Combustion of olive cake and coal in a bubbling fluidized bed with secondary air injection

Date

2007-07-01

Author

Varol, Murat
Atımtay, Aysel

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

166
views

0
downloads

Combustion performances and emission characteristics of olive cake and coal are investigated in a bubbling fluidized bed. Flue gas concentrations of O-2, CO, SO2, NOx, and total hydrocarbons (CmHn) were measured during combustion experiments. Operational parameters (excess air ratio (lambda), secondary air injection) were changed and variation of pollutant concentrations and combustion efficiency with these operational parameters were studied. The temperature profiles measured along the combustor column was found higher in the freeboard for olive cake than coal due to combustion of hydrocarbons mostly in the freeboard. Combustion efficiencies in the range of 83.6-90.1% were obtained for olive cake with lambda of 1.12-2.30. For the setup used in this study, the optimum operating conditions with respect to NOx and SO2 emissions were found as 1.2 for lambda and 50 L/min for secondary air flowrate for the combustion of olive cake.

Subject Keywords

Olive cake combustion, Bubbling fluidized bed, Secondary air injection

URI

https://hdl.handle.net/11511/30072

Journal

FUEL

DOI

https://doi.org/10.1016/j.fuel.2006.11.017

Collections

Graduate School of Natural and Applied Sciences, Article

Suggestions

OpenMETU
Core

Effect of freeboard extension on co-combustion of coal and olive cake in a fluidized bed combustor Akpulat, Onur; Varol, Murat; Atımtay, Aysel (2010-08-01) In this study, flue gas emissions and combustion efficiencies during combustion and co-combustion of olive cake and coal were investigated in a bubbling fluidized bed. Temperature distributions along the combustion column and flue gas concentrations of O-2, CO, SO2 and NOx were measured during combustion experiments. Two sets of experiments were performed to examine the effect of fuel composition, excess air ratio and freeboard extension on flue gas emissions and combustion efficiency.
Investigation of co-combustion of coal and olive cake in a bubbling fluidized bed with secondary air injection Atımtay, Aysel (2009-06-01) In this study, a bubbling fluidized bed of 102 mm inside diameter and 900 mm height was used to burn olive cake and coal mixtures. Tuncbilek lignite coal was used together with olive cake for the co-combustion tests. Combustion performances and emission characteristics of olive cake and coal mixtures were investigated. Various co-combustion tests of coal with olive cake were conducted with mixing ratios of 25%, 50%, and 75% of olive cake by weight in the mixture. Operational parameters (excess air ratio, se...
Co-firing of olive residue with lignite in bubbling FBC Gogebakan, Zuhal; Gogebakan, Yusuf; Selçuk, Nevin (2008-01-01) The effect of biomass share on gaseous pollutant emissions from fluidized bed co-firing of various biomass fuels with high calorific value coals have extensively been investigated to date. However, effect of co-firing of olive residues with low calorific value lignites having high ash and sulfur contents has not been studied in bubbling fluidized bed combustors. In this study, experimental results of various runs pertaining to gaseous emissions (O2, CO2, CO, SO2, NO, N2O) from METU 0.3 MWt Atmospheric Bubbl...
Analysis of material collected on particles exposed to volatile matter of bituminous coal in a fluidized bed Vural, H (1997-05-01) The activity of fluidized bed particles towards the volatile matter of a bituminous coal was analysed by measurement of tar yield and the direct measurement of CO2 concentration in the exhaust gas from the devolatilization of bituminous coal particles in a laboratory-scale fluidized bed reactor. In a third approach, thermogravimetric analysis (t.g.a.) of the fluidizing particles was performed, indicating that calcium-containing particles exhibited the largest weight loss. In a fourth approach, a mass spectr...
Combustion and co-combustion of olive cake and coal in fluidized bed Varol, Murat; Atımtay, Aysel; Department of Environmental Engineering (2006) In this study, combustion performances and emission characteristics of olive cake and olive cake+coal mixture are investigated in a bubbling fluidized bed of 102 mm inside diameter and 900 mm height. The average particle sizes of coal and olive cake used in the experiments were 1.57 mm and 1.52 mm, respectively. Flue gas concentrations of O2, CO, SO2, NOx, and total hydrocarbons (CmHn) were measured during combustion experiments. Operational parameters (excess air ratio, secondary air injection) were change...

Citation Formats

M. Varol and A. Atımtay, “Combustion of olive cake and coal in a bubbling fluidized bed with secondary air injection,” FUEL, pp. 1430–1438, 2007, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/30072.