Mitsubishi Jukogyo Kabushiki Kaisha

Mitsuharu Takaki

Kiichiro Ogawa

Yoshitaka Koga

Hiroshi Akiyama

A gasification furnace main body, having both a water-cooled wall structure and a duct having a water-cooled wall structure and containing therein a group of gas cooling heat-exchangers disposed within a pressure vessel, is improved in order to prevent a reduction in temperature of gas within the pressure vessel which would otherwise occur due to convection and to avoid the risk of fire and explosion which would otherwise be created by char accumulating within the pressure vessel. The improvements reside in an outlet of the duct and the inside of the pressure vessel communicating with each other at a defined location in the apparatus, a partition wall connecting the wall of the duct with an inner wall surface of the pressure vessel at a level higher than that location, and equalizing valves for placing the spaces on respective sides of the partition wall in communication with each other when a pressure difference between the respective sides of the partition wall has become a predetermined value or larger.

Growing community of inventors

Nagasaki, Japan

Mitsuharu Takaki