This contribution focuses on the development of a dynamic conceptual model for a batch rectifier having an infinite number of stages without resorting to multistage calculations. For a given instantaneous still composition, the key feature of the method is the estimation of the instantaneous minimum reflux or the instantaneous distillate composition by using the Rectification Body Method. The u...

A batch reactor may be combined directly with a distillation column by distilling off the light component product in order to increase the reactor temperature or to improve the product yield of an equilibrium reaction. The same amount of the light product should be removed as the amount being formed by the reaction at any time. A linearized model has been developed which describes the process b...

Pulverized Wyoming subbituminous coal was beneficiated by low-pH oil agglomerationat CONSOL to prepare the coal for direct liquefaction. Conventional cleaning is not veryeffective in cleaning this coal; for example, conventional oil agglomeration only givesabout 20% ash rejection. To improve ash rejection, the coal-water slurry was acidifiedto a pH of about 0.5. Oil agglomeratio...

introduction: aloe vera compounds have inhibitory activity on fungi, bacteria, and viruses. this study examines the antibacterial activity of a. vera purified extracts including gel, boiled skin, boiled gel, and distilled extract against pathogenic bacteria, staphylococcus aureus, methicillin-resistant s. aureus (mrsa), klebsiella pneumonia and pseudomonas aeruginosa were elucidated. method: th...

A dynamic model for the simulation of the batch operation of a multicomponent packed distillation column is developed. The accuracy of simulation code is verified by using two types of mixtures (cyclohexane-n-heptane-toluene and ethanol–water) theoretically and experimentally. An optimum internal reflux ratio profile is searched to maximize the distillate amount of a specified concentration for...

Asavas and aristhas are medicines prepared by fermentation. In some medicines alcohol produced by fermentation is distilled and added to the powdered drugs for a fixed period, filtered and the filtrate is used as medicines.Karpurasava is prepared by distilling the alcohol. The quantity of alcohol in the distillate was 9.87% by the textual method while it was 5.77% by glass distillation apparatu...

A study has been made of various methods of distillation of solutions of furfural and of xylose with the object of increasing the 88-percent yield of furfural obtained from xylose by the present standard m ethod of distillation. Sources of error that have been considered are: Decomposition of furfural, volatilization of furfural, effect of rubber stoppers used in the distillation procedure, inc...