Abstract:
A fluid bed disposal method and apparatus are disclosed including a secondary bed/elutriation arrestor obstruction of labyrinth construction in the fluid bed reactor having lower and upper vertically spaced-apart perforate retention plates between which are positioned at least first and second vertically spacedapart grates with the grate bars of the grates staggered with respect to one another. The lower surface of the bars of the lower perforate plate is disclosed as stepped between at least two horizontal surface locations. At least two fluid bed/elutriation arrestor labyrinth obstructions spaced apart above the bed of granular material are disclosed.
Abstract:
A quantity of finely divided inert particles is fluidized by a high velocity stream of cold air directed against the particles from the bottom while waste material is fed into the fluidized particles from the top. The particles are initially pre-heated to a temperature sufficient to cause combustion of the waste material by passing a low velocity stream of hot air through the volume of particles from its top to its bottom.
Abstract:
A material combustion method and apparatus is disclosed wherein material to be combusted is directed into a fluid bed reactor, compressed air directed through the fluid bed and entrained particles removed from combustion gases evolved during combustion.
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:
A feed stream, which is to be dried, is introduced into a fluidized bed of solid particles. A plurality of conduits are immersed in the bed for channeling a heating fluid through the bed to supply heat for vaporizing volatiles contained in the feed stream. Solid particulates and volatiles produced within the hot bed are removed from the bed. Volatiles are separated from the solid particulates entrained therein whereupon dried feed solids are recovered. The separated volatiles are preferably split into a first and a second portion. The first portion is recycled to the bed to serve as the fluidizing gas. The second portion is compressed to a pressure at which its saturation temperature exceeds the boiling temperature of the feed stream at the conditions existing in the bed. The compressed second portion is then cooled to about its saturation temperature whereupon it is re-cycled through the bed heating conduits to serve as the heating fluid. The re-cycled compressed volatiles condense as they pass through these conduits to supply heat for vaporizing the volatiles contained in the feed stream.
Abstract:
An air-pollution-free internal combustion engine and method for operating such engine in which the engine has at least one cylinder, an exhaust port and exhaust valve, fuel, oxygen gas and water spray injectors and a piston in the cylinder, throttle valves for the injectors, a fuel storage and supply system for feeding hydrogen gas or liquid gasoline to the fuel injector, an oxygen storage and supply system for feeding oxygen at first and second pressures to the oxygen gas injector and a water recovery system for recovering water from the exhaust discharged from the cylinder and for feeding the recovered water to the water spray injector.
Abstract:
An air pollution-free internal combustion engine and method for operating such engine are provided in which the engine has at least one cylinder, an exhaust port and exhaust valve, fuel, oxygen gas and water spray injectors, a piston in the cylinder, means for cyclically opening and closing the exhaust valve, a fuel storage and supply system for feeding hydrogen gas or a liquid hydrocarbon to the fuel injector, an oxygen storage and supply system for feeding substantially pure oxygen to the oxygen gas injector, means for igniting the injected mixture of fuel and oxygen, and a water recovery system for recovering water from the exhaust discharged from the cylinder and for recycling the recovered water to the water spray injector. In a typical engine cycle, the exhaust valve is closed prior to completion of the exhaust stroke to entrain some exhaust gas in the cylinder as a working fluid. Oxygen is then injected into the cylinder after the exhaust valve closes and before the piston reaches top dead center on the exhaust stroke, and while relatively low pressures exist in the cylinder. Fuel is next progressively injected under pressure into the oxygen contained in the cylinder so that that fuel burns progressively as it is injected to preclude knocking problems. After combustion is substantially completed, the exhaust valve opens just before the piston reaches bottom dead center on the power stroke whereupon water is injected into the cylinder to cool the cylinder walls, piston, dome, combustion chamber wall and exhaust gas. A portion of the exhaust gas is then discharged from the cylinder through the exhaust port on the exhaust stroke.
Abstract:
Method and apparatus are disclosed for feeding solid waste to a fluid bed disposal apparatus wherein solid waste is separated by air classification into a heavy low fuel valve fraction which is segregated from the fluid bed apparatus and a lighter particle fraction which is conveyed to an inertial separator stage via a conveying gas stream. In the inertial separation stage the lighter fraction solid waste is separated from the conveying stream and delivered to a storage area from which it is drawn and introduced via an air-lock feed valve to a fluid conduit and into the fluid bed chamber.