化工进展
化工進展
화공진전
CHEMICAL INDUSTRY AND ENGINEERING PROGRESS
2012年
6期
1220-1223,1243
,共5页
李春利%张明禄%方静%胡雨奇
李春利%張明祿%方靜%鬍雨奇
리춘리%장명록%방정%호우기
乙二醇单甲醚%共沸精馏%乙酸异丙酯%间歇精馏
乙二醇單甲醚%共沸精餾%乙痠異丙酯%間歇精餾
을이순단갑미%공비정류%을산이병지%간헐정류
2-methoxyethanol%azeotropic distillation%isopropyl acetate%batch distillation
通过绘制乙二醇单甲醚-水-共沸剂的简捷剩余曲线,提出了以乙酸异丙酯作为间歇共沸精馏法分离乙二醇单甲醚-水物系的共沸剂。然后完成剩余曲线数据的测定实验,根据实验数据绘制乙二醇单甲醚-水-乙酸异丙酯三元物系的剩余曲线图,确定了乙二醇单甲醚-水共沸物系的分离工艺。并通过实验研究了共沸剂加入量对乙二醇单甲醚回收率的影响,从而确定了适宜的共沸剂配比：当共沸剂与原料中水的质量比为2～2.5时,乙二醇单甲醚的一次性收率在90%以上。
通過繪製乙二醇單甲醚-水-共沸劑的簡捷剩餘麯線,提齣瞭以乙痠異丙酯作為間歇共沸精餾法分離乙二醇單甲醚-水物繫的共沸劑。然後完成剩餘麯線數據的測定實驗,根據實驗數據繪製乙二醇單甲醚-水-乙痠異丙酯三元物繫的剩餘麯線圖,確定瞭乙二醇單甲醚-水共沸物繫的分離工藝。併通過實驗研究瞭共沸劑加入量對乙二醇單甲醚迴收率的影響,從而確定瞭適宜的共沸劑配比：噹共沸劑與原料中水的質量比為2～2.5時,乙二醇單甲醚的一次性收率在90%以上。
통과회제을이순단갑미-수-공비제적간첩잉여곡선,제출료이을산이병지작위간헐공비정류법분리을이순단갑미-수물계적공비제。연후완성잉여곡선수거적측정실험,근거실험수거회제을이순단갑미-수-을산이병지삼원물계적잉여곡선도,학정료을이순단갑미-수공비물계적분리공예。병통과실험연구료공비제가입량대을이순단갑미회수솔적영향,종이학정료괄의적공비제배비：당공비제여원료중수적질량비위2～2.5시,을이순단갑미적일차성수솔재90%이상。
According to the short-cut residue curves for the ternary system of 2-methoxyethanol-waterentrainers, isopropyl acetate was chosen as an entrainer for the separation of 2-methoxyethanol-water mixture by batch azeotropic distillation.Then the residue curve determination experiment was completed and the residue curves for the ternary system of 2-methoxyethanol-water-isopropyl acetate were plotted based on the experiment data.A batch azeotropic distillation process was proposed for the separation of 2-methoxyethanol-water mixture.The effect of the amount of entrainer on the yield of 2-methoxyethanol was studied and the proper ratio of entrainer to feed was obtained.When w（isopropyl acetate）︰w（water）=2～2.5,especially,one-time yield of 2-methoxyethanol was more than 90%.
