Method and apparatus for drying

Details Method and apparatus for drying Method and apparatus for drying

2008-03-18

2008-03-18

Gravini, S. (Department: 3749)

Drying and gas or vapor contact with solids

Process

Gas or vapor contact with treated material

C034S080000

Reexamination Certificate

active

10518864

ABSTRACT:
The method of removing moisture from a material contained within a dryer (3) comprises heating a first stream of gas (A3); passing the heated stream of gas through a dryer (3) to extract moisture from the material to be dried; returning a first portion (E3) of the used gas from an outlet of the dryer (3) to the heater (2), re-heating the second stream of gas (E3) in the heater (2); and passing the heated second stream (B3) back into the dryer (3), wherein the first stream of gas (A3) is atmospheric air from which at least a proportion of the nitrogen present therein has been removed, to thereby increase the percentage by volume of oxygen in the first stream of gas (A3).

REFERENCES:
patent: 2236398 (1941-03-01), Drummond
patent: 4466202 (1984-08-01), Merten
patent: 4934148 (1990-06-01), Prasad et al.
patent: 4982512 (1991-01-01), McClenny
patent: 5108968 (1992-04-01), Ellingham et al.
patent: 6158147 (2000-12-01), Smith et al.
patent: 2002/0125591 (2002-09-01), Jaynes et al.

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