Hierarchical Production Scheduling - A Case Study at Perstorp

Lindholm, AnnaLund University,Lunds universitet,Institutionen för reglerteknik,Institutioner vid LTH,Lunds Tekniska Högskola,Department of Automatic Control,Departments at LTH,Faculty of Engineering, LTH,Lund University, Sweden (author)

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.

Lidestam, HeleneLinköpings universitet,Produktionsekonomi,Tekniska högskolan(Swepub:liu)helgu13 (author)
Quttineh, Nils-Hassan,1979-Linköpings universitet,Optimeringslära,Tekniska högskolan,Division of Optimization(Swepub:liu)nilqu94 (author)
Institutionen för reglerteknikInstitutioner vid LTH (creator_code:org_t)

In:24th European Symposium on Computer Aided Process Engineering, PTS A and B: Elsevier33, s. 511-516, s. 511-5161570-7946
In:24th European Symposium on Computer Aided Process Engineering: Elsevier33, s. 511-516, s. 511-5169780444634344

By the author/editor: Lindholm, Anna; Lidestam, Helene; Quttineh, Nils-H ...

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Electrical Engin ...; and Control Engineer ...

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Mechanical Engin ...; and Production Engin ...

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.