Co-combustion of biocoal and lignite in a circulating fluidised bed combustor to decrease the impact on global warming

Date

2019-01-01

Author

Keivani, Babak
OLGUN, HAYATİ
Atımtay, Aysel

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This work covers co-combustion of biocoal obtained from red pine wood chips with Orhaneli lignite in a 30 kW-thermal capacity circulating fluidised bed combustor (CFBC) system in air and oxygen-enriched atmosphere. The combustor was of 108 mm inside diameter and 6 m height. The combustion temperature was held at 850+50 degrees C. Oxygen enriched combustion tests were carried out at different ratios of lignite and biocoal mixtures. Biocoal share in the fuel mixture was increased up to 50% by wt. It was found that the fuel mixtures up to 50% by wt. of biocoal were combusted effectively in the system. The oxygen concentration in the oxidant was varied between 21 and 27% by vol. for the oxygen-enriched combustion experiments. The results showed that biocoal can be a good additive fuel to lignite coal and oxygen-enriched co-combustion is an option for reducing flue gas emissions of SO2, CO and N2O.

Subject Keywords

Biomass, Torrefaction, Biocoal, Oxygen Enriched Combustion, Circulating Fluidised Bed Combustion

URI

https://hdl.handle.net/11511/31483

Journal

INTERNATIONAL JOURNAL OF GLOBAL WARMING

DOI

https://doi.org/10.1504/ijgw.2019.100313

Collections

Graduate School of Natural and Applied Sciences, Article

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Citation Formats

B. Keivani, H. OLGUN, and A. Atımtay, “Co-combustion of biocoal and lignite in a circulating fluidised bed combustor to decrease the impact on global warming,” INTERNATIONAL JOURNAL OF GLOBAL WARMING, pp. 120–137, 2019, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/31483.