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Optimization of the reflux ratio for methanol–water stage distillation column
Research on Chemical Intermediates, 2012In this paper, the enthalpy-concentration method was applied in order to model a steady-state continuous methanol–water mixture distillation column. This work includes three steps; first, to develop a code in MATLAB v.7.6 to apply to the mathematical model of the column. The second step is to simulate the column using HYSIS v.3.2.
Bahador Abolpour +4 more
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Journal of Urology, 2020
The vesicoureteral reflux index is a simple, validated tool for predicting resolution of reflux. Along with likelihood of spontaneous resolution identification of children at risk for febrile urinary tract infection impacts management. We evaluated the usefulness of the vesicoureteral reflux index as a predictive factor for breakthrough febrile urinary
Angela M, Arlen +5 more
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The vesicoureteral reflux index is a simple, validated tool for predicting resolution of reflux. Along with likelihood of spontaneous resolution identification of children at risk for febrile urinary tract infection impacts management. We evaluated the usefulness of the vesicoureteral reflux index as a predictive factor for breakthrough febrile urinary
Angela M, Arlen +5 more
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Fractional distillation of multicomponent mixtures at variable reflux ratio
Physica, 1949Abstract A method is given for making distillation calculations at variable reflux, if the volatilities in top and bottom section have a constant ratio. The ratio's in each section, may be different. The molal heat contents of the components in the liquid and vapor state are approximated by a hyperbola in the temperature range of the distillation ...
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Rapid calculation of plate number and reflux ratio in batch distillation
Chemical Engineering Science, 1951Abstract The method of B owman-Cichelli for determination of minimum reflux and plate requirements in binary batch distillations has been extended with a relation between these minimum requirements and the number of plates and reflux ratio to be used in practice.
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Unusual Control Structure for High Reflux Ratio Distillation Columns
Industrial & Engineering Chemistry Research, 2009Distillation control wisdom suggests that reflux flow rate should be used to control the reflux-drum level when the reflux ratio is large (>3). In the typical case where a single-end temperature control structure is used, reboiler heat input is used to control a tray temperature at an appropriate location in the column.
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Sex Ratio of Gastroesophageal Reflux in Infancy
Journal of Pediatric Gastroenterology and Nutrition, 1991S, Peeters, Y, Vandenplas
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Chemical Engineering
This paper examines various methods for reducing costs of thermal energy during the separation of liquid mixtures using rectification method. A theory of internal energy saving in the rectification process is presented. It is proven that specific heat costs depends only on the reflux ratio and is independent of the boilup ratio.
M.K. Zakharov +2 more
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This paper examines various methods for reducing costs of thermal energy during the separation of liquid mixtures using rectification method. A theory of internal energy saving in the rectification process is presented. It is proven that specific heat costs depends only on the reflux ratio and is independent of the boilup ratio.
M.K. Zakharov +2 more
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A Constant Reflux Ratio Distilling Head
Industrial & Engineering Chemistry, 1951Lloyd Berg, Lewis K. Smith
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Optimization of the Variable Reflux Ratio in a Batch Distillation Column through a Heuristic Method
Chemical Product and Process Modeling, 2007The manuscript is focused on the optimization of a batch distillation column that is actually formulated in terms of control problem. The final objective is finding the optimal time-dependent reflux profile. In order to fulfill the call for simplicity and functionality from the industries, the reflux profile was approximated by means of a piece-wise ...
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Gastro-oesophageal reflux disease
Nature Reviews Disease Primers, 2021Guy Boeckxstaens, Ronnie Fass
exaly