Kureha Kagaku Kogyo Kabushiki Kaisha

Chiyoda Chemical Engineering Construction Co., Ltd.

Masaichi Ohtake

Masatomo Shigeta

Hiroshi Hozuma

Tomizo Endo

Masaharu Tomizawa

Hideo Kikuchi

Shoichi Motokawa

Yutaka Sumida

Toru Kawahara

Keiji Nagayama

In a process for the thermal cracking of a heavy hydrocarbon in a cylindrical reactor, a portion of the content material in the reactor is taken out and injected back into the reactor according to a specific procedure to form a 'wet wall' or liquid curtain on the inner peripheral wall of the reactor, thereby preventing coking in the reactor. The apparatus includes a radially outwardly extending interior annular recess around an upper portion of the inner wall thereof and forming a part of said inner wall and plural means for tangentially injecting the recycled liquid into said recess.

Apparatus for the thermal cracking of heavy hydrocarbon

In a process for the thermal cracking of a heavy hydrocarbon in a cylindrical reactor, a portion of the content material in the reactor is taken out and injected back into the reactor according to a specific procedure to form a 'wet wall' or liquid curtain on the inner peripheral wall of the reactor, thereby preventing coking in the reactor.

Method for the thermal cracking of heavy hydrocarbon

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Iwaki, Japan

Masaichi Ohtake