초록 ▼

An annular after reactor is aligned axially with the direction of exhaust flow from the exhaust port of jet engine undergoing static test. Located near the front end of the annular after reactor is a first set of gas injectors which extend inward into the interior of the after reactor. A second set

An annular after reactor is aligned axially with the direction of exhaust flow from the exhaust port of jet engine undergoing static test. Located near the front end of the annular after reactor is a first set of gas injectors which extend inward into the interior of the after reactor. A second set of gas injectors which are located downstream from the first set of gas injectors also extend inward into the interior of the annular after reactor. The first set of gas injectors inject natural gas or other fuel into the exhaust flowing from the jet engine, while the second set of gas injectors inject ammonia into the exhaust from the jet engine. The natural gas when ignited substantially raises the temperature of the jet engine's exhaust which incinerates the particulate and other combustible matter in the exhaust. Ammonia when injected into the exhaust stream for the jet engine's exhaust functions as a reductant to eliminate up to 90% of the NO.sub.X compounds in the exhaust stream.

대표청구항 ▼

[ What is claimed is:] [1.]1. 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, sai

[ What is claimed is:] [1.]1. 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.