Generalized correlation for estimating choking velocity in vertical solids tranport
Conference
·
OSTI ID:7230596
The literature correlations and models for estimating choking velocity in vertical solids transport lines were reviewed and tested for their suitability over a wide range of operating pressures (to 680 psia) and gas densities (to 3.4 lb/cu ft). None of them was satisfactory over the whole range. Most of these correlations are based on low-pressure data and are unsatisfactory for high-pressure data. The only correlation based on high-pressure data was unsatisfactory for low-pressure data. An empirical correlation of the friction factor for solids (f/sub s/) as a function of gas density (rho/sub g/) at choking conditions is presented. This correlation, together with Yang's model for particle velocity in vertical transport and the assumption that the slip velocity at choking equals the terminal velocity, can be used to calculate choking velocity and the corresponding voidage at low as well as high pressures.
- Research Organization:
- Institute of Gas Technology, Chicago, IL (USA)
- OSTI ID:
- 7230596
- Report Number(s):
- CONF-760582-1
- Country of Publication:
- United States
- Language:
- English
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