Ecolab USA Inc.

Nalco Company

Brett Brotherson

Peter E Reed

Mingli Wei

William A Von Drasek

Xiaojin Harry Li

Sergey M Shevchenko

Michael J Murcia

William J Andrews

A challenge in using recycled material in the papermaking process is the presence of hydrophobic organics with adhesive properties commonly known as 'stickies.' Hydrophobic agglomerates can result in spots or defects in the final paper product or deposit on papermaking equipment resulting in poor runnability and downtime. Technologies for monitoring and controlling microstickies exist. However, a need exists for a technique to rapidly determine the size and content of macrostickies (diameter&#x3e;100 microns) in recycled pulp process streams. The present invention is a device and method to perform real-time macrostickies and/or any visible hydrophobic particle analysis in an aqueous medium. Using the present invention, furnish quality can be monitored and treatment performance can be monitored and controlled. The technique is based on fluorescence image analysis to identify and count sticky particles as well as measure their size.

Method of monitoring macrostickies in a recycling and paper or tissue making process involving recycled pulp

Disclosed herein are methods of increasing retention and drainage in papermaking processes using high molecular-weight, water-soluble polymers.

Methods for increasing retention and drainage in papermaking processes

Growing community of inventors

Lisle, IL, United States of America

Brett Brotherson