基本原料,苯—乙苯—二乙苯不能形成恒沸点的混合物,所以乙苯精制可直接采用传统的精馏法制备高纯度(98%)的乙苯溶液,本设计进行苯—乙苯—二乙苯的分离,、高11米的浮阀精馏塔,选用效率较高、结构简单、加工方便的单溢流方式、并用了弓形降液盘蒸馏是分离液体混合物最早实现工业化的典型单元操作. 蒸馏分离的依据是通过加热液体混合物建立两相体系,利用溶液中个组分挥发度的差异实现组分分离或提纯的目的。正是从分利用这些特点才能很好的把液液混合物很好的分离开来。
关键词:乙苯精制;苯;二乙苯;蒸馏;浮阀精馏塔
The process design of 150kt/a ethyl benzene refining process after the process
Abstract: benzene and ethyl benzene is the basic materials of chemical industry, the mixture of benzene, ethylbenzene can't form a constant boiling, so can be directly used traditional distillation of the preparation of high purity ethyl benzene solution, the design of the separation of benzene, ethylbenzene, the rectification tower is meters and 11 meters in diameter, with high efficiency, simple structure, convenient processing single relief way, and used a bow down tray distillation is the separation of liquid mixtures on the typical unit operations of realizing the industrialization of the earliest. The basis of a distillation separation was established by heating the liquid mixture two-phase system, using the volatility of ponent in the solution differences between the realization of the aim ponent separation and is from points and take advantage of these characteristics can be very good good separation of the mixture of the liquid.
Keywords: ethyl benzene refined;benzene;diethyl benzene ;distillation ;float valve column ;
目录
摘要………………………………………………………………………………Ⅰ
Abstract …………………………………………………………………………Ⅱ
引言………………………………………………………………………………1
第一章综述………………………………………………………………………2
前言……………………………………………………………………2
粗乙苯总概述……………………………………………………………2
物化性质………………………………………………………………3
市场供需情况……………………………………………………… 3
粗乙苯生产工艺技术……………………………………………………4
分子筛气相法…………………………………………………………4
以为催化剂生产乙苯的工艺……………………5
催化精馏制乙苯工艺…………………………………………………5
改良的法………………………………………………………5
国内利用干气中的乙烯制乙苯工艺技术……………………………6
  干气的分离技术………………………………………………………7
深冷分