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Resistance Properties of a Bend in Dense‐Phase Pneumatic Conveying of Pulverized Coal under High Pressure
Author(s) -
Zhou Y.,
Chen X.p.,
Liang C.,
Xu P.
Publication year - 2011
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201000307
Subject(s) - pressure drop , pulverized coal fired boiler , mechanics , mass flux , drop (telecommunication) , particle size , materials science , coal , particle (ecology) , chemistry , geology , mechanical engineering , engineering , physics , organic chemistry , oceanography
Experiments of high‐pressure dense‐phase pneumatic conveying of pulverized coal with different mean particle sizes using nitrogen were carried out in an experimental test facility with a conveying pressure of up to 4 MPa. The effects of three representative operating parameters (solids‐to‐gas mass flow ratio, conveying pressure, mean particle size) on the total pressure drop were examined. The pressure drops across the horizontal and vertical bends were analyzed by experimental and analytical calculation. The results show that the pressure drop due to gas friction is of much less significance, while the pressure drop due to the solids friction component of the total pressure drop dominates. There exists a relationship between the pressure drop due to solids kinetic energy loss and mass flux of solids.