FIELD: gas industry; technological processes.
SUBSTANCE: invention relates to systems for removing nitrogen oxides from gases and may be used for cleaning exhaust gases of gas turbine engines, for example, gas pumping units, gas-turbine power plants. Exhaust system includes a gas duct with a device for feeding a reducing agent, spacer, diffuser and exhaust pipe, having a selective catalytic reduction catalyst. At inlet and outlet of spacer there is a grid with cells in form of channels. Diffuser is equipped with longitudinal plates attached by their ribs to inner surface of diffuser and form with each other and with walls of diffuser conical gas channels with opening angle of 7–10 degrees. Grids can be arranged with increasing number of cells in area of maximum speed of exhaust gases.
EFFECT: invention provides aerodynamic uniform flow of exhaust gases at inlet of selective catalytic reduction catalyst.
1 cl, 4 dwg
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