Continuously operating multistage drying installation and a proc

Details Continuously operating multistage drying installation and a proc Continuously operating multistage drying installation and a proc

1980-02-28

1982-01-05

Schwartz, Larry I.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

34 31, 34 46, 34 48, 34155, 34203, 34216, 34217, F26B 304

Patent

active

043086675

ABSTRACT:
A continuously operating multistage drying installation is provided for drying a workpiece. The drying installation includes a conveyor belt for transporting along a predetermined path a workpiece having two opposite longitudinally extending surfaces and containing excess moisture. A first stage drier is located at an upstream portion of the path. This drier includes guide rollers for turning the workpiece over at least once so as to expose both of its surfaces to heat within the drier to thereby preliminarily dry the workpiece. A second stage drier is provided at the path downstream of the first stage drier for finishing the drying of the workpiece to a desired moisture level while maintaining the workpiece free from being turned over to thereby avoid cracking the surfaces of the workpiece due to pressure applied to the demoisturized and consequently relatively brittle surfaces thereof. A process is also provided for continuously drying the workpiece while avoiding pressure on the surfaces of the workpiece during the final drying stage.

REFERENCES:
patent: 1086194 (1914-02-01), Marquis
patent: 1310858 (1919-07-01), Dozier
patent: 1694489 (1928-12-01), Rubinstein
patent: 2758386 (1956-08-01), Cobb
patent: 2838420 (1958-06-01), Valente
patent: 3499229 (1970-03-01), Roberts
patent: 3545094 (1970-12-01), Schuette et al.
patent: 4195418 (1980-04-01), Sturgeon

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