Investigation of co-combustion of coal and olive cake in a bubbling fluidized bed with secondary air injection

Date

2009-06-01

Author

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

178
views

0
downloads

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, secondary air injection) were changed and variation of pollutant concentrations and combustion efficiency with these operational parameters were studied. The results were compared with that of the combustion of olive cake and coal. Flue gas concentrations of O(2), CO, SO(2), NO(x), and total hydrocarbons (C(m)H(n)) were measured during combustion tests. For the setup used in this study, the optimum operating conditions with respect to NO(x) and SO(2) emissions were found to be 1.35 for excess air ratio, and 30 L/min for secondary air flowrate for the combustion of 75 wt% olive cake and 25 wt% coal mixture. The highest combustion efficiency of 99.8% was obtained with an excess air ratio of 1.7, secondary air flow rate of 40 L/min for the combustion of 25 wt% olive cake and 75 wt% coal mixture.

Subject Keywords

Co-combustion of olive cake and coal, Bubbling fluidized bed, Secondary air injection

URI

https://hdl.handle.net/11511/32116

Journal

FUEL

DOI

https://doi.org/10.1016/j.fuel.2008.11.030

Collections

Graduate School of Natural and Applied Sciences, Article

Suggestions

OpenMETU
Core

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...
Investigation of combustion characteristics of biomass and coal mixtures in a circulating fluidized bed combustor Varol, Murat; Atımtay, Ayse; Department of Environmental Engineering (2013) In this study, combustion and co-combustion tests of Bursa/Orhaneli lignite with two biomass fuels (olive cake and woodchips) were carried out in a laboratory scale Circulating Fluidized Bed (CFB) combustor, 6 m high and 108 mm inside diameter, in order to investigate the effect of excess air ratio (l), secondary air ratio (SAR) and location of secondary air injection along the combustor wall on the emissions. Optimum l and SAR was determined for each test. The flue gas emissions were compared with limits i...
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 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...
Agro-waste combustion in a circulating fluidized bed Atımtay, Aysel (2005-05-13) In this study a circulating fluidized bed combustor (CFBC) of 125 mm inside diameter and 1800 mm height was used to investigate the combustion characteristics of peach and apricot stones produced as a waste from the fruit juice industry. A lignite coal was also burned in the same combustor. The combustion characteristics of the wastes were compared with that of a lignite coal that is most widely used in Turkey. On-line concentrations of O-2, CO, CO2, SO2, NOX and total hydrocarbons (CmHn) were measured in t...

Citation Formats

A. Atımtay, “Investigation of co-combustion of coal and olive cake in a bubbling fluidized bed with secondary air injection,” FUEL, pp. 1000–1008, 2009, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/32116.