Abstract:
Proposed are a system and method for wasteless pyrolytic processing and complete utilization of municipal and domestic wastes. The wastes are sequentially passed through units of sorting, grinding, drying, accumulating, and sending to a pyrolysis reactor for pyrolytic treatment. The syngas produced in the pyrolysis is passed through dry cleaning, dust catching, a first wet cleaning with water, a second wet cleaning with alkali, and a floatation unit for separation of water which is purified to an extent sufficient for technical use. The purified syngas is also passed through an absorber and is then used as a working medium for a power generation unit such as a gas turbine co-generator that generates electricity. Solid products of the pyrolysis reaction, such as coke, are returned to the reactor for afterburning, and the heat of the reaction can be utilized in a dryer, or the like.
Abstract:
A small scale integrated waste processing system for the thermal destructions of waste. The system comprises a compactor (12) for densifying waste and expressing air, a pyrolyzer (13) to receive waste delivered from the compactor, a gasifier (14) with an ash vessel (23) that receives dried waste, and an oxidizer (15) receiving gas from the gasifier to be combusted. Heat energy from the oxidizer can be routed back to the pyrolyzer.
Abstract:
Disclosed are a method and an installation for generating effective energy by gasifying waste. In the method and installation, waste such as garbage is introduced into a shaft-type melting gasifier, is dried in a reverse flow, is degassed, and is gasified while the solid residue is melted. The hot crude gases that are withdrawn from the melting gasifier (15) are fed to a hot gas steam generator (18) in which steam is admixed to the hot gas and the hot gas-steam mixture is conducted across the double turbine rotor (18.13) of a turbine (18.3) that drives a power generator (18.4), a preliminary reaction taking place at the same time. The pre-purified hot gas-steam mixture is then introduced into a downflow device (38) in which the mixture is cooled and pre-purified using sprayed water mixed with reactant and by repeatedly expanding, compressing, and foaming the mixture, the pre-purified gas being withdrawn and the liquid being collected. The pre-purified gas is fed to a gas purification process (40) in which the pre-purified gas is foamed with reactant and is defoamed again. The purified gases are finally further utilized for generating power, e.g. by being burned in an engine (41).
Abstract:
Proposed are a system and method for wasteless pyrolytic processing and complete utilization of municipal and domestic wastes. The wastes are sequentially passed through units of sorting, grinding, drying, accumulating, and sending to a pyrolysis reactor for pyrolytic treatment. The syngas produced in the pyrolysis is passed through dry cleaning, dust catching, a first wet cleaning with water, a second wet cleaning with alkali, and a floatation unit for separation of water which is purified to an extent sufficient for technical use. The purified syngas is also passed through an absorber and is then used as a working medium for a power generation unit such as a gas turbine co-generator that generates electricity. Solid products of the pyrolysis reaction, such as coke, are returned to the reactor for afterburning, and the heat of the reaction can be utilized in a dryer, or the like.
Abstract:
A pre-sorter forwards items from solid waste to designated processing paths in response to their size. Large items are manually processed to remove non-recyclables, to fuel a generator, to be returned to the pre-sorter after removal from a container, or forwarded to processing streams. The smallest items are forwarded to a first chain of machines that remove metal and glass from the items. Intermediate sized items are forwarded to an assembly that separates small, relatively dense, items from larger lightweight items. The former items are mixed and processed by a first chain of machines. The latter items are forwarded to a second chain of machines that separate and remove paper and other containers from recyclable metal and plastic. Multiple paper types are identified and removed by a third chain of machines. A remediator receives residual items from each of the first, second and third chains of machines.
Abstract:
Solid combustible waste materials are converted into highly efficient fuel by subjecting such materials to size reduction in suitable size-reducing equipment. The last piece of the equipment is a mill which pulverizes the waste materials into fine particles having a high surface to mass ratio and forming a highly efficient fuel when these particles are directly injected into a combustion reactor operating at high temperature.
Abstract:
In a waste wire harness including electric wires each coated with a resin comprised of an olefin-based resin and magnesium hydroxide as a fire retardant, and including accompanied members having at least one of terminals, connectors, various kind of boxes such as junction boxes and fuse boxes, tapes, tubes, grommets, wiring clips, and protectors, a method for recycling the waste wire harness includes a step of removing the accompanied members from the waste wire harness, a step of crushing the waste wire harness after removing the accompanied members to obtain crushed particles, a step of incinerating the crushed particles to produce incinerated ash, a step of converting a magnesium compound contained in the incinerated ash into magnesium hydroxide, and a step of collecting the magnesium hydroxide.
Abstract:
A slow speed, high torque shear technology is disclosed having optional configurations and attachments for its construction and methods for reconfiguring existing shears to improve performance, and maintenance economics. A method is provided for the readily replacement of individual cutters and tooth modules, reconfiguration of cutter and tooth assemblies in a mix and match manner, in combination with matching anvils having replacement cutting elements with multiple cutting faces. Alternative embodiments are provided illustrating methods of configuration of various types of cutting elements and material feed systems. Methods for converting a rough cut shear to a fine particle shear and then to a granulator as well as a method for rejecting unprocessable material is also disclosed.
Abstract:
A facility for reclaiming useful products from solid municipal and hazardous waste uses a rotary kiln to convert the material into a stream of inorganic ash and a stream of gaseous combustion products. The stream of combustion products passes in heat exchange relation to unburned waste and produces a stream of volatile carbon compounds which are deficient in oxygen. The streams of combustion products and volatile carbon compounds are converted in a plasma arc generator into a stream of hot, disassociated atoms. The stream of hot gas is cooled by passage through one or more heat exchangers that reclaim process heat. The stable compounds that are produced are hydrogen and carbon monoxide. The process is controlled by monitoring carbon dioxide in the carbon monoxide stream. The carbon monoxide and hydrogen may be used separately or combined, as in a methanol synthesis plant.
Abstract:
An in-line grinder has been developed which can be configured to perform in a variety of applications through the use of an adjustable rotor/stator assembly, removable shear bar, and a variety of interchangeable stator-rotor configurations. A unique drive system utilizing a mechanical seal cartridge provides maximum sealing with a minimum of shaft deflection and run-out thereby improving performance. These improvements collectively allow the grinder to be configured for optimum sizing of solids to a predetermined particle size for a broad range of materials. It has been demonstrated that a class of in-line grinders such as that described herein is applicable for sizing drill cuttings for injection into a subsurface formation by way of an annular space formed in a wellbore. The cuttings are removed from the drilling fluid, conveyed to a shearing and grinding system that converts the cuttings into a viscous slurry with the addition of water and viscosity enhancing polymers. The system in its simplest form comprises a slurry tank, a pump, and the instant in-line grinder. The pump circulates the mixture of cuttings and water (sea water) between the slurry tank and the in-line grinder. The ground mixture leaving the in-line grinder is then routed to an injection pump for high pressure injection into the formation.