Modelling short packed and tray-type distillation columns for controller design
نویسندگان
چکیده
منابع مشابه
Tray Columns: Design
Distillation has remained an important separation technology for the chemical process industries. In 1997 it was reported in the journal Chemical Engineering that about 95% of all worldwide separation processes use this technology. In the USA alone, some 40000 distillation columns represent a capital investment of about US $8 billion. They consume the energy equivalent of approximately 1 billio...
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INTRODUCTION Multi stage distillation processes are normally operated in columns, equipped with trays or packing to obtain counter current flow of vapour and liquid. In tray columns the liquid is moving from the inlet over the active area to the exit downcomer. The necessary mass transfer area between the phases is achieved by intense mixing of vapour and liquid on the bubbling area. In packed ...
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Internally heat integrated distillation column has received a great attention lately because of its ultimate potential for energy savings. Typical conceptual design of such columns is based on constant heat transfer duties along the column stages. This paper introduces more effective approach to conceptual design of heat integrated distillation columns based on constant available heat transfer ...
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For a packed bed in a distillation column, fmax is the maximum fractional liquid maldistribution that can be tolerated in a parallel column model whilst still being able to achieve the design separation. It was previously shown that fmax can be easily calculated from a conventional column simulation output and it is a measure of the sensitivity of a packed bed to maldistribution. In this paper,...
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We develop a short and optimal design methodology for multicomponent mixtures, based on the concept of minimum difference in composition. The minimum reflux ratio is calculated through an analytical procedure, which allowing their use in multicomponent mixtures. The procedure also includes a simple criterion to optimize the structural design of the column, without increasing energy consumption....
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ژورنال
عنوان ژورنال: Mathematical and Computer Modelling
سال: 1992
ISSN: 0895-7177
DOI: 10.1016/0895-7177(92)90125-5