Developing a flowmeter for streams with high solids content
Abstract
A type of flowmeter, based on a piping arrangement similar to a Wheatstone bridge, was tested to measure the flow rate of the feed to the Kerr-McGee critical solvent deashing (CSD) unit of the solvent refined coal pilot plant in Wilsonville, Alabama. To simulate the non-Newtonian behavior of the CSD feed stream, mineral oil and a mixture of a polymer, carboxymethyl cellulose, and water were used in the tests. It is shown that there is a direct relationship between the flow rate and the ratio of the pressure drops across the parallel legs of the flowmeter and across a line connecting the center of the parallel legs. A mathematical model, developed previously to predict the dynamics of the flow measuring system, was tested, and the predicted results matched the measured values fairly well.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- July 1984
- Bibcode:
- 1984STIN...8518316J
- Keywords:
-
- Coal Liquefaction;
- Flow Velocity;
- Flowmeters;
- Wheatstone Bridges;
- Coal Derived Liquids;
- Differential Pressure;
- Performance Tests;
- Pressure Measurement;
- Recirculative Fluid Flow;
- Instrumentation and Photography