Economics at your fingertips  

Oil shale pyrolysis kinetics and variable activation energy principle

Omar S. Al-Ayed, M. Matouq, Z. Anbar, Adnan M. Khaleel and Eyad Abu-Nameh

Applied Energy, 2010, vol. 87, issue 4, 1269-1272

Abstract: A modified first order kinetic equation with variable activation energy is employed to model the total weight loss of Ellajjun oil shale samples. Fixed bed retort with 400 g of oil shale sample size is used in this study in 350-550 °C temperature range. Variable heating rate, h, in the range 2.6-5 °C min-1 are tested. Activation energy was allowed to vary as a function of oil shale conversion. The value of the activation energy increased from 98 to 120 kJ mol-1 while the corresponding frequency factor changed from 9.51 x 105 to 1.16 x 106. Fischer Assay analysis of the studied samples indicated 12.2 wt.% oil content. The oil shale decomposition ranged from 3.2% to 28.0%. The obtained kinetic data are modeled using variable heating rate, pyrolysis temperature and variable activation energy principle in a nitrogen sweeping medium. Good fit to the obtained experimental data is achieved.

Keywords: Variable; activation; energy; Oil; shale; Variable; heating; rate; Pyrolysis; kinetics (search for similar items in EconPapers)
Date: 2010
References: View references in EconPapers View complete reference list from CitEc
Citations View citations in EconPapers (3) Track citations by RSS feed

Downloads: (external link)
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link:

Ordering information: This journal article can be ordered from
http://www.elsevier. ... 405891/bibliographic

Access Statistics for this article

Applied Energy is currently edited by J. Yan

More articles in Applied Energy from Elsevier
Series data maintained by Dana Niculescu ().

Page updated 2017-09-29
Handle: RePEc:eee:appene:v:87:y:2010:i:4:p:1269-1272