中国科技论文在线
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중국과기논문재선
SCIENCEPAPER ONLINE
2011年
12期
933-937,951
,共6页
蒋茂星%胡晓慧%王金献%郑声煊%李军
蔣茂星%鬍曉慧%王金獻%鄭聲煊%李軍
장무성%호효혜%왕금헌%정성훤%리군
化学工程%超临界%体积膨胀%二元体系%三元体系
化學工程%超臨界%體積膨脹%二元體繫%三元體繫
화학공정%초림계%체적팽창%이원체계%삼원체계
chemical engineering%supercritical%volume expansion%binary system%ternary system
采用t-mPR状态方程(EoS)对CO2/丙酮、CO2/醇二元体系和CO2/醇/水三元体系的高压汽液平衡(VLE)、液相体积膨胀率进行计算,并与文献报道的实验数据,以及采用PR EoS得到的结果进行比较。结果表明,与PR EoS相比较,t-mPR EoS可以对上述二元体系的VLE取得较好的关联效果,对三元体系取得较好的预测效果。基于VLE点的计算,进一步对上述体系的液相体积膨胀率进行预测。与PR EoS相比较,t-mPR EoS对二元体系的预测结果的精度有所提高,对三元体系在7.8MPa左右有最大体积膨胀率,模型预测较好。
採用t-mPR狀態方程(EoS)對CO2/丙酮、CO2/醇二元體繫和CO2/醇/水三元體繫的高壓汽液平衡(VLE)、液相體積膨脹率進行計算,併與文獻報道的實驗數據,以及採用PR EoS得到的結果進行比較。結果錶明,與PR EoS相比較,t-mPR EoS可以對上述二元體繫的VLE取得較好的關聯效果,對三元體繫取得較好的預測效果。基于VLE點的計算,進一步對上述體繫的液相體積膨脹率進行預測。與PR EoS相比較,t-mPR EoS對二元體繫的預測結果的精度有所提高,對三元體繫在7.8MPa左右有最大體積膨脹率,模型預測較好。
채용t-mPR상태방정(EoS)대CO2/병동、CO2/순이원체계화CO2/순/수삼원체계적고압기액평형(VLE)、액상체적팽창솔진행계산,병여문헌보도적실험수거,이급채용PR EoS득도적결과진행비교。결과표명,여PR EoS상비교,t-mPR EoS가이대상술이원체계적VLE취득교호적관련효과,대삼원체계취득교호적예측효과。기우VLE점적계산,진일보대상술체계적액상체적팽창솔진행예측。여PR EoS상비교,t-mPR EoS대이원체계적예측결과적정도유소제고,대삼원체계재7.8MPa좌우유최대체적팽창솔,모형예측교호。
The vapor-liquid equilibirum (VLE) and volume expansion of the liquid phases for the CO2/acetone and CO2/ethanol binary systems and the CO2/ethanol/water ternary system have been investigated using the t-mPR equation of state (t-mPR EoS). Calcualted results have been compared with published experimental data and those obtained from the PR equation of state (PR EoS). The correlations for the published VLE data of the above binary systems and the prediction for the ternary system showed that both the t-mPR EoS and the PR EoS can provide fairly good VLE calculations, but t-mPR EoS gives slightly better results. The volume expansion prediction for the above systems and the comparison with the published data showed that the t-mPR EoS gives better results to PR-EoS for the binary systems and provides more reasonable results around 7.8 MPa (there exists a maximum volume expansion) for the ternay system.