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Journal articles
Magazine articles
Open Access
How to use total dissolved solids measurements to evaluate the performance of diffuser washers—A mill study, TAPPI Journal April 2020

ABSTRACT: Various types of pulp washing equipment are available. Each washing device has a unique mechanical construction, and the washing principle is often a combination of dilution, thickening, and displacement washing. In this work, the performance of the pressure diffuser washer is studied. In stepwise trials, the effect of the feed and discharge consistencies on the performance of the diffuser was studied. The effect of the downward velocity of the screen on the pressure diffuser’s washing efficiency was also studied. The measurement of total dissolved solids (TDS) by a process refractometer was used as a wash loss measurement unit and the refractometer’s results were used in the calculations of standardized Nordén efficiency (E10) values. The chemical oxygen demand (COD) and conductivity values were also measured and their results compared to the TDS results.The results indicated that feed consistency has a significant effect on the performance and effectiveness of the diffuser washers in the mill. It can also be stated that when the downward velocity of the screen is adjusted to too high a level, the washing efficiency of the pressure diffuser decreases. As a conclusion from the mill tests, it can be stated that even small process parameter changes can provide enhanced diffuser washing at the beginning of the washing line, which has a direct effect on the performance of post-oxygen washing.

Magazine articles
Open Access
A financial analysis of north american pulp and paper companies, TAPPI JOURNAL, July 2000, Vol. 83(7)

A financial analysis of north american pulp and paper companies, TAPPI JOURNAL, July 2000, Vol. 83(7)

Magazine articles
Open Access
Managing technology - a critical contribution to competitiveness, TAPPI JOURNAL, June 2000, Vol. 83(6)

Managing technology - a critical contribution to competitiveness, TAPPI JOURNAL, June 2000, Vol. 83(6)

Magazine articles
Open Access
Mount st. helens - 20 years of recovery, TAPPI JOURNAL, May 2000, Vol. 83(5)

Mount st. helens - 20 years of recovery, TAPPI JOURNAL, May 2000, Vol. 83(5)

Magazine articles
Open Access
Health check: market pulp, TAPPI JOURNAL, November 2000, Vol. 83(11)

Health check: market pulp, TAPPI JOURNAL, November 2000, Vol. 83(11)

Magazine articles
Open Access
Pitfalls of trading market pulp on the internet, TAPPI JOURNAL, November 2000, Vol. 83(11)

Pitfalls of trading market pulp on the internet, TAPPI JOURNAL, November 2000, Vol. 83(11)

Magazine articles
Open Access
Annual chip excellence award recognizes suppliers, TAPPI JOURNAL, November 2000, Vol. 83(11)

Annual chip excellence award recognizes suppliers, TAPPI JOURNAL, November 2000, Vol. 83(11)

Magazine articles
Open Access
Modeling trs and so2 emissions from a kraft recovery boiler using an artificial neural network, TAPPI JOURNAL, November 2000, Vol. 83(11)

Modeling trs and so2 emissions from a kraft recovery boiler using an artificial neural network, TAPPI JOURNAL, November 2000, Vol. 83(11)

Magazine articles
Open Access
A novel application of tappi t 277 to determine macro stickies disintegration and agglomeration in the recycle process, TAPPI JOURNAL, November 2000, Vol. 83(11)

A novel application of tappi t 277 to determine macro stickies disintegration and agglomeration in the recycle process, TAPPI JOURNAL, November 2000, Vol. 83(11)

Magazine articles
Open Access
The role of science in setting the environmental agenda, TAPPI JOURNAL, September 2000, Vol. 83(9)

The role of science in setting the environmental agenda, TAPPI JOURNAL, September 2000, Vol. 83(9)

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