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Class 34/504 - Countercurrent gas or vapor flow


Subclass of Class 34 - Drying and gas or vapor contact with solids
Definition: Process wherein the direction of flow of the treating gas
No. of patents: 16
Last issue date: 02/05/2008


NumberTitleIssue Date
7325331Method and equipment for drying a pulp web using hot air of different temperatures
The invention relates to a method for drying a fibre-based pulp web (2), and to a drying box (1) used in the method. According to the invention, the drying box (1) contains drying zones (9a-9e), to each one of which h...
02/05/2008
7175739Method for incorporating feature substances into a paper web
A method and apparatus for incorporating feature substances into a still moist but already sufficiently consolidated paper web provides for directing a feature substance suspension onto the surface of the paper web as a laminar jet with low jet pressure. A special p...
02/13/2007
7007402System and method for drying particulate materials using heated gas
A system and method for drying particulate material in a dual flow hopper employs multiple flow paths by which heated gas is inserted into the hopper at different levels. Gas is extracted from the hopper and is divided for flow along two flow paths, one of the flow ...
03/07/2006
6968705Method and plant for cooling fluids by direct contact with liquefied gases
A method and apparatus for cooling a fluid in the liquid state, possibly also containing solid elements, comprising feeding said fluid into a containing member for said fluid and also feeding into said member a cooling fluid in the liquid state, such as a liquefied ...
11/29/2005
6564473High efficiency heat transfer using asymmetric impinging jet
A method and apparatus for impingement of fluid onto a moving surface. The apparatus includes an asymmetric slot nozzle having an opening formed between an upstream wall and a downstream wall. The nozzle is disposed generally adjacent the surface onto whi...
05/20/2003
6393730Drier, drier assembly and drying method
The drying assembly includes a drying apparatus with a far-infrared-ray radiator and ultraviolet irradiator. This ultraviolet irradiator is provided in the rear of the drying apparatus and the irradiation amount irradiated from the device is about 300 to ...
05/28/2002
5906862Apparatus and method for drying a coating on a substrate
A method and apparatus for coating and drying coated substrates without introducing significant surface imperfections while running at higher web speeds than known drying methods. The substrate is preferably coated within the drying enclosure or the coati...
05/25/1999
5659975Board drying process and drier
In order to dry boards, the boards are guided on racks through a drier and brought into contact with drying air in two stages. In a stage A with a higher drying power, the drying air is supplied at a higher temperature and with an at least average humidit...
08/26/1997
4731938Anaerobic pasteurizing conditioning system
An anaerobic, pasteurizing conditioning system for treating matter such as whole and ground grain and minerals to increase the rate of conversion during digestion and thus the nutritional value thereof. The system comprises a direct fired steam generator ...
03/22/1988
4667418Anaerobic pasteurizing conditioning system
An anaerobic, pasteurizing conditioning system for treating matter such as whole and ground grain and minerals to increase the rate of conversion during digestion and thus the nutritional value thereof. The system comprises a direct fired steam generator ...
05/26/1987
4646447Process and plant for continuous drying using heat pumps
A process and a plant for continuously drying products with the use of increasing temperatures towards the end of the drying process, the drying process using the so-called multiple transverse stirring. There is admitted in the zone of completion of the d...
03/03/1987
4312136Arrangement and method of drying articles
Wet plasterboard to be dried is advanced along a path. At an upstream portion of the path, air is heated and directed towards the plasterboard for initial drying of the latter. A portion of the heated air is withdrawn and passed through one section of a h...
01/26/1982
4308669Advanced optimum continuous crossflow grain drying and conditioning method
A continuous grain drying and conditioning apparatus of a type including a burner and blower, or a multiplicity of burners and blowers, surrounded by a plenum chamber, air pervious grain holding walls positioned outwardly with respect to the plenum chambe...
01/05/1982
4181420Development device for developing sheets of diazo copying material
This invention relates to a development device for developing sheets of diazo copying material, in particular microfiches, comprising a substantially gas-tight, closed development chamber adapted to contain a developer medium composed of ammonia gas and w...
01/01/1980
4176465Heat saving method for drying wet solids
A heat saving method for drying wet particulate solids as the latter move upwardly in a loaded screw flight conveyer wherein, by establishing a non-condensable gas barrier at the upper end of the flight, the vapors formed by heating the upwardly moving ma...
12/04/1979
4126519Apparatus and method for thermal treatment of organic carbonaceous material
An apparatus and method for performing a continuous thermal treatment of organic carbonaceous materials under controlled pressure in which the feed material is introduced into the system in the form of a slurry, and the level of liquid is maintained at a ...
11/21/1978
 
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