An Integrated Framework for production planning and scheduling for a single
Stage Multiproduct Batch Chemical Process
Mohamed k. Omar, Siew C. Teo
[email protected] [email protected]
Yasothei a/p Suppiah
Multimedia University-Faculty of Engineering and Technology Melaka Campus.
Jalan Ayer Keroh Lama, 75450 Melaka-Malaysia
Abstract
Owing to the increase in demand of low volume specialized chemical compounds
such as in the manufacturing of resins; there is a trend in the chemical process industry to
operate in batches rather than using a continuous flow productio n operation.
This trend parallels the shift to small lot size in discrete-parts manufacturing. The
primary advantage of batch chemical plants is the ability of multiple products to share the
same process resources. Emphasis on planning and scheduling is greatly increased for
batch chemical plants in order to make efficient use of this capability.
This paper reports on an attempt to develop a hierarchical framework, which
comprises of two level hierarchy decision structures for paint resins manufacturing firm.
The proposed hierarchical production-planning framework is comprised of
aggregate and disaggregate module. The aggregate-planning module was formulated as
an integer linear programming model, provides aggregate production, workforce,
backorder and inventory. A master production schedule is developed by disaggregation
the first hierarchy decisions through a weighted integer goal-programming model
This paper presents a computational illustrative example which shows that the
approach is computational feasible and provides an enhancement to management
decisions in terms of cost savings.