Municipal solid waste incinerators are designed to enhance the electrical efﬁciency obtained by the plant as much as possible. For this reason strong integration between the ﬂue gas cleaning system and the heat recovery system is required. To provide higher electrical efﬁciencies acid gas neutralization process has the major importance in ﬂue gas cleaning system. At least four technologies are usually applied for acid gas removal: dry neutralization with Ca(OH)2 or with NaHCO3, semi-dry neutralization with milk of lime and wet scrubbing. Nowadays, wet scrubbers are rarely used as a result of the large amount of liquid efﬂuents produced; wet scrubbing technology is often applied as a ﬁnal treatment after a dry neutralization. Operating conditions of the plant were simulated by using Aspen Plus in order to investigate the inﬂuences of four different technologies on the electrical efﬁciency of the plant. The results of the simulations did not show a great inﬂuence of the gas cleaning system on the net electrical efﬁciency, as the difference between the most advantageous technology (neutralization with NaHCO3) and the worst one, is about 1%.
|Titolo:||Simulation of the influence of flue gas cleaning system on the energetic efficiency of a waste-to-energy plant|
|Data di pubblicazione:||2009|
|Digital Object Identifier (DOI):||10.1016/j.apenergy.2008.12.035|
|Appare nelle tipologie:||1.1 Articolo in rivista|