Flue gas catalyzed sorption is demercuration device in coordination

The utility model provides a flue gas demercuration device, the device adopt mercury removal catalyst and flue injection adsorbent to carry out high -efficient demercuration in coordination with the technique. Wherein the mercury removal catalyst layer arrange the denitration ammonia injection grid upper reaches or (with) flue gas denitration catalyst layer low reaches, the adsorbent sprays at dust collector upper reaches flue. Hg0 major part under mercury removal catalyst's effect changes hg2+ into in the flue gas, and the abundant mixing of adsorbent, the reaction absorption that get into the flue gas simultaneously with the injection are later by absorbent mercury at dust collecting equipment along with particulate matter desorption in the lump, by further absorption of absorbent mercury quilt in absorbing device to mercury in effective controlled discharge flue gas. The utility model provides a method and technology is simple for the flue gas demercuration, convenient operation, and the demercuration rate