The Japan Steel Works, Ltd.

Other

Kubota Corporation

Chiyoda Chemical Engineering Construction Co., Ltd.

Masaji Yoneta

Jun Funakoshi

Akira Kosaka

Shuzo Matsumura

Takashi Yasunaga

Akira Yanoma

Masao Hattori

Kotaro Chiba

Yoshito Umeda

Jotaro Itoh

Takaharu Nitta

Rokuro Denda

Satoshi Hagi

Sakio Inoue

A hydrocarbon gas to be decomposed, optionally mixed with water vapor, is allowed to flow through the gap between various porous tubesconstituting a group of porous tubes provided extending vertically in a decomposition reaction columnwhile 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. With the diffusion flame layer as a heat source, the hydrocarbon gas to be decomposed, optionally mixed with water vapor, undergoes pyrolysis.

Process and apparatus for the pyrolysis of hydrocarbon gas

A heat exchanger using two hydrogen storage alloys, including: a tubular housing member disposed in a horizontal position; a vertical partition plate extending axially within the housing member for partitioning the inside space of the housing member into two, first and second reaction zones in which the first and second alloys are contained, respectively, to form an upper space above each alloy; first and second heat-exchange tubes disposed in the first and second reaction zones, respectively, and arranged so that first and second fluids may be passed therethrough for indirect heat exchange with the first and second alloys, respectively; openings provided in the vertical partition plate at least at positions so that the upper space in the first and second reaction zones are in fluid communication with each other; and a plurality of vertically extending gas passages provided in each of the first and second reaction zones, and each being in fluid communication with the upper space, whereby hydrogen gas released from one of the first and second alloys can efficiently diffuse in the other alloy.

Heat exchanger using hydrogen storage alloy

Growing community of inventors

Tokyo, Japan

Masaji Yoneta