Abstract:
A tunnel type incinerator with cylindrical inner and outer barrels which are rotated in opposite directions relative to each other. A large number of crushing blades or protrusions are disposed and engaged with each other in a spiral shape on the wall of the barrels, a hopper is disposed on a side of a hold member which is joined with the inner and outer barrels and a bucket is disposed on a lower opposite side of the hold member. Charged waste from the hopper is crushed on the crushing blades and moved to the front end portion of the barrel by a screw ribbon and burned up by the indirect heating of a combustion tube with burners, and a non combustioned gas tube is mounted over the hold member, such that the non combustioned gas produced in the inner and outer barrels is recycled to burn up the non combustioned gas. The combustion tube is mounted on inside walls of the inner and outer barrels in a zigzagged shape, thus the disintegrated and burnt waste are moved to a discharge opening and a discharge piece through an opening of the front end portion of the inner barrel, and moved to a re-charge inlet by a screw blender of a bucket installed on the hold member.
Abstract:
Disclosed is a method and system for recovering energy from low-grade fuels such as industrial, municipal and agricultural waste, low-grade carbonaceous fuels such as lignite and similar solid fuels in which the fuel is comminuted into small particles and slurried in water. The alkali content of the slurry is adjusted to be at least about equal to the chemical equivalent of the halogen content of the slurry and, following pressurization of the slurry, it is heated sufficiently so that the substantial portion of chemically bound oxygen in the fuel separates therefrom as carbon dioxide, leaving a slurry including char particles and dissolved impurities such as halogen salts. The char particles are removed from the slurry and reslurried with just enough halogen-free water to provide the slurry with the needed viscosity to maximize the energy density thereof. The char particles are then reacted with air at a temperature below their ignition value to convert the fuel value of the low-grade fuel into thermal energy which is then further used, for example, to drive a turbine.
Abstract:
An entirely dry, solid waste disposal system is provided which incinerates waste in a manner to minimize pollution and to utilize the heat energy which is a by-product of the incineration. The waste material is shredded and then dried by mixing it with heated ambient air in an elongated dryer. A helix propels the waste through the dryer and into a combustion chamber together with the hot ambient air which was employed to dry the waste material. The hot gases resulting from incinerating the wastes are directed to a boiler wherein steam is generated. The steam thus produced is used to generate electricity and additionally may be utilized as a source of heat for heating or drying. The hot gases from the combustion chamber and the boiler are fed to the dryer for waste drying purposes. Exhaust gases from the dryer are fed to a scrubber to remove any remaining pollutants prior to being exhausted into the atmosphere.
Abstract:
The preferred embodiment of the invention disclosed herein includes apparatus for and the steps of separating glass, metal and other generally non-combustible material from refuse to provide a volume of generally combustible refuse, shreddingthe volume of combustible refuse into relatively small particles and mixing the particles with primary combustion air, which is used to convey the particles to a combustion chamber. Auxiliary burners are used to heat the combustion chamber to a predetermined temperature above which the particles are self-igniting and use of the burners is thereafter discontinued unless the temperature falls below the predetermined temperature. The particles are separated as they are injected into the combustion chamber with a cyclonic motion. In the combustion chamber the mixture is ignited and converted to combustion gases which flow through the chamber. The flow of secondary air is regulated to provide maximum combustion temperature for the particles and negative pressure is maintained in the chamber to control the flow rate of the gases and to assure that the gases are generally completely combusted. The combusted gases are exhausted to an associated device such as a steam boiler or other device using the heat energy and thereafter are exhausted to the atmosphere.
Abstract:
Method and apparatus are disclosed for separating fluid bed granular particles and flyash which are entrained in the exhaust gases of a fluid bed reactor for return of the granular material to the fluid bed. The separation is accomplished in at least a two-stage inertial separation method and apparatus wherein the granular particles are separated in the first stage and flyash is separated from the exhaust gases in the second stage. Flyash separated from the exhaust gas with the granular particles can be separated from the granular particles and directed to residue storage. Heat exchange is disclosed between the exhausting combustion gases in the inertial separators and air being directed to the fluid bed for fluidization.
Abstract:
Method and apparatus are disclosed for liquid waste disposal using combustible waste material as a fuel in a fluid bed reactor. One combustion ingredient can be solid waste and one liquid waste ingredient can be sewage sludge. Control of the liquid feed is disclosed to control fluid bed temperature and control of combustible material feed is disclosed to control oxygen-to-combustibles ratio in the combustion chamber. A secondary bed/elutriation arrester may be provided above the principal fluid bed. Particle separators for the combustion gases are provided and air pollution suppressants are added to the bed as required.
Abstract:
Combustible waste material is collected and processed after which it is disposed of by incineration, the energy derived from combustion being utilized to produce electrical energy. Included in the processing of the waste material are the steps of shredding the waste material, feeding the shredded material through a high density press to separate the dry matter from the liquids, heating the shredded material to drive off additional moisture and gases, fluidizing and feeding the dried shredded material into the incinerator.
Abstract:
A solid waste disposal system is described with a storage and receiving carousel, a shredder, a dryer, a compressor-turbine assembly for compressing air for combustion of waste and for receiving hot gasses produced in the combustion process. Two combustion systems, a fluid bed reactor and a gasifying pyrolyzer, are described. Particulate matter harmful to the turbine and also causing air pollution is removed from the hot high pressure gas upstream of the turbine. The malodorous air from the waste storage, shredding and drying is compressed and used for combustion and the part of the hot exhaust gases from the turbine are used in the dryer.
Abstract:
A system for generating electrical power, including a frame defining a vertical axis and a horizontal axis, and having a support base generally extending along the longitudinal axis. The support base has an input end and an output end. At least a first shear station includes a first shearing blade adapted to reciprocate in a vertical direction between a first displaced position displaced from the support base and a second approximated position proximate the support base to shear the tree waste supported by the support base. An index blade is adapted for at least general horizontal movement along the support base. The index blade is dimensioned and adapted to direct the sheared tree waste toward the output end of the support base. A pulverizing station receives the sheared tree waste directed through the output end of the support base. The pulverizing station includes a pulverizing member actuable to pulverize the sheared tree waste. A furnace receives and converts the pulverized tree waste into steam energy. A steam generator turbine converts the steam energy into electricity.
Abstract:
A municipal or like refuse is crushing, separating ferrous metals, mixing with crushed limestone, drying up and loading in furnace of pyrolysis. An electronic and electric scrap is crushing, drying up from surface water and warming on 2-4° C. above temperature of transporting air, divide into concoction nonferrous and precious metals and dielectric fraction, which go in furnace of pyrolysis by specified air, cleaned from dust and moistened up to 100% moisture by water. At mixing with dielectric fraction temperature of the air increases, relative moisture falls down to level, excluding condensation of moisture and spark formation in system. Pyrolysis is carried out under simultaneous neutralization fo allocated hydrogen chloride by limestone with reception of calcium chloride. Gas allocated at pyrolysis condensing and dividing to water and organic phases (liquid fuel). Solid products of pyrolysis together with ash and slag supplied from heaps of waste generated by a heat power station, washing by specified water phase for dissolving of calcium chloride and extracting ions of heavy metals, then centrifuging. Filtrate and washing water cleanse from heavy metals. Solid products of pyrolysis move for incineration in combustion chamber. Combustion chamber slag, cleanse from heavy metals and not burned-out fuel in slag of heat power station, cool by air, which is then used in combustion chamber. Slag concrete products expose by the thermohumid processing by part of humid chimney gases after drying the calcium chloride, the other part gas is going to production of the carbonic acid.