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Economic Cost Function Design and Grade Change Optimization for a Gas Phase Polyethylene Reactor

Larsson, Per-Ola LU ; Åkesson, Johan LU and Andersson, Niklas (2011) 50th IEEE Conference on Decision and Control and European Control Conference, 2011
Abstract
Gas phase polyethylene reactors are able to produce several different grades of polymer. Adapting to market conditions requires grade transitions, associated with costs in terms of raw material and temporary production of lower priced off-specification products. In this paper, both stationary production and dynamic grade transitions are optimized to maximize profit, i.e., economic process optimization. A cost function for transitions that utilizes product quality variable intervals, specifying premium priced products, and that also gives incentives to produce products having quality variables on target, i.e., equal to a defined grade, is designed. A previously published reactor model is extended with quality variable models and several... (More)
Gas phase polyethylene reactors are able to produce several different grades of polymer. Adapting to market conditions requires grade transitions, associated with costs in terms of raw material and temporary production of lower priced off-specification products. In this paper, both stationary production and dynamic grade transitions are optimized to maximize profit, i.e., economic process optimization. A cost function for transitions that utilizes product quality variable intervals, specifying premium priced products, and that also gives incentives to produce products having quality variables on target, i.e., equal to a defined grade, is designed. A previously published reactor model is extended with quality variable models and several grade transitions are optimized and shown. (Less)
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Contribution to conference
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50th IEEE Conference on Decision and Control and European Control Conference, 2011
project
PICLU
language
English
LU publication?
yes
id
5583a465-3507-41ed-b2db-e3f5327e5ebf (old id 2204387)
date added to LUP
2011-11-15 09:51:05
date last changed
2016-06-28 14:44:20
@misc{5583a465-3507-41ed-b2db-e3f5327e5ebf,
  abstract     = {Gas phase polyethylene reactors are able to produce several different grades of polymer. Adapting to market conditions requires grade transitions, associated with costs in terms of raw material and temporary production of lower priced off-specification products. In this paper, both stationary production and dynamic grade transitions are optimized to maximize profit, i.e., economic process optimization. A cost function for transitions that utilizes product quality variable intervals, specifying premium priced products, and that also gives incentives to produce products having quality variables on target, i.e., equal to a defined grade, is designed. A previously published reactor model is extended with quality variable models and several grade transitions are optimized and shown.},
  author       = {Larsson, Per-Ola and Åkesson, Johan and Andersson, Niklas},
  language     = {eng},
  title        = {Economic Cost Function Design and Grade Change Optimization for a Gas Phase Polyethylene Reactor},
  year         = {2011},
}