Abstract:Green power generating plan was proposed when environmental awareness is heightened nowadays. This plan has been requested that a certain environmental index of projects need to meet nearly zero release, for instance, limited value of SO₂ emission concentration must above 35mg/m³, which makes existing desulfurization utility face reformation of capacity expansion. Taking a certain 330MW unit as an example, this paper analyzed current problem and through contrastive analysis, brought forward feasible economic and technical reformation plan.