Abstract
Flash pyrolysis liquid was combusted with simple pressure atomisation equipment commonly used with light fuel oils in intermediate size boilers. With a number of modifications to the combustion system, carbon monoxide (CO) and nitrous oxide (NOx) could be reduced to acceptable levels: CO < 30 ppm and NOx < 140 ppm. On the other hand, particulate emissions were >2 times higher than from light fuel oil. Contributions to high particulate emissions were from high solids content (0.5–0.7 wt%) and poor atomisation caused by high viscosity of the samples (> 20 cSt at 80 °C).
The changes to the combustion system/conditions compared to light fuel oil were: acid resistant progressive cavity pump, higher oil preheat temperature and higher oil pressure, refractory section between burner and boiler warmed up to at least 800 °C. In addition, it was necessary to store pyrolysis liquid samples under inert conditions and to rinse nozzles with solvent after shutdown to prevent coking. The complexity and cost of these modifications are considered to be too great for current grades of flash pyrolysis liquid to be sold as a light fuel oil replacement.
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© 1997 Springer Science+Business Media Dordrecht
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Gust, S. (1997). Combustion Experiences of Flash Pyrolysis Fuel in Intermediate Size Boilers. In: Bridgwater, A.V., Boocock, D.G.B. (eds) Developments in Thermochemical Biomass Conversion. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-1559-6_37
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DOI: https://doi.org/10.1007/978-94-009-1559-6_37
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-7196-3
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