The design of a comprehensive control system for air conveyance in a large polyethylene plant requires the integration of continuous and batch control. Continuous flow control for a wide range of process configurations must be integrated into the overall sequencing logic used to align, start-up, and shutdown the various flow paths. Conveying systems range from simple one blower, one route systems, to storage transfer systems incorporating 100 or more possible flow routes. In a complex conveying system the large number of route selections requires an operator interface which is self-explanatory and includes extensive validity checking of operator entries. Within one unit of a plant, an operator may have several conveying systems operating simultaneously; therefore, the control system also must function with minimal operator attention. A computer based control system, as described in this paper, provides the optimum system for achieving the desired operator interface and automated control performance.


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    Title :

    Control systems design for air conveying systems


    Additional title:

    Entwicklung von Kontrollsystemen fuer Luftfoerdersysteme


    Contributors:


    Publication date :

    1983


    Size :

    7 Seiten, 10 Bilder


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English






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