C - Chemistry – Metallurgy – 10 – B
Patent
C - Chemistry, Metallurgy
10
B
202/42
C10B 57/08 (2006.01) C10B 57/10 (2006.01) F28D 7/00 (2006.01) F28D 13/00 (2006.01)
Patent
CA 1205777
ABSTRACT OF THE DISCLOSURE In order to preserve the quality of treated coking coal, the drying and preheating operation is performed in consecutive stages. For this purpose, a set of superimposed containers is provided with vertically oriented pipes for a heating medium, the pipes in each container having separate inlets and outlets. The bottom region of each container is further provided with horizontally directed pipes having separ- ate inlet and outlet for receiving a pressure medium which is discharged into the bottom region of each container to produce a whirling bed of the coal. In this manner, the coal is pre- liminarily dried in the uppermost container, then additionally dried and preheated in the intermediate container, and heated to the desired final temperature in the lowermost container.
401721
Durselen Heinz
Petrovic Vladan
Fetherstonhaugh & Co.
Krupp-Koppers G.m.b.h.
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