CAJ | 학술논문

使用Aspen Plus，首先对乙醇-水萃取精馏过程的7种萃取剂的分离效能进行了模拟比较，结果显示：丙三醇> DMSO >乙二醇> DMF >糠醛>苯甲醛> NMP；接着，以丙三醇为萃取剂，设计了最优的萃取精馏工艺流程，并确定了萃取精馏过程中萃取精馏塔（理论板数：16，回流比：2，原料进料位置：12，萃取剂的进料量：230 kmol/hr和进料位置：4）和溶剂回收塔（理论板数：7，进料位置：3和回流比：3）的最佳工艺条件；最后，本文还利用热量集成的方法对系统的废热进行了回收利用，不但节约能耗3262.72 kW，还顺产1 MPa低压蒸汽127 kmol/hr。本研究为乙醇-水萃取精馏分离工艺的工业化提供了理论依据和设计参数。
사용Aspen Plus，수선대을순-수췌취정류과정적7충췌취제적분리효능진행료모의비교，결과현시：병삼순> DMSO >을이순> DMF >강철>분갑철> NMP；접착，이병삼순위췌취제，설계료최우적췌취정류공예류정，병학정료췌취정류과정중췌취정류탑（이론판수：16，회류비：2，원료진료위치：12，췌취제적진료량：230 kmol/hr화진료위치：4）화용제회수탑（이론판수：7，진료위치：3화회류비：3）적최가공예조건；최후，본문환이용열량집성적방법대계통적폐열진행료회수이용，불단절약능모3262.72 kW，환순산1 MPa저압증기127 kmol/hr。본연구위을순-수췌취정류분리공예적공업화제공료이론의거화설계삼수。
Firstly, the separation efficiency of seven different extractants for the ethanol + water extractive distillation process was evaluated using Aspen plus process simulation software. The results showed: glycerol > DMSO > DMF > furfural glycol > benzaldehyde > NMP; Secondly, glycerol was used as extractant and the best separation process was designed for the ethanol + water extractive distillation. Moreover, the optional process conditions were determined for the extractive distillation column (including theoretical plate number (16), reflux ratio (2.0), feed stage (12), solvent amount (230kmol/hr) and solvent feed stage (4)) and solvent recovery column (including theoretical plate number (7), feed stage (3) and reflux ration (3.0)). Finally, the system waste heat was recycled using heat integration method: not only save energy consumption 3263.72 kW, but also produce low pressure (1 MPa) steam 127 kmol/hr. These works can provide a theoretical basis and design parameters for the ethanol + water extractive distillation separation process.