Considerations on Experimental Studies of Vegetable Char Combustion in Fluidized Bed

• Type: Article in International Scientific Journal
• Date: 2009

Authors

N. Rangel (Author) FEUP; Carlos Pinho (Author) FEUP

Journal

Title: Int. J. Energy Clean Environment

Vol. 10 No. 1-4

Pages: 203-215

ISSN: 2150-3621 Print

Publisher: BEGELL HOUSE INC

Indexing

Scopus

COMPENDEX

Scientific classification

FOS: Engineering and technology > Other engineering and technologies

Other information

DOI: 10.1615/InterJEnerCleanEnv.2011002039

Abstract (EN): This paper reports some experimental aspects of the combustion of batches of vegetable chars in a fluidized-bed laboratory reactor at temperatures of 600, 700, and 750°C. Data on the volumic concentrations of carbon oxides and volatile organic compounds along the combustion process are presented and discussed. Tests show that the carbon conversion rate is not only due to combustion, but there are pyrolysis phenomena that accompany it and contribute to the global conversion rate of the carbon. The burned-out and consumed mass fractions of carbon were determined, and it was observed that these two quantities differ, particularly for lower bed temperatures. Vegetable chars when suffering combustion in low-temperature fluidized beds release tars in the form of vapors that escape from the bed without burning.

Language: English

Type (Professor's evaluation): Scientific