Abstract:For the semi dry flue gas desulfurization system in ultra clean emission engineering, the original bag filter could not satisfy the more strict emission requirement any more, which needs an optimal upgrading. This paper introduced the optimization measures on various aspects, such as the airtocloth ratio of bag filter, updraft velocity, dust cleaning system, filter materials, presettling chamber, airflow distributing system, bypass system, control system, and installation accuracy, etc., which provided a reference for ultraclean emission engineering.

Keywords:ultra clean emission;semi dry flue gas desulfurization method, bag filter, air to cloth ratio