Procedure for controlling cellulose digestion

Details Procedure for controlling cellulose digestion Procedure for controlling cellulose digestion

G - Physics

01

N

9/2

G01N 27/416 (2006.01) G01N 27/30 (2006.01) G01N 33/34 (2006.01)

Patent

CA 1281510

ABSTRACT OF THE DISCLOSURE A procedure for controlling cellulose digestion by measuring activity of chemicals essentially influencing the cellulose digestion and which are present in a cellulose digester, Feeding of chemicals to be added into the cellulose digester is controlled on the basis of the measurement results. The measurement is carried out by placing, in the cellulose digester, one or several measuring electrodes and reference electrodes, and a current-supplying counterelectrode. Current is supplied to the thus-established circuit from a current source, in a manner such that the voltage across the measuring electrode and the reference electrode, in other words the electrochemical potential of the measuring electrode, is substantially constant. The current intensity corresponding to such potential is directly proportional to activity of the chemicals in the cellulose digester. A method for measuring the cellulose digestive activity is also provided in accordance with the present invention.

546233

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