Abstract
The viscosity of the liquids derived from Victorian brown coal in the two-stage Brown Coal Liquefaction (BCL) process was measured by using a rotational viscometer. The effects of temperature and liquid properties on the viscosity were determined for a wide variety of the samples which were prepared at different liquefaction and/or distillation conditions. The equations for estimating their viscosities were obtained by using these results. These equations are similar to Andrade's and involve two parameters of temperature and the liquid properties. The latter is represented by the 50 vol.%-off boiling point for the distillate fractions and the ratio of benzene insolubles-pyridine solubles content to benzene solubles content for the heavy fractions (vacuum residue).
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