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Simulation of a Highly Efficient Dual Fluidized Bed Gasification Process
Author(s) -
Kaiser S.,
Weigl K.,
Aichernig Ch.,
Friedl A.,
Hofbauer H.
Publication year - 2001
Publication title -
chemie ingenieur technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 36
eISSN - 1522-2640
pISSN - 0009-286X
DOI - 10.1002/1522-2640(200106)73:6<642::aid-cite6423333>3.0.co;2-k
Subject(s) - technical university , fluidized bed , library science , engineering , computer science , waste management
The FICFB gasification concept allows to produce high grade product gas (LHV 10 14 MJ/m3s) due to the dual fluidized bed configuration. Using a gas engine, a net electric efficiency of 26% can be obtained with a plant configuration making good economic sense for decentralized CHP plants. The solid circulation rate between gasification (bubbling regime) and combustion zone (turbulent regime), necessary for heat supply of gasification reactions, is mainly determined by the volume flow of combustion air. An additional combustion chamber after the combustion zone allows 55% part load operation, referring to the design case, with sufficient solid circulation rate as well as constant excess air, still providing net electric efficiency of 22.5%.