Class 432/21 - Including recycling work atmosphere

Subclass of Class 432 - Heating
Definition: Process in which the atmosphere is controlled by recycling
No. of patents: 29
Last issue date: 08/08/2006

Number	Title	Issue Date
7086856	Carbon baking furnace A carbon baking furnace comprising a refractory lined kiln defining a baking path, further comprising a means for substantially continuously receiving green carbon articles, means for packing said green carbon articles in a sacrificial medium, a means for substantia...	08/08/2006
7074033	Partially-open fired heater cycle providing high thermal efficiencies and ultra-low emissions A partially open fired heater regenerative cycle wherein the fired industrial type heater cycle's heat transfer fluid replaces the air predominant nitrogen heat transfer fluid employed in a conventional air/fuel combustion heater. The heater cycle's method and appar...	07/11/2006
6944969	Method and installation for drying a mass of fibrous materials by mechanical compression of very moist air The present invention pertains to a method and an installation or system for drying fibrous material. The method comprises the step of ventilating very moist air through the fibrous material located in a drying zone. The moisture content of the moist air is less tha...	09/20/2005
6889446	Drier for objects, particularly for vehicle bodies, and method for operating such a drier A drier for objects, particularly for vehicle bodies, comprises, in a per se known manner, a housing in which is formed a drying chamber which accommodates the objects. In the said drying chamber, the objects are subjected to an IR radiation generated by at least on...	05/10/2005
5868562	Paint drying furnace Disclosed is a paint drying furnace for baking and drying paint films on painted objects following a painting process. The furnace of the invention has an interior combustion type heating device arranged on fresh air passages upstream of points of connect...	02/09/1999
5322651	Method and apparatus for the thermal treatment of thermoplastic preforms Preforms are thermally treated in a continuous-run oven equipped with infrared lamps. The portions of the oven exposed to infrared radiation are cooled by an air flow, whose temperature is kept constant by mixing air at ambient temperature with hot air. T...	06/21/1994
5184951	Regenerative thermal oxidizer An apparatus having an incineration chamber and at least one burner for oxidizing fumes is provided. First and second regenerators are in fluid communication with the incineration chamber, as is a bypass which introduces unburnt fumes to the incineration ...	02/09/1993
4854860	Convective heat transfer within an industrial heat treating furnace An improved heat transfer arrangement for use in a unique multi-function, industrial heat treat furnace which employs a sealed, closed end, heat exchanger shell member containing the work. The heat transfer arrangement includes a totally contained, intern...	08/08/1989
4845334	Plasma furnace inert gas recycling system and process A system and method for conditioning and recycling inert gases which are used in a plasma furnace. The method comprises the steps of receiving the gas that is output from the plasma furnace and cooling the gas to a desired temperature. Substantially all t...	07/04/1989
4737315	Method of treating radioactive organic wastes Radioactive organic wastes, such as granular or powdered ion exchange resins and organic filter aids, are treated by oxidation decomposition using hydrogen peroxide in the presence of iron ions in an aqueous medium under refluxing an effluent which is con...	04/12/1988
4514167	Oven heating system A conveyor is driven in a helical endless fashion within a horizontally annular baking chamber while carrying products to be baked. The air within the chamber is heated by means of burners disposed beneath the conveyor and in non-parallel relationship the...	04/30/1985
4490107	Method of processing charges in a continuous combustion furnace A continuous combustion furnace in which the charges to be heat processed is passed through the tunnel in the kiln having three temperature zones comprising a preheating zone, a firing zone subsequent to the preheating zone and a cooling zone subsequent t...	12/25/1984
4460331	Fume incineration for paint drying oven A fume incineration system for an industrial process site such as a paint-drying oven (10) producing a combustible effluent. A first duct system (34, 38, 42) conveys effluent to the incinerator (14). A second duct system (44, 48) conveys incinerated efflu...	07/17/1984
4354827	Process and device for improving heat exchange in furnaces heated by radiant heaters A furnace is described as having a heat treatment chamber which is provided with banks of radiant heaters to heat a load that is placed within the chamber for heat treatment. The radiant heating of the load is improved by the addition of convection heatin...	10/19/1982
4268247	Method for drying fabrics To dry wet fabrics, a hot drying gas is introduced into a drying chamber containing the fabrics. The drying chamber is maintained at a sufficiently high pressure greater than atmospheric pressure so that a portion of the gas in the drying chamber can be d...	05/19/1981
4255132	Incinerator-heater system A high efficiency system and method for supplying heat energy to a combustible effluent producing primary process, such as to a paint drying oven, in which the output of an incinerator-heater is controlled in order to be matched to the heat energy require...	03/10/1981
4240787	Drying oven with heat reclamation and air pollution control system A system of drying ovens is disclosed with associated means for heat reclamation and air pollution control. The ovens are primarily for drying or baking paint or other coatings on pipes or the like where the emissions are primarily hydrocarbons. In this s...	12/23/1980
4235591	Continuous flow oven A continuous flow heating oven of the industrial type used for the heating of ingots, sheet material and the like, which may be of light metal or light metal alloy, includes a burner fired with a liquid or gaseous fuel disposed within a heating chamber. T...	11/25/1980
4217091	Oven process with solvent free exhaust A method of curing a solvent based coating on a strip comprising passing the strip through oven zones, circulating hot gases in the zones to vaporize solvents and entrain them in such gases and cure the coatings, the solvents being released in high volume...	08/12/1980
4217090	Oven heating system A strip curing oven apparatus for treating a workpiece carrying a coating containing a vaporizable solvent which is oxidizable to provide at least part of the heat requirement of said oven apparatus and which oven apparatus comprises an oven having a plur...	08/12/1980
4191598	Jet recirculation method for vacuum carburizing A method and apparatus for recirculation of atmosphere in a vacuum furnace which comprises a recirculation loop in which there is a low pressure line from the furnace chamber leading to a recirculation pump which pumps the recycled gas at a higher pressur...	03/04/1980
4191525	Aspiration circulation system and method An improved atmosphere circulation system involving the use of aspirators for inducing turbulence of pressurized atmosphere within a vessel promotes temperature uniformity within the vessel and, for a given degree of temperature uniformity, reduces energy...	03/04/1980
4174951	Furnace heating system A system for heating a furnace having a heating chamber defined by furnace walls is provided with a plurality of individual burner assemblies mounted on a furnace wall to direct heating gas streams into the heating chamber, each of the burner assemblies i...	11/20/1979
4069071	Method for generating a reducing atmosphere for heat-treating installations An atmosphere of nitrogen containing hydrogen is generated by cracking amia and recycling a previously generated atmosphere that already had been used. The atmosphere generated by cracking, and the recovered atmosphere that previously had been used, are ...	01/17/1978
4059395	Device for removing carbonizable residues Device for removing carbonizable residues includes a closed furnace heatable to low-level carbonization temperature, the furnace having an outlet for carbonization gases formed therein, means for burning off carbonization gases from carbonizable residues ...	11/22/1977
4047884	Means and method for processing cement raw materials containing fuel of high volatile content A means and method for processing cement raw material containing fuel of high volatile content in a reinforced grate preheater kiln system by collecting the unburned volatiles of the high volatile fuel from the pellet bed and utilizing the collected volat...	09/13/1977
4011041	Tobacco curing and drying apparatus Leaf tobacco or the like in a substantially airtight enclosure is cured and dried by circulating through the enclosure air that is controllably heated by a forced air fuel burner located in an elongated vertically oriented duct outside the enclosure. The ...	03/08/1977
3995988	Fuel saving apparatus and method for textile drying and finishing An apparatus and method of textile drying and finishing wherein a portion of the discharge air from the dryer containing moisture is recirculated directly into the combustion zone of a burner wherein it is blended with fresh air then returned to the dryer...	12/07/1976
3969069	Burner systems for ovens and methods of operating such systems Burners of an oven are operated to satisfy heat loads changeable between a high load and substantially smaller loads. At least under the smaller loads the burners are cyclically controlled in a cycle of time periods T-1 and T-2. During the periods T-1 the...	07/13/1976

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Class 432/21 - Including recycling work atmosphere