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Class 432/111 - Counterflow of work and combustion products


Subclass of Class 432 - Heating
Definition: Apparatus in which the work material and combustion products
No. of patents: 75
Last issue date: 11/18/2008


1    
NumberTitleIssue Date
7452203Stratified staging in kilns
In a kiln whose interior is heated by combustion with oxidant having a higher oxygen content than air, streams of staging oxidant are fed into the space between the combustion zone and the inner surface of the kiln, and the stoichiometric ratios and amounts of oxyge...
11/18/2008
7204182Apparatus for heating spent ammunition cases
An apparatus for destroying the volatility of propellant and primers associated with small arms ammunition which become inadvertently commingled with a supply of spent casings prior to material deformation and reclamation. The apparatus preferably includes three maj...
04/17/2007
7204636Granular and aggregate blending, cooling and screening rotary drum
A rotary drum configured for the efficient blending, cooling, and screening of granular products having an outer cylindrical shell, an intake end, and an exit or discharge end. The rotary drum is normally rotated at a predetermined speed by a conventional drive pack...
04/17/2007
7104788Device for purifying and/or decontaminating polyester
The invention relates to an apparatus for cleaning and/or decontaminating polyester, in particular polyethylene terephthalate (PET). The apparatus has an at least partially heated rotary tubular furnace to be fed with a mixture of polyester and an alkaline material ...
09/12/2006
7044630Counter-flow asphalt plant method
A method for operating a counter-flow aggregate dryer for an asphalt plant in which primary aggregate materials are introduced into a first end of a horizontally rotating cylinder and travel to the second, discharge end of the cylinder through drying and combustion ...
05/16/2006
7033167Device for purifying and/or decontaminating polyester
The invention relates to an apparatus for cleaning and/or decontaminating polyester, in particular polyethylene terephthalate (PET). The apparatus has an at least partially heated rotary tubular furnace to be fed with a mixture of polyester and an alkaline material ...
04/25/2006
6685465Drum heater with hot gas conduit segments, in particular for asphalt recycling
A rotary drum heater for mixing asphalt with a hot gas introduced into the drum by gas burners is disclosed. The drum has an inlet opening for material to enter the drum to be processed and an outlet opening for material to exit. The hot gas is blown into...
02/03/2004
6672751Counter-flow asphalt plant with combustion zone feed and exhaust gas heater
A counter-flow aggregate dryer for an asphalt plant is equipped with a secondary feeder for introducing RAP or virgin materials intermediate the ends of the combustion zone of the dryer. Nonveiling flights in the combustion zone shield material carried th...
01/06/2004
6478461Transportable hot-mix asphalt manufacturing and pollution control system
A hot-mix asphalt manufacturing system including treatment of emissions and recirculated gases includes a counter-flow rotary dryer 12 having a combustion chamber 28, an inlet 24 for dry ingredients, an outlet 26 for hot-mix asphalt, and a plate collector...
11/12/2002
6379610Apparatus and process for treating a particulate material within a rotating retort
Apparatus (1) and process for treating particulate material or powder (33) of a size capable of being fluidized in a retort (31) mounted for rotation on a pair of end axles (18, 41). Retort (31) is mounted on a tilt frame (5) for tilting movement in a ver...
04/30/2002
6340240Drum mixer having isolated aggregate transport channels
A drum mixer for heating, mixing and drying an aggregate material, such as a mixture of recycled asphaltic pavement and virgin aggregate. The drum mixer includes an inclined drum having a first end and a second end. The drum forms a pre-heating/blending s...
01/22/2002
6267493Drum mixer having a plurality of isolated aggregate transport channels
A drum mixer for heating, mixing and drying an aggregate material, such as a mixture of recycled asphaltic pavement and virgin aggregate. The drum mixer includes an inclined drum having a first end and a second end. The drum forms a pre-heating/blending s...
07/31/2001
6253689Incinerator
A waste incinerator which includes a housing formed by a heat insulating outer wall, air ducts; a decomposing chamber; a fire room; and a catalytic converter, all disposed in the housing. Waste is introduced into the fire room and incinerated there, and t...
07/03/2001
6185842Apparatus and methods for controlling the temperature of exhaust gases in a drum mixer
A inclined rotary drum mixer has flights for forming a veiling pattern of particles across the width of the drum for a substantial axial extent. The drum has a burner for flowing hot gases of combustion in heat transfer contact with the particle or aggreg...
02/13/2001
5997288Apparatus for thermal removal of surface and inherent moisture and limiting rehydration in high moisture coals
A flighted, horizontally inclined rotary retort, heated externally by flame, hot gases, steam or other sources of heat. The retort shall have sufficient flight area to transport the coal through the retort in the predetermined time. The coal being process...
12/07/1999
5937771Method of processing kiln exhaust gases by chlorine bypass system and apparatus therefor
In the processing of exhaust gases by a chlorine bypass system, a portion of kiln exhaust gases G is extracted from a kiln 1, after the extracted exhaust gases G are instantly cooled to 600° C. to 700° C. or less, the dust W in the cooled exhaust gases ...
08/17/1999
5904904Treatment of contaminated particulate material by low-temperature thermal desorption with indirect heating
Contaminants are removed from particulate material in an inclined, rotating drum which has an inlet for contaminated material at its upper end, an outlet at its upper end for vaporized contaminants, an inlet for air that is located between the upper end a...
05/18/1999
5810471Recycled asphalt drum dryer having a low NOx burner
An apparatus for the treatment of 100% reclaimed asphaltic pavement (RAP) uses low temperatures and no direct radiation from a burner flame to the RAP. The RAP is first heated in a counter flow drum which is supplied with hot combusting gases generated by...
09/22/1998
5664882System for concurrently remediating contaminated soil and producing hot mix asphalt
A system for concurrently remediating contaminated soil and producing hot mix asphalt includes a single inclined rotary drum; a burner assembly with a burner head spaced intermediately within the drum and oriented to direct a flame and hot gas stream upst...
09/09/1997
5662052Method and system including a double rotary kiln pyrolysis or gasification of waste material
A method of destructively distilling an organic material in particulate form wherein the particulates are introduced through an inlet into one end of an inner rotating kiln ganged to and coaxial with an outer rotating kiln. The inner and outer kilns defin...
09/02/1997
5658094Energy recuperative soil remediation system
An improved system for remediating soil contaminated with short-chain hydrocarbons, long-chain hydrocarbons and PCB's. The system includes an rotary drum having first and second heat exchanging regions, each containing separated inner and outer regions. T...
08/19/1997
5572938Oxygen lancing for production of cement clinker
Oxygen is lanced into the main combustion reaction of a cement kiln to increase heat transfer to the clinker bed and to increase clinker production. Oxygen is separately lanced along the floor, i.e. the lowest wall of the kiln, to delay mixing with the fl...
11/12/1996
5523060Apparatus for retorting material
An apparatus is disclosed for the separation and extraction of a waste material into a solid, a liquid, and a gas phase utilizing a rotating drum that is sealed from the atmosphere. The exterior of the drum is heated and the waste material flows through t...
06/04/1996
5513443Dryer for aggregate and reclaimed asphalt products
A dryer for use in an asphalt plant for heating and drying virgin aggregate and also pre-heating reclaimed asphalt products (RAP). A drying drum cylinder having a burner at one end heats and dries virgin aggregate traveling therethrough. A second cylinder...
05/07/1996
5482458Heat treatment of expansible materials to form lightweight aggregate
A rotary kiln (10) is employed which is inclined downwardly from its charge end (12) to its discharge end (14) and has a maximum length to breadth ratio of 5:1. The interior space of the kiln (10) is heated by means of at least one burner (B1, B2) directe...
01/09/1996
5470146Countercurrent drum mixer asphalt plant
A drum mixer asphalt plant is provided with a rotatable cylinder 10 in which virgin aggregate, recycle material and liquid asphalt are mixed to produce an asphaltic composition and the hot gas stream for heating and drying the materials flow in countercur...
11/28/1995
5455005Material remediation in multi-function heating drum
Material remediation apparatus includes a remediation drum through which materials, such as soil contaminated with hydrocarbons, are advanced from a feed end to a discharge end of the drum. A tube extending concentrically from the discharge end of the dru...
10/03/1995
5393501Material remediation in multi-function heating drum
Material remediation apparatus includes a remediation drum through which materials, such as soil contaminated with hydrocarbons, are advanced from a feed end to a discharge end of the drum. A tube extending concentrically from the discharge end of the dru...
02/28/1995
5372458System for treating drilling mud containing potassium chloride (KCl) for disposal
A method is provided for treating used potassium chloride (KCl) drilling mud for disposal. The process comprises feeding the mud into one end of a rotary tube, advancing the mud through the rotating tube and heating the mud by cascading action using lifte...
12/13/1994
5320524Gas scrubber for wet process rotary kilns
In the initial part of a wet-process rotary kiln, means to decrease the amount of product dust entrained in the escaping combustion gases. Pipes running lengthwise of the kiln, in the region where the feed slurry is wet enough to flow, fill with slurry as...
06/14/1994
5320426Asphalt drum mixer having temperature sensor enclosure
A drum mixer is useful in the continuous production of asphalt paving composition, and has provision for the accurate control of the final temperature of the composition being produced. The drum mixer comprises a fixedly mounted cylindrical sleeve dispose...
06/14/1994
5295821Foundry sand thermal reclamation system and method
A thermal treatment system and method characterized by an outer drum mounted on the base for rotation about a rotational axis; an inner drum mounted coaxially within the outer drum closer to a heater end thereof than an inlet end of the outer drum, the in...
03/22/1994
5286200Rotary kiln
A rotary kiln with primary air feed at the end wall of the rotary kiln is distinguished by the feature that at least two primary air nozzles are oriented relative to each other and to the fuel bed so that two oppositely directed vortices are generated wit...
02/15/1994
5271340Apparatus and methods for burning waste, and waste slurries
Burners for burning waste, comprising a conventional fuel nozzle and a waste slurry nozzle. Waste slurry nozzles, comprising a first conduit, a second conduit and an acceleration zone comprising a mixing chamber and an acceleration conduit. Waste slurries...
12/21/1993
5228803Apparatus and method for thermally stripping volatile organic compounds from soil using a recirculating combustible gas
A transportable thermal stripping system for removing volatile organic compounds (VOC) from soil is provided. The system includes a vessel in which contaminated soil is placed into contact with a hot gas. The gas is discharged from the vessel and ambient ...
07/20/1993
5203859Oxygen-enriched combustion method
A process and apparatus for oxygen-enriched combustion of a fuel in an industrial furnace in which a preheated primary oxidant from a heat exchanger and a fuel to be combusted are introduced into a combustion chamber and ignited, a secondary oxidant havin...
04/20/1993
5195887Remediation of hydrocarbons from soils, sand and gravel
A high throughput apparatus and process for thermal remediation of soil contaminated with volatile organic compounds has a dryer with a high capacity heat source to volatilize and combust the compounds contained in a first lot of soil. The remediated soil...
03/23/1993
5122190Method for producing a hydraulic binder
A method for producing a hydraulic binder using partially calcined raw meal entrained in the kiln off gases. The raw meal flow form the lowermost cyclone is interrupted at or near the junction of the meal chute, kiln inlet and riser duct. This flow interr...
06/16/1992
5102330Opposed fired rotary kiln
A rotary kiln system wherein oxidant injection means are positioned at each stationary end and inject oxidant toward each other creating gas recirculation within the rotary kiln for improved mixing, combustion efficiency and temperature uniformity....
04/07/1992
5067254Method and apparatus for modifying a veil of materials in a drum of a drying apparatus
An improvement to a drum drying and mixing apparatus includes a baffle plate arrangement is supported externally of the drum adjacent one end thereof and is inserted longitudinally from that one end into the drum. Baffle plates of the arrangement are disp...
11/26/1991
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