摘要 |
An oven for treating a moving web has, within each zone (A), an incinerator (C) with a long holding period for receiving combustion products directly from a burner (B) and mixing them with process exhaust air from nozzles applying heated air to the web, and passing the products of the incinerator to a heat exchanger (E) for heating air from the nozzles prior to return of the heated air thereto.
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