| abstract |
A kind of emission-control equipment, it has at least more than one denitration catalyst oxidant layer, this denitrating catalyst makes mercury oxidation by removing from the nitrogen oxide in the waste gas of boiler and be sprayed in waste gas by hydrogen chloride, wherein, comprise be disposed in waste gas flue (19) in and with the spraying pipe joint (51) of the orthogonal insertion of gas flow direction of this flue (19) and at least four spray nozzles (52-1 ~ 52-4) being arranged at described spraying pipe joint (51), vertical eddy current (53) is formed from described spray nozzle (52-1 ~ 52-4) along gas flow direction, promote the diffusion of hydrogen chloride sharp, cut down the number of nozzle, even if the even concentration on catalyst position also can be guaranteed in enlarged nozzle interval. |