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

The result's identifiers

  • 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>

Alternative languages

  • 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

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    20502 - Paper and wood

Result continuities

  • Project

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2021

  • Confidentiality

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

Data specific for result type

  • 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