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Low excess air combustion and two-stage combustion are currently being attempted as a means of reducing NO x emission from the boiler in pulverized coal-fired power plants. However, a strong reducing atmosphere is formed in the region between burners and air ports in the case of two-stage combustion. This atmosphere promotes the formation of hydrogen sulfide (H 2 S), which causes sulfidation...
It is strongly desired for coal-fired power plants in Japan to utilize not only low-rank coals with high moisture and high ash contents, but also high-rank coals with high fuel ratio for diversifying fuel sources and lowering cost. In this study, pulverized coal combustion characteristics of high-fuel-ratio coals are experimentally investigated using an approximately 100kg-coal/h pulverized coal combustion...
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