Accession Number : ADA294773

Title :   New Technology for Controlling NOx from Jet Engine Test Cells. Phase 1.

Descriptive Note : Final rept. Aug 88-Feb 89,

Corporate Author : ENERGY AND ENVIRONMENTAL RESEARCH OF NJ WHITEHOUSE WHITEHOUSE LAB

Personal Author(s) : Lyon, Richard K.

PDF Url : ADA294773

Report Date : JAN 1995

Pagination or Media Count : 47

Abstract : For some time the U.S. Air Force has been concerned with NOx emissions from jet engine test cells operated by the Air Force. While there are no regulations limiting the NOx emissions of these facilities, such regulations could develop in the near future and would pose significant problems for the Air Force because no available technology is suited for application to jet engine test cells. This report describes laboratory studies of a new NOx control process based on the surprising ability of barium oxide to rapidly capture NO, a process that could be ideally suited to controlling NOx emission from jet engine test cells. Thus, experiments were done in which a simulated exhaust gas containing NO was passed through a bed of either granular barium oxide or barium oxide supported on high-strength alumina. Quantitative NO removals were achieved at space velocities ranging from 2010 to 28,000 v/v/hr temperatures from 21 deg C to 610 deg C, oxygen concentrations of 1.1 to 15.3 percent, and initial NO concentrations from 94 to 1700 ppm. When NO2 was present in the simulated exhaust, it was also removed. The barium oxide was able to capture NO and NO2 in amounts up to at least 23.5 percent of its initial weight. The practical implication is that NOx emissions of a jet engine test cell could be controlled by replacing the acoustic panels now used to decrease the cell's emission of sound with a set of panel bed filters filled with barium oxide. These panel bed filters would also absorb sound, could fit in the space in the test cell now occupied by the acoustic panels, and would remove NO and NO2 from the exhaust before it is discharged to the environment.

Descriptors :   *AIR POLLUTION, *NITROGEN OXIDES, *EXHAUST GASES, REQUIREMENTS, SIMULATION, EXPERIMENTAL DATA, LABORATORY TESTS, QUANTITATIVE ANALYSIS, REACTION KINETICS, OXYGEN, GAS TURBINES, ALUMINUM, CATALYSIS, TEMPERATURE CONTROL, AIR FORCE FACILITIES, ENVIRONMENTAL PROTECTION, SORPTION, EMISSION CONTROL, CHEMICAL EQUILIBRIUM, CONCENTRATION(CHEMISTRY), JET ENGINE EXHAUST, GAS FLOW, ELECTROCATALYSTS, BARIUM OXIDES, ACOUSTIC INSULATION, REDUCTION(CHEMISTRY).

Subject Categories : Inorganic Chemistry
      Air Pollution and Control
      Combustion and Ignition
      Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE