The invention belongs to the technical field of
liquid ammonia evaporation devices, and in particular, relates to a
liquid ammonia evaporator for
flue gas denitration. The
liquid ammonia evaporator comprises an
evaporator box body; a supporting base is arranged at the bottom of the evaporator box body; the evaporator box body comprises a vacuum layer, a box body outer shell, a foam layer and a boxbody inner shell; the vacuum layer is arranged on the inner side of the box body outer shell; the foam layer is arranged on one side, away from the box body outer shell, of the vacuum layer; a box body inner shell is arranged on one side, far away from the vacuum layer, of the foam layer; a plurality of
flue gas pipelines are arranged in the box body inner shell; a plurality of
flue gas sprayingopenings are formed in an inner ring of each
flue gas spraying pipeline. According to the liquid
ammonia evaporator, a traditional straight
pipe flue gas pipeline is arranged to be an annular flue gaspipeline, and the plurality of
flue gas spraying openings are formed in the inner ring; the plurality of
layers of annular flue gas pipelines are arranged, a liquid
ammonia coil
pipe is surrounded by360 degrees from top to bottom, the sufficiency and uniformity of heating of the liquid
ammonia coil
pipe are guaranteed, and the working efficiency of the liquid ammonia evaporator is greatly improved.