METHOD AND APPARATUS FOR CONVEYING AND/OR HEATING COAL PARTICLES IN A DENSE PHASE FLOW

摘要

1529923 Conduits for pneumatic conveyers UNION CARBIDE CORP 9 Jan 1976 [10 Jan 1975] 00802/76 Heading B8A [Also in Division F4] A conduit through which fluidized densephase coal is conveyed comprises a plurality of sections A, B, C having respective successively increased diameters interconnected by connectors 55, 56 of varying diameter, the arrangement being such that material leaves each section at a velocity above that at which it entered, but below the velocity at which the conduit is eroded and the velocity is lowered during passage through the connectors. The entrance velocity may be between 15-60 ft. per second whilst the exit velocity is between 50 and 60 ft. per sec. The conduit may form a heat exchanger whereby coal is heated.