Physical properties of flash pyrolysis liquids

G. V. C. Peacocke, P. A. Russell, J. D. Jenkins, A. V. Bridgwater

Research output: Contribution to journalArticlepeer-review


Process design requires knowledge of the physical and chemical properties of the fluids being handled. The measurement of a range of properties of two pyrolysis liquids is described. The pyrolysis liquid properties reported are: density, viscosity, refractive index, thermal capacity, thermal conductivity, and their variation with temperature, time, exposure to air/oxygen and history. The oils follow conventional behaviour for most properties except that there is marked differences in viscosity behaviour above around 50°C compared to below 50°C. There is a noticeable effect from exposure to oxygen/air which increases viscosity. This may be due to removal of volatiles, removal of water or reaction. There is clear evidence that some reaction occurs even under ambient conditions.
Original languageEnglish
Pages (from-to)169-177
JournalBiomass and Bioenergy
Issue number1-6
Publication statusPublished - 1994


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