SET Proceedings 2978-4387 Caravel Press 10.65582/set.2002.036 2002.036 Design and Experimental Study of a Conical Fluidized Bed Combustor Firing Sawdust PermchartWatchara KouprianovVladimir I. ivlaanov@siit.tu.ac.th Joint Graduate School of Energy and Environment, King Mongkut’s University of Technology, Thonburi, Bangkok 10140, Thailand Mechanical Engineering Program, Sirindhorn International Institute of Technology, Thammasat University, P.O. Box 22, Thammasat Rangsit Post Office, Pathumthani 12121 Thailand 12062002 1 978-1-995850-07-8 1 6 12 June 2002 © 2002 Copyright WSSET 2002

In this paper, a cylindrical combustor with the cone-shaped fluidized bed using sand as inert matter is presented. This laboratory scale combustor was designed for firing up to 100 kg/hr of sawdust delivered onto the fluidized bed of sustainably heated sand. The effects of fuel moisture, as well as operating conditions (load and excess air), on the combustion characteristics were studied in the experimental tests. The temperature profiles as well as gas concentrations for the CO, O2 and CO2 along the combustor height and for some cross-sectional planes were found for three (fixed) bed heights: 20, 30 and 40 cm. For combustor loads of 35 to 82 kg/hr, at excess air of some 60 to 100 %, combustion efficiency was in the range of 95 to 99 %.

 12 to 14 June 2002 1st International Conference on Sustainable Energy Technologies SET2002 1 Porto, Portugal