摘要
作者用静态法测定了0.7MPa压力(绝压)下NH_3—CO_2—H_2O弱电解质溶液的汽液相平衡数据,实测温度范围为140～160℃,溶液离子强度为0.10～0.36。作者在Edwards模型中引入三元离子交互作用项和可调参数,并考虑了温度对二元和三元离子交互作用参数的影响,由实测汽液相平衡数据回归得到温度系数。关联汽液相平衡结果表明,修正的Edwards模型取得满意的效果。
VLE data for aqueous weak electrolyte system of NH3 -CO2 -H2O have been measured at 0. 7 MPa by using static experimental apparatus. The measurements were carried out at 140-160℃ and the ionic strength was from 0.1 to 0. 36. A ternary ion-ion interaction term was introduced into Edwards model. All ternary interaction parameters and two binary interaction parameters are adjustable and temperature dependent . The temperature coefficients were obtained from experimental data. The calculated results by the modified model are in good agreement with the experimental data.
出处
《高校化学工程学报》
EI
CAS
CSCD
1990年第3期196-206,共11页
Journal of Chemical Engineering of Chinese Universities
基金
中国科学院自然科学基金
关键词
氨
二氧化碳
水
汽液平衡
Ammonia
Carbon Dioxide
Electrolytes
Water
