Transport Phenomena In Particulate Systems

Author(s): Nivaldo Aparecido Corrêa, Fábio Bentes Freire and Ronaldo Guimarães Corrêa

DOI: 10.2174/978160805227111201010124

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Control of the Drying Process in Spouted Bed

Pp: 124-147 (24)

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Abstract

SHS investigation development is considered from the geographical and historical viewpoint. 3 stages are described. Within Stage 1 the work was carried out in the Department of the Institute of Chemical Physics in Chernogolovka where the scientific discovery had been made. At Stage 2 the interest to SHS arose in different cities and towns of the former USSR. Within Stage 3 SHS entered the international scene. Now SHS processes and products are being studied in more than 50 countries.

Abstract

A short overview of the main caracteristics of a control system applied to drying processes is presented. This includes examining several considerations that must be taken into account during the design of a control system and the associated problems that must be resolved. Special attention is dedicated to analyze the control problems of spouted bed dryers. The performances of different control configurations such as a self-tuning PID, supervisory and optimizing controllers are discussed and their advances and drawbacks examine. In today’s competitive market, technology plays an important rule allowing the implementation of advance control structures, improving the quality of the dried products and simultaneously saving energy.

Keywords:

PID controller, supervisory controller, controller design, optimizing controller, pressure sensor.

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