Paper making and fiber liberation – Apparatus – Measuring – testing – inspecting – indicating or illuminating
Patent
1988-01-14
1989-12-26
Alvo, Steve
Paper making and fiber liberation
Apparatus
Measuring, testing, inspecting, indicating or illuminating
162253, 162258, 162DIG10, 68205R, D21C 902, D21C 906
Patent
active
048895997
ABSTRACT:
A method and apparatus for monitoring and controlling the operation of a counter-current pulp washing system. The dilution factor, soda loss, wash liquor ratio and displacement ratio of the washing system are determined on-line. The value of either the soda loss or of dilution factor is continuously maintained within a preselected range and changes in the value of the other variable are monitored to provide an indication of whether the washing system is operating optimally. Based on the on-line determination of displacement ratio and wash liquor ratio, the efficiency of the washers is monitored, the cause of any decrease in efficiency is identified and the appropriate control action is applied to adjust the operating parameters of the washers to compensate for changed washing conditions or changed processing conditions.
REFERENCES:
patent: 4096028 (1978-06-01), Rosenberger
patent: 4138313 (1979-02-01), Hillstrom et al.
patent: 4746405 (1988-05-01), Lisnyansky et al.
DeBerry; "How to Measure Washer Sodium Loss More Accurately", Tappi, Jul. 1980, vol. 63, No. 7; p. 123.
South et al.; "High-Efficiency Brownstock Washer Systems", Tappi, May 1978, vol. 61, No. 5; p. 61.
Blecha William E.
Lisnyansky Khaim
Alvo Steve
International Paper Company
Kennard Wayne M.
LandOfFree
Apparatus for continuously measuring the soda loss in a pulp was does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for continuously measuring the soda loss in a pulp was, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for continuously measuring the soda loss in a pulp was will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1575834