共查询到19条相似文献,搜索用时 78 毫秒
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用改进的Rose釜结合等温等压控制装置,测定了乙醇-氯仿-苯三元体系在55℃及60℃的等温汽液平衡数据,并用Wilson方程由二元参数推算了三元体系的数据,取得了满意的结果。 相似文献
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苯—正丙醇—氯化锂体系汽液平衡 总被引:1,自引:0,他引:1
本文报导了在760×1.333×10~2Pa压力下溶有不同浓度氯化锂的苯-正丙醇体系汽液平衡的实验数据。以拟二元体系处理溶盐三元体系,并用Herington方法对无盐及溶盐体系的实验数据作了热力学校验。用Van Laar方程关联溶盐体系,得到了较满意的结果。 相似文献
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亚硝酸乙酯-乙醇-草酸二乙酯三元体系汽液平衡 总被引:2,自引:1,他引:1
建立了测定低压下汽液平衡的实验装置,测定了20~40℃下亚硝酸乙酯-乙醇-草酸二乙酯的汽液平衡数据。用NRTL方程关联实验数据,得到较满意的结果 相似文献
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R152a(ODP=0,GWP=124)对环境友好,热力性能完善,而吸收剂三乙二醇二甲醚(DMETrEG)沸点较高,毒性较弱,对较多制冷剂都有很好的溶解能力。因此,R152a与DMETrEG的二元混合物是一种具有潜在应用价值的吸收制冷工质对。采用气液双循环法,实验研究了R152a+DMETrEG在293.15~353.15 K温度范围内的汽液相平衡特性;分别采用NRTL模型和Wilson模型对测得的汽液相平衡(VLE)数据关联对比。实验结果与关联结果具有良好的一致性,NRTL模型拟合计算结果与实验结果的平均相对偏差为1.80%,而Wilson模型拟合计算结果与实验结果的平均相对偏差为1.83%。当混合溶液中R152a摩尔分数大于0.8时,R152a活度系数接近1,混合溶液可近似视为理想溶液。 相似文献
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Determination of Vapor Pressures for Binary and Ternary Mixtures Containing Ionic Liquid 1-propyl-3-methylimidazolium Bromide 总被引:1,自引:0,他引:1 下载免费PDF全文
Vapor pressure values of binary systems water + ethanol, water + ionic liquid 1-propyl-3-methylimidazolium bromide ([PMIM][Br]), ethanol + [PMIM][Br] and ternary system water + ethanol + [PMIM][Br] at different temperatures were measured by using a modified boiling point method in various concentrations of (16.66%, 33.7%), (17.4%, 33.9%) and (16.5%, 32%) mass percent of ionic liquid, respectively. The experimental vapor pressures of solvent were well correlated by the Antoine-type equation, and the overall average absolute deviation (AAD) was found to be 0.39%. The experimental results for mixtures containing ionic liquid indicate that the vapor pressure of the solvents can be decreased noticeably to different extent due to the affinity difference between ionic liquid and solvent, which is similar to the salt effect of common inorganic salts. As a result, ionic liquid may find industrial applications in extractive distillations for the system with a low separation factor or even for an azeotropic mixture. 相似文献
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Vapor pressure values of binary systems water + ethanol, water + ionic liquid 1-propyl-3- methylimidazolium bromide ([PMIM] [Br]), ethanol + [PMIM] [Br] and ternary system water + ethanol + [PMIM] [Br] at different temperatures were measured by using a modified boiling point method in various concentrations of (16.66%, 33.7%), (17.4%, 33.9%) and (16.5%, 32%) mass percent of ionic liquid, respectively. The experimental vapor pressures of solvent were well correlated by the Antoine-type equation, and the overall average absolute deviation (AAD) was found to be 0.39%. The experimental results for mixtures containing ionic liquid indicate that the vapor pressure of the solvents can be decreased noticeably to different extent due to the affinity difference between ionic liquid and solvent, which is similar to the salt effect of common inorganic salts. As a result, ionic liquid may find industrial applications in extractive distillations for the system with a low separation factor or even for an azeotropic mixture. 相似文献
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二氧化碳与乙醇和异丙醇的二元汽液平衡 总被引:1,自引:1,他引:1
应用汽液双循环高压相平衡装置,测定了二氧化碳-乙醇和二氧化碳-异丙醇二元混合物分别在303.15K,310.15K和329.15K,压力范围为1.78~10.04MPa下的汽液相平衡数据。用DDLC-SRK方程关联两个二元体系的汽液相平衡数据,计算值与实验值吻合良好。 相似文献
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