Mitsubishi Heavy Industries Limited

Kazumitsu Suzuki

Toru Takashina

Naohiko Ukawa

Kazuaki Kimura

Shinichiro Kotake

In a flue gas treating system, an absorption tower (), a reheating section () and a fan () are arranged in line on a vertical axis so as to function as at least a part of a stack for emitting the treated flue gas into the atmosphere. Moreover, in a flue gas treating process, the amount of ammonia injected in the denitration step (a denitrator ()) and/or the amount of ammonia at a point downstream of the denitration step are determined so as to be on such an excessive level that ammonia or ammonium salt will remain in the flue gas introduced into the desulfurization step (absorption tower ()). Thus, the size and cost of the equipment can be reduced.

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Tokyo, Japan

Kazumitsu Suzuki