Active Retention Control and Reduced Ash Variability using Advanced Process Control, PaperCon2017

Retention management is critical for maintaining the wet end stability of paper machines and theretention level is decided based on the paper grade being produced as well as economic objectives. Thedesired retention is achieved through the addition of chemicals such as retention aids, polymers as wellas fillers with clay content. It is also desirable to maintain a consistent ash content and limit its variabilityso as to improve the machine runnability. While high retention levels are preferred, chemical costs anddesired paper quality constrain the addition of chemicals. ABB’s advanced process control (APC) forretention solves this constrained multivariable control problem by optimally dosing the chemicals,thereby achieving the required retention and stable ash. In this paper, we present this APC scheme anddemonstrate its efficacy through results obtained from an Indonesian paper mill. The APC solution,implemented on ABB’s 800xA APC platform, was able to achieve a 10% reduction in clay dosage, 15%reduction in polymer dosage and a 20% reduction in the retention chemicals dosage, resulting insubstantially lower annual production costs. The ash content was also stabilized, which significantlyreduced the down time due to sheet breaks.

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.

Author: Abhay Anand, Abhijit Badwe, and Ramesh Satini
Active Retention Control and Reduced Ash Variability using A
Active Retention Control and Reduced Ash Variability using Advanced Process Control, PaperCon 2017

New Releases

TAPPI PRESS Catalog eBook 2024

Experience the Power of Publications in the 2024 TAPPI Press Catalog



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.



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.



Guidelines for Safe Assessment and Operation of Yankee Dryers  

A project of the Yankee Dryer Safety & Reliability Committee.



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