Cooling air distribution apparatus

A cooling air distribution apparatus contained within a turbine engine exhaust system in communication with, and downstream of, a turbine engine producing an exhaust gas flow having a first temperature and upstream of a catalyst, wherein said first temperature of said exhaust gas is of such a high temperature that the performance and longevity of said catalyst is reduced, said apparatus comprising:

• a cooling air distribution housing having an inlet end, an outlet end and a substantially circular exterior wall therebetween, a substantially circular interior wall defining an annular chamber, said substantially circular interior wall defining a substantially circular passage, substantially circular wall therebetween defining a substantially circular passage to allow said exhaust gas flow to travel from said turbine engine and to said catalyst;
• a cooling air providing assembly in communication with said cooling air having a second temperature distribution housing providing cooling air to said annular chamber;
• and
• a plurality of cooling air distribution conduits extending from said annular chamber through said substantially circular interior wall and into said substantially circular passage and being aligned substantially uniform in one or more rows around the circumference of said interior wall of said cooling air distribution housing, each of said plurality of cooling air distribution conduits providing passage for said cooling air into said substantially circular passage to homogeneously mix with said exhaust gas flow,
• said second temperature of said cooling air being lower than said first temperature of said exhaust gas flow such that said exhaust gas flow is cooled to an appropriate temperature to maintain said catalyst's performance characteristics.