Drying and gas or vapor contact with solids – Apparatus – With waste gas heat and/or power conservers
Patent
1997-12-19
1999-09-14
Bennett, Henry
Drying and gas or vapor contact with solids
Apparatus
With waste gas heat and/or power conservers
34219, 34 78, F26B 1900
Patent
active
059503220
ABSTRACT:
A drier for wood chips and other bulk materials includes an incinerator for indirectly heating a drying apparatus. The drier operates in a circulatory gas operation with a high water vapor load. All drier exhaust gases are fed to the incinerator and thermally post-combusted there. The drying apparatus includes two drier lines. The first line is heated with the heat of the inflowing vapor, the heat being removed from the exhaust gas flow in a gas-gas heat exchanger and supplied to the vapor feedback. The second drier line includes a heat register, whose heat is extracted from the exhaust gases in a heater, which is arranged directly after the incinerator and reduces the exhaust gas temperature to approximately 500.degree. to 600.degree.. The gas-gas heat exchanger can thus be embodied as a simple sheet metal structure.
REFERENCES:
patent: 5237757 (1993-08-01), Wiedmann et al.
patent: 5271162 (1993-12-01), Kunz et al.
patent: 5697167 (1997-12-01), Kunz et al.
Article from "Swiss Combi News" entitled "ecoDry und ecoTwin" by W. Kunz AG f Switzerland, four pages, Sep. 1994.
Bennett Henry
Firma Starcosa-Tag, Division of Braunschweigische Maschinenbauan
Wilson Pamela A.
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