Design and performance of a pressurized cyclone combustor (PCC) for high and low heating value gas combustion
The combustion difficulties for low heating value (LHV) gases derived from biomass fuels via a gasification process have led to more investigations into LHV gas combustors. Cyclone combustors provide good air/fuel mixing with long residence times. In this study, a small-scale pressurized cyclone combustor (PCC) was designed and optimized using computational fluid dynamics (CFD) simulation. The PCC, along with a turbocharger-based, two-stage microturbine engine, was first characterized experimentally with liquefied petroleum gas (LPG) fuel and then with both LPG and LHV gas derived from biomass in dual-fuel mode. The combustor achieved ultra-low CO and NOx emissions of about 5 and 7Â ppm, respectively, for LPG fuel and of about 55 and 12Â ppm, respectively, in dual-fuel mode at the maximum second-stage turbine speed of 26,000Â rpm with stable turbine operation.
Year of publication: |
2011
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Authors: | Al-attab, K.A. ; Zainal, Z.A. |
Published in: |
Applied Energy. - Elsevier, ISSN 0306-2619. - Vol. 88.2011, 4, p. 1084-1095
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Publisher: |
Elsevier |
Keywords: | Biomass Cyclone combustor Low heating value gas Downdraft gasifier Microgas turbine |
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