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School of Chemical Technology
Degree Programme of Forest Products Technology
Simo Hoikkala
ANALYSIS OF VARIOUS PAPER-MAKING CHEMISTRY MANAGEMENT
CASES BY MODELLING AND SIMULATION
Masters thesis for the degree of Master of Science in Technology
submitted for inspection, Espoo, 5 October, 2011.
Supervisor Professor Jouni Paltakari
Instructor D.Sc. (Tech.) Erkki R辰s辰nen
School of Chemical Technology
Degree Programme of Forest Products Technology
Abstract of Masters Thesis
Author
Simo Hoikkala
Title of Thesis
Analysis of Various Paper-making Chemistry Management Cases by
Modelling and Simulation
Abstract
Simulation can be used to study processes and their properties. Although many
simulation programmes are available for the paper and pulp industry, a programme
that focuses on process water has not been developed. Because of this, Kemira
R&D decided to build its own simulation tool. Building such a tool from scratch
requires documentation and test usage.
The purpose of this thesis was to document and study the utilisation of the self-
made simulation tool for modelling paper, pulp and water treatment processes. The
models in the simulation tool were written with C++ and the simulations were made
with the LabView programme. In the applied part, the first experiment was to study
water circulation in a paper-making process and the formed deposits in the water
circulation. The first experiment also studied the effect of the coating change to the
deposits. The second experiment studied the biocide feeding sequences in a four-
tank system.
The utilisation of the simulation proved useful in problem-solving situations in
which there was no possibility for trial runs. In the first experiment, the simulation
verified that high oxalate level was the problem source of the deposits in the
papermaking process. The second experiment revealed that the best feeding
sequences were fed at the beginning of the process.
Chair Chair code
Paper technology Puu-21
Supervisor Pages
Professor Jouni Paltakari 68 + 4
Instructor Language
D.Sc. (Tech.) Erkki R辰s辰nen English
Keywords Date
Paper process, biocide, simulation 5 October 2011
Kemian tekniikan korkeakoulu
Puunjalostustekniikan tutkinto-ohjelma
Diplomity旦n tiivistelm辰
Tekij辰
Simo Hoikkala
Diplomity旦n nimi
Erilaisten paperinvalmistuksen kemian hallintaan liittyvien tapausten
analysointi mallinnuksella ja simuloinnilla
Tiivistelm辰
Simulointia voidaan k辰ytt辰辰 prosessien ja niiden ominaisuuksien tutkimiseen. Paperi-
ja selluteollisuuden prosessien simulointiin on saatavilla useita ohjelmia mutta
ohjelmaa, joka olisi keskittynyt prosessivesiin, ei ole saatavilla. T辰st辰 johtuen Kemira
T&K:ss辰 p辰辰dyttiin rakentamaan oma simulointity旦kalu. Simulointity旦kalun
rakentaminen alusta l辰htien vaatii dokumentointia sek辰 koek辰ytt旦辰.
T辰m辰n ty旦n tarkoitus oli dokumentoida ja tutkia itserakennetun simulointity旦kalun
k辰ytt旦辰 paperi-, sellu- ja vedenpuhdistusprosessien mallinnukseen. Simuloinnissa
k辰ytetyt mallit tehtiin C++ kiell辰, mallien k辰ytt旦辰 ja yll辰pitoa ajatellen. Simuloinnit
suoritettiin LabView ohjelmalla. Soveltavassa osassa ensimm辰isen辰
tutkimuskohteena oli paperikoneen vesikierto ja siin辰 muodostuva sakka, sek辰
p辰辰llysteen vaihdon vaikutus sakkaan muodostukseen. Toisena tutkimuskohteena oli
biosidin sy旦tt旦sekvenssit nelj辰n s辰ili旦n systeemiss辰.
Simuloinnin k辰ytt旦 osoittautui hy旦dylliseksi ongelman ratkaisutilanteissa, joissa ei
ollut mahdollisuutta tehd辰 tehdasmittakaavan koeajoja. Simuloinnin avulla voitiin
varmistaa korkean oksalaattipitoisuuden sakan muodostumisen ongelmal辰hteeksi
paperinvalmistusprosessissa. Toisessa tutkimuskohteessa havaittiin parhaat
biosidipitoisuudet prosessisa, kun biosidin sy旦tettiin prosessin alkup辰辰n s辰ili旦ihin.
Professuurin nimi Professuurin koodi
Paperitekniikka Puu-21
Ty旦n valvoja Sivum辰辰r辰
Professori Jouni Paltakari 68 + 4
Ty旦n ohjaaja Kieli
TkT Erkki R辰s辰nen englanti
Avainsanat P辰iv辰ys
Paperiprosessi, biosidi, simulointi 5.10.2011
Abstract - Simo Hoikkala

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Abstract - Simo Hoikkala

  • 1. School of Chemical Technology Degree Programme of Forest Products Technology Simo Hoikkala ANALYSIS OF VARIOUS PAPER-MAKING CHEMISTRY MANAGEMENT CASES BY MODELLING AND SIMULATION Masters thesis for the degree of Master of Science in Technology submitted for inspection, Espoo, 5 October, 2011. Supervisor Professor Jouni Paltakari Instructor D.Sc. (Tech.) Erkki R辰s辰nen
  • 2. School of Chemical Technology Degree Programme of Forest Products Technology Abstract of Masters Thesis Author Simo Hoikkala Title of Thesis Analysis of Various Paper-making Chemistry Management Cases by Modelling and Simulation Abstract Simulation can be used to study processes and their properties. Although many simulation programmes are available for the paper and pulp industry, a programme that focuses on process water has not been developed. Because of this, Kemira R&D decided to build its own simulation tool. Building such a tool from scratch requires documentation and test usage. The purpose of this thesis was to document and study the utilisation of the self- made simulation tool for modelling paper, pulp and water treatment processes. The models in the simulation tool were written with C++ and the simulations were made with the LabView programme. In the applied part, the first experiment was to study water circulation in a paper-making process and the formed deposits in the water circulation. The first experiment also studied the effect of the coating change to the deposits. The second experiment studied the biocide feeding sequences in a four- tank system. The utilisation of the simulation proved useful in problem-solving situations in which there was no possibility for trial runs. In the first experiment, the simulation verified that high oxalate level was the problem source of the deposits in the papermaking process. The second experiment revealed that the best feeding sequences were fed at the beginning of the process. Chair Chair code Paper technology Puu-21 Supervisor Pages Professor Jouni Paltakari 68 + 4 Instructor Language D.Sc. (Tech.) Erkki R辰s辰nen English Keywords Date Paper process, biocide, simulation 5 October 2011
  • 3. Kemian tekniikan korkeakoulu Puunjalostustekniikan tutkinto-ohjelma Diplomity旦n tiivistelm辰 Tekij辰 Simo Hoikkala Diplomity旦n nimi Erilaisten paperinvalmistuksen kemian hallintaan liittyvien tapausten analysointi mallinnuksella ja simuloinnilla Tiivistelm辰 Simulointia voidaan k辰ytt辰辰 prosessien ja niiden ominaisuuksien tutkimiseen. Paperi- ja selluteollisuuden prosessien simulointiin on saatavilla useita ohjelmia mutta ohjelmaa, joka olisi keskittynyt prosessivesiin, ei ole saatavilla. T辰st辰 johtuen Kemira T&K:ss辰 p辰辰dyttiin rakentamaan oma simulointity旦kalu. Simulointity旦kalun rakentaminen alusta l辰htien vaatii dokumentointia sek辰 koek辰ytt旦辰. T辰m辰n ty旦n tarkoitus oli dokumentoida ja tutkia itserakennetun simulointity旦kalun k辰ytt旦辰 paperi-, sellu- ja vedenpuhdistusprosessien mallinnukseen. Simuloinnissa k辰ytetyt mallit tehtiin C++ kiell辰, mallien k辰ytt旦辰 ja yll辰pitoa ajatellen. Simuloinnit suoritettiin LabView ohjelmalla. Soveltavassa osassa ensimm辰isen辰 tutkimuskohteena oli paperikoneen vesikierto ja siin辰 muodostuva sakka, sek辰 p辰辰llysteen vaihdon vaikutus sakkaan muodostukseen. Toisena tutkimuskohteena oli biosidin sy旦tt旦sekvenssit nelj辰n s辰ili旦n systeemiss辰. Simuloinnin k辰ytt旦 osoittautui hy旦dylliseksi ongelman ratkaisutilanteissa, joissa ei ollut mahdollisuutta tehd辰 tehdasmittakaavan koeajoja. Simuloinnin avulla voitiin varmistaa korkean oksalaattipitoisuuden sakan muodostumisen ongelmal辰hteeksi paperinvalmistusprosessissa. Toisessa tutkimuskohteessa havaittiin parhaat biosidipitoisuudet prosessisa, kun biosidin sy旦tettiin prosessin alkup辰辰n s辰ili旦ihin. Professuurin nimi Professuurin koodi Paperitekniikka Puu-21 Ty旦n valvoja Sivum辰辰r辰 Professori Jouni Paltakari 68 + 4 Ty旦n ohjaaja Kieli TkT Erkki R辰s辰nen englanti Avainsanat P辰iv辰ys Paperiprosessi, biosidi, simulointi 5.10.2011