Abstract: An apparatus is provided for injecting and mixing a treating agent into a fluid stream. The apparatus comprises at least one pipe having a treating agent flowing therethrough. A flow mixer having a planar middle section with two furcated sides is disposed along the length of the pipe. Each furcated side may include at least two branches, each of which may have a flattened outer edge. The pipe has holes that may inject the treating agent towards the planar middle section. Adjacent flow mixers are separated by a distance. As fluid flows into and past the flow mixers, the injected treating agent is mixed with the fluid stream and the mixing is enhanced in turbulent mixing zones in between the flow mixers.

Abstract: An apparatus is provided for injecting and mixing a treating agent into a fluid stream. The apparatus comprises at least one pipe having a treating agent flowing therethrough. A flow mixer having a planar middle section with two furcated sides is disposed along the length of the pipe. Each furcated side may include at least two branches, each of which may have a flattened outer edge. The pipe has holes that may inject the treating agent towards the planar middle section. Adjacent flow mixers are separated by a distance. As fluid flows into and past the flow mixers, the injected treating agent is mixed with the fluid stream and the mixing is enhanced in turbulent mixing zones in between the flow mixers.

Abstract: An air ammonia heater and vaporization chamber system utilizing a contiguous vaporization chamber having an inlet for receiving dilution air, which is passed across at least one heating element integrated into the vaporization chamber to heat and pre-heat the vaporization chamber. Aqueous or anhydrous ammonia is injected from at least one ammonia injector, which is integrated into the vaporization chamber, into the heated dilution air. The heated ammonia/air mixture may then be passed through a bed of packing prior to being released from the vaporization chamber. The bed of packing maintains the heated, homogenous ammonia/air mixture at a minimum temperature of 350° F. to ensure the air/ammonia mixture does not condense. The air ammonia heater and vaporization chamber system may be used in the vaporization and bleeding of ammonia with air for NOx reduction in the flue gas from heat recovery steam generation systems, packaged boilers, simple cycle catalyst systems or fired heaters.

Abstract: An ammonia injection grid for a selective catalytic reduction (SCR) system that provides uniform distribution of ammonia to the SCR catalyst in NOx reduction systems for heat recovery steam generation systems, packaged boilers, simple cycle catalyst systems and fired heaters for superior operational efficiency. The ammonia injection grid includes an injection tube having at least one nozzle for injecting ammonia into a flow of flue gas. The ammonia injection grid also includes a corrugated turbulence enhancer associated with the injection tube to generate turbulent wake to enhance turbulent mixing.

Abstract: A multi-bed selective catalytic reduction system comprising a gas input duct, a first ammonia injection grid assembly located downstream from the gas input duct, a first selective catalytic reduction catalyst assembly located downstream from the first ammonia injection grid assembly, a second ammonia injection grid assembly located downstream from the first selective catalytic reduction catalyst assembly, a second selective catalytic reduction catalyst assembly located downstream from the second ammonia injection grid assembly, and an exhaust stack located downstream from the second selective catalytic reduction catalyst assembly.