Détail de la notice
Titre du Document
Simulation and design of a bagasse gasifier
An evaluation of options for the practical implementation of a novel biomass reforming concept has been carried out. This concept utilises the potassium that occurs naturally in biomass as a catalyst in cracking high molecular weight tars produced during gasification to deliver a high quality syngas. One of the primary objectives was to develop a process which yielded a gas with the highest possible fuel heating value, relative to that of the original bagasse fuel. This ratio is termed cold gas efficiency (CGE). Initially, a first law of thermodynamics analysis (simple mass/atomic species and energy balances) was carried out in which the preferred operating regimes were identified in terms of basic process parameters. Both deterministic and Monte Carlo analyses were performed using the first law models. Key findings from this preliminary analysis included: beyond the minimum steam requirement, maximum cold gas efficiency (CGE) is achieved by avoiding any further increase in the ratio of steam to dry ash free (d.a.f.) bagasse; the theoretical minimum steam requirement to fully convert all of the carbon in the bagasse to a gas of maximum heating value is approximately 13.5 wt% of the fuel (d.a.f. basis); without chemical recuperation, char/coke yields in excess of 12 wt% on a d.a.f. basis (characteristic of the process in question) will lead to suppression of the CGE. The Monte Carlo sensitivity analysis indicated a 90% probability of achieving a CGE of between 62% and 85% give
International Media
ISSN : 0020-8841 CODEN : ISUJA3
International sugar journal A. 2008, vol. 110, n° 1309, [13-20 [6 p.]] [bibl. : 1/4 p.]
Pour les membres de la communauté du CNRS, ce document est autorisé à la reproduction à titre gratuit.
Pour les membres des communautés hors CNRS, la reproduction de ce document à titre onéreux sera fournie sous réserve d’autorisation du Centre Français d’exploitation du droit de Copie.

Pour bénéficier de nos services (strictement destinés aux membres de la communauté CNRS (Centre National de la Recherche Scientifique), de l'ESR français (Enseignement Supérieur et Recherche), et du secteur public français & étranger) :