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Class 34/477 - With recirculation of gas or vapor


Subclass of Class 34 - Drying and gas or vapor contact with solids
Definition: Process wherein the treating gas or vapor after contacting
No. of patents: 24
Last issue date: 06/01/2010


NumberTitleIssue Date
7726040Apparatus and method for the uniform drying of board materials
Disclosed is an apparatus and method for the uniform drying of boards, such as gypsum wallboards. The apparatus includes a dryer through which a series of boards are conveyed in a side-by-side relationship. While in the dryer, heated air is delivered over the boards...
06/01/2010
RE39271Method and apparatus for drying granular solids with venturi powered gas circulation
A method and an apparatus for drying plastic pellets utilizes a venturi air mover (20) in a recirculation loop communicating with a drying hopper (10) containing the plastic pellets. A portion of moist air flow in the recirculation loop is vented to th...
09/12/2006
7100303Apparatus and method for the heat treatment of lignocellulosic material
There is provided an apparatus and a method for heat treatment of lignocellulosic material. The apparatus comprises a treatment chamber and devices for circulating and recovering gases from the treatment chamber such as to provide a uniform temperature within the ch...
09/05/2006
6910285Process to produce dried singulated cellulose pulp fibers
This invention provides a dried singulated cellulose pulp fiber product as well as an apparatus and a method for forming singulated and dried fibers. In accordance with the process a feed pulp is delivered to a jet drier. The jet drier singulates and dries the feed ...
06/28/2005
6484417Dryer apparatus and dryer control system
An improved dryer (10) and drying methods are provided which increase overall dryer efficiency by maintaining substantially constant output air stream adiabatic saturation ratio and temperature values during the course of drying, notwithstanding the occur...
11/26/2002
6415528Drying device for drying bulk material
A drying device for drying bulk material has one or more storage containers for the bulk material and a heating device for heating the drying air for drying the bulk material. A drying air conduit is connected to the heating device and the storage contain...
07/09/2002
6357144Two stage process for drying of raw wood material
Method for drying wood raw material (10) by means of hot gases (20) supplied to the drying process, in which VOC, apart from water, evaporate from the wood raw material into the gases. The drying process is divided and carried out in at least two sub-step...
03/19/2002
5983521Process for splitting recycled combustion gases in a drying system
A process for drying a wet material in a drying system includes supplying a current of heated gas to a dryer from a combustion chamber. The material is exposed to the current in the dryer. The dried material is separated from the current of heated gas. Th...
11/16/1999
5970625Automated air filtration and drying system for waterborne paint and industrial coatings
An automated air filtration and drying system including an energy and environmental management system for controlling, monitoring and supervising the operation and performance of the air filtration and drying system, a capture apparatus for capturing and ...
10/26/1999
5966838Process and apparatus for drying material with indirectly heated driers and for decontaminating waste gas
A process and apparatus for drying material, particularly sludges, with indirectly heated driers includes a system for the thermal decontamination of exhaust air from the drier. Excess exhaust air from the drier loop is fed as secondary air to the heating...
10/19/1999
5899004Wood smoking-seasoning method
A furnace is set to the floor section where wastes such as wood chips, scrapped wood, or wood pieces are put, flammable wastes such as planer chips, plane chips, bark, branches and leaves, or waste paper are arranged as an ignition material so as to cover...
05/04/1999
5813135Conditioning of fabrics by recirculating air/steam method and apparatus
The present invention is directed to a coaxial waveguide applicator for an electromagnetic wave-activated sorption system which comprises at least one sorber having a metallic tubular housing defining an outer conductor and first and second ends which are...
09/29/1998
5731157Two-site allergen immunoassay
An allergen immunoassay method features the use of a combination of a) closely controlled 1) elevated temperatures for assay reactions, 2) low temperatures for reagents and samples, 3) times for assay steps and especially assay reaction times, 4) reagent ...
03/24/1998
5657553Substrate drying apparatus
A substrate drying apparatus comprises a treatment vessel for containing IPA in the form of liquid, an IPA source for supplying IPA into the treatment vessel, a first heat exchanger which is equipped with a heat exchanger tube dipped in IPA and allowing s...
08/19/1997
5636449Water removal from solid products and apparatus therefor
A tube dryer system is used to remove moisture from solid commercial products. The present apparatus includes a condensate vessel that separates condensed steam from excess steam. The excess steam is passed through a thermocompressor and combined with inc...
06/10/1997
5603168Method and apparatus for controlling a dryer
A method and apparatus for operating a dryer used to reduce the moisture content of sheet material such as a jet veneer dryer. A drying chamber is provided and includes a plurality of individual, juxtaposed drying sections. Each drying section circulates ...
02/18/1997
5588222Process for recycling combustion gases in a drying system
In a process for drying material in a drying system, a first current of heated gas is supplied to a first dryer from a corresponding first combustion chamber. Material to be dried is exposed to the first current in the first dryer. The dried material is s...
12/31/1996
5456022Batch-type sludge drier
A drier having a boxlike housing (12) for receiving a hopper (13) therein which contains a batch of wet sludge. The hopper (13) cooperates with the housing, when closed therein, to define a closed air recirculation system which supplies dry pressurized wa...
10/10/1995
5367787Drying machine
A drying machine has a drying chamber for drying an article cleaned with an inflammable solvent as a detergent. A hot air supply channel communicates with the drying chamber and a heater is mounted in the hot air supply channel. A hot air evacuation chann...
11/29/1994
4725337Method for drying low rank coals
A process is disclosed for removing a substantial portion of water and impurities from low rank coal and peat, whereby an improved coal or peat product (not found in nature) is obtained. The low rank coal and peat are subjected to a superheated gaseous me...
02/16/1988
4633593Method for the controlled drying of materials
A method of drying a material by passing a gas through and over the material, includes the steps of warming the material without effectively reducing the moisture content thereof by maintaining the enthalpy substantially constant and by maintaining a mini...
01/06/1987
4523388Method for drying by vapor recompression
Method for drying damp material by vapor recompression. The vapor (8) released by the damp material (4) circulating on the heating elements (2) of a vertical dryer is recompressed by means of a motor-compressor (9) so as to provide the heat-conveying flui...
06/18/1985
4281465Method and apparatus for the recovering of solvents in dry cleaning units
In a process for recovering solvents from the circulating air and exhaust air of a drycleaning machine by drying the circulating air and by fresh air drying with condensation and adsorption, the volume of air stream per unit volume is controlled in accord...
08/04/1981
4089738Method and apparatus for influencing the characteristics of the surface of a paper product
During the manufacture of a paper product such as paper or cardboard, a moving web of sheet material which is to form the paper product is lapped over a roll while the relatively smooth, hard surface of a smoothing member is pressed against an outer surfa...
05/16/1978
 
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