Abstract: A thermal desorption system for remediating contaminated material in a zero oxygen environment by heating a gas and flowing the heated gas through a core heating conduit traversing the interior of a material compartment of a bin filled with contaminated material, redirecting the flow of heated gas from the core heating conduit to a space between the exterior of the bin and the interior of a bin housing insulator encapsulating the bin to provide dual indirect heating to the contaminated material within the bin, directing off gases of contaminated vapors released by desorption from the material to an exhaust header through a plurality of vapor outlets, and condensing the offgas in the exhaust header.

Abstract: A combined cycle power generation and chemical recovery system has a gasifier system for producing a fuel gas from a by-product of an industrial process, such as a black liquor from a paper mill and a diesel, or dual-fuel, engine/generator connected to the gasifier system to receive the fuel gas for combusting to produce electrical power. Exhaust gases from the diesel engine/generator may be used for steam generation in a boiler.

Abstract: A smokeless mobile agricultural field burner for burning agricultural waste products, mainly rice straw, in the field without releasing excessive air pollution into the environment. The burner consists of a main structure, either self-propelled or towed, that serves as a burn chamber. The sides, top and rear of the main structure are enclosed, while the front and bottom are open, allowing fire to come into contact with the ground to provide sterilization benefits to the soil thereby helping to control soil contamination. Destruction of the waste products is facilitated by a series of primary burners in the burn chamber. Smoke, debris and ash resulting from the primary burn are channeled through the interior of the burner into exhaust ducts by air currents generated by a blower mounted on the outside of the main structure. Once in the exhaust ducts the smoke and debris is destroyed by a set of afterburners, then allowed to escape to an exhaust chamber.

Abstract: A stand supports a blast pipe generally upright with its open bottom end engaging against a stump. Fuel is inserted into the pipe and ignited. A blower injects air into the pipe to intensify the combustion of the fuel and promote burning of the stump adjacent to the bottom end of the pipe. The pipe is advanced into the stump as the stump is burned.

Abstract: An in situ system for thermally cleansing hazardous and toxic waste disposal sites is disclosed. The system includes a perimeter wall extending into the site which is sealed to a roof structure surrounding the site to encapsulate the site. A plurality of tubes are sunk into the encapsulated site in a geometric pattern and are directly heated to indirectly heat the site. In time, the temperature of the entire site is raised to a level where the waste is volatilized and the volatiles are collected in the roof and subsequently incinerated.

Abstract: Waste materials are deposited in a subsurface cavity, either underground or underwater. The wastes are supplied with liquid oxygen in an amount in excess of the estimated theoretical amount of oxygen needed to oxidize all components of the waste. An ignition source is provided. During incineration, the organic components are completely destroyed, water and carbon dioxide being the major combustion products. At the temperatures that develop, substantially all of the metal is converted to metallic oxides, which either remain in an underground cavity or sink harmlessly to the bottom of a body of water.