Ammonia generator and exhaust purification device using the same

摘要

PROBLEM TO BE SOLVED: To obliterate, by providing an ammonia generator capable of generating ammonia from atmospheric air and water, the need for outfitting a large urea water tank or for supplying urea water.SOLUTION: The provided ammonia generator 3 includes: a superheated steam generation means 11 for generating, by heating water 9, a superheated steam 10 abiding in a completely gaseous state at or above the boiling point of the former and for providing high-temperature air 7 by transmitting atmospheric air 6 therethrough; a discharge plasma reactor 12 for generating ammonia 2 by transmitting, through a discharge plasma, and reacting the superheated steam 10 and high-temperature air 7 guided from the superheated steam generation means 11; and an oxygen consuming agent supply means 13 for supplying, into the discharge plasma reactor 12, an oxygen consuming agent having a higher reactivity with O or OH than with N within the discharge plasma.