Nitrogen oxide smoke steam recovery system

The invention relates to a nitrogen oxide smoke steam recovery system and belongs to the field of waste gas recovery treatment. The nitrogen oxide smoke steam recovery system consists of air compression equipment, a vacuum injection device, a front condensate collection device and a connecting pipeline, wherein a downwards inclined inlet pipeline is backwards led out of an inlet of the vacuum injection device; the tail end of the inlet pipeline downwards extends to an upper end inlet of the front condensate collection device; an exhaust pipeline is upwards led out of a nitrogen oxide smoke generation device , and the upper end of the exhaust pipeline is bent downwards to be communicated with the inlet pipeline after exceeding the inlet pipeline; an outlet pipeline is forwards led out of anoutlet of the vacuum injection device and connected with an inlet of a nitrogen oxide smoke treatment device; an injection pipeline is upwards led out of an injection nozzle air inlet of the vacuum injection device and conne