DYNAMICS AND CONTROL OF A ZONE-MELTING PROCESS

Chemical plant operations are now becoming more advanced, making process control more difficult by conventional control alone, The zone melting process, which is a typical example of advanced chemical process operation, has strong disturbances due to the movement of a sample tube or heaters and to interactions between heaters. In this work, an optimal regulator was applied to a simple anthracene zone melting process and the experimental results showed good control performance. This result suggests that the production rate of the zone melting process can be imporved. © 1990, The Society of Chemical Engineers, Japan. All rights reserved.