Abstract: A new generalized algorithm for design calculation of various kinds of complex distillation columns(with multiple feeds, vapor and liquid phase side withdrawals and intermediate heat exchangers) has been developed. Based on specified independent variables: conditions of feeds, yields of light and heavy key components, yield and concentration of specified component in side-cut product, etc., a set of optimum design variables (reflux ratio, number of equilibrium stages required, feeds and sidewithdrawals locations, etc. )were determined by optimization technique. This new algorithm as coupled with the SHBWR or PR model for vapor-liquid equilibrium and enthalpy calculations, has been tested on five-light hydrocarbon complex distillation columns(including three field operating columns), with quite satisfactory results.

摘要： 本文建立了用于复杂精馏塔(可有多股进料、汽、液相侧线出料和中间换热器的塔)的设计型算法.本算法可根据指定的独立变量值,通过优化计算确定能满足各项设计指标的一组优化设计参数值.本算法应用SHBWR(BWRS)及PR汽-液平衡和焓模型对金山乙烯装置中的典型塔等进行了考核,取得满意的结果.