Award Data

A new and innovative application of signal generation based on a branch of mathematics becoming fairly known over the last ten years is proposed for the study of effects on electronic systems. A first time arbitrary generation of these complezmathematical signals will be imposed on electronic systems to test their impact. Results of these waveforms effects will be analyzed for existence and effe ...

Natural gas, which is predominantly methane, is widely used by industry as a chemical feedstock and as a fuel for power generation. The increasing price and diminishing domestic supply of natural gas creates an incentive to develop a low-cost replacement for the fuel. Coal gasification is one approach to provide the alternative fuel. However, the dominant commercially available coal gasifiers are ...

Coal gasification plants have exhibited sub-par performance and plant economics due to poor reliability and availability. A major contributor to the poor performance has been fouling of the syngas cooler located downstream of the gasifier. The fouling is due to vaporized ash from the coal gasification process depositing on the inner walls of the tubes in the fire tube heat exchanger used in the sy ...

SELECTIVE NO REDUCTION TECHNIQUES INVOLVING THE INJECTION OFNITROGEN-CONTAINING COMPOUNDS, SUCH AS AMMONIA, TO COMBUSTION PRODUCTS OVER A RELATIVELY NARROW TEMPERATURE RANGE HAVE BEEN USED FOR SOME TIME. SYSTEMS HAVE BEEN INSTALLED ON GAS-, OIL-, AND COAL-FIRED BOILERS, ON PROCESS HEATERS, AND ON MUNICIPAL WASTE INCINERATORS. HOWEVER, THESE SYSTEMS ARE LIMITED IN THEIR CONTROL EFFECTIVENESS. THERM ...

THE UNITED STATES HAS A LARGE BACKLOG OF WASTE TIRES AND RAILROAD TIES, GROWING AT A RATE OF APPROXIMATELY 240 MILLION TIRES/YEAR AND 14 MILLION RAILROAD TIES/YEAR. THESE WASTE FUELS EXPRESENT A SIZABLE RESOURCE. CURRENTLY OVER 80% ARE LANDFILLED, CONSTITUTING LOSS OF A SIGNIFICANT RESOURCE AND CREATING A MAJOR ENVIRONMENTAL PROBLEM. THE OBJECTIVES OF THIS PROJECT ARE TO IDENTIFY BARRIERS TO THE S ...

RECENTLY, THERE HAS BEEN INCREASED ENVIRONMENTAL CONCERN ABOUT THE EMISSIONS OF MERCURY FROM COMBUSTION SOURCES IN THE FORM OF METAL FUMES OR SUBMICRON PARTICLES. NATURALLY OCCURRING MERCUTY IN A FUEL VAPORIZES DURING COMBUSTION AND THEN CONDENSES AS THE COMBUSTION GASES COOL, LEADING TO INTERESTING CHALLENGES IN THE DESIGN AND OPERATION OF EQUIPMENT TO CLEAN THE FLUE GASES PRIOR TO STACK RELEASE ...

40908 November 18, 1996 Reaction Engineering International This project will develop a computational tool for detailed simulations of two-phase, steady state, reacting flows in fossil fuel fired industrial boilers and furnaces. The simulation tool will utilize: an adaptive mesh to provide the localized node density required to compute a detailed simulatio ...

The need to reduce ozone in urban areas has led to increased regulation for the control of the ozone precursors¿namely volatile organic compounds (VOCs) and nitrogen oxides. However, current control technologies, such as incineration and adsorption on solids, have a number of disadvantages for the wide range of VOC-emitting industries. Catalysts provide an alternative control strategy. Recent ...

The proposed research involves the development of a strategy for simplifying detailed chemical kinetic mechanisms for aviation fuels. A detailed mechanism describing the combustion of practical aviation fuels has recently been developed, Due to the large size and complexity of this mechanism, incorporation into state of the art CFD codes for simulation of turbulent reacting flows is precluded. ...

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