ADDITIVES FOR NOX EMISSIONS CONTROL FROM FIXED SOURCES

SEVERAL EXHAUST GAS NO(X) ABATEMENT PROCESSES EXIST BASED ON HETEROGENEOUS REACTION OF A REDUCED NITROGEN CONTAINING ADDITIVES SUCH AS NH(3). NONE OF THESE EXISTING PROCESSES CAN BE USED IN ITS PRESENT FORM TO MEET PROPOSED NO(X) EMISSIONS REGULATIONS ON JET TEST STATIONS AND INCINERATORS. WE PROPOSE TO TEST COMBINATIONS OF ADDITIVES AND CATALYSTS THAT HAVE THE POTENTIAL TO LEAD TO A NEW PROCESS OF THE SELECTIVE CATALYTIC REDUCTION (SCR) TYPE THAT CAN FILL THIS NEED. IN COMMERCIALLY AVAILABLE SCR PROCESSES ALMOST HALF OF THE REVENUE REQUIRED IS FOR THE COST OF CATALYST REPLACEMENT. BY USING A MORE REACTIVE ADDITIVE WE ANTICIPATE THAT A SIMPLER AND THEREFORE LONGER LIVED, LESS EXPENSIVE CATALYST CAN BE USED TO PROVIDE A PREFERRED PROCESS. OUR PROPOSED PHASE I PROJECT CONSISTS OF FIXED BED ADDITIVE/CATALYST SCREENING TESTS AND SUBSEQUENT ENTRAINED FLOW TESTS OF PROMISING CANDIDATE COMBINATIONS. THE DATA ACQUIRED FROM THESE TESTS WILL ESTABLISH THE FEASIBILITY OF OUR APPROACH AND PROVIDE NECESSARY DATA FOR THE DESIGN OF A BENCH SCALE PROTOTYPE IN A PHASE II PROGRAM.