Method of controlling alkaline pulping process

Details Method of controlling alkaline pulping process Method of controlling alkaline pulping process

1989-03-23

1990-01-23

Alvo, Steve

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

With testing, sampling or analyzing

162 62, 210798, 436179, D21C 712

Patent

active

048956180

ABSTRACT:
A method of controlling an alkaline pulping process, sulphate pulping in particular. The concentration of the dissolved components as well as the concentration of the recidual cooking chemical are measured. The measurements are carried out by means of an analyzer positioned outside of the cooking process in a separate liquid flow. The measuring devices are per se known detectors. The cooking process is observed and the necessary corrections are made on the basis of the measuring results.

REFERENCES:
patent: 4153547 (1979-05-01), McLean
patent: 4345913 (1982-08-01), Jonsson
patent: 4409853 (1983-10-01), Chase et al.
patent: 4540468 (1985-09-01), Genco et al.
patent: 4617131 (1986-10-01), Walker
Kesler; "Analysis of Alkaling Pulping Liquors"; Tappi, vol. 46, No. 7, Jul. 1963, pp. 442-445.

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