Wood chip physical quality definition and measurement

offline measurement cannot be used to stabilize, predict, and optimize processes, this evaluation can seldom be used in the industry. In this paper, chip quality will be defined on the basis of online measurement results, and thus should have a broad range of applications. In order to model this definition, a series of TMP experiments have been performed at CIPP’s TMP pilot plant. EXPERIMENTALsets of trials were designed and performed at the UQTR’s CIPP. For the first set, black spruce and balsam fir, two species widely used in TMP, and jack pine and white birch, species that are expected to be used in the future, were chosen. After registering the pure chip species and its initial age, the he objective of TMP (Thermo Mechanical Pulping) process control is to have stable, optimal pulp quality with minimal energy consumption. Thus, a constant flow of chips into the refiners is an important parameter for maintaining good refining performance. As a raw material, wood chips are heterogeneous and when fed into a refiner can vary in terms of: • Wood chip species; • Chip size distribution; • Moisture content; • Bulk and basic density; • Freshness; • Bark, knot, and rot content;