This invention belongs to a dry method of smoke dissipation and desulfurization by adding ammonium gas. The purpose of this invention is to provide a simple, easy to control, low capital cost and low operation cost method of smoke dissipation and desulfurization. Smoke passes through mechanical deduster first, and then mixed with ammonium gas of certain quantity under adjusted temp. and humidity, so that SO2 reacts with NH3 directly, the resulting ammonium salt is finally trapped by collector together with smoke dust. This invention can be used in enviromental engineering of smoke desulfurization. |