Energy-saving quaternary extractive distillation processes with single- or double-dividing-wall column for separation of acetone/methanol/butanone/tert-butyl alcohol

被引：29
|
作者：
Shi, Xiaojing [1 ]
Zhao, Xiaoxiao [1 ]
Zhang, Zhishan [1 ]
Li, Min [1 ]
Gao, Jun [1 ]
机构：
[1] Shandong Univ Sci & Technol, Coll Chem & Biol Engn, Qingdao, Peoples R China
来源：
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION | 2020年 / 153卷
基金：
中国国家自然科学基金;
关键词：
Extractive distillation; Dividing-wall column; Energy-saving; Multi-azeotropic compound; PRESSURE-SWING DISTILLATION; MIXED ENTRAINER; TERNARY MIXTURE; IONIC LIQUID; DESIGN;
D O I：
10.1016/j.cep.2020.107999
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
This article proposes two energy-saving extractive distillation configurations with single- or double-dividing-wall column, based on a conventional four-column extractive distillation process -CFC-ED, to efficiently separate a quaternary compound of acetone/methanol/butanone/tert-butyl alcohol with chlorobenzene as a solvent. One is composed of two single-dividing-wall extractive distillation columns-SDWCs-ED; the other consists of an extractive distillation column and double-dividing-wall extractive distillation column-DDWC-ED. The parametric optimization is carried out with the minimum total annual cost (TAC) as a goal and adopts a sequential iterative procedure. The comparison with the CFC-ED process shows that the SDWCs-ED process can reduce the TAC by 12.50 % and CO2 emission by 24.23 % while the DDWC-ED process can save the TAC by 11.97 % and CO2 emission by 14.43 %.
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页数：15
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