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Process Control in Pulp and Paper Production

Date:

Vertical: Pulp and Paper

Organizations: Knick

Numerous pH and conductivity sensors must ensure process quality at the various production stages during pulp production. Chemical pulping that is too intensive, or dosages of bleaching agents and residue that have not been monitored sufficiently, can damage fibers easily and reduce their strength, especially during boiling or bleaching. Such damage can only be detected in final quality controls, in which the cardboard or paper is tested for tear length, tear strength, and resistance to bursting. The intensity of the chemical pulping must therefore be monitored and regulated. This is done using conductivity measurements, in which the white liquor concentration in the pulp boilers is monitored.

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