化工外文文獻(xiàn)翻譯--用混合溶劑萃取精餾分離乙腈-乙酸乙酯-預(yù)覽頁
【正文】 4 954 224,19900904. [8] Paul Langston, Nidal Hilal, Stephen Shingfield, Simon Webb. Simulation and optimisation of extractive distillation with water as solvent. Chemical Engineering and Processing: Process Intensification. 2020,44(3):345351 [9] Li Chunli, Sun Jingjing, Lv Jianhua. Study on mixed solvent for separating ethanol and water by using batch extractive distillation. Chemical Engineering ,39(10):2933 [10] Li Chunli,Li Lijie,Fang Jing. Separation of ethyl acetateethanol by batch extractive distillation with mixed solvent. Petrochemical ,39(11):12321235 [11] Gu zhenggui, Zhi Huizhen， Ma Zhengfei. Study on posite extractive distillation of ethyl acetateethanolwater. Comput Appl Chem,2020,22(6):466468 [12] Lang P,Lelks Z, Moszkowicz Extractive Distillation: The Process and the Operational Policies. Chemical Engineering Science,1998,53(7):13311348. 中文翻譯： 用混合溶劑萃取精餾分離乙腈 乙酸乙酯 摘要 計(jì)算機(jī)輔助分子設(shè)計(jì)（ CAMD）方法是把在這項(xiàng)工作中選擇萃取溶劑。 Mixed solvents。Separation of acetonitrileethyl acetate by extractive distillation with mixed solvent Li Chunli1, Zong Lili2 and Fang Jing School of Chemical Engineering, Hebei University of Technology, Tianjin, 30013 Email:, Tel: +8602260202246 Abstract Computeraided molecular design (CAMD) approach was bring in this work for selecting extractive solvents. The separation of acetonitrileethyl acetate Azeotropic system was carried out through a batch extractive distillation processes with N,Ndimethylformamide(DMF), glycol(EG) and DMFEG mixture as solvents separately. The effects of different operating conditions were studied, solvents, ratio of mixed solvent, solvent flow rate and reflux ratio were all included. It was found that the mixed solvent DMFEG showed better separation effect than the single solvent. The best proportion of the mixed solvent was 3:7 ( the quality of DMF and EG )。 Batch extractive distillation。guezDonis, V. Gerbaud. Heterogeneous extractive batch distillation of chloroform–methanol–water: Feasibility and experiments. Chemical Engineering Science. 2020,63(1):7894 [5] Jing FANG, Chunli LI, Honghai WANG, Lijun SUN. A Quasisteadystate Model for Numerical Simulation of Batch Extractive Distillation Original Research Article. Chinese Journal of Chemical Engineering. 2020,18(1): 4347 [6] Estela Lladosa, Juan B. Mont243。 結(jié)果發(fā)現(xiàn)，混合溶劑 dmfeg 表現(xiàn)出更好的分離效果比單一溶劑。因此，一些公司要把他們當(dāng)作廢物，這不僅造成嚴(yán)重的資源浪費(fèi)和經(jīng)濟(jì)，而且還污染環(huán)境。近年來，應(yīng)用萃取精餾 [46]對近沸點(diǎn)混合物的分離已被廣泛接受商業(yè)化在傳統(tǒng)的蒸餾，也可能是可行的但有大量的柱投資。 本文用乙腈的混合物 –乙酸乙酯的分離研究間歇萃取精餾，萃取溶劑的混合溶劑。 2． 乙腈的 –乙酸乙酯混合物分離夾帶劑的選擇萃取精餾是普遍適用于近沸點(diǎn)混合物的分離，由傳統(tǒng)的精餾分離困難。 候選作為萃取溶劑的圖原理與基團(tuán)貢獻(xiàn)方法的選擇結(jié)合計(jì)算機(jī)輔助分子設(shè)計(jì)。在溶劑篩選階段，用于基本的分子庫的分子直接。 3 的萃取精餾實(shí)驗(yàn)用品 材料 乙腈 –乙酸乙酯原料成分的質(zhì)量分?jǐn)?shù)為 （乙基醋酸乙烯 /乙腈）。玻璃柱總高度 ，內(nèi)部直徑30mm。溶劑是飼料從上節(jié)柱。 4． 結(jié)果與討論 為了說明新的溶劑效應(yīng)對乙腈 –乙酸乙酯，我們做的一些經(jīng)驗(yàn)研究了工藝參數(shù)，得到優(yōu)化的操作條件。當(dāng)溶劑DMF 或如只在頂級(jí)產(chǎn)品，乙酸乙酯的濃度是 %和 %，但當(dāng)使用 N（ DMF）： n（ EG）＝ 1:1 作溶劑， 濃度增加到 %，效果明顯優(yōu)于單一溶劑。同樣，要做到這一點(diǎn)，一定條件下保持：溶劑流速為 15ml/min，溶劑比（質(zhì)量溶劑對產(chǎn)品比）為 4，回流比為 1。根據(jù)這些數(shù)據(jù)，我們認(rèn)為 DMF／乙二醇混合溶劑 = 3 / 7 是最好的。另一方面，超過回流比會(huì)帶來一些問題，如延長運(yùn)行時(shí)間，在塔的底部增加所需的能量，影響生產(chǎn)效率等。通過實(shí)驗(yàn)說明了該溶劑的效果。溶劑手冊 [M].。天津。應(yīng)用化學(xué)。異構(gòu)的間歇萃取精餾的氯仿甲醇水 ––：可行性和實(shí)驗(yàn)。中國化學(xué)工程學(xué)報(bào)。化學(xué)工程與工藝：過程強(qiáng)化。仿真和優(yōu)化水萃取精餾溶劑。中國化學(xué)工程。 2020,39（ 11）： 12321235 【 11】顧正規(guī)，智惠貞，馬正飛。
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