Ube Industries, Inc.

Masahiro Nishida

Yasumasa Idei

Sadahiko Maeda

Hideaki Takahashi

A two fluidized bed type boiler comprises: an upstream combustion zone forming a fluidized bed of sand in which pulverized coal is burnt with air fed as a fluidizing gas; a downstream desulfurizing zone forming a fluidized bed of particulate limestone with flue gases stemming from the combustion zone as fluidizing gases; and an intermediate dust collecting zone, in which a baffle plate facing the combustion zone and extending downwards is provided, is arranged between the upstream and downstream zones to form a single and unitary passage for a flow of the flue gases over the three zones.

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Ube, Japan

Masahiro Nishida