Abstract:
A method and apparatus for safely conveying hazardous solid waste material to a waste processing system; for enhancing its subsequent combustion, in the case of an incinerator; and for reducing the size and duration of a moisture plume created by water vapor in the gases exiting such combustion process. The waste may be inside boxes, bags, or other containers, or may be in loose bulk form. The waste is dropped into a hopper. The hopper lid is of a design to offer safety from personal exposure to the waste and from any size reduction equipment, such as a shredder, and/or conveying machinery that might be at the bottom of the combustion chamber in the case of an incinerator. An air draft is hopper. The waste is allowed to fall onto a conveying mechanism which then delivers the waste for processing, such as to a maintained through the hopper, any size reduction equipment, the conveying machinery, and into a combustion process, if present, which enhances both the safety and operation of the system, and the completeness of combustion of the waste, in the case of an incinerator. The moisture plume resulting from the combustion is shaped and given a spin by a specially shaped exhaust section which allows the water vapor in the plume to disperse, and the plume to disappear more rapidly.
Abstract:
This abstract describes a process for the complete oxidation of municipal refuse and certain hazardous materials. The facility to accommodate the process consists of a completely enclosed, rotating, cylindrical kiln wherein solids, liquids, and gaseous compounds are simultaneously oxidized. To supplement the burning process, natural gas will be injected into the kiln chamber through a regulatory apparatus. Within the oxidation chamber, temperatures of 3200 degrees F., plus, will be maintained by injecting a regulated flow of pure oxygen, as an oxidant, to ensure the complete oxidation of all materials. After suitable preparation, solids and liquids will be introduced into the kiln chamber through an enclosed, sealed, apparatus i.e., screw conveyor, to control refuse volumes. During the oxidation process, the refuse materials will be kept in suspension for an adequate dwell time by the tilted orientation and rotating operation of the kiln apparatus. Any liquid residue will form a liquid bed at the low end of the chamber while the gaseous residue will rise to the high end. As a result, the liquid residue will continuously exit the chamber through an enclosed trap apparatus, while the gaseous residue will continuously exit the chamber through an enclosed duct system. After exiting the chamber, the liquid residue will be cooled and restructured into environmentally safe products. After exiting the chamber, the gaseous residue will be compressed, cooled, and fractionated into environmentally safe products.
Abstract:
An apparatus for removing viscous material from barrels includes a conventional drum dumper, an auger formed of a double helix of metal ribbon, a motor for rotating the auger, and a carriage assembly for supporting the motor and auger and advancing the auger into and out of an inverted barrel. As the auger is advanced into the open end of an inverted barrel, the motor rotates the auger to insert the double helix into the viscous material and urge the viscous material rearwardly out of the open barrel end. The carriage assembly includes a carriage which supports a central shaft of the auger and the auger motor, and four guide rails which constrain the movement of the carriage to rectilinear motion. The tolerances between the carriage assembly and rails are such that the auger can skew slightly relative to the direction of travel so that the auger can negotiate around a side bung formed on the barrel, and yet provide a relatively close tolerance between the outer periphery of the auger and the inner surface of the barrel. Also, the leading edge of the auger includes cross bars provided with adjustable and/or removable teeth for digging into the viscous material, and the shaft includes a steam supply system for projecting jets of steam and/or other fluids from the sides and ends of the auger to loosen the viscous material. Limits of forward and rearward travel of the frame are controlled by a programmable logic controller.
Abstract:
A garbage disposal system includes a garbage classifier unit, which consists of a cutting mechanism, a separation water trough, squeezers, and a blower separator, and is controlled to separate plastics and mineral from garbage; a garbage furnace controlled to burn garbage being delivered from the garbage classifier unit, a waste gas treatment unit controlled to treat exhaust gas from the garbage furnace, and a sewage treatment unit controlled to treat waste water from the garbage classifier unit and the waste gas treatment unit for a repeat use.
Abstract:
An incinerator (200)is provided for burning combustible refuse (16) in a primary combustion chamber (2) that has an outlet (50) for exhaust heat (30) and an inlet (28) for receiving refuse (16) and an inlet (36) for receiving a mixture of pressurized oxygen and pressurized hydrogen at respective rates correlated to create a burn temperature within chamber (2) of at least 4000.degree. F. to provide exhaust heat that is more environmentally acceptable.
Abstract:
A transportable processing unit for producing a pumpable, essentially homogeneous admixed material suitable for use as substitute fuel or for thermal destruction by incineration, the processing unit including a closed mixing vessel mounted on a movable base member the vessel adapted to receive feedstock material from an adjacent on site holding facility through at least one entry port and to receive intermediate process material through at least one inlet port and a process material exit port as well as a mixing device located in the vessel interior. The processing unit of the present invention also has a conduit for conveying process material away from said mixing vessel, which is connected to the mixing vessel exit port, and at least one particle sizing device mounted on the moveable base member which has an inlet in fluid communication with a second end of the process material conveying conduit and at least one diverter outlet which is in fluid communication with the intermediate process material inlet port of the mixing vessel. The moveable base is preferably a transportable member such as a tractor trailer or a transportation skid.
Abstract:
A pressurized combustion of slurries of low-cost, unbeneficiated solid fuels in the presence of steam and alkali in which sulfur oxide emissions are inherently low, emissions of nitrogen oxides controlled by the injection of a scavenging agent and emissions of particulates prevented by condensing steam on and around them. The combustion has applications to steam boilers, combined cycles and gas turbines, including steam injected (STIG) and intercooled steam injected (ISTIG) versions. Turbine blade and nozzle erosion and deposits are avoided by the effective wet separation of ash particles before reheating and expansion.
Abstract:
Apparatus and process for the complete breaking down and incineration of tires and other difficult-to-dispose-of-waste products in an energy-efficient manner. Small particles of the waste material are directed into a furnace of novel design. Within the furnace, the particles are incinerated and thereby converted to combustion gas products. The combustion gas products exiting from the furnace are then transferred to an energy recovery/utilization means, such as a boiler. The small particles are specifically directed into a coiled ignition tube located completely within the furnace. As the particles travel in a downwardly spiraling motion through the ignition tube they come in contact with its heat-conducting interior walls. By forcing the particles to contact the interior walls, the ignition tube of the present invention leads to an efficient incineration of those particles. Everything which exits the ignition tube at a lower section of the furnace, including any residual particles and any unoxidized gases, is drawn up past the hot ignition tube and out at upper section of the furnace. In this way, the effective dwell time at high temperatures ensures that the final particulate matter is consumed within the furnace. Additionally, the furnace may be contoured so that all gases and particles exiting the ignition tube are forced to contact the hot ignition tube's external walls.
Abstract:
Method and apparatus for treating waste materials to produce aggregates wherein pellets comprised of a mixture of solids, liquid wastes and clay are dried by hot air in a dryer. The pellets are then fed to the pyrolysis zone of a rotary kiln wherein they are heated by hot gas from an oxidation zone of the kiln to drive off most of the volatile gases. Remaining volatile gases and the fixed carbon in the waste are oxidized in the oxidation zone, and the silicates in the clay are vitrified in a vitrification zone of the kiln to produce aggregates which are crushed and screened. Volatile gases given off from the pyrolysis zone are mixed with exhaust gases from the dryer to feed the burner for the vitrification zone and to supply oxygen to the oxidation zone.
Abstract:
Method and apparatus for treating waste materials to produce aggregates wherein pellets comprised of a mixture of solids, liquid wastes and clay are dried by hot air in a dryer. The pellets are then fed to the pyrolysis zone of a rotary kiln wherein they are heated by hot gas from an oxidation zone of the kiln to drive off most of the volatile gases. Remaining volatile gases and the fixed carbon in the waste are oxidized in the oxidation zone, and the silicates in the clay are vitrified in a vitrification zone of the kiln to produce aggregates which are crushed and screened. Volatile gases given off from the pyrolysis zone are mixed with exhaust gases from the dryer to feed the burner for the vitrification zone and to supply oxygen to the oxidation zone.