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Experiments and modeling of pulp mat...

Wang, Jinsong.

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Experiments and modeling of pulp mat formation.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Experiments and modeling of pulp mat formation./
Author:	Wang, Jinsong.
Description:	97 p.
Notes:	Source: Dissertation Abstracts International, Volume: 64-06, Section: B, page: 2796.
Contained By:	Dissertation Abstracts International64-06B.
Subject:	Engineering, Chemical. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=NQ80805
ISBN:	061280805X

Experiments and modeling of pulp mat formation.
Wang, Jinsong.

Experiments and modeling of pulp mat formation. - 97 p.

Source: Dissertation Abstracts International, Volume: 64-06, Section: B, page: 2796.

Thesis (Ph.D.)--McMaster University (Canada), 2002.

In this dissertation, new insights into dispersed air, surfactant and defoamer effects on pulp mat formation in brownstock washing are described based on extensive experimental research. Observations of bubble behavior and channel formation are used to explain the relationship between the presence of dispersed air and the resulting low water drainage rates from the pulp pad. The work provides new understanding of the mechanism of dispersed air effect on pulp washing.

ISBN: 061280805XSubjects--Topical Terms:

1018531
Engineering, Chemical.

Experiments and modeling of pulp mat formation.
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020 $a 061280805X
035 $a (UnM)AAINQ80805
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100 1 $a Wang, Jinsong. $3 1933746
245 1 0 $a Experiments and modeling of pulp mat formation.
300 $a 97 p.
500 $a Source: Dissertation Abstracts International, Volume: 64-06, Section: B, page: 2796.
500 $a Adviser: A. Hrymak.
502 $a Thesis (Ph.D.)--McMaster University (Canada), 2002.
520 $a In this dissertation, new insights into dispersed air, surfactant and defoamer effects on pulp mat formation in brownstock washing are described based on extensive experimental research. Observations of bubble behavior and channel formation are used to explain the relationship between the presence of dispersed air and the resulting low water drainage rates from the pulp pad. The work provides new understanding of the mechanism of dispersed air effect on pulp washing.
520 $a A new pulp mat water permeability model is also included in this dissertation. The model covers a wider pulp fiber concentration range than previous models in the literature.
520 $a A systematic experimental investigation of pulp mat formation from dilute suspensions provides concentration profiles and mat thickness as a function of time. Dynamic fiber concentration profiles along the mat formation direction were inferred from standard images using a grayscale analysis calibrated against a set of known concentrations. A modified semi-empirical filtration model, based on the work of Tiller et al, was applied to compressible porous pulp fiber mat formation, and fits the experimental results very well. With this newly developed model, it is easy to calculate the capacity of a pulp washer at varied operating conditions. This model can be used for process optimization and control and make it possible to further improve the pulp washer efficiency.
590 $a School code: 0197.
650 4 $a Engineering, Chemical. $3 1018531
650 4 $a Agriculture, Wood Technology. $3 1031154
690 $a 0542
690 $a 0746
710 2 0 $a McMaster University (Canada). $3 1024893
773 0 $t Dissertation Abstracts International $g 64-06B.
790 1 0 $a Hrymak, A., $e advisor
790 $a 0197
791 $a Ph.D.
792 $a 2002
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=NQ80805