Measurements needed for on-line control of retention and drainage

Allan M. Springer; Jeffrey S. Noe; T. H. Wegner

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Measurements needed for on-line control of retention and drainage

Informally Refereed

Authors:

Allan M. Springer, Jeffrey S. Noe, T. H. Wegner

Year:

1987

Type:

Miscellaneous Publication

Station:

Forest Products Laboratory

Source:

Tappi journal. Vol. 70, no. 4 (Apr. 1987): pages 125-128.

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Abstract

In a retention and drainage control strategy, it is necessary to monitor the concentration of dissolved inorganic material and the concentration of dissolved and colloidal organic material. Conductivity is successful as a sensor to monitor inorganic material. We studied TOC as a means to monitor dissolved and colloidal organic material and found it to work well. Both conductivity and TOC have limitations, and pH, consistency, and temperature need to be controlled.

Keywords

Retention, drainage, electrical conductance, conductivity, process control, paper machines, total organic carbon

Citation

Springer, Allan M.; Noe, Jeffrey S.; Wegner, T. H. 1987. Measurements needed for on-line control of retention and drainage. Tappi journal. Vol. 70, no. 4 (Apr. 1987): pages 125-128.