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Hierarchical Production Scheduling - A Case Study at Perstorp

Lindholm, Anna LU ; Lidestam, Helene and Quttineh, Nils-Hassan (2014) 24th European Symposium on Computer Aided Process Engineering (ESCAPE) In 24th European Symposium on Computer Aided Process Engineering, PTS A and B 33. p.511-516
Abstract
Planning and scheduling are functions that have large economic impact in the chemical process industry. For integrated sites with many interconnected production areas, obtaining production schedules that respect all production-related constraints is a complex task. One important issue is the constraints due to disturbances in utilities, such as steam and cooling water. These are often site-wide disturbances that may make it impossible to maintain desired production rates in several production areas at a site. In this study, scheduling at two levels of the functional hierarchy at a site of a world lead chemical industry, Perstorp, is handled. The activities are denoted production scheduling (PS) and detailed production scheduling (DPS).... (More)
Planning and scheduling are functions that have large economic impact in the chemical process industry. For integrated sites with many interconnected production areas, obtaining production schedules that respect all production-related constraints is a complex task. One important issue is the constraints due to disturbances in utilities, such as steam and cooling water. These are often site-wide disturbances that may make it impossible to maintain desired production rates in several production areas at a site. In this study, scheduling at two levels of the functional hierarchy at a site of a world lead chemical industry, Perstorp, is handled. The activities are denoted production scheduling (PS) and detailed production scheduling (DPS). Real data of incoming orders and utility disturbances are used to produce a production schedule and detailed production schedule for one month. The PS and DPS problems are formulated as optimization problems, where production-related constraints such as production rate constraints, inventory limitations, and start-up costs are included. The objective functions of the PS and DPS problems are formulated to reflect the importance of different issues at the site. The procedure aims to show how the hierarchical optimization framework may be used to provide decision support for how to operate the production at a site in order to maximize profit while minimizing the effects of site-wide disturbances. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
production scheduling, utility disturbances, chemical industry, optimization
in
24th European Symposium on Computer Aided Process Engineering, PTS A and B
volume
33
pages
511 - 516
publisher
Elsevier
conference name
24th European Symposium on Computer Aided Process Engineering (ESCAPE)
external identifiers
  • wos:000345275100085
  • scopus:84902961760
ISSN
1570-7946
language
English
LU publication?
yes
id
3cfc71c7-c088-4178-b59e-e87d8a59f491 (old id 4982555)
date added to LUP
2015-01-27 12:08:15
date last changed
2017-01-01 05:22:19
@inproceedings{3cfc71c7-c088-4178-b59e-e87d8a59f491,
  abstract     = {Planning and scheduling are functions that have large economic impact in the chemical process industry. For integrated sites with many interconnected production areas, obtaining production schedules that respect all production-related constraints is a complex task. One important issue is the constraints due to disturbances in utilities, such as steam and cooling water. These are often site-wide disturbances that may make it impossible to maintain desired production rates in several production areas at a site. In this study, scheduling at two levels of the functional hierarchy at a site of a world lead chemical industry, Perstorp, is handled. The activities are denoted production scheduling (PS) and detailed production scheduling (DPS). Real data of incoming orders and utility disturbances are used to produce a production schedule and detailed production schedule for one month. The PS and DPS problems are formulated as optimization problems, where production-related constraints such as production rate constraints, inventory limitations, and start-up costs are included. The objective functions of the PS and DPS problems are formulated to reflect the importance of different issues at the site. The procedure aims to show how the hierarchical optimization framework may be used to provide decision support for how to operate the production at a site in order to maximize profit while minimizing the effects of site-wide disturbances.},
  author       = {Lindholm, Anna and Lidestam, Helene and Quttineh, Nils-Hassan},
  booktitle    = {24th European Symposium on Computer Aided Process Engineering, PTS A and B},
  issn         = {1570-7946},
  keyword      = {production scheduling,utility disturbances,chemical industry,optimization},
  language     = {eng},
  pages        = {511--516},
  publisher    = {Elsevier},
  title        = {Hierarchical Production Scheduling - A Case Study at Perstorp},
  volume       = {33},
  year         = {2014},
}