Process and apparatus for the pyrolysis of hydrocarbon gas

US6921517B2 · kind B2 · utility

Assignees

• Shuzo Matsumura · GB
• THE JAPAN STEEL WORKS, LTD. · JP
• KUBOTA CORPORATION · JP

Inventors

• Shuzo Matsumura · London, GB
• Masaji Yoneta · Muroran, JP
• Rokuro Denda · Tokyo, JP
• Yoshito Umeda · Ebeye, US
• Masao Hattori · Ebeye, US
• Satoshi Hagi · Nagoya, JP
• Jun Funakoshi · Kawasaki, JP
• Akira Kosaka · Yao, JP

Key dates

• Filing date: Dec 11, 2001
• Grant date: Jul 26, 2005
• Expiry date: Mar 18, 2023

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2219/00157
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A hydrocarbon gas to be decomposed, optionally mixed with water vapor, is allowed to flow through the gap between various porous tubes 4 constituting a group of porous tubes provided extending vertically in a decomposition reaction column 1 while air or oxygen is jetted homogeneously from the interior to the exterior of the porous tubes in the direction perpendicular to the stream of the hydrocarbon gas to be decomposed, optionally mixed with water vapor. The mixture is then ignited to form a diffusion flame layer B on the outer surface of the porous tubes 4. With the diffusion flame layer as a heat source, the hydrocarbon gas to be decomposed, optionally mixed with water vapor, undergoes pyrolysis.