Mitsui Chemicals, Inc.

Hisayoshi Watanabe

Satoru Ohtani

Tomohiro Arase

Yoshiaki Kikuchi

Ryouichi Yamamoto

Fumio Hattori

Jun Iwama

In a gas phase olefin polymerization process using a fluidized bed vessel, an apparatus is employed having a device for measuring temperature or temperature distribution on the external wall surface of the vessel and a controlling means which predicts the progressive state of reaction inside the vessel, calculates the difference between the measured value and a target value determined beforehand and modifies polymerization conditions in relation thereto.

Fluidized bed polymerization apparatus and an olefin polymerization process

In a gas phase olefin polymerization process using a fluidized bed vessel, an apparatus is employed having a device for measuring temperature or temperature distribution on the external wall surface of the vessel and a controlling means which predicts the progressive state of reaction inside the vessel, calculates the difference between the measured value and a target value determined beforehand an modifies polymerization conditions.

Fluidized bed polymerization apparatus having temperature distribution monitoring

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Sodegaura, Japan

Hisayoshi Watanabe