Heat transfer model for estimating pinene emissions from hot-pressing softwood flakeboard
-
J.S. Radhakrishnan
Abstract
A heat transfer model for estimating pinene emissions from hot-pressing strand for the manufacture of flake-board has been constructed from first principles and validated. The model predicts α-pinene emissions of 0.4 kg/1000 kg from a 0.95-cm board, which is within the 0.3–0.6 kg/1000 kg range reported for commercial operations. Most of the emissions originate from the hot 1-mm layer of wood adjoining the platen surface. As a result, residual pinene in the board is depleted at the surface for both commercial and laboratory-prepared boards. Emissions are drastically reduced when the mat is surfaced with a layer of aspen, which prevents the hot platen from directly contacting softwood.
Copyright (c) 2004 by Walter de Gruyter GmbH & Co. KG
Articles in the same Issue
- Bioactive phenolic substances in industrially important tree species. Part 1: Knots and stemwood of different spruce species
- Oligolignans in Norway spruce and Scots pine knots and Norway spruce stemwood
- Delignification mechanism during high-boiling solvent pulping. Part 6: Changes in lignin structure analyzed by 1H-13C correlation 2-D NMR spectroscopy
- Ozonation of conventional kraft and SuperBatch residual lignins in methanol/water and water
- Relationship between dissolution of fiber materials and development of pulp strength in alkaline peroxide bleaching of mechanical pulp
- Nondestructive estimation of tracheid length from sections of radial wood strips by near infrared spectroscopy
- Heat transfer model for estimating pinene emissions from hot-pressing softwood flakeboard
- Monitoring creep-rupture in oriented strandboard using acoustic emission: Effects of moisture content
- Adhesives made from isocyanates and pyrolysis oils for wood composites
- Effect of wood acidity and catalyst on UF resin gel time
- Estimation of green moisture content distribution in hemfir timber by stochastic simulation
- Theoretical exploration of factors affecting dielectric constants of masson pine
- Shrinkage stress of wood during drying under superheated steam above 100°C
- Exploratory evaluation of oscillation drying for thick hemlock timbers
- A biopulping mechanism: Creation of acid groups on fiber
- Enzymatically polymerized phenolic compounds as wood preservatives
- Evaluation of borate formulations as wood preservatives to control subterranean termites in Australia
Articles in the same Issue
- Bioactive phenolic substances in industrially important tree species. Part 1: Knots and stemwood of different spruce species
- Oligolignans in Norway spruce and Scots pine knots and Norway spruce stemwood
- Delignification mechanism during high-boiling solvent pulping. Part 6: Changes in lignin structure analyzed by 1H-13C correlation 2-D NMR spectroscopy
- Ozonation of conventional kraft and SuperBatch residual lignins in methanol/water and water
- Relationship between dissolution of fiber materials and development of pulp strength in alkaline peroxide bleaching of mechanical pulp
- Nondestructive estimation of tracheid length from sections of radial wood strips by near infrared spectroscopy
- Heat transfer model for estimating pinene emissions from hot-pressing softwood flakeboard
- Monitoring creep-rupture in oriented strandboard using acoustic emission: Effects of moisture content
- Adhesives made from isocyanates and pyrolysis oils for wood composites
- Effect of wood acidity and catalyst on UF resin gel time
- Estimation of green moisture content distribution in hemfir timber by stochastic simulation
- Theoretical exploration of factors affecting dielectric constants of masson pine
- Shrinkage stress of wood during drying under superheated steam above 100°C
- Exploratory evaluation of oscillation drying for thick hemlock timbers
- A biopulping mechanism: Creation of acid groups on fiber
- Enzymatically polymerized phenolic compounds as wood preservatives
- Evaluation of borate formulations as wood preservatives to control subterranean termites in Australia