Turbulent flow ammonia spraying grating in boiler flue gas denitration system
A technology of boiler flue gas and ammonia injection grid, which is applied in injection devices, gas treatment, injection devices, etc., can solve the problems of small diffusion range of ammonia/air mixed gas, short service life of nozzles, poor mixing uniformity, etc., and achieve Ensure long-term safe and stable operation, prolong service life and improve mixing effect
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[0022] The present invention will be further described below in conjunction with the drawings.
[0023] Such as Figure 1 to 3 As shown, a turbulent ammonia injection grid in a boiler flue gas denitration system includes a grid main pipe 1, a grid branch pipe 2 and a nozzle 3, and the nozzle 3 is welded to the upper part of the grid branch pipe 2. An annular spoiler 4 is welded on the nozzle 3. The annular spoiler 4 is perpendicular to the nozzle 3 and is located at the upper end of the nozzle 3. Among them, the grid manifold 1 and the grid branch pipe 2 and the nozzle 3 The number can be set according to the actual flue size and flue gas volume. Here are two grille header pipes 1 and six grille branch pipes 2. Each grille branch pipe 2 is provided with 7 nozzles 3, each The nozzles 3 on the grid branch pipe 2 are arranged in a staggered arrangement, the angle α between the nozzles 3 and the flue gas flow direction is 10°~45°, where the angle α is designed to be 25°, and the dia...
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