The flue gas temperature of direct-fired machine is too high to save energy.
直燃机排烟温度过高，不利于节能，在烟道上加设余热回收装置。
High temperature air combustion is realized by adopting a new flue gas strategy.
热工制度上采用了高温烟气回流混合空气助燃方案，实现了高温空气燃烧。
High temperature air combustion is realized by adopting a new flue gas strategy.
热工制度上采用了高温烟气回流混合空气助燃方案，实现了高温空气燃烧。
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