TEXO’s online wood chip measurement system and digester APC controls
TEXO’s online wood chip measurement system and digester APC controls stabilize cooking conditions
TEXO Consulting & Controls Inc. of Baie D’Urfé, Québec, Canada has introduced its Chip Management System (CMS) that provides online, real‐time measurement of many important chip properties on the
chip conveyor. TEXO’s COOK‐X advanced process controls (APC) use the measurements to manage chip filling, alkali to wood charging and stabilize digester cooking conditions.
CMS measures chip mass flow, moisture, volume, dry bulk density and bark content. The measurement system was developed by Centre de Recherche Industrielle du Québec (CRIQ). The patented chip measurements and APC controls have been successfully commissioned at a Canadian Kraft pulp mill. The results are encouraging as impregnation vessel and continuous hydraulic digester level s have been stabilized, liquor to wood ratio is controlled to target and Kappa number variability has been reduced. The measurements allow flash steam use to be optimized in the pre‐steaming operation, while reducing venting to the atmosphere, allowing displaced fresh steam to be used in the mill’s turbine. This provides an extra 2 MW of electricity to be sold on the grid. The ultimate purpose is to control the digester blow line Kappa number and achieve stability in power production.
The TEXO real‐time chip measurement system is located above the conveyor. TEXO Consulting and Controls experienced team of engineers implements value‐added advanced process control solutions to tackle issues with raw material quality, energy consumption or chemical demand in the pulp and paper industry. The solutions optimize the performance of capital assets and capture best‐practice operational expertise.
For more information contact:
Laurier Morissette,
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TEXO Consulting & Controls Inc.
102 Victoria, Baie d’Urfé, QC H9X 2H4
Phone: (514) 791-6622 Fax: (514) 221-2206
www.texo-cc.com
