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- W2391330457 abstract "The flow characteristics and pressure drop of gas-coal mixtures under high pressure and concentration through a Venturi with different structures, including diameter ratio(0.44, 0.55, 0.7), convergence angle(2.5°, 5°, 9°), diffuser angle(2.5°, 8°, 13°) and throat length(23d, 43 d, 80d) were investigated in the dense phase pneumatic conveying of pulverized coal system. A similar trend but a varied degree in non-dimensional pressure distribution for the gas-coal mixture through different Venturis was observed. The most remarkable influence parameter was diameter ratio, which had the greatest influence on pressure drop. The increase in pressure drop of the Venturi and remarkable increase in pressure drop in the diffuser were observed with the decrease of diameter ratio. The major role of other structural parameters was to change pressure distribution inside the Venturi, while having little influences on total pressure drop. The greatest convergence pressure drop for the convergence angle series occurred in the 2.5°. There was little difference of convergence pressure drop between 5° and 9° under high pressure and concentration. The greatest throat pressure drop for the throat length series occurred in the 80 d. The least diffuser pressure drop for the diffuser angle series occurred in the 8°. By introducing solids momentum flux, an empirical equation of pressure drop of gas-coal mixture through the Venturi was established. It showed good prediction with deviations from most experimental value within 30%." @default.
- W2391330457 created "2016-06-24" @default.
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- W2391330457 date "2015-01-01" @default.
- W2391330457 modified "2023-09-23" @default.
- W2391330457 title "Influence of Venturi structure on flow characteristics and pressure drop of gas-coal mixture" @default.
- W2391330457 hasPublicationYear "2015" @default.
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