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This report presents the study carried out on the pneumatic transport of fine and moist coal. The results obtained permit evaluation of the conditions for applying this technique and, in particular, determination of: - the energy consumption as a function of concentration (ratio between flow rates of solid matter and transport air); - the effect of moisture on transport (risk of clogged pipes); - the advantages offered by the instrumentation of this type of installation. The tests were carried out on natural coals of different particle sizes and moistness on an industrial unit of 12 t/h nominal capacity, fitted with a 190 m long pipe of 140 mm internal diameter. The installation was fitted with a set of sensors to measure pressure and flow rate, connected to a data acquisition and processing system. The results show that water content is the determining factor in the pneumatic transport of fine, damp coals. A coal with more than 10% water content cannot be handled pneumatically.

Additional information

Authors: ELOMRANI M M, INERIS, Paris (FR)
Bibliographic Reference: EUR 14109 FR (1992) 45 pp., MF, ECU 4, blow-up copy ECU 7.50
Availability: (2)
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