Selection of solvents for extractive distillation（Ⅱ）Comprehensive fuzzy evaluation model

SONG Haihua; ZHANG Xuegang; FENG Guohong

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Selection of solvents for extractive distillation（Ⅱ）Comprehensive fuzzy evaluation model

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- Selection of solvents for extractive distillation（Ⅱ）Comprehensive fuzzy evaluation model
- CIESC Journal Issue 8, Pages: 2016-2020(2007)
- 作者机构：
  
  天津大学化学工程研究所
- 作者简介：
- 基金信息：
- DOI：
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- Online First：05 August 2007，
  
  Published：05 August 2007
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SONG Haihua, ZHANG Xuegang, FENG Guohong. Selection of solvents for extractive distillation（Ⅱ）Comprehensive fuzzy evaluation model[J]. CIESC Journal, 2007, (8): 2016-2020.
DOI：

SONG Haihua, ZHANG Xuegang, FENG Guohong. Selection of solvents for extractive distillation（Ⅱ）Comprehensive fuzzy evaluation model[J]. CIESC Journal, 2007, (8): 2016-2020. DOI：

摘要

选择萃取精馏的溶剂要考虑多方面不同的因素，而且对这些因素的评价常常具有模糊的特点。本文提出一个模糊综合评判模型用于萃取精馏溶剂的选择。首先确定影响萃取精馏溶剂性质的各个因素对于各评判等级的隶属度，并得到模糊矩阵R;然后确定各目标变量的权重分配集A;最后给出全面考虑各方面因素的综合评判结果，对候选的萃取精馏溶剂进行优劣排序。通过对两个萃取精馏系统进行溶剂选择的实例证明，采用模糊综合评判方法进行溶剂筛选的方法是成功的，具有良好的工业应用前景。

Abstract

In selecting the optimum solvents of extractive distillation

multiple factors should be considered and the evaluation of these factors are often of fuzzy characteristics.In this paper a comprehensive fuzzy evaluation (CFE) model was used for choosing the solvents.At first the membership functions of factors influencing the solvent performance versus the judgment grades were determined and the fuzzy evaluation matrix

was given.Then the weight-distributed sets

were determined by multi-experts-scoring.At last

the comprehensive evaluation results were obtained based on all factors considered

and the candidate solvents were queued in the order of superiority.The CFE method was used to select the solvents of two extractive distillation processes for separating benzene/n-heptane and ethyl acetate/ethanol mixtures respectively

and the method proved to be successful with perspective industrial applications.

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