Flash pyrolysis of oil shales in a fluidized bed reactor

Authors
Citation
Yh. Khraisha, Flash pyrolysis of oil shales in a fluidized bed reactor, ENERG CONV, 41(16), 2000, pp. 1729-1739
Citations number
10
Categorie Soggetti
Environmental Engineering & Energy
Journal title
ENERGY CONVERSION AND MANAGEMENT
ISSN journal
01968904 → ACNP
Volume
41
Issue
16
Year of publication
2000
Pages
1729 - 1739
Database
ISI
SICI code
0196-8904(200011)41:16<1729:FPOOSI>2.0.ZU;2-Z
Abstract
The pyrolysis behavior of EL-Lajjun and Sultani oil shales was investigated under rapid heating conditions using a bench scale fluidized bed reactor. Shale particles were fed continuously (7 g h(-1)) in a bed of sand fluidize d by N-2 gas. Experiments were conducted over a range of temperatures, 400- 500 degrees C, and with three particle size fractions, 250-355, 355-500 and 500-710 mu m. Increasing the pyrolysis temperature resulted in increasing the oil yields, but at temperature over 475 degrees C, the increase became small. Over the tested range, particle size showed little effect on oil yie lds. A simple first order devolatilization model adequately describes the p yrolysis process. The rate constants and activation energies for the two sh ales were deduced. (C) 2000 Elsevier Science Ltd. All rights reserved.