Wood torrefaction is a thermal treatment of wood under atmospheric conditions without air or oxygen in the temperature range 473−573 K.1 The target of torrefaction is to increase the energy density of wood on a mass basis. A number of papers has been published on the torrefaction for the different final uses, such as co-firing in existing coal-fired power stations,2 gasification,3,4 syn-gas production,5 and as barbeque fuel.6 The recent rapid growth of wood pellet industry is mainly driven by the incentive programs in Europe to reduce greenhouse gas emissions and the rising oil and natural gas prices. Bergman proposed a combined torrefaction and pelletization process for the production of the high energy density torrefied wood pellets.1 Torrefied pellets are suitable for long-distance transportation, especially for pellets produced in British Columbia (BC) of Canada and exported to Europe or Asia.7 We previously developed a two-component one-step kinetic model for the torrefaction of BC softwoods to establish a relationship among weight loss, torrefaction temperature, and residence time,8 then reported the effect of temperature and residence time on torrefaction and densification of different wood species.9