Method for automated monitoring of pulp retention time using an

Details Method for automated monitoring of pulp retention time using an Method for automated monitoring of pulp retention time using an

1995-12-07

1998-05-26

Alvo, Steven

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

With testing, sampling or analyzing

162 61, 162238, D21C 712

Patent

active

057559287

ABSTRACT:
An automated system and method for measuring the residence time of wood pulp as it moves through various stages of processing in a pulp mill. A tracer compound comprising a neutral salt of a halogen is introduced into a first location in the path of the pulp slurry; at a second location an automated detector detects the concentration of tracer compound over a time period; a controller relays a voltage signal from the detector to a processor which uses a calibration curve to integrate tracer concentration over time and thereby derive pulp residence, between the first and second locations.

REFERENCES:
patent: 4295927 (1981-10-01), Bentvelzen et al.
patent: 4298426 (1981-11-01), Torregrossa et al.
patent: 4298427 (1981-11-01), Bentvelzen et al.
patent: 4783314 (1988-11-01), Hoots et al.
patent: 4946555 (1990-08-01), Lee et al.
patent: 5034095 (1991-07-01), Kido et al.
Vernon B. Bodenheimer, "Channeling in Bleach Towers and Friction Losses in Pulp Stock Lines", Southern Pulp and Paper Manufacturer, pp. 42-44, & 46 (1969).
J.K. Perkins, Channeling in Continuous Bleaching Cells* (Pulp Behavior Patterns in Bleach Towers), A talk given at Gulf Coast Section TAPPI, pp. 191-198 (1971).
Carlton W. Dence, et al., "Chlorination--The Bleaching of Pulp", Third Edition, Revised, TAPPI Press, pp. 29 & 62.
George Tchobanaglous, et al., "Wastewater Engineering--Treatment Disposal & Reuse", McGraw-Hill, Inc., Third Edition, pp. 1214-1216 (1991).
Manual for Orion Electrode, Orion Research Incorporated Laboratory Products Group, pp. 2-29 (1991).

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