Abstract:
The object of this invention is to provide a reformed gas combustion incinerator almost completely burning up waste products, industrial wastes and combustible rubbish while being almost free from the generation of smoke or odor. This incinerator (1) comprises primary and secondary combustion chamber units (10) and (20). The primary unit (10) consists of a lower external casing (3), and a cylindrical combustion tub (6) installed with the casing (3). An annular reformed water supply pipe (5) is installed at the upper portion of the tub (6). The secondary unit (20), positioned on the primary unit (10), consists of an air supply tub (14), and an auxiliary combustion tub (15) installed within the air supply tub (14). An upper external casing (30) is positioned on the secondary unit (20), and has a dust collection tub (24) therein, with a dust collection means (23) set within the dust collection tub (24).
Abstract:
The invention relates to a method for thermally disposing of fractions having a high calorific value and contained in refuse and/or residual materials in fossil-fired power plants, especially in coal-fired power stations with wet flue gas desulfurization. The inventive method is characterized in that the refuse/residual materials (2) is/are prepared and treated and is/are then compacted to form known pellets/briquettes or is/are subjected to a thermal treatment (homogenization) in order to form a coke-like material (15) and high-energy gas (7). In addition, the refuse/residual materials is/are optionally mixed with additives in a controlled manner according to required gas and coke analyses as well as to required quantities of gas and coal. The refuse/residual materials is/are directly fed into the coal stream in the discharging hopper and/or a coal belt, and/or in a steam generator hopper and/or a coal distributor in front of or in the area of a coal fall shaft and/or of a flue gas recirculation device. The refuse/residual materials is/are fed in a maximum proportion of 5 % with regard to the quantity of coal located in the coal distributor as from preferably 60 % of the firing capacity of the boiler, is/are fed together to a coal mill and is/are burned in the steam generator, whereby the high-energy gas (7) generated during the thermal treatment is fed by direct route to the steam generator (14) in a partial or complete manner, and is burned while partially or completely disposing of a separate purification (10).
Abstract:
A waste incineration method and a device therefor that incinerate waste, such as urban refuse, by using a grate incineration furnace, fluidized bed incineration furnace or the like while suppressing the concentration of dioxins, characterized, in that it is found that the S component or nitrides contained in sludge is effective in suppressing formation of dioxins, and waste, sludge, solid fuel, plastics and the like are mix-burned in a waste incineration system; in addition, the temperature of combustion exhaust gases and the SOx concentration after mix-burning are controlled, thereby reducing generation of dioxins.
Abstract:
According to the method described, the reaction gases are filtered, rinsed and/or cooled and then at least part of these gases is heated or cooled, and/or enriched with air, oxygen or fuel, depending on the thermal and/or chemical conditions in the reaction process once more. The remaining part of the gaseous reaction products is diverted from the circuit, analysed and, depending on the result of the analysis, afterburned, before being released into the atmosphere after rising and cooling. The average temperature of the filling agent is regulated by heating and/or cooling the gaseous reaction products which are re-introduced into the reaction chamber. The inventive method is particularly suitable for small but efficient waste disposal installations.
Abstract:
An improved incineration system comprising an incinerator (2) defining a combustion chamber (3) to contain a mass of waste material (4). Air for combustion of the waste material (4) is supplied to the combustion chamber (3) through a plurality of parallel air tubes (18) at a location beneath the waste material (4). A portion of the hot gases of combustion is withdrawn from the upper end of the combustion chamber (3) by a blower (31) and returned to the lower end of the combustion chamber (3) through a plurality of gas tubes (34) at a level beneath the air tubes (18). Combustible hydrocarbons in the combustion gases are combusted within the mass of waste material (4), resulting in more efficient and complete combustion. The combustion gases discharged from the combustion chamber (3) are passed through a scrubber housing (36) through which the gases flow in a non-linear, tortuous path between a plurality of baffles or columns (38) of refractory material. Particulate material in the combustion gases collects on the baffles (38)and subsequently flakes off from the baffles (38) and falls to a collection site or hopper (44).
Abstract:
The invention concerns a method for cremating human or animal bodies which consists in generating from a wall (10) of the combustion chamber (3), a turbulence in the form of a vertical displacement above the body (2) and in injecting the air required for combustion into this turbulence. Preferably, the turbulence is generated by rotating means (11) directed inside the chamber (3) and equipped with an inlet air duct (17), provided with a closing valve (18) and the air injection is adjusted by actuating the valve.
Abstract:
A recycling system processes used oil filters on a continuous basis by shredding (8) the oil filters and then incinerating the shreds in a rotary kiln (20). The shreds are fed into the upper end of an inclined rotating drum kiln (20). The shreds of combustible material and any oil are burnt to produce exhaust gases and ash particles. The remaining metal shreds are discharged at the lower end of the rotating drum (20) through a first port (22). The exhaust gases and ash particles flow from the kiln (20) through a first cyclone (38) which separates out any heavy unburnable pieces. The remaining exhaust gases and ash particles then pass through an afterburner (12) to further ensure complete combustion and minimize air pollution. A second cyclone (14) separates the ash particles from the exhaust gases. An exhauster (13) can be used to induce the flow of exhaust gases and ash particles from the kiln (20) through the afterburner (12) and cyclones (38, 14). This system automatically separates metal shreds and incinerates the combustible materials and oil in the oil filters. Ash particles are also automatically separated by the second cyclone (14) and discharged through a separate port (15).
Abstract:
A plant (1) for burning waste comprises a rotary furnace (2), an after-burning chamber (3) connected to the furnace (2), a primary incineration part (4) comprising the furnace (2) and a first part (5) of the after-burning chamber (3) for initial incineration of the waste in an oxygen deficient environment at a lower temperature interval in the furnace (2) and in the first part (5) of the after-burning chamber (3) for producing combustible fumes therein, a secondary incineration part (6) comprising a second part (7) of the after-burning chamber (3) and a contracted passage (8) between the first and second parts (5, 7) of the after-burning chamber (3) for subjecting the fumes to an increase in velocity between the first part (5) and the second part (7) of the after-burning chamber (3). The passage (8) comprises an inlet (9) for forced injection of combustion air into the contracted passage (8) for conclusive combustion of the combustible fumes at a higher temperature interval in the passage (8) and in the second part (7) of the after-burning chamber (3). The contracted passage (8) comprises a narrowing part (10) followed downstream by a widening part (11) having a cross sectional area larger than the cross sectional area of the narrowing part (10) immediately upstream of the widening part (11).
Abstract:
Un brûleur combustibles gazeux, fluides ou pulvérulents, dans lequel on introduit trois composantes : un combustible (40); un gaz comburant (10), par exemple de l'air et; un gaz inerte (20) par exemple des gaz issus de la combustion, de l'azote, ou de la vapeur d'eau. Deux composantes, par exemple l'air et le gaz inerte, sont mélangées entre elles (30) et propulsés par un ou plusieurs étages d'injection (95) disposés à des positions différentes relativement au mouvement du combustible.