Biomass Gasification in Air-Blown Fluidised Bed - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2015

Biomass Gasification in Air-Blown Fluidised Bed

Résumé

Lignocellulosic biomass (wood, straw, energy crops) may be converted efficiently into electricity through syngas production and combustion in a gas engine. One of the best reactor to gasify biomass at the 1-10 MW scale is the air-blown autothermal fluidized bed, but this technology is still suffering from two main technical problems: the tar content of the syngas that may cause fouling and the risk of bed agglomeration / defluidization. To understand these phenomena and find technical solutions, it is important to conduct accurate observations on a gasifier pilot. In this communication, we report the technical features of a new 5 kg/h air-blown fluidised bed pilot plant. Experiments have been achieved with dry pellets of the perennial crop Miscanthus x Giganteus at low equivalence ratio (0.2 to 0.4), high bed temperature (800 to 900°C) and high gas velocity (5 to 10 Umf). Gas composition at the exit of the bed is given in terms of N2, H2, CO, CO2, CH4, C2 & C3 hydrocarbons, BTX and GC-FID-MS measurable tar compounds. These results are compared with similar studies (Michel et al., 2008; Xue et al, 2014). Gas composition profiles along the fluidized bed height are also detailed, as well as final bed composition profiles. Each 50mm-thick layer of the bed contains various proportion of olivine, char and agglomerates of olivine and ashes. A specific sampling device has been used to collect 10 g of bed at specific position every 15 minutes under hot operating conditions in order to follow the agglomerates build-up in real-time.
Fichier non déposé

Dates et versions

hal-01232591 , version 1 (23-11-2015)

Identifiants

  • HAL Id : hal-01232591 , version 1

Citer

George Lardier, Anthony Dufour, Christian Blanchard, Giovanella Franck, Brunello David, et al.. Biomass Gasification in Air-Blown Fluidised Bed. ECCE10, ECAB3, EPIC5, SFGP, Sep 2015, Nice, France. pp.Session 103: BioEnergy and Biofuels. Unconventional resources. ⟨hal-01232591⟩
168 Consultations
0 Téléchargements

Partager

Gmail Facebook X LinkedIn More