Abstract:
A process to transform solid waste into fuel by adding water and heat to provide no more than 350 BTUs/lb of the weight of the solid waste for no more than 85 minutes. Such a process transforms the solid waste into fuel in a process time of not greater than 85 minutes. The system uses a pressure vessel; a condenser tank to permit selective addition of water to and evacuation of steam from the vessel; a heater to increase the temperature of the vessel; a vacuum pump to selectively reduce pressure within the vessel and to help evacuate steam from the vessel to the condenser tank; and a water pump to selectively add water from the condenser tank to the interior volume of the vessel. A method for converting solid waste into fuel includes loading the solid waste into a rotating pressure vessel and transforming the solid waste into fuel by adding water; reducing pressure; adding heat; and then evacuating steam. The contents are evacuated from the pressure vessel. At least some of the contents are fuel.
Abstract:
A method and apparatus for separating adhered paper from paper-covered gypsum board, involving passing the gypsum board past a magnet (16) to automatically remove ferrous materials from the gypsum board without stopping the process/apparatus, pulverizing (18) that gypsum board into a screenable mixture of pieces of paper and smaller separated gypsum board particles, and then screening (20) that mixture and segregating the pieces of paper from the gypsum board particles. This method and apparatus may optionally also include an area for manually pre-sorting and removing non-gypsum materials from the gypsum board prior to pulverization, may optionally also include additional screening steps, and may optionally also include passing the screened and segregated gypsum board particles past a second magnet. The magnets may have self-cleaning belts.
Abstract:
In order to provide an identification system for effectively identifying a kind of crushed resinous pieces an identification device is provided for irradiating a light beam to a polymer product being conveyed by a conveyor means, detecting the reflected beam or the dispersed beam from, the polymer product by sensor element, and identifying a kind of the polymer product based on a detected result, characterised in that said sensor element is disposed at a predetermined position in the vicinity of a conveying path of the polymer product, and a distance determination mechanism is disposed in said conveying means or in the vicinity thereof, for opposing the polymer product passing by said sensor element to said sensor element at predetermined distance between the both.
Abstract:
The unit for processing industrial rubber and plastic waste consists of a gasproof chamber (1), in which upper rollers (2) and lower rollers (3) are located in rows. The processed waste (4) passes between them, between the input and the output of the chamber (1). The lower rollers (3) are fixed in their position and the upper rollers are movable and attached by means of springs (5), which press them on the waste (4). The rollers (2 and 3) counter-rotate and the upper rollers (2) have projections (8) on their surface. The input area (10) with the input lifting closure (12) is placed on one front outer wall of the chamber (1) and the output area (14) with the output lifting closure (16) is placed on the opposite front outer wall of the chamber (1). Each area (10 and 14) is provided with a gas pipe (13) and is separated from the chamber (1) by an inner lifting closure (11). The discharge chute (18) with the lifting closure (20) provided with a gas pipe (13) is located on the outer bottom wall of the chamber (1) and is separated from the chamber (1) by the inner lifting closure (11). In the alternative type the unit consists of at least two joined unit-built chambers (1), the input area (10) with the input lifting closure (12) is located on one front outer wall of the unit. The output area (14) with the output lifting closure (16) is located on the opposite front outer wall of the unit.
Abstract:
Es wird ein Verfahren zur kontinuierlichen Desintegration von belebtem Schlamm in einer Kläranlage oder Abwasserreinigungsanlage beschrieben, bei welchem der belebte Schlamm von Bakterien biologisch abgebaut und der daraus entstehende Schlamm (5) in einem Behandlungs-Behältnis (1) mit Ultraschall beaufschlagt wird, um die Zellwände der Mikroorganismen zu spalten. Der Ultraschall soll dabei asymmetrisch im Behandlungs-Behältnis (1) erzeugt werden. Die Intensität des beaufschlagten Ultraschalles liegt in einem Bereich von 500 bis 1500 W/m 2 und der Schlamm (5) wird mit einer mittleren Verweilzeit von etwa 2 bis 4 Minuten im Gegenstrom durch das Behandlungs-Behältnis (1) geleitet. Die Vorrichtung zur Durchführung des Verfahrens weist ein Behandlungs-Behältnis (1) mit einem exzentrisch darin angeordneten Ultraschall-Resonator (7) auf.
Abstract:
An inspection system for sampling and determining the presence of residues of contaminants within plastic materials to be recycled from used plastic materials such as plastic beverage bottles or plastic food containers includes a chemical sniffing apparatus, or alternatively an optical scanner, for detecting the contaminants as the plastic materials are rapidly moved along a conveyor past a series of stations. Recycled food or beverage bottles are fed through a shredder in-line with the conveyor and the shredded plastic material from the bottles is fed to a washer. The bottles and shredded material may be tested for contaminants at any location in an in-line process. In one exemplary system first the bottles are tested prior to entry into the shredder in order to remove bottles containing gross contaminants. Second the shredded material emerging from the shredder is immediately tested for contaminants at an elevated temperature caused by the shredding process and contaminated materials are separated or sorted out from the uncontaminated material. Third, the materials are again tested for contaminants as they emerge from the washer once again taking advantage of the elevated temperature of the materials which is conducive to the emission of vapors of the contaminants. Contaminated materials are again sorted from the uncontaminated supply of materials to be used for the fabrication of new plastic food or beverage bottles.
Abstract:
A motor truck for use in collecting and processing solid waste material such as scrap tires. The truck includes a chassis including a cab (18); a body structure (34) positioned on the chassis behind the cab and defining a storage chamber (35); a shredder (36) mounted on top of the body structure (34) forwardly of the storage chamber (35); a compactor (38) positioned within the body structure (34) beneath the shredder (36) and forwardly of the storage chamber (35); and a conveyor system (40) for conveying tires from a curbside location upwardly for discharge downwardly into the open upper end of the shredder (36). The shredded tires are discharged downwardly into the body structure (34) rearwardly of the compactor (38), whereafter the compactor (38) is actuated to stroke rearwardly and compress the tire shreds into the storage chamber. After the truck has visited a series of retail tire outlets and the storage chamber (35) is full of tire shreds, the truck returns to a recycling center where a door (42) at the rear of the storage chamber is opened and the compactor (38) is utilized as an ejector to eject the tire shreds from the storage chamber (35). At the recycling center the tire shreds are processed to form a rubber crump material and the rubber crump material is combined with scrap plastic to form a rubbber/plastic resin compound in pellet form.