Biomass: Study of Rheological Characteristics of Catalyst Suspended Biomass Slurry

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  • バイオマス　　触媒懸濁バイオマススラリーの流動特性の検討
  • 触媒懸濁バイオマススラリーの流動特性の検討
  • ショクバイ ケンダク バイオマス スラリー ノ リュウドウ トクセイ ノ ケントウ

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Abstract

The apparent viscosity of pulverized chicken manure with suspended activated carbon, which is the feedstock for the supercritical water gasification, was determined using a rotary viscometer at 20, 30, 40°C with activated carbon weight fraction ranging from 0.0 to 0.20. No precipitation was observed in the pulverized chicken manure after one hour whether activated carbon is added or not. The chicken manure slurry behaved as non-Newtonian, thixotropic fluid. Apparent viscosity of the slurry decreased with an increase in temperature, and increased as the weight fraction of the activated carbon increased. A correlation to predict the apparent viscosity as a function of temperature and activated carbon weight fraction was determined. Validity of the Einstein's viscosity formula was certified under a constant shear stress condition in terms of the effect of activated carbon addition. The error in Einstein's formula was larger when activated carbon concentration was higher.

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