Modelling water removal from wet fibre mats

Robert Johnston, Carl Nicholas Mitchell

Research output: Contribution to journalReview ArticleResearchpeer-review

Abstract

During vacuum dewatering on paper machines, the wet fibre mat is subjected to high frequency suction pulses. These pulses result in the wet fibre mat compressing as well as water being displaced from the pores with air. Laboratory results have indicated that the suction pulse length and suction pulse frequency can have a significant effect on the final solids content after application of suction. In order to understand the process occurring during vacuum dewatering a one-dimensional two-phase flow model was developed. The effect of process variables and wet fibre mat properties has been investigated.

Original languageEnglish
Pages (from-to)433-437
Number of pages5
JournalAppita Journal
Volume56
Issue number6
Publication statusPublished - 1 Nov 2003

Keywords

  • Dewatering
  • Drainage
  • Modelling
  • Suction
  • Vacuum

Cite this

Johnston, R., & Mitchell, C. N. (2003). Modelling water removal from wet fibre mats. Appita Journal, 56(6), 433-437.
Johnston, Robert ; Mitchell, Carl Nicholas. / Modelling water removal from wet fibre mats. In: Appita Journal. 2003 ; Vol. 56, No. 6. pp. 433-437.
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Johnston, R & Mitchell, CN 2003, 'Modelling water removal from wet fibre mats' Appita Journal, vol. 56, no. 6, pp. 433-437.

Modelling water removal from wet fibre mats. / Johnston, Robert; Mitchell, Carl Nicholas.

In: Appita Journal, Vol. 56, No. 6, 01.11.2003, p. 433-437.

Research output: Contribution to journalReview ArticleResearchpeer-review

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AU - Mitchell, Carl Nicholas

PY - 2003/11/1

Y1 - 2003/11/1

N2 - During vacuum dewatering on paper machines, the wet fibre mat is subjected to high frequency suction pulses. These pulses result in the wet fibre mat compressing as well as water being displaced from the pores with air. Laboratory results have indicated that the suction pulse length and suction pulse frequency can have a significant effect on the final solids content after application of suction. In order to understand the process occurring during vacuum dewatering a one-dimensional two-phase flow model was developed. The effect of process variables and wet fibre mat properties has been investigated.

AB - During vacuum dewatering on paper machines, the wet fibre mat is subjected to high frequency suction pulses. These pulses result in the wet fibre mat compressing as well as water being displaced from the pores with air. Laboratory results have indicated that the suction pulse length and suction pulse frequency can have a significant effect on the final solids content after application of suction. In order to understand the process occurring during vacuum dewatering a one-dimensional two-phase flow model was developed. The effect of process variables and wet fibre mat properties has been investigated.

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KW - Drainage

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JF - Appita Journal

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