Patent ID: 6237395
Filing Date: 2001-05-29
Classification: F01D

Abstract:
An apparatus for removing particulate matter and nitrogen oxides from an exhaust stream generated by a jet engine under test, said apparatus comprising:an annular after reactor aligned axially with a direction of exhaust flow from an exhaust port of said jet engine, said annular after reactor having a cylindrical shaped outer casing, and an interior;first injecting means located within the interior of said annular after reactor for injecting natural gas into said exhaust stream to remove said particulate matter from said exhaust stream when a temperature for said exhaust stream is raised to a first temperature range;igniting means positioned adjacent said first injecting means to ignite said natural gas injected into said exhaust stream raising the temperature of said exhaust stream to said first temperature range which removes said particulate matter from said exhaust stream; andsecond injecting means located within the interior of said annular after reactor downstream from said first injecting means, said second injecting means injecting ammonia into said exhaust stream to remove said nitrogen oxides from said exhaust stream when the temperature of said exhaust stream is within a second temperature range.