Previously, Tanskanen and Pohjola (2000) and Tanskanen and Malinen (2005) have presented a method of rigorous minimum energy calculation for non-ideal multicomponent distillation. The method is based on column simulation with a large number of equilibrium stages to mimic infinitely high columns, and it has been successfully tested with simple distillation column systems. This paper describes a ...

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...

Transport phenomena, including mass, momentum and heat transfer and the coupling of transport and chemical reactions, play a dominant role in chemical engineering processes. For example, a distillation process in a packed column involves fluid flow (momentum transfer) of liquid and vapor phases, mass transfer within a homogeneous phase and on the liquid and vapor interface, and heat transfer wi...

the simulation of distillation columns is an essential step in design, optimization, and rating. in this paper, a new procedure has been proposed for the initial estimation of column profiles based on modified kremser’s group method for simple and/or complex columns. the effect of this initialization algorithm on simulation procedure has been studied through two examples. the results show signi...

The catalytic esterification of n-propyl propionate using propionic acid and n-propyl alcohol as reactants via a conventional pilot plant reactive distillation column was carried-out. The strongly acidic ion-exchange resin Amberlyst46TM was used as the solid acid catalyst. The influence of the reflux ratio (from 2.0 to 2.5), the molar feed ratio (from 2.0 to 2.5), and total feed (from 3.0 to 4....

The vacuum distillation of methanol from aqueous formaldehyde solution is an important step in the production of formaldehyde by silver process. In this work the separation of this reactive threecomponent mixture is discussed. Physico-chemical phase equilibrium model proposed by Maurer was used in order to investigate the influence of some operating parameters on the performance of the column. ...

• Waste cooking oil was considered as feedstock for biodiesel production. Kinetic data were derived from actual WCO samples avoiding model components. Aluminum chloride hexahydrate is a promizing catalyst the esterification step. Reactive distillation with alkali used transesterification. In this work, novel method proposed conversion of waste into biodiesel. A two-step approach based on pretre...