CAUSES OF POOR DREGS SETTLING IN A GREEN LIQUOR CLARIFIER, 19PEERS



A study was conducted to examine the most likely parameters responsible for poor dregs settling at a Canadian mill over a 2.5-year period, using a multivariate data analysis (MVDA) program. Also, compositions of dregs, black liquor and lime mud were used to identify correlations with impaired dregs settling. The results show that poor dregs settling strongly correlates with high silicone (Si) content in dregs and moderately correlates with high iron (Fe) and high aluminum (Al) contents, and with low bulk density in dregs. The dregs settling behavior seems to be seasonally influenced, implying that wood quality variation can be a factor. The results from the MVDA show that poor dregs settling is correlated to incomplete combustion and/or low load conditions in the recovery boiler, and low sulfidity in the causticizing plant. For mills that experience dregs settling or green liquor filtering issues, regular compositional analyses of dregs, green liquor, weak wash, and black liquor are recommended in order to monitor the dynamics of silicon and other constituents in the recovery cycle. 

TAPPI conference proceedings and presentations, technical papers, and publication articles provide technical and management data and solutions on topics covering the Pulp, Paper, Tissue, Corrugated Packaging, Flexible Packaging, Nanotechnology and Converting Industries.

Simply select the quantity, add to your cart and your conference paper, presentation or article will be available for immediate download.

Picture of the productCAUSES OF POOR DREGS SETTLING IN A GREEN LIQUOR CLARIFIER, 1
CAUSES OF POOR DREGS SETTLING IN A GREEN LIQUOR CLARIFIER, 19PEERS

Regular price: 35.00
Discounted member price: 0.00
Quantity   

 View Cart

New Releases

TAPPI PRESS Catalog eBook 2024


Experience the Power of Publications in the 2024 TAPPI Press Catalog


Open


 

Kraft Recovery Boilers, Third Edition  


Sponsored by the Recovery Boiler Program R&D Subcommittee of the American Forest & Paper Association (AF&PA) and published by TAPPI Press.


Purchase


 

Handbook For Pulp and Paper Technologists (The SMOOK Book), Fourth Edition

The best-selling text to introduce the entire technology of pulp and paper manufacture.

Purchase

 

Guidelines for Safe Assessment and Operation of Yankee Dryers  


A project of the Yankee Dryer Safety & Reliability Committee.

Purchase

 

Check our newest additions.


TAPPI Press offers some of the most in-depth resources and references for the forest products and related industries. 

See More

   
 

Available for Purchase – Conference Proceedings


TAPPI maintains a record of key conference papers, presentations, and other conference publications, available for purchase in a variety of formats.

See More