Jgc Corporation

Kunio Ishii

Takahiro Iijima

Naohiko Kagawa

Keikichi Maeda

Kenji Sato

Toshikazu Nakamura

Keizo Hosoya

Katsumi Yamamoto

Muneyasu Ichimura

Rin Sasano

Takeo Murata

A heating furnace tube, a method of using the same and a method of manufacturing the same which have been developed with a view to eliminating inconveniences occurring when a carbon-containing fluid is made to flow in the heating furnace tube. The heating furnace tube which comprises a rare earth oxide particle distributed iron alloy containing 17-26 wt. % of Cr and 2-6 wt. % of Al. The method of manufacturing this heating furnace tube which comprises the steps of forming or inserting an insert metal on or into at least one of a joint end portion of one heating furnace tube element and that of the other heating furnace tube element, bringing these two joint end portions into pressure contact with each other directly or via an intermediate member, and diffusion welding the two heating furnace tube elements to each other by heating the insert metal.

Heating furnace tube and method of manufacturing the same

The surface of an apparatus made of a Fe base alloy or Ni base alloy containing at least 35 wt. % of Cr is resistant to carbon deposition when the apparatus contacts carburizing/oxidizing atmospheres.

Carbon containing compound treating apparatus with resistance to carbon

A carbon deposition preventive double-layered tube for handling carbon compounds at not less than 500.degree. C., the double-layered tube comprising:

Carbon deposition preventive double-layered tube for handling

An apparatus for treating carbon containing compounds such as hydrocarbons or their derivatives, or carbon monoxide or the like at temperatures higher than 500.degree. C., wherein at least a member contacting with said carbon containing compounds at temperatures higher than 500.degree. C. is composed of any one of Fe base, Ni base and Co base alloys or their mixed Fe-Ni, Fe-Co, Ni-Co and Fe-Ni-Co alloys, each containing at least 28 wt.% of Cr, and this member can exhibit a superior resistance to carbon deposition.

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Yokohama, Japan

Kunio Ishii