Kureha Kagaku Kogyo Kabushiki Kaisha

Chiyoda Chemical Engineering Construction Co., Ltd.

Minoru Akimoto

Takeshi Nomura

Hiroshi Hozuma

Tomizo Endo

Naoshi Kawabe

Hisao Takahashi

Yoshitomo Ohara

Hajime Nakanishi

Naotaka Miwa

A decoking device suitable for use on a reaction vessel for the thermal cracking of heavy petroleum oils, including an assembly mounted on top of the reaction vessel and having a cylinder and a piston slidably and rotatably received in the cylinder, the cylinder and piston defining a scrubbing liquid chamber which is sealed from the outside. A scrubbing liquid is fed through the scrubbing liquid chamber to a main injection pipe to inject the liquid through a multitude of jet nozzles in the main injection pipe against the inner wall surfaces of the reaction vessel, the main injection pipe being connected to the piston for movement therewith.

Decoking apparatus

Growing community of inventors

Iwaki, Japan

Minoru Akimoto