Optimization of reburning and repowering for municipal solid waste incineration plants with respect to life-cycle energy consumption and carbon dioxide emissions

摘要

There is a growing interest in the new technologies of reburning and repowering applied to a Municipal-Solid-Waste-driven power plant. The reburning uses natural gas as a deoxidating agent to reduce NO{sub}x concentration in the effluent gas andlessen load on the subsequent equipment of gas treatment. The technology of repowering is to increase the steam temperature and cycle efficiency of power generation by use of other heat source such as gas turbine exhaust gas. It should be, however,recognized that the installation of equipment required for such technologies results in the consumption of some additional amounts of energy and resources and their associated environmental burdens.An analysis was conducted to estimate a life-cycle energy consumption or production, and carbon dioxide emission for introducing the reburning and repowering into an incineration plant for Municipal Solid Waste with power generation. The result showedthat there is an optimal scale in the gas turbine cooperated for the repowering.