| 摘要 |
A regenerative bed incinerator 10 is provided with a gas recirculation duct 80 through which a controlled amount of gaseous fuel is injected in the contaminated process exhaust gases 3 prior to admission to the regenerative bed incinerator 10 to increase the heating valve of the process exhaust gases 3 so as to improve overall contaminated destruction efficiency for process exhaust gases which have a low level of combustible contaminants therein.
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