The rheological characterization of coal liquefaction preheater slurries

Rheological characterizations were made for a coal liquefaction preheater slurry; measurements were made in line at high temperature and high pressure. Above 400°K, the coal‐solvent slurry (35 wt. % coal) was pseudoplastic and was adequately modeled by a power‐law equation. Experimental data over a...

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Veröffentlicht in:	AIChE J.; (United States) 1982-01, Vol.28 (1), p.111-116
Hauptverfasser:	Thurgood, J. R., Hanks, R. W., Oswald, G. E., Youngblood, E. L.
Format:	Artikel
Sprache:	eng
Schlagworte:	01 COAL, LIGNITE, AND PEAT 010405 - Coal, Lignite, & Peat- Hydrogenation & Liquefaction 010600 - Coal, Lignite, & Peat- Properties & Composition CARBONACEOUS MATERIALS COAL COAL LIQUEFACTION DISPERSIONS ENERGY SOURCES FLOW MODELS FLUID FLOW FLUID MECHANICS FOSSIL FUELS FREIGHT PIPELINES FUEL SLURRIES FUELS HIGH TEMPERATURE HYDRAULICS LAMINAR FLOW LIQUEFACTION MATERIALS MATHEMATICAL MODELS MECHANICS MEDIUM TEMPERATURE MIXTURES PIPELINES RHEOLOGY SLURRIES SLURRY PIPELINES SOLVENTS SUSPENSIONS TEMPERATURE EFFECTS THERMOCHEMICAL PROCESSES TWO-PHASE FLOW VELOCITY
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Zusammenfassung:	Rheological characterizations were made for a coal liquefaction preheater slurry; measurements were made in line at high temperature and high pressure. Above 400°K, the coal‐solvent slurry (35 wt. % coal) was pseudoplastic and was adequately modeled by a power‐law equation. Experimental data over a temperature range of 400 to 700°K were correlated, and critical slurry velocities for transition from laminar flow were calculated for flow in several pipe diameters.
ISSN:	0001-1541 1547-5905
DOI:	10.1002/aic.690280116