Fluid mixture testing cell suited for detecting phase changes

Details Fluid mixture testing cell suited for detecting phase changes Fluid mixture testing cell suited for detecting phase changes

1996-08-12

1998-06-23

Williams, Hezron E.

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Viscosity

73 5428, 73 5435, G01N 1110

Patent

active

057707952

ABSTRACT:
A mixture containing substances likely to settle or to flocculate is fed into a chamber (1a) of a body (1) delimited by a mobile piston (18) and a closed-circuit circulation of the mixture is established by means of a homogenization turbine (8) driven by a motor (28) associated with magnetic driving means (9, 26). According to the pressure and to the temperature, variations in the conductance of the mixture flowing between two electrodes (1, 16) connected to a measuring device (17) are measured on the one hand and variations in the driving torque applied to turbine (8) under the effect of the concomitant variations in the apparent viscosity of the mixture are measured on the other hand. The cell can be used to study of the conditions of formation of asphaltene deposits or flocculations in petroleum crudes for example.

REFERENCES:
patent: 5303578 (1994-04-01), Williams et al.
patent: 5610325 (1997-03-01), Rajagopal et al.
Research Disclosure No. 315 Jul. 1, 1990: ISSN 0374-4353 pp. 578, 1-578.2, "Phase Analysis Apparatus For Mixtures of Supercritical Fluids and Polymer Solutions" & WPI Database, Section CH, Week 9032.
Patent Abstracts of Japan, vol. 010, No. 072, (P-438), Arch 22, 1986 & JP-A-60 210751.
Ias '93, Proceedings of IEEE Industry Application Society 28th Annual Meeting (IEEE Cat. No. 93CH3366-2), vol. 3, ISBN 0-7803-1462-X, 1993, IEEE, New York, NY USA, pp. 1779-1784, Yatsuzuka K. et al.

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