Japan Tobacco Inc.

Katsuhide Yokota

Susumu Uchida

Takashi Ogawa

Koji Sakamoto

Akihiro Sugiyama

Kazuo Yoshimoto

Chihiro Hanaoka

Nobuyasu Endo

Yasuhiro Ohdaka

A flash dryer of cut tobacco comprises a drying duct () for connecting a feeding section () of cut tobacco to a tangential separator (). The drying duct () has an upstream-side duct portion () extending straight from the feeding section () at an elevation angle ranging from 30&#xb0; to 60&#xb0; and a downstream-side duct portion () curving upward in a convex shape. A dry gas that flows through the drying duct () may contain superheated steam.

Flash dryer for particulate materials

An apparatus for carrying out a method of controlling the moisture of tobacco material comprises a hollow rotating cylinder () having an inlet () and an outlet () for tobacco material, and a feeding device for supplying a moist air flow into the rotating cylinder () such that the moist air flow runs out from the inlet () toward the outlet () within the rotating cylinder (). Temperature and relative humidity of the moist air flow supplied into the rotating cylinder () are within the range of 40-80&#xb0; C. and 80-95%, respectively.

Method of controlling moisture of material and apparatus therefore

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Hiratsuka, Japan

Katsuhide Yokota