HIGH TEMPERATURE REMOVAL OF PARTICULATES AND NOX FROM COAL-FUELED DIESEL ENGINE EXHAUST (7530-140)

THE DEPARTMENT OF ENERGY, MORGANTOWN ENERGY TECHNOLOGY CENTER (METC) IS CURRENTLY FUNDING THE DEVELOPMENT AND COMMERCIALIZATION OF COAL FUELED DIESEL (CFD) ENGINES FOR BOTH STATIONARY AND MOBILE APPLICATIONS. STATIONARY CFD ENGINES FOR POWER PRODUCTION WILL HAVE TO COMPETE WITH OTHER CONVENTIONAL SOURCES OF SMALL POWER PRODUCTION. TO ACCOMPLISH THIS, NOX EMISSIONS WILL HAVE TO BE REDUCED BY 60TO 80 PERCENT. TO IMPROVE ENERGY CONVERSION EFFICIENCY STATIONARY DIESEL ENGINES ARE EQUIPPED WITH TURBOCHARGERS. PARTICULATE ENTERING THE TURBOCHARGER MUST BE LESS THAN 5 TO 10 MUM IN DIAMETER TO MINIMIZE EROSION. PARTICLES IN THE ENGINE EXHAUST HAVE A MASS MEAN SIZE OF ABOUT 10 MUM AND TYPICALLY CONTAIN 70 TO 85 PERCENT CARBON. THEREFORE, SELECTIVELY REMOVING CARBON FROM THE PARTICULATE ENTERING THE TURBOCHARGER SHOULD REDUCE THE MEAN PARTICLE SIZE TO ABOUT 7 MUM. PREVIOUS WORK HAS SHOWN THAT NO CAN BE REDUCED TO N2 BY REACTION WITH COAL CHARS. WORK BY PSI TECHNOLOGY COMPANY (PSIT) HAS DEMONSTRATED 70 PERCENT NOX REDUCTION BY CFD PARTICULATE AT 750 DEGREES FAHRENHEIT, DURING WHICH THE CARBON WAS CONSUMED. WE PROPOSE TO INVESTIGATE NO REDUCTIONBY CFD PARTICULATE AT TURBOCHARGER INLET TEMPERATURES (800 TO 1000 DEGREES FAHRENHEIT) USING A GAS COMPOSITION COMPARABLE TO CFD ENGINE EXHAUST. USING THESE DATA, A FIRSTGENERATION REACTOR FOR HIGH TEMPERATURE REMOVAL OF PARTICULATES AND NOX FROM CFD ENGINE EXHAUST WILL BE DESIGNED FOR PILOT-SCALE TESTING IN A PHASE II SMALL BUSINESS INNOVATIVE RESEARCH PROJECT.