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Show INTRODUCTION Radian Corporation is under contract to the Gas Research Institute (GRI) to develop an advanced burner for co-firing hazardous wastes with natural gas in industrial boilers. The program is divided into four phases. In Phase I, the need for an advanced burner was assessed, and a set of performance goals was established. In Phase IT, a prototype burner was developed and tested. Phase ill will consist of an optimization of the burner design, and a series of commercial demonstration tests. In Phase IV, the burner will be commercialized. Background Destruction of hazardous wastes in boilers is economically attractive when compared to incineration. Incineration of a waste stream often requires supplemental use of purchased fossil fuels, and gen~rally does not recover the energy contained in the waste and fuels to provide usable energy product. In contrast, burning of waste in boilers or furnaces results in a reduction in purchased fossil fuel demand, and the energy contained in the waste is converted into a usable form. Many owners and operators of industrial boilers wishing to co-fire hazardous wastes will not be able to meet the new boiler and industrial furnace (BJF) regulations without substantially modifying their boiler design and operation. For the most part, the higher destruction removal efficiency (ORE) of 99.99 percent required under these regulations can not be achieved directly in an industrial boiler or furnace with existing burner technology. Consequently, installation of a pre-combustion chamber or similar device is needed to attain the temperatures, turbulence, and residence time needed to destroy 99.99 percent of the hazardous constituents. Another problem created by achieving the DRE levels is a significant increase in emissions of nitrogen oxides (NOJ. The increases in boiler furnace temperature and oxygen content necessary to meet the higher DRE levels are likely to result in higher NOx emissions, 2 |
