| abstract |
A kind of flue gas circulating fluidized bed associating demercuration dearsenification device, comprise the economizer, selective catalytic reduction denitration device, air preheater, fluidized-bed reactor, sack cleaner, desulfurizing tower and the chimney that connect successively through flue, be set side by side with shunting flue and main flue gas pipeline two-way pipeline between described economizer and fluidized-bed reactor, main flue gas pipeline communication is to the bottom port of fluidized-bed reactor; Shunting flue is disposed with hydrogen bromide solution from economizer to fluidized-bed reactor and adds branch road and adsorbent interpolation branch road, the end of shunting flue is communicated with the bottom of fluidized-bed reactor through flue gas nozzle, and flue gas nozzle is positioned at the top of fluidized-bed reactor bottom port; The below of described sack cleaner is provided with adsorbent recovering mechanism.The utility model does not produce secondary pollution, and the removal efficiency of mercury and arsenic is high, can effectively prevent the mercury that produces in coal-fired flue-gas and arsenic to the pollution of atmospheric environment. |