If you have difficulties reading this email, click here

Si vous éprouvez des difficultés à lire ce courriel, cliquez ici

Online Chip Properties Measurements – Opportunities for Digester Optimization
Organized by the PAPTAC Alkaline Pulping Committee / Organisé par le Comité PAPTAC de la pâte alcaline

Join this Committee / Joindre ce Comité

  When / quand: October 20, 2022 / 14:00 – 15:00 ET Registration / inscription:
  Free / Gratuit
  Speaker / Conférencier:
Thanh Trung, President and Executive Director,
FITNIR Analyzers Inc.

Click here to register

The online measurement of wood chip properties has been highly sought after for the pulp manufacturer. Wood chips varies in size, moisture content, species, density, lignin content, extractives, etc.. Furthermore, depending on the storage conditions and seasonality, chip quality can further change this biological raw material. Yet, it is one of the major inputs into the digester, along with white liquor, and could have a tremendous impact on the production rate and product quality. Furthermore, wood-chip cost is a major factor on pulp production costs.

This seminar will cover some of the previous and existing analyzers for chip properties measurements. We will discuss the use of a novel online NIR-based analyzer for measurements of woodchip moisture content and how it can be used to calculate the dry mass flow of wood chips entering the digester. This information has been used as feedforward data for production rate control with great gains. Measurements of liquor properties, including white liquor (WL) and Weak Black Liquor (WBL) for residual alkali can provide necessary information for feedback control.

Finally, we will show and discuss some of the latest results on the development of online measurements of woodchip properties, such as basic density, bulk density, soluble lignin, and total extractives.

As the industry moves forward and adopt new measurement technologies that provide fundamental properties of the raw materials and process chemistry, optimization and semi-autonomous operations could be possible.


Thanh Trung
President and Executive Director
FITNIR Analyzers Inc.


Throughout his more than 23 years of experience in the pulp and paper industry, Thanh Trung has amassed a high-level of technical expertise in advanced vibrational spectroscopy as well as garnered extensive knowledge and experience in mill operations. Thanh’s research focus has been on the development of online spectroscopic sensors and process analyzers for industrial applications to address key energy issues of fundamental infrastructure such as recovery boilers, power boilers and lime kilns. Prior to joining FITNIR, Thanh was a Senior Research Scientist with FPInnovations (formerly Paprican) for 20 years. His pioneering efforts with FPInnovations in developing novel applications for the pulp and paper industry led to numerous inventorships and co-inventorships of U.S. and International patents. Thanh has also authored over 50 papers relating to pulp and paper applications, has been a guest editor of Canadian and international journals, and continues to contribute to the industry in chemical pulping, chemical recovery, and the integration of process measurements to reduce costs and improve product quality. Thanh obtained a B.Sc., Honours, in chemistry, specializing in analytical chemistry at the University of British Columbia. He is a member of Pulp and Paper Technical Association (PAPTAC), TAPPI, Applied Spectroscopy Society, American Chemical Association (ACS), Chemical Society of Canada, and the Near-Infrared Spectroscopy Society.


PAPTAC: 6300 Ave Auteuil, Suite 440, Brossard, QC J4Z 3P2 - Tel: (514) 392-0265 - Fax: (514) 392-0369 - Email: [email protected]