Patents Assigned to Afora OY
  • Method of controlling alkaline pulping process
    Patent number: 4895618
    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.
    Type: Grant
    Filed: March 23, 1989
    Date of Patent: January 23, 1990
    Assignee: Afora OY
    Inventors: Panu Tikka, Nils-Erik Virkola