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Clean-in-Place på Tate and Lyle Sweden AB
Jönköping University, School of Engineering, JTH, Mechanical Engineering.
Jönköping University, School of Engineering, JTH, Mechanical Engineering.
2015 (Swedish)Independent thesis Advanced level (degree of Master (Two Years)), 10 credits / 15 HE creditsStudent thesisAlternative title
Clean-in-Place at Tate and Lyle Sweden AB (English)
Abstract [en]

This thesis work is about an improvement in Tate and Lyle’s Clean-in-Place system. The thesis investigates how the designs around two machines can be constructed to automate its Clean-in-Place system. Alongside, two step-by-step manuals were created on how the machines should be cleaned. Furthermore a cleaning agent were searched for which eliminates the oat residues that Tate and Lyle faces. The study’s focus was to reduce the cleaning time in their closed systems by automating the cleaning sequences and use a more suitable cleaning agent for their type of residues.


The background to the study can be described as a cleaning problem. Tate and Lyle’s Clean-in-Place system is operated manually and is executed twice a month. The cleaning agents in their current situation is sodium hydroxide and nitric acid which is not adapted for the remaining residues that appear in their equipment piping and edges. The problem arises when the monument remains isn’t properly cleared so the production cannot be resumed since contamination may occur. The equipment is disassembled, cleaned by hand and reassembled before the production can be continued.


The purpose of the thesis work is to find the most advantageous way to clean a decanter centrifuge and a separator. A more suitable cleaning agent are examined as well as the economic benefits that can occur at reduced cleaning time. The work delimited from practical construction and planning for an upgraded system.


The result consists of two step-by-step manuals that specifically describes how the machines should be cleaned with a Clean-in-Place system. Subsequently, two designs were developed around the decanter centrifuge and separator. The designs describe the placement of pipes, valves and pumps as well as suggestions for new pipelines that provide cleaning benefits. Examination of more customized cleaning was done as an experiment in the chemistry department at the School of Engineering in Jönköping. The experiment presented as unsuccessful and wouldn’t be repeated because of optimistic planning. Instead, the result was presented as a Pugh-matrix where four supplements based on similar studies were used. With an automated system and a qualified cleaning the production time could be increased by 9, 7 %. The economic change was presented as an investment calculation. 

Place, publisher, year, edition, pages
2015. , 44 p.
Keyword [sv]
Clean-in-Place, slutet system, rengöring, automation, upplösningsförmåga, effektivitet, av-kastningsgrad.
National Category
Mechanical Engineering
URN: urn:nbn:se:hj:diva-28389ISRN: JU-JTH-MTA-1-20150033OAI: diva2:874389
External cooperation
Tate and Lyle AB

Vissa bilagan har valt att döljas på grund av sekretesskäl

Available from: 2015-12-04 Created: 2015-11-26 Last updated: 2015-12-04Bibliographically approved

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