Please use this identifier to cite or link to this item: https://doi.org/10.1016/B978-0-444-59506-5.50046-8
Title: A Novel Multi-Grid Formulation for Scheduling Semi-Continuous Plants
Authors: Susarla, N.
Li, J.
Karimi, I.A. 
Keywords: Multi-grid formulation
Semi-continuous plants
Short-term scheduling
Unit slots
Issue Date: 2012
Source: Susarla, N.,Li, J.,Karimi, I.A. (2012). A Novel Multi-Grid Formulation for Scheduling Semi-Continuous Plants. Computer Aided Chemical Engineering 31 : 1075-1079. ScholarBank@NUS Repository. https://doi.org/10.1016/B978-0-444-59506-5.50046-8
Abstract: Semi-continuous plants are abundant in bulk manufacturing chemical process industries. However, scheduling of semi-continuous plants has received rather lower attention as compared to batch plants in the literature. In this paper, we develop a novel continuous-time formulation for short-term scheduling of semi-continuous processes using a multi-grid approach. For this, we adopt the unit-slots framework proposed by Susarla et al. (2010) to ensure accurate resource balances. We allow a number of storage configurations (no, constrained, and unconstrained) with either dedicated or multipurpose storage units. Also, we consider various wait policies (no, limited, and unlimited) for all materials. In addition, we consider resources such as utilities, equipment, etc. and allow operational scenarios such as sequence-dependent transition times. Numerical evaluation shows gains in solution efficiency as compared to the literature models in terms of better solutions, fewer variables, constraints and computation time. © 2012 Elsevier B.V.
Source Title: Computer Aided Chemical Engineering
URI: http://scholarbank.nus.edu.sg/handle/10635/54634
ISSN: 15707946
DOI: 10.1016/B978-0-444-59506-5.50046-8
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