ライブラリ登録: Guest
Proceedings of CHT-17 ICHMT International Symposium on Advances in Computational Heat Transfer
May 28 - June 1, 2017, Napoli, Italy

DOI: 10.1615/ICHMT.2017.CHT-7


ISBN Print: 9781-56700-4618

ISSN: 2578-5486

BIOMASS FAST PYROLYSIS PROCESS AT LABORATORY SCALE: RESIDENCE TIME AND HEATING UP EVALUATION IN A SHAFTLESS SCREW REACTOR BY MEANS OF A DISCRETE ELEMENT MODEL APPROACH

pages 1071-1083
DOI: 10.1615/ICHMT.2017.CHT-7.1180
Get accessGet access

要約

Screw reactors may be specifically and effectively designed for small scale fast pyrolysis processes but very few models are so far available to describe their behaviour as an aid for their design and optimization. In present work, an analysis of Solid Residence Time and heating up process is proposed for this type of reactor, studying the system through of a 3-D CFD model. The screw reactor where the pyrolysis process takes place, has been modelled by means of a Discrete Model DEM approach based on the multiphase code "MFIX". In this case, phase and related interactions occurring with particles, are taken into account while evaporating phenomena and chemical reactions are neglected. This approach, allows for investigating more in detail some characteristic effects related to the perturbation of operating parameters to compare numerical and experimental data. The simulated particle heat flux is in line with experimental results at an average value of about 100W corresponding to 1 kg/h biomass flow rate with a 7% moisture content w.b. For the solid phase, the residence rime in the pyrolysis zone (less than half of the whole reactor length) is in the order of 5.5 seconds that is in typical for such components.

Begell Digital Portal Begellデジタルライブラリー 電子書籍 ジャーナル 参考文献と会報 リサーチ集 価格及び購読のポリシー Begell House 連絡先 Language English 中文 Русский Português German French Spain