TY - JOUR
T1 - Production scheduling of a large-scale industrial continuous plant
T2 - Short-term and medium-term scheduling
AU - Shaik, Munawar A.
AU - Floudas, Christodoulos A.
AU - Kallrath, Josef
AU - Pitz, Hans Joachim
N1 - Funding Information:
The authors gratefully acknowledge support from the National Science Foundation and BASF Aktiengesellschaft, Ludwigshafen, Germany.
PY - 2009/3/20
Y1 - 2009/3/20
N2 - In this work, we describe a framework for short-term and medium-term scheduling of a large-scale industrial continuous plant. For medium-term scheduling, two sub-problems are solved using a rolling-horizon based decomposition scheme. An upper-level model is used to find the optimal number of products, and the length of the time horizon to be considered for solving the lower level short-term scheduling problem. At the lower level, we proposed an improved model for short-term scheduling of continuous processes using unit-specific event-based continuous-time representation. The proposed formulation is demonstrated on a large-scale industrial case study comprising up to 100 units with 1/3 processing and 2/3 storage units operating in a continuous-mode for producing more than 100 different products over a one month time horizon.
AB - In this work, we describe a framework for short-term and medium-term scheduling of a large-scale industrial continuous plant. For medium-term scheduling, two sub-problems are solved using a rolling-horizon based decomposition scheme. An upper-level model is used to find the optimal number of products, and the length of the time horizon to be considered for solving the lower level short-term scheduling problem. At the lower level, we proposed an improved model for short-term scheduling of continuous processes using unit-specific event-based continuous-time representation. The proposed formulation is demonstrated on a large-scale industrial case study comprising up to 100 units with 1/3 processing and 2/3 storage units operating in a continuous-mode for producing more than 100 different products over a one month time horizon.
KW - Continuous process
KW - Continuous time
KW - Event based
KW - Medium-term scheduling
KW - Short-term scheduling
KW - State task network
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U2 - 10.1016/j.compchemeng.2008.08.013
DO - 10.1016/j.compchemeng.2008.08.013
M3 - Article
AN - SCOPUS:59249096047
SN - 0098-1354
VL - 33
SP - 670
EP - 686
JO - Computers and Chemical Engineering
JF - Computers and Chemical Engineering
IS - 3
ER -