F - Mech Eng,Light,Heat,Weapons – 26 – B
Patent
F - Mech Eng,Light,Heat,Weapons
26
B
34/46
F26B 19/00 (2006.01) C10F 5/00 (2006.01) F26B 7/00 (2006.01) F26B 25/06 (2006.01)
Patent
CA 1153200
Abstract: For the purpose of drying organic solid materials, particularly browncoals, the preheated solid materials are continuously passed through at least one drying stage (2) operated with saturated steam and subjected to the action of the saturated steam at super-atmospheric pressure and at elevated temperature. The condensed water is as well as the water expelled from the solid materials are at least partially removed, whereupon the solid materials ale transferred into a steam atmosphere (4) at a temperature of the steam atmos- phere of at least 200°C and with supply of superheated steam. The solid materials are centrifuged within this steam atmos- phere, the steam of this steam atmosphere being passed along a closed circle through at least one heat exchanger (6) for obtaining and/or maintaining the temperature of at least 200°C. Excess steam is tapped off the steam to be supplied to the heat exchanger (6) and supplied to the first drying stage (2) operated with saturated steam. Finally, the solid materials are, after having been centrifuged, removed from the steam atmosphere and pressure released, whereupon the solid materials are, if desired, immediately transferred to a hot briquetting plant (13).
365788
Janusch Alois
Mayer Franz
Mcfadden Fincham
Voest - Alpine Aktiengesellschaft
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