توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱Energy Transfer in Tertiary Oil Recovery by Steam Injection
نویسنده(ها): ، ،
اطلاعات انتشار: یازدهمین کنگره ملی مهندسی شیمی ایران، سال
تعداد صفحات: ۱۱
The purpose of this investigation was to study energy and mass transfer in thermal oil recovery in porous media. A set of multistage laboratory tests was performed to find the effects of temperature on the viscosity of waterflood residual heavy oil during steam injection. Sand packed models were utilized to investigate the porosity, permeability, and sand size distribution on the recovery of waterflood residual oil. An oil bank was formed in steam injection during the tertiary oil recovery which results very high oil recovery efficiency. Steam injection was found to be very effective, compared to coldand hot–water flooding, for the recovery of heavy oil. A mathematical model was developed to predict the temperature profile during the steam injection process. Satisfactory agreement is achieved between the temperature profile, predicted from the model, and the experimental results<\div>

۲Simulation of Dissociation Extractive Crystallization Process in Ionic Media
نویسنده(ها): ،
اطلاعات انتشار: یازدهمین کنگره ملی مهندسی شیمی ایران، سال
تعداد صفحات: ۱۱
Dissociation extractive crystallization (DEC) is a novel separation process that shows its efficacy in the separation of close boiling and isomeric components, where the conventional methods are not effective. The intention of this study is to develop a theoretical basis for solution phase behaviour and to provide a simulation model for the process in ionic media. The model utilizes the UNIFAC method and it can predict the concentrations of all species after adding reagent as well as the fractional recovery of the process. The validity of the model has been assessed by the experimental results achieved in the separation of dichloroacetic acid (DCA) and trichloroacetic acid (TCA) in aqueous media. To enable the model for such a task, the UNIFAC has been modified to be able to predict the activity coefficient of neutral molecules in the presence of the ionic particles. The experimental and predicted results present on ternary solid–liquid phase equilibrium diagrams for the DCA – TCA – water system. A good agreement is found between the predicted results from the separation model and the experimental ones for such a complex system.<\div>
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