Dilute, Dense-Phase and Maximum Solid-Gas Transport. Seventh Quarterly Report

摘要

The objective of this investigation is to develop an experimentally verified theory of gas-solid transport that will permit scale-up and design of many coal feeding and transport systems. This report presents our measurements of the modulus of elasticity of powders using a specially constructed hopper. Our previously reported theory showed that this modulus limits the rate of solids flow. It is thus a fundamental powder parameter. Future work includes the determination of pressure and solids concentrations in our pneumatic transport apparatus. We hope to eliminate the effect of electrostatics that we had in our previously reported measurements. If this is successful we hope that our measured drag coefficients will be those computed from standard drag low relations. 11 refs., 3 figs., 6 tabs. (ERA citation 11:035475)