A disposal system for the processing of solid waste devices to recycle materials located within the devices and recover, reuse and recycle such materials. Such system may include a primary chamber and secondary chamber, attached preferably by use of one or more exhaust ducts, and a secondary chamber exhaust duct. The solid waste devices may include any type of waste, such as electronics waste, medical device waste, and the like.

A multi-stage product gas generation system converts a carbonaceous material, such as municipal solid waste, into a product gas which may subsequently be converted into a liquid fuel or other material. One or more reactors containing bed material may be used to conduct reactions to effect the conversions. Unreacted inert feedstock contaminants present in the carbonaceous material may be separated from bed material using a portion of the product gas. A heat transfer medium collecting heat from a reaction in one stage may be applied as a reactant input in another, earlier stage.

The present invention provides an exhaust gas treatment method and an exhaust gas treatment device which prevent the generation of NO.sub.X, and treat a first exhaust gas and a second exhaust gas with a small amount of fuel, and the exhaust gas treatment method comprises a first combustion step which treats a first exhaust gas discharged from a carbonization furnace for carbonizing a fibrous substance in an inert atmosphere and a graphitization furnace for graphitizing a fibrous substance in an inert atmosphere and a second combustion step of treating a second exhaust gas discharged from a flameproofing furnace for flameproofing a fibrous substance in air atmosphere, wherein the first exhaust gas is combusted at an oxygen ratio of 0.8 or less in the first combustion step, and the second exhaust gas is combusted in the second combustion step using sensible heat and latent heat of a third exhaust gas discharged in the first combustion step.

A portable, yard waste incinerator system that includes a transport vehicle with a large burn tank configured for burning yard waste. Located inside the burn tank is a primary burner that forms an inner primary combustion chamber and an outer secondary chamber. Propane fuel is connected to an external propane gas source which delivers propane to the primary combustion chamber. The primary burner includes a plurality of holes that allows flames and hot gases from the fire and heat from the primary combustion chamber to extend into a secondary combustion chamber. The system also includes a vacuum system connected to the burn tank which picks up small, loose combustible debris from the yard and delivers the debris and oxygen to the secondary combustion chamber. The system also includes an optional electric generator that energizes the vacuum system and an optional shredder that delivers shredded yard waste to the secondary burning chamber.

One object of the present invention is to provide an exhaust gas treatment method for treating exhaust gases discharged from a carbon fiber manufacturing steps which can suppress a cost increase due to an increase in an amount of an exhaust gas treated, the present invention provides an exhaust gas treatment method including: a first combusting step in which a carbonizing step-exhaust gas discharged from a carbonizing step in which the fibrous substance is carbonized in an inert gas atmosphere is treated; and a second combusting step in which a flameproofing step-exhaust gas discharged from a flameproofing step in which the fibrous substance is flameproofed in an air atmosphere and a first combusting step-exhaust gas discharged from the first combustion step are treated; and an air separating step in which nitrogen for producing the inert gas atmosphere in the carbonizing step, and the oxygen-enriched air used in the first combusting step are produced by separating air.

Disclosed is a system and method for the combustion of biomass material employing a swirling fluidized bed combustion (SFBC) chamber, and preferably a second stage combustion carried out in a cyclone separator. In the combustion chamber, primary air is introduced from a bottom air box that fluidizes the bed material and fuel, and staged secondary air is introduced in the tangential direction and at varied vertical positions in the combustion chamber so as to cause the materials in the combustion chamber (i.e., the mixture of air and particles) to swirl. The secondary air injection can have a significant effect on the air-fuel particle flow in the combustion chamber, and more particularly strengthens the swirling flow, promotes axial recirculation, increases particle mass fluxes in the combustion chamber, and retains more fuel particles in the combustion chamber. This process increases the residence time of the particle flow. The turbulent flow of the fuel particles and air is well mixed and mostly burned in the combustion chamber, with any unburned waste and particles being directed to the cyclone separator, where such unburned waste and particles are burned completely, and flying ash is divided and collected in a container connected to the cyclone separator, while dioxin production is significantly minimized if not altogether eliminated. A Stirling engine along with cooling system and engine control box is integrated with the SFBC chamber to produce electricity from the waste combustion process. Residual heat in the flue gas may be captured after the combustion chamber and directed to a fuel feeder to first dry the biomass. System exhaust is directed to a twisted tube-based shell and tube heat exchanger (STHE) and may produce hot water for space heating.

Heat and power engineering, specifically being heating devices includes a pyrolysis boiler, in which, wood is subjected to high-temperature gasification and pyrolysis with subsequent burning off of pyrolysis gases. A stable and controllable gasification of wood with a natural high moisture content is achieved, and at the same time, a highly efficient transfer of combustion heat to a liquid heat-transfer agent is obtained. A gasification chamber is positioned between two compartments of a pyrolysis gas combustion chamber of the pyrolysis boiler, while the external wall of the combustion chamber is used as a heat-transfer surface, and at the same time, neither the fuel bunker nor the gasification chamber are in contact with water.

Provided is a plastic waste solid fuel incinerator comprising: an incinerator housing which has, on the upper portion thereof, a gas outlet through which combustion gas is discharged; a fuel supply unit which transfers and supplies a plastic waste solid fuel; a first combustion unit which continuously transfers and burns the supplied plastic waste solid fuel; a first air supply unit which supplies air needed for combustion to the first combustion unit; a combustion gas induction unit which induces the combustion gas generated from the first combustion unit toward the lower portion of a first combustion chamber; a second combustion unit which is arranged in the lower portion of the first combustion unit and comprises a downward injection nozzle unit which downwardly injects the combustion gas supplied through the combustion gas induction unit in order to reburn the combustion gas; and a second air supply unit which is arranged in the lower portion of the second combustion unit and supplies the air needed for combustion to the second combustion unit by downwardly injecting the air. Accordingly, there is an advantage of allowing continuous combustion using combustion gas generated during the combustion of the plastic waste solid fuel without using a separate auxiliary fuel, thereby reducing incineration costs.

The invention relates to a staggered firing for combustion of wet charge materials, consisting of the following steps: pre-combustion designed as a fluidized bed firing, heat transition in a heat exchanger, dust precipitation, and post-combustion. The staggered firing is characterized in that during the heat transition in the heat exchanger, exhaust gases from the pre-combustion are cooled and combustion air for pre-combustion is heated and then supplied to the pre-combustion.

A pyrolysis waste-to-energy conversion system has a muffle furnace housing a rotating retort drum within the furnace and having an inlet sleeve and an outlet sleeve extending through inlet and outlet ends of the muffle furnace. A rotating retort drum drive applies rotary drive to the inlet rotating retort drum sleeves and an in-feed auger is within a tube within the inlet sleeve. An out-feed auger is within a tube within the outlet sleeve and arranged to deliver char and pyrolysis syngas to a char processing system and a syngas processing system. The inlet sleeve and said outlet sleeve are arranged to provide a gas seal to prevent air ingress or syngas egress to and from the rotating retort drum. A gas cleaning system has a cracking tower arranged to retain inlet gas at an elevated temperature for a residence time, and a gas quench and scrubber system.