método de monitoramento de macropartículas coloidais (macrostickies) no processo de reciclagem e de fabricação de papel ou tecido envolvendo polpa reciclada

• Main Authors: SERGEY M. SHEVCHENKO, MICHAEL J. MURCIA, BRETT BROTHERSON, WILLIAM A. VON DRASEK
• Format: Patent
• Language: Portuguese
• Published: 04.07.2017
• Subjects: APPARATUS THEREFOR; IMPREGNATING OR COATING OF PAPER; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PAPER NOT OTHERWISE PROVIDED FOR; PAPER-MAKING; PHYSICS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; PRODUCTION OF CELLULOSE; PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS; PULP COMPOSITIONS; REGENERATION OF PULPING LIQUORS; TESTING; TEXTILES; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G

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>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.