Publikace detail

An Influence of Pulp Consistency upon the Efficiency of Displacement Washing

Autoři: Arora Shelly | Potůček František

Rok: 2011

Druh publikace: článek ve sborníku

Název zdroje: Proceedings of the 38th International Conference of Slovak Society of Chemical Engineering

Název nakladatele: Slovenská technická univezita v Bratislave

Místo vydání: Bratislava

Strana od-do: 293-300

Tituly:

Jazyk	Název	Abstrakt	Klíčová slova
cze	Vliv konzistence buničiny na prací účinek	Byl navržen matematický model praní buničiny založený na sledování hodnot bezrozměrných kriterií, jako je Pecletovo číslo a Biotovo číslo. Praní se provádělo v lAboratorní prací cele. Experimentální a spočtené údaje byly mezi sebou porovnány.	matematické modelování; vytěsňovací praní; jehličnanová buničina
eng	An Influence of Pulp Consistency upon the Efficiency of Displacement Washing	A mathematical model assuming an axial dispersion mechanism, based on two dimensionless criteria, namely the Péclet number and the Biot number, was proposed for displacement washing of packed bed of porous, compressible, and cylindrical particles. Bulk fluid concentration, intra-pore solute concentration, and concentration of the solute adsorbed onto the fiber surface were considered as a function of the washing time and of position in the bed. Displacement washing experiments performed on pulp beds formed from unbeaten, unbleached kraft fibers were simulated with a laboratory washing cell. The model predicted values of the breakthrough curves, the average alkali lignin concentration in the bed, and the displacement ratio were compared with those obtained experimentally. A close agreement was found between experimental data and ones calculated from model equations.	mathematical modelling; displacement washing; softwood pulp

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