Abstract
This report discusses the principles and performance of an advanced fluidized-bed incinerator installed with an independently controlled secondary swirl combustion chamber. The system we have developed employs a secondary combustion swirl chamber to incinerate unburned combustibles from the initial burning. The combustibles are carried into the secondary chamber by bed material. Discussion includes promotion of the combustion of char as a typical difficult-to-burn matter, and the successful control of carbon monoxide and dioxin emissions. Also we were studied the behavior of dioxins and their precursors as well as their homologue distribution along the gas flow. Good prospects of achieving an equivalent dioxin toxicity concentration of 0.5 TEQ ng/m 3 N or less at the induced draft fan (IDF) outlet were realized through optimizing combustion conditions and maintaining a low flue gas temperature in the bag filter.
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