Apparatus for dissicant drying and conveying of a granulate and

Details Apparatus for dissicant drying and conveying of a granulate and Apparatus for dissicant drying and conveying of a granulate and

1980-08-13

1982-04-20

Schwartz, Larry I.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

34169, F26B 1508

Patent

active

043251927

ABSTRACT:
An apparatus for preheating and drying a granulate (43) comprises an inlet (61), a discharge (3a, 3b), a blower (10), air guide pipes (9, 15, 16, 19, 23, 24, 25, 31), a valve (11), and a heater. For creating three air circuits, an adjustable, multiport valve and a reversible blower (10) are provided. In each position, air from the blower passes in two directions through said multiport valve (11). The apparatus comprises a heat accumulator (161). The first circuit dries the granulate (43), the second circuit regenerates a humidity adsorbing material, and the third circuit transports material to the drier. The accumulator (161) preheats air during the regeneration, re-uses accumulated heat from said regeneration during the granulate drying cycle. The multiport valve is adjustable to various positions, gas in each position being directed along two paths through the valve. The valve comprises two manifolds (13, 14) with hubs (131, 133, 134, 135, 141, 142, 143) leading to opposing orifices (131b, 131c, 132b, 133b, 134b, 135b). An apertured disc is rotatably located between the manifolds.

REFERENCES:
patent: 2311824 (1943-02-01), Gautreau
patent: 2364697 (1944-12-01), Daniels
patent: 2871574 (1959-02-01), Thies
patent: 3621585 (1971-11-01), Robertson
patent: 3972129 (1976-08-01), Graff
"Dry-Air Dehumidifying Hopper Dryer Systems", brochure.
"Engineering Data" No. 919 by Conair, Inc.
"Continator" by Laboratorie Teknik.
"Interplas 77" by Laboratorie Teknik.
"Plastics Dryers and Preheaters" by Conair.

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