Abstract: A furnace exhaust remediation unit comprises an auxiliary combustion chamber with a gas burner assembly optimized for efficient and substantially complete combustion of pollutants, for example, waxy hydrocarbons emitted as binder/lubricant substances are driven off in sintering of green powdered-metal parts. The rate of flow of air and exhaust through the combustion chamber are controlled, permitting control of the average residence time of the emissions, ensuring substantially complete combustion. The burner is arranged such that it provides a high-energy exhaust stream directed tangentially into the combustion chamber, so that a spiral motion is provided to the combustible pollutants, improving mixing and heat transfer and thus ensuring efficient combustion of the vaporized hydrocarbon emissions. The system has a universal modular construction where a burn chamber module; a burn chamber extension module and slide gate damper assembly module are provided.

Abstract: A furnace exhaust remediation unit comprises an auxiliary combustion chamber with a gas burner assembly optimized for efficient and substantially complete combustion of pollutants, for example, waxy hydrocarbons emitted as binder/lubricant substances are driven off in sintering of green powdered-metal parts. The rate of flow of air and exhaust through the combustion chamber are controlled, permitting control of the average residence time of the emissions, ensuring substantially complete combustion. The burner is arranged such that it provides a high-energy exhaust stream directed tangentially into the combustion chamber, so that a spiral motion is provided to the combustible pollutants, improving mixing and heat transfer and thus ensuring efficient combustion of the vaporized hydrocarbon emissions. The system has a universal modular construction where a burn chamber module; a burn chamber extension module and slide gate damper assembly module are provided.

Abstract: A furnace exhaust remediation unit comprises an auxiliary combustion chamber with a gas burner assembly optimized for efficient and substantially complete combustion of pollutants, for example, waxy hydrocarbons emitted as binder/lubricant substances are driven off in sintering of green powdered-metal parts. The rate of flow of air and exhaust through the combustion chamber are controlled, permitting control of the average residence time of the emissions, ensuring substantially complete combustion. The burner is arranged such that it provides a high-energy exhaust stream directed tangentially into the combustion chamber, so that a spiral motion is provided to the combustible pollutants, improving mixing and heat transfer and thus ensuring efficient combustion of the vaporized hydrocarbon emissions.

Abstract: It has been found that the adhesion of aramid tire cord to rubber tire stock can be improved by pretreating the tire cord with a polyazidoformate under conditions calculated to only partially decompose the azidoformate groups.