Co-firing of olive residue with lignite in bubbling FBC

2008-01-01
Gogebakan, Zuhal
Gogebakan, Yusuf
Selçuk, Nevin
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 Bubbling Fluidized Bed Combustor (ABFBC) test rig co-firing olive residue with indigenous lignite at different biomass shares are presented. The results reveal that co-firing increases combustion efficiency irrespective of the biomass share and that increase in biomass share reduces N2O and SO2 emissions considerably while increasing CO emission. O-2, CO2 and NO emissions are not found sensitive to increase in biomass share. Olive residues are co-fired with high ash and sulfur containing lignite without any operational problems.
COMBUSTION SCIENCE AND TECHNOLOGY

Suggestions

Co-firing of steam coal with high sulfur content lignite in a bubbling fluidized bed combustor
Selçuk, Nevin; Altindag, Hakan (2005-05-25)
Combustion and emission behavior of 100 % steam coal (SET 1) and a mixture of 80 % by weight steam coal and 20 % by weight local lignite, characterized by high sulfur and ash contents, (SET 2) were investigated in the 0.3 MW, Middle East Technical University (METU) Atmospheric Bubbling Fluidized Bed Combustor (ABFBC) Test Rig. Experiments were performed with limestone addition at various Ca/S molar ratios with fines recycle. In both sets of experiments, parameters other than Ca/S molar ratio were held as ne...
Effect of recycle on fluidized-bed combustion and emission characteristics of high-sulfur lignite
Selçuk, Nevin; Harmandar, H; Altindag, H (2004-05-01)
The effect of recycle on gaseous pollutant emissions from fluidized-bed combustion of high-quality coals has extensively been investigated and is well documented. However, the effect of recycle on gaseous emissions from combustion of Turkish lignites with high ash, volatile matter, and sulfur contents has not been investigated to date. Recent trends in the utilization of indigenous lignites in fluidized-bed boilers necessitated investigation of pollutant emissions and adaptation of fluidized-bed combustion ...
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.
Combustion of olive cake and coal in a bubbling fluidized bed with secondary air injection
Varol, Murat; Atımtay, Aysel (2007-07-01)
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...
Co-firing biomass with coal in bubbling fluidized bed combustors
Göğebakan, Zuhal; Selçuk, Nevin; Department of Chemical Engineering (2007)
Co-firing of biomass with coal in fluidized bed combustors is a promising alternative which leads to environmentally friendly use of coal by reducing emissions and provides utilization of biomass residues. Therefore, 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 residue, hazelnut shell and cotton residue with low calorific value lign...
Citation Formats
Z. Gogebakan, Y. Gogebakan, and N. Selçuk, “Co-firing of olive residue with lignite in bubbling FBC,” COMBUSTION SCIENCE AND TECHNOLOGY, pp. 854–868, 2008, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/30262.