Displacement washing of softwood pulp cooked to various levels of residual lignin content

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F21%3A39917492" target="_blank" >RIV/00216275:25310/21:39917492 - isvavai.cz</a>

Result on the web

<a href="https://imisrise.tappi.org/TAPPI/Products/21/SEP/21SEP553.aspx" target="_blank" >https://imisrise.tappi.org/TAPPI/Products/21/SEP/21SEP553.aspx</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.32964/TJ20.9.553" target="_blank" >10.32964/TJ20.9.553</a>

Result language

angličtina

Original language name

Displacement washing of softwood pulp cooked to various levels of residual lignin content

Original language description

This study investigates the influence of the degree of delignification of kraft spruce pulp cooked at seven different kappa numbers, ranging from 18.1 to 50.1, on the efficiency of displacement washing under laboratory conditions. Although the pulp bed is a polydispersive and heterogeneous system, the correlation dependence of the wash yield and bed efficiency on the Peclet number and the kappa number of the pulp showed that washing efficiency increased not only with an increasing Peclet number, but also with an increasing kappa number. The linear dependence between the mean residence time of the solute lignin in the bed and the space time, which reflects the residence time of the wash liquid in the pulp bed, was found for all levels of the kappa number. Washing also reduced the kappa number and the residual lignin content in the pulp fibers. Application: Of the basic brownstock washing operations, displacement washing is the most important and effective mechanism, and washing equipment is designed with emphasis on it. The information in this paper will enrich resources related to pulp washing that can impact end-product quality. Application: Of the basic brownstock washing operations, displacement washing is the most important and effective mechanism, and washing equipment is designed with emphasis on it. The information in this paper will enrich resources related to pulp washing that can impact end-product quality.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20502 - Paper and wood

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

TAPPI Journal

ISSN

0734-1415

e-ISSN

—

Volume of the periodical

20

Issue of the periodical within the volume

9

Country of publishing house

US - UNITED STATES

Number of pages

11

Pages from-to

553-563

UT code for WoS article

000705303400002

EID of the result in the Scopus database

2-s2.0-85117051069