منابع مشابه
Hydrodynamics of Foaming Systems in Packed Towers
Foaming can be a serious problem in the process industry. For packed columns foaming is often reported for treatments of sour gases with alkaline solutions (e.g. amine scrubbing), but also for distillation and extractive distillation. Existing hydrodynamic prediction methods for pressure drop and flood points, but also for mass transfer efficiencies, do not consider foaminess. To build an exper...
متن کاملFluid dynamics in multiphase distillation processes in packed towers
In order to design packed columns for multiphase operation it is necessary to include reliable data on the flow behavior in the model. Since experiments inside packings are very difficult to perform, CFD simulations are considered to be a sensible approach as numerical experiments. To obtain reliable results validation is inevitable. We present the validation of twoand three-phase film flow und...
متن کاملThree-Phase Distillation in Packed Towers: Short-Cut Modelling and Parameter Tuning
A short-cut model is developed for the predictive simulation of a three-phase distillation process in packed towers. The model is taking into account the mass transfer resistance between the vapour phase and both liquid phases, whereas equilibrium is assumed between the two liquid phases. The development of the model was strongly connected with a systematic experimental investigation study of t...
متن کاملInvestigation of mass transfer coefficients in irregular packed liquid-liquid extraction columns in the presence of various nanoparticles
In the present study, the effect of various nanofluids on mass transfer coefficients in an irregular packed liquid-liquid extraction column was investigated. The chemical system of toluene–acetic acid–water was used. 10 nm SiO2, TiO2 and ZrO2 nanoparticles with various concentrations were dispersed in toluene-acid acetic to provide nanofluids. The influence of concentration and hydrophobicity/h...
متن کاملSurveying Denitrification Efficacy in Up-Flow Packed Bed Bioreactor Operated under Heterotrophic Condition Using Autotrophic Bacteria
Introduction: The biological denitrification process is an interesting cost-effective technique to remove nitrate from water supplies. Acetic acid can be used as a carbon source in this process, but its consumption rate is a critical issue and, in some cases, it is quite different from stoichiometric constants. The current study aimed to investigate the nitrate removal in an up-flow packed bed ...
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ژورنال
عنوان ژورنال: Chemical engineering
سال: 1953
ISSN: 0375-9253
DOI: 10.1252/kakoronbunshu1953.17.261