已为您找到该学者10条结果 成果回收站
【期刊论文】超临界流体填料萃取塔流体力学和传质性能(Ⅱ)1传质性能
张泽廷, 张春虎, 朱美文, 于恩平
化工学报1994年2月第45卷第1卷/Journal of Chemical Industry and Engineering (China) February 1994, Vol. 45, No. 1,-0001,():
-1年11月30日
根据双膜理论,建立了超临界流体填料萃取塔液相总体积传质系数关联式;依据柱塞流模型.应用超临界二氧化碳-异丙醇-水和超临界二氧化碳-乙醇-水2种实验体系在内径为25mm的塔内对金属板波和金属丝网θ环2种填料的传质性能进行了模拟计算。结果表明,本文提出的传质数学模型能较好地描述超临界流体填料萃取塔的传质性能。
超临界流体萃取, 填料塔, 传质
-
23浏览
-
0点赞
-
0收藏
-
0分享
-
55下载
-
0
-
引用
【期刊论文】超临界流体填料萃取塔流体力学和传质性能(I)1流体力学数学模型
张泽廷, 张春虎, 朱美文, 千恩平
化工学报1994年2月第45卷第1卷/Journal of Chemical Industry and Engineering (China) February 1994, Vol. 45, No. 1,-0001,():
-1年11月30日
推导和建立了描述超临界流体填料萃取塔两相流体力学特性的数学模型。在25mm内径的连续逆流填料萃取塔中,应用超临界二氧化碳-异丙醇-水、超临界二氧化碳-乙醇-水2种实验体系和金属扳渡、金属丝阿日θ环2种填料对流体力学模型进行了实验验证,计算结果与宴验数据符合较好。
超临界流体萃取, 填料塔, 流体力学
-
39浏览
-
0点赞
-
0收藏
-
0分享
-
84下载
-
0
-
引用
张泽廷, 孙志发, 王树楹, 余国琮
化工学报2002年10月第53卷第10卷/Journal of Chemical Industry and Engineering (China) October 2002, Vol. 53, No. 10,-0001,():
-1年11月30日
采用光学纹影摄影方法观察了多组分蒸发、吸收和解吸过程中相界面处的对流现象。自然蒸发过程所研究的物系为苯/甲苯二元混合物和乙酸亿酸乙酯亿二醇三组分混合物,气液传质过程包括甲醇、异丁醇等分别吸收二氧化碳的吸收过程和二氧化磺从有机溶剂中解吸的过程。结果发现,在多组分有机液体混合物蒸发和气液传质过程中存在规则有序滚桶形或多边形细胞状对流,这说明有序对流运动的产生是相际传质过程中普遍存在的现象,其结构特点取决于实验条件和体系的性质。
界面湍动, 质量传递, 纹影法, 光学观察
-
23浏览
-
0点赞
-
0收藏
-
0分享
-
29下载
-
0
-
引用
【期刊论文】Solubility of solid solutes in supercritical carbon dioxide with and without cosolvents
张泽廷, Qunsheng Li, Zeting Zhang, Chongli Zhong, Yancheng Liu, Qingrong Zhou
Q. Li et al. Fluid Phase Equilibria 207 (2003) 183-192,-0001,():
-1年11月30日
The solubility of 2-naphthol and anthracene in supercritical CO2 was determined at 308.1, 318.1 and 328.1 K, with and without cosolvent. The influence of three polar or nonpolar cosolvents, acetone, ethanol and cyclohexane, was studied at concentrations of 3.6 and 4.0 mol%. The solubility enhancement with these cosolvents is considerable, and the cosolvent effect increases in the order ethanol, acetone, and cyclohexane for 2-naphthol and for anthracene, the order is cyclohexane, ethanol, and acetone. The influence of density and cosolvent on the solid solubility was studied and discussed.
Solubility, Supercritical fluid, Solid solute, Cosolvent
-
21浏览
-
0点赞
-
0收藏
-
0分享
-
111下载
-
0
-
引用
张泽廷, Jun-su Jin, Ze-ting Zhang, Qun-sheng Li, Ying Li, En-ping Yu
Journal of Chemical and Engineering Data, Vol. 50, No. 3, 2005,-0001,():
-1年11月30日
The solid solubility of propyl p-hydroxybenzoate was measured for the first time in supercritical carbon dioxide at temperatures of (308.15, 318.15 and 328.15) K and pressures from (8.0 to 23.0) MPa. The influence of cosolventsscyclohexane, cyclohexane + acetone (molar ratio 1:1), and acetoneswas studied at a mole fraction of 0.035. The data were obtained by using a flow-type phase equilibrium apparatus, which was further tested by measuring the solubility of benzoic acid in compressed CO2. The measured solubilities in supercritical CO2 without and with cosolvents were correlated using the Chrastil equation and the modified Chrastil equation, respectively.
-
73浏览
-
0点赞
-
0收藏
-
0分享
-
128下载
-
0
-
引用