Mitsubishi Jukogyo Kabushiki Kaisha

Mitsubishi Gas Chemical Company, Inc.

Mitsubishi Gas Chem. Company, Inc.

Kensuke Niwa

Hiroshi Makihara

Kazuhiro Morita

Kazuto Kobayashi

Ritsuo Hashimoto

Katsutoshi Murayama

Yoshimitsu Nakajima

Yoshihiko Saito

Masaaki Kuwa

Daisaku Shozen

Younosuke Hoshi

Toshikazu Shinkawa

Murayama Katsutoshi

Hisayoshi Fujita

Reaction vessel

A process for synthesizing material uses an exothermic reactor which comprises a coolant shell, two concentric pipes provided within the shell, a catalyst bed packed between inner and outer ones of the concentric pipes, an introduction tube connected to the inner pipe through which a starting fluid is introduced, and a communication path enabling the fluid after the passage of the inner pipe to be passed through the catalyst bed in a direction opposite to the direction of the passage through the inner pipe, the coolant shell having an inlet and an outlet for a coolant arranged in such a way that the flow of the coolant is parallel to the flow of the fluid within the catalyst bed. The coolant on the outside and the starting fluid on the inside of the catalyst bed cools the bed in such a way as to produce a temperature distribution along the bed that follows a maximum reaction rate line (M in FIG. 1) relating the concentration of the methanol to the temperature of the starting fluid.

Process for synthesizing methanol with an optimal temperature profile

A wetted wall type method of humidifying gas with a liquid which is composed, or mainly composed, of water wherein the liquid flows down a heated vertical wall to form a wetted wall and gas flows along the wetted wall in contact with the liquid on the wetted wall to increase the humidity contained in the gas, comprises supplying a greater amount of liquid than the amount of liquid used or evaporated for increasing the humidity, and recirculating the liquid which is not evaporated from an outlet of the wetted wall to a liquid supply portion, the amount of the flowing liquid being adapted to satisfy the following equation:

Method of humidifying a gas

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Tokyo, Japan

Kensuke Niwa