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Dynamic modelling of a kraft pulp mill producing softwood and hardwood pulp in campaigns
RISE - Research Institutes of Sweden, Bioekonomi, Bioraffinaderi och energi.
RISE - Research Institutes of Sweden, Bioekonomi, Bioraffinaderi och energi.
RISE - Research Institutes of Sweden, Bioekonomi, Bioraffinaderi och energi.
2018 (Engelska)Ingår i: Pulping Engineering and Environmental Recycling Sustainability Conference, PEERS 2018: Technical Solutions for Today and Beyond, 2018, s. 673-683Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

Pulp mills producing hardwood and softwood pulp in campaigns have constantly changing process stream compositions. There is aneed to know how these variations develop during the campaigns and that was the objective of this study. A dynamic model, built in the simulation program WinGEMS, has been created by including tanks and reactors with known residence times. A case with a mill producing softwood and hardwood pulp in campaigns has been designed and studied. Some of the studied parameters were white liquor concentration, recovery boiler load and composition of weak black liquor. The dynamic changes of these parameters were not unexpected; however, the time responses and magnitude of these changes were of bigger interest. For instance, it took a little more than 3 days, from the start of a new campaign, to totally replace the weak black liquor from one wood species with the other. In order to interpret results successfully, it was necessary to be aware of the residence time between certain positions in the pulp mill model.

Ort, förlag, år, upplaga, sidor
2018. s. 673-683
Nyckelord [en]
dynamic model, hardwood pulp, softwood pulp, kraft pulp mill
Nationell ämneskategori
Pappers-, massa- och fiberteknik
Identifikatorer
URN: urn:nbn:se:ri:diva-36532Scopus ID: 2-s2.0-85064951399ISBN: 9781510874695 (tryckt)OAI: oai:DiVA.org:ri-36532DiVA, id: diva2:1265962
Konferens
Pulping Engineering and Environmental Recycling Sustainability Conference 2018: Technical Solutions for Today and Beyond, PEERS 2018; Portland; United States; 28 October 2018 through 31 October 2018
Tillgänglig från: 2018-11-26 Skapad: 2018-11-26 Senast uppdaterad: 2019-05-10Bibliografiskt granskad

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