Premium
Time dependent rheology of the tetrahydrofuran‐hydrogen sulphide gas hydrate slurry
Author(s) -
Pinder Kenneth L.
Publication year - 1964
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450420311
Subject(s) - thixotropy , slurry , viscosity , tetrahydrofuran , rheology , thermodynamics , yield (engineering) , hydrate , materials science , relative viscosity , particle size , chemistry , particle (ecology) , apparent viscosity , shear rate , mineralogy , composite material , organic chemistry , geology , physics , oceanography , solvent
The tetrahydrofuran‐hydrogen sulphide hydrate slurry was shown to have a gel structure at very low concentrations and to display thixotropic or false body behavior depending on the shape of the slurry particles. The crystals were allowed to grow and readings of viscosity, particle size and particle shape were made at regular intervals during the period of growth. The observations were calculated by a new technique to give a yield value, a rate of decrease of viscosity and an equilibrium apparent viscosity. A correlation was found between the yield value, the square root of the Sauter mean diameter and the shape of the particles in the slurry. A second order‐zero order reversible reaction mechanism was found to yield an equation which fits the viscosity data for this slurry. A simplified technique for determining the constants in the equation makes it possible to predict the apparent viscosity‐time curves from a few readings taken at short time interval after initiation of shear.