311 高温ガス流中での廃棄物燃料燃焼における排出汚染物質の解明に関する研究(大気環境改善技術(2),大気・水保全技術)

Abstract

Experiment has been conducted to assess the emissions of CO, CO_2 and NOx which are produced by combustion of solid waste fuels in flowing high temperature burnt gas. The food of Nishiki-Koi (Japanese color carp) is used as standard test fuels because its composition and elements are very much similar to those of RDF and town gas. The configuration of the test fuel is the cylindrical shape of 20mm in diameter and 50mm in length and the ambient temperature and gas velocity, which are produced from the flat flame burner, are about 250℃ to 350℃ and 1.0m/s, respectively. The ignition of solid waste fuel is done by small nichrom wire and stable combustion of cylindrical solid waste fuels can be maintained during combustion process. The emissions of exhaust gas are measured by NAO gas analyzer. The main results obtained in the study are as follows: (1) though the emission of CO decreases with increasing ambient temperature and the emission of CO_2 increases with increasing ambient temperature, it is very difficult to achieve the complete combustion at less than 350℃ of ambient temperature and (2) the emission of NOx produced by waste fuel combustion increases with increasing ambient temperature even at lower oxygen concentration and this may be indicated that nitrogen components containing in waste fuels may be contributed to produce the emission of NOx.