Simplified plantwide control structure for the diethyl oxalate process

2019 ◽  
Vol 126 ◽  
pp. 451-464
Author(s):  
William L. Luyben
Keyword(s):  
Control Structure ◽  
Diethyl Oxalate ◽  
Plantwide Control

Plantwide Control: The Search for the Self-optimizing Control Structure

1999 ◽  
Vol 32 (2) ◽  
pp. 6932-6937 ◽  
Author(s):  
Sigurd Skogestad ◽  
Ivar J. Halvorsen ◽  
Truls Larsson ◽  
Marius S. Govatsmark
Keyword(s):  
Control Structure ◽  
The Self ◽  
Plantwide Control ◽  
Optimizing Control

scholarly journals Design and Control of Integrated Styrene-Aniline Production Plant

2009 ◽  
Vol 4 (5) ◽  
Author(s):  
Octavian Partenie ◽  
Vincent van der Last ◽  
Costin Sorin Bildea ◽  
Pietro Altimari
Keyword(s):  
Control Structure ◽  
Chemical Reactor ◽  
Stable Operation ◽  
Inlet Temperature ◽  
Production Plant ◽  
Plant Design ◽  
Ethylbenzene Dehydrogenation ◽  
Nitrobenzene Hydrogenation ◽  
Plantwide Control ◽  
And Control

This paper illustrates the operational difficulties arising from simultaneously performing exothermic and endothermic reactions, and demonstrates that a plant can be built and safely operated by integrating the design and plantwide control issues. The behaviour of reactor – separation – recycle systems carrying the coupled reactions A ?P + Q (endo) and B + Q ? R (exo) is investigated. Irrespective of the control structure, state multiplicity cannot be removed if the intermediate component Q is recycled. Therefore, the chemical reactor should be designed such that the recycle of Q can be avoided without economic penalty. The theoretical findings are applied to the design and control of a plant coupling ethylbenzene dehydrogenation and nitrobenzene hydrogenation for simultaneous production of styrene and aniline. After plant design, a rigorous dynamic model is developed using AspenDynamics. A plantwide control structure is implemented and shown to be able to achieve stable operation. Production rate changes of reasonable magnitude can be achieved by changing the reactor-inlet flow rates or bed-inlet temperature.

scholarly journals Assessment of the Plantwide Control Structure in a Pectin Production Plant

2019 ◽  
Vol 52 (1) ◽  
pp. 251-256 ◽  
Author(s):  
F.D. Bähner ◽  
P.A. Santacoloma ◽  
J.K. Huusom
Keyword(s):  
Control Structure ◽  
Production Plant ◽  
Plantwide Control

Model-Based Supervisory Control Structure for Plantwide Control of a Reactor–Separator–Recycle Plant

2014 ◽  
Vol 53 (52) ◽  
pp. 20177-20190 ◽  
Author(s):  
Hilda M. Moscoso-Vasquez ◽  
Gloria M. Monsalve-Bravo ◽  
Hernan Alvarez
Keyword(s):  
Supervisory Control ◽  
Control Structure ◽  
Model Based ◽  
Plantwide Control
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