Abstract:
In a method for processing used cathode material containing carbon, in particular used cathode troughs from aluminum production, the cathode material is put into a shaft furnace and, in order to gasify carbon, is subjected to a thermal treatment in the shaft furnace at a temperature above the ignition temperature of the carbon and above the evaporation temperature of toxic substances contained in the used cathode material. The reaction gases are conducted co-current with the carbon in a first longitudinal section of the shaft furnace and countercurrent to the carbon in a second longitudinal section of the shaft furnace. The reaction gases are drawn from a region of the shaft furnace having an enlarged cross-section between the longitudinal sections and are preferably subjected to an after-treatment.
Abstract:
A system is provided with a segmented solid feed pump having a plurality of pump segments coupled together in series along a path. Each pump segment of the plurality of pump segments has opposite side walls disposed about a holding receptacle. The segmented solid feed pump also includes a first transport section disposed along a first portion of the path, wherein the first transport section includes a first inlet duct, a first outlet duct, and first opposite guides extending between the first inlet duct and the first outlet duct.
Abstract:
The present specification discloses operation of a waste treatment system for treating a feed by bringing the feed into contact with a molten metal in a first vessel. A jet of air is ejected from a lance into the molten metal to react with the molten metal to form a layer of molten slag-oxide. The feed is selected from coal, coal-liquid slurry, biomass, waste-derived material, crude oil, tar sands, shale-derived material, or a combination thereof. The molten metal bath material comprises carbon, silicon, manganese, chromium, sulfur, phosphorus, aluminum and titanium. Exhaust gases evolving from the molten metal and molten slag-oxide layer are directed to a second vessel to treat the exhaust gases to a pre-determined proximate gas molar composition.
Abstract:
In a method of processing paint sludge, measured portions of the sludge are supplied into a heating chamber for pyrolysis at about 1500° F. to disintegrate into organic and inorganic portions, the organic portion in the form of syngas is then drawn out, cooled, and pressurized to be used in kilns or combustion chambers, whereas the inorganic portion in the form of ash is directed to a calciner, where it is heated at about 1500° F. in a controlled presence of oxygen and cooled to have it ready for the reuse in paint manufacturing.
Abstract:
A method and apparatus are described for supplying municipal solid waste (MSW), and/or other types of solid waste comprising both organic waste material and inorganic waste material, into a plasma gasifier reactor (PGR) in which the solid waste is to be processed.
Abstract:
A system is provided with a segmented solid feed pump having a plurality of pump segments coupled together in series along a path. Each pump segment of the plurality of pump segments has opposite side walls disposed about a holding receptacle. The segmented solid feed pump also includes a first transport section disposed along a first portion of the path, wherein the first transport section includes a first inlet duct, a first outlet duct, and first opposite guides extending between the first inlet duct and the first outlet duct.
Abstract:
In a method for processing used cathode material containing carbon, in particular used cathode troughs from aluminum production, the cathode material is put into a shaft furnace and, in order to gasify carbon, is subjected to a thermal treatment in the shaft furnace at a temperature above the ignition temperature of the carbon and above the evaporation temperature of toxic substances contained in the used cathode material. The reaction gases are conducted co-current with the carbon in a first longitudinal section of the shaft furnace and countercurrent to the carbon in a second longitudinal section of the shaft furnace. The reaction gases are drawn from a region of the shaft furnace having an enlarged cross-section between the longitudinal sections and are preferably subjected to an after-treatment.
Abstract:
A waste processing system and method is described. The waste processing system may be used to treat any type of waste material that may be decomposed upon the application of energy, wherein recyclable metal and/or a gaseous end product is/are generated which may have commercial or industrial applications. The waste material may be reduced in size and passed to a purge vessel where the oxygen content of the waste material is reduced. The waste material is then heated in a heat exchanger which may be linearly elongated and passed to a conversion chamber where it is treated with H-H-O gas torches. A final gaseous end product is generated which may be used as a fuel source.
Abstract:
A waste processing system and method is described. The waste processing system may be used to treat any type of waste material that may be decomposed upon the application of energy, wherein recyclable metal and/or a gaseous end product is/are generated which may have commercial or industrial applications. The waste material may be reduced in size and passed to a purge vessel where the oxygen content of the waste material is reduced. The waste material is then heated in a heat exchanger which may be linearly elongated and passed to a conversion chamber where it is treated with H—H—O gas torches. A final gaseous end product is generated which may be used as a fuel source.
Abstract:
A method for pyrogasification of organic wastes that employs a vertical furnace filled with metal masses in the shape of metal toroids (2) previously raised to a high temperature (500 to 1100° C.) and organic materials to be pyrolyzed. It also employs a furnace for heating toroids transported by an Archimedes screw driven by a gear motor, as well as a separator for recovering the mineral residues, whereby separation between the toroids and residues is effected with the aid of a screen and an Archimedes screw driven by a gear motor.