Drying and gas or vapor contact with solids – Apparatus – With means to treat gas or vapor
Patent
1986-10-31
1987-12-22
Schwartz, Larry I.
Drying and gas or vapor contact with solids
Apparatus
With means to treat gas or vapor
34 31, 34 48, 34 56, F26B 2106
Patent
active
047138939
ABSTRACT:
A thermal dryer used to dry wet material includes a drying chamber and a storage bin. Material is transferred from the storage bin onto a movable support means positioned within the drying chamber. A furnace supplies hot gas to the drying chamber and the gas passes over the movable support means to dry the wet material positioned thereon. The temperature of the gas that has been passed over the wet material is automatically maintained at a preselected temperature by controlling the amount of wet material on the movable support means. The temperature of the gas that has been passed over the support means is controlled independently of the temperature of the gas supplied by the furnace. The amount of wet material in the storage bin is automatically maintained below a preselected amount by controlling the temperature of the hot gas supplied by the furnace to the drying chamber. When the amount of wet material exceeds the preselected amount, the temperature of the hot gas supplied by the furnace is increased. This results in a corresponding increase in the temperature of the gas that has been passed over the wet material. In order to reduce the temperature of the gas that has been passed over the wet material, the amount of wet material positioned on the movable support means is increased. An increase in the amount of wet material transferred from the storage bin to the movable support means results in a reduction in the amount of wet material in the storage bin.
REFERENCES:
patent: 3186102 (1985-06-01), Brociner et al.
patent: 4305210 (1981-12-01), Christensen et al.
Consolidation Coal Co.
McCartney Alan N.
Price Stanley J.
Schwartz Larry I.
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