On-Line Pulp Quality Information

Olli Saarela, Ari Poukka

Research output: Contribution to conferenceConference AbstractScientific

Abstract

Production of pulp from wood is a significant industrial activity in Finland. In 2015, more than 7 million tonnes of pulp was produced in Finland. Important pulp quality parameters include brightness, dirt level, fibre length distribution, and the potential of forming strong and even fibre network. On-line measurements for the first three are available, but the fourth one related to bonding and fibre strength can only be measured in laboratory. In laboratory analyses, the pulp sample is first refined, then made into a paper sheet, dried, and finally measured. This takes time and incurs expenses, both factors limiting the number of analyses that can be carried out. Furthermore, laboratory analyses have been found to include a level of measurement noise that is not small enough in relation to the actual quality variation of pulp. All these factors together make the laboratory analyses less than ideal for pertinent quality control. A new on-line measure of pulp quality was developed and named Botnia FOX. Evident connections have been demonstrated between Botnia FOX and paper/board machine operation. Depending on the control strategy of each paper/board machine, e.g. whether pulp is refined to constant freeness or with constant specific energy consumption, the connections have been observed in one or more parameters like pulp consumption, paper/board machine runnability, energy consumption, and quality variables of the produced paper.
Original languageEnglish
Number of pages2
Publication statusPublished - 2017
EventAutomaatiopäivät22 - Vaasa, Finland
Duration: 23 Mar 201724 Mar 2017

Seminar

SeminarAutomaatiopäivät22
CountryFinland
CityVaasa
Period23/03/1724/03/17

Fingerprint

pulp
Finland
specific energy
quality control

Keywords

  • pulp manufacturing
  • quality
  • industrial internet

Cite this

Saarela, O., & Poukka, A. (2017). On-Line Pulp Quality Information. Abstract from Automaatiopäivät22, Vaasa, Finland.
Saarela, Olli ; Poukka, Ari. / On-Line Pulp Quality Information. Abstract from Automaatiopäivät22, Vaasa, Finland.2 p.
@conference{99e7c63d94d042d99c5b12ddd8182319,
title = "On-Line Pulp Quality Information",
abstract = "Production of pulp from wood is a significant industrial activity in Finland. In 2015, more than 7 million tonnes of pulp was produced in Finland. Important pulp quality parameters include brightness, dirt level, fibre length distribution, and the potential of forming strong and even fibre network. On-line measurements for the first three are available, but the fourth one related to bonding and fibre strength can only be measured in laboratory. In laboratory analyses, the pulp sample is first refined, then made into a paper sheet, dried, and finally measured. This takes time and incurs expenses, both factors limiting the number of analyses that can be carried out. Furthermore, laboratory analyses have been found to include a level of measurement noise that is not small enough in relation to the actual quality variation of pulp. All these factors together make the laboratory analyses less than ideal for pertinent quality control. A new on-line measure of pulp quality was developed and named Botnia FOX. Evident connections have been demonstrated between Botnia FOX and paper/board machine operation. Depending on the control strategy of each paper/board machine, e.g. whether pulp is refined to constant freeness or with constant specific energy consumption, the connections have been observed in one or more parameters like pulp consumption, paper/board machine runnability, energy consumption, and quality variables of the produced paper.",
keywords = "pulp manufacturing, quality, industrial internet",
author = "Olli Saarela and Ari Poukka",
note = "Project code: 114483 ; Automaatiop{\"a}iv{\"a}t22 ; Conference date: 23-03-2017 Through 24-03-2017",
year = "2017",
language = "English",

}

Saarela, O & Poukka, A 2017, 'On-Line Pulp Quality Information' Automaatiopäivät22, Vaasa, Finland, 23/03/17 - 24/03/17, .

On-Line Pulp Quality Information. / Saarela, Olli; Poukka, Ari.

2017. Abstract from Automaatiopäivät22, Vaasa, Finland.

Research output: Contribution to conferenceConference AbstractScientific

TY - CONF

T1 - On-Line Pulp Quality Information

AU - Saarela, Olli

AU - Poukka, Ari

N1 - Project code: 114483

PY - 2017

Y1 - 2017

N2 - Production of pulp from wood is a significant industrial activity in Finland. In 2015, more than 7 million tonnes of pulp was produced in Finland. Important pulp quality parameters include brightness, dirt level, fibre length distribution, and the potential of forming strong and even fibre network. On-line measurements for the first three are available, but the fourth one related to bonding and fibre strength can only be measured in laboratory. In laboratory analyses, the pulp sample is first refined, then made into a paper sheet, dried, and finally measured. This takes time and incurs expenses, both factors limiting the number of analyses that can be carried out. Furthermore, laboratory analyses have been found to include a level of measurement noise that is not small enough in relation to the actual quality variation of pulp. All these factors together make the laboratory analyses less than ideal for pertinent quality control. A new on-line measure of pulp quality was developed and named Botnia FOX. Evident connections have been demonstrated between Botnia FOX and paper/board machine operation. Depending on the control strategy of each paper/board machine, e.g. whether pulp is refined to constant freeness or with constant specific energy consumption, the connections have been observed in one or more parameters like pulp consumption, paper/board machine runnability, energy consumption, and quality variables of the produced paper.

AB - Production of pulp from wood is a significant industrial activity in Finland. In 2015, more than 7 million tonnes of pulp was produced in Finland. Important pulp quality parameters include brightness, dirt level, fibre length distribution, and the potential of forming strong and even fibre network. On-line measurements for the first three are available, but the fourth one related to bonding and fibre strength can only be measured in laboratory. In laboratory analyses, the pulp sample is first refined, then made into a paper sheet, dried, and finally measured. This takes time and incurs expenses, both factors limiting the number of analyses that can be carried out. Furthermore, laboratory analyses have been found to include a level of measurement noise that is not small enough in relation to the actual quality variation of pulp. All these factors together make the laboratory analyses less than ideal for pertinent quality control. A new on-line measure of pulp quality was developed and named Botnia FOX. Evident connections have been demonstrated between Botnia FOX and paper/board machine operation. Depending on the control strategy of each paper/board machine, e.g. whether pulp is refined to constant freeness or with constant specific energy consumption, the connections have been observed in one or more parameters like pulp consumption, paper/board machine runnability, energy consumption, and quality variables of the produced paper.

KW - pulp manufacturing

KW - quality

KW - industrial internet

M3 - Conference Abstract

ER -

Saarela O, Poukka A. On-Line Pulp Quality Information. 2017. Abstract from Automaatiopäivät22, Vaasa, Finland.