6533b7d1fe1ef96bd125c1a7
RESEARCH PRODUCT
Influence of Elevated Pressure on the Torrefaction of Wood
Mikko HupaDavid A. AgarDavid A. AgarNikolai Demartinisubject
Yield (engineering)Materials science020209 energyGeneral Chemical Engineeringpressurized reactorsEnergy Engineering and Power TechnologyLignocellulosic biomass02 engineering and technologyRaw materialCombustionPulp and paper industryTorrefactiontorrefactionFuel Technology0202 electrical engineering electronic engineering information engineeringHeat of combustionParticle sizePyrolysista218wooddescription
The use of pressurized reactors in industrial processes can improve efficiency and economics. Torrefaction is a partial pyrolysis of lignocellulosic biomass designed to result in a solid product with improved fuel properties for utilization in combustion and gasification. In this work, the influence of elevated pressure on the torrefaction of wood has been investigated. Wood samples were torrefied using a pressurized thermogravimetric reactor (PTGR) with pressures of 0.1 to 2.1 MPa. The results indicate that reactor pressure, particle size of feedstock, and wood species are all factors in torrefaction yield improvements. Torrefaction at 2.1 MPa pressure improved the higher heating value (calculated) of single-particle beech cylinders from 20.4 to 22.2 MJ kg–1, the increase ranging from 7.5 to 19% from the untreated heating value. Decomposition reactions were accelerated with pressure so that a given mass yield was realized in a shorter time. At 2.1 MPa pressure and 280 °C the time was reduced by over 60% ...
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-02-15 | Energy & Fuels |