Centrifugally cast double-layer tube with resistance to carbon d

Details Centrifugally cast double-layer tube with resistance to carbon d Centrifugally cast double-layer tube with resistance to carbon d

1983-07-26

1985-08-20

Andrews, Melvyn J.

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

428656, 428678, 428680, 428682, 428683, 428685, 428679, 138143, B32B 1500

Patent

active

045364559

ABSTRACT:
A centrifugally cast double-layer tube with resistance to carbon deposition, comprising an inner layer of a specific metallic material containing 1-10 wt % of Al and an outer layer of a heat resisting metallic material, can be applied to apparatuses for treating a fluid, containing hydrocarbons, their derivatives, or carbon monoxide, at elevated temperatures and to piping for transferring the fluid without carbon deposition on its inside surface, because the surface of said inner layer is oxidized to form a firm Al-containing oxide film prior to and/or during the treatment of the fluid, and also a sufficient strength and ductility of the tube are preserved by the support of the outer layer of said tube.

REFERENCES:
patent: 4022587 (1977-05-01), Wlodek
patent: 4054723 (1977-10-01), Higginbothan et al.
patent: 4101715 (1978-07-01), Rairden, III
patent: 4117179 (1978-09-01), Jackson
patent: 4357394 (1982-11-01), Khandros
patent: 4429019 (1984-01-01), Schrewelius
Chemistry and Physics of Carbon, (P. L. Walker, Jr., ed.), vol. 1, pp. 265 and 311-316, (1965), M. Dekker, New York.
"1983 Annual Book of ASTM Standards", vol. 03.02, title page and pp. 134, 136 and 471, (1983), ASTM, Philadelphia.
"Journal of Catalysis", 33, pp. 98 and 100, (1974).
"Werkstoffe und Korrosion" 28, pp. 1 and 3, (1977).
"Corrosion" (L. L. Shreir, ed.), vol. 1, title pages and 1.3-1.15, (1963), George Newnes Limited, London.

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