Drying and gas or vapor contact with solids – Process – With fluid current conveying or suspension of treated material
Reexamination Certificate
2005-08-23
2005-08-23
Gravini, Stephen (Department: 3749)
Drying and gas or vapor contact with solids
Process
With fluid current conveying or suspension of treated material
C034S367000, C034S378000
Reexamination Certificate
active
06931757
ABSTRACT:
The invention relates to a method for conditioning fibrous substances, especially wood fibers that are dried in a dryer. In a substantially closed drying circuit (1) a vapor-gas mixture is guided in said dryer as a circulating gas (referred to as vapors) that is separated from the dried fibers (6) in a separator (5) once it has passed the drier, and is then returned to a first heat exchanger (7) connected to the drying circuit (1). Gas is heated in a furnace (11) and is supplied to the heat exchanger to heat the vapors. A partial flow (8) of the vapors is coupled out upstream of the first heat exchanger (7) when seen in the direction of the drying circuit (1), heated in a second heat exchanger (10) and is then supplied to the furnace (11) and combusted. In order to reduce emissions and save energy, the partial flow (8) of vapors coupled out, before being heated in the second heat exchanger (10), is cooled in a vapor condenser (9) and depleted, and the resulting condensation product (14) is fed out.
REFERENCES:
patent: 5271162 (1993-12-01), Kunz et al.
patent: 5328562 (1994-07-01), Rafferty et al.
patent: 5637192 (1997-06-01), Mansour et al.
patent: 5935525 (1999-08-01), Lincoln et al.
patent: 29509816 (1995-06-01), None
patent: 19654043 (1996-12-01), None
patent: 0457203 (1991-05-01), None
patent: 0508546 (1992-04-01), None
patent: 0714006 (1996-05-01), None
patent: PCT/AT89/00047 (1989-05-01), None
patent: PCT/SE92/00214 (1992-04-01), None
Greubel Dieter
Gruber Timon
Fraunhofer-Gesellschaft zur Forderung der Angewandten Forschung
Gravini Stephen
Whitham Curtis & Christofferson, PC
LandOfFree
Method for conditioning fibrous substances does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for conditioning fibrous substances, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for conditioning fibrous substances will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3460523