Valorisation of forestry waste by pyrolysis in an auger reactor

Journal Article · Wed Jun 15 00:00:00 EDT 2011 · Waste Management

DOI:https://doi.org/10.1016/j.wasman.2011.01.020· OSTI ID:21550375

Puy, Neus ^[1]; Murillo, Ramon; Navarro, Maria V; Lopez, Jose M ^[2]; Rieradevall, Joan ^[1]; Fowler, G ^[3]; Aranguren, Ignacio; Garcia, Tomas ^[2]; Bartroli, Jordi ^[4]; Mastral, Ana M ^[2]

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1. Institute of Environmental Science and Technology (ICTA), Universitat Autonoma de Barcelona, Edifici Cn - Campus de la UAB, 08193 Cerdanyola del Valles, Barcelona (Spain)
2. Instituto de Carboquimica, CSIC, M Luesma Castan 4, 50018 Zaragoza (Spain)
3. Department of Civil and Environmental Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ (United Kingdom)
4. Department of Chemistry, Universitat Autonoma de Barcelona, Edifici Cn - Campus de la UAB, 08193 Cerdanyola del Valles, Barcelona (Spain)

Pyrolysis of forestry waste has been carried out in an auger reactor to study the influence of operational variables on the reactor performance and the properties of the related products. Pine woodchips were used for the first time as raw material and fed continuously into the reactor. Ten experiments were carried out under inert atmosphere at: (i) different reaction temperature (1073, 973, 873, 823 and 773 K); (ii) different solid residence time (5, 3, 2 and 1.5 min); and (iii) different biomass flow rate (3.9, 4.8 and 6.9 kg/h). Results show that the greatest yields for liquid production (59%) and optimum product characterisation were obtained at the lowest temperature studied (773 K) and applying solid residence times longer than 2 min. Regarding bio-oil properties, GC/MS qualitative identification show that the most abundant compounds are volatile polar compounds, phenols and benzenediols; and very few differences can be observed among the samples regardless of the pyrolysis operating conditions. On the whole, experimental results demonstrate that complete reaction of forest woodchips can be achieved in an auger reactor in most of the experimental conditions tested. Moreover, this study presents the initial steps for the future scaling up of the auger reactor with the aim of converting it into a mobile plant which will be able to remotely process biomass such as energy crops, forestry and agricultural wastes to obtain bio-oil that, in turn, can be used as energy vector to avoid high transport costs.

• OSTI ID: 21550375
• Journal Information: Waste Management, Vol. 31, Issue 6; Other Information: DOI: 10.1016/j.wasman.2011.01.020; PII: S0956-053X(11)00052-3; Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0956-053X
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
AGRICULTURAL WASTES
BIOFUELS
BIOMASS
CHEMICAL REACTORS
COST
CROPS
FLOW RATE
FORESTS
GAS CHROMATOGRAPHY
INERT ATMOSPHERE
LIQUIDS
MASS SPECTROSCOPY
PHENOL
PINES
POLAR COMPOUNDS
PYROLYSIS
RAW MATERIALS
TRANSPORT
VOLATILITY
WOOD WASTES
ALTERNATIVE FUELS
AROMATICS
ATMOSPHERES
CHEMICAL REACTIONS
CHROMATOGRAPHY
CONIFERS
CONTROLLED ATMOSPHERES
DECOMPOSITION
ENERGY SOURCES
FLUIDS
FUELS
HYDROXY COMPOUNDS
MATERIALS
ORGANIC COMPOUNDS
ORGANIC WASTES
PHENOLS
PINOPHYTA
PLANTS
RENEWABLE ENERGY SOURCES
SEPARATION PROCESSES
SOLID WASTES
SPECTROSCOPY
THERMOCHEMICAL PROCESSES
TREES
WASTES