Passivation of steel surface to reduce coke formation

Details Passivation of steel surface to reduce coke formation Passivation of steel surface to reduce coke formation

C - Chemistry, Metallurgy

23

C

C23C 22/00 (2006.01) C10G 9/00 (2006.01)

Patent

CA 2532813

The present invention provides a process to treat steels, preferably carbon steel to reduce the tendency of the steel to form coke when in contact with hydrocarbons at elevated temperatures. The steel may be first reduced then treated with a mixture of compounds which further modify the reduced surface and finally the treated steel surface is cured. The treated steel has a reduced propensity to form coke when in contact with hydrocarbons particularly at higher temperatures.

L'invention concerne un procédé de traitement des aciers, de préférence, l'acier au carbone, afin de diminuer la tendance de l'acier à former du coke lorsqu'il se trouve en contact avec des hydrocarbures à des températures élevées. L'acier est réduit, traité avec un mélange de composés qui modifie davantage la surface réduite, enfin la surface de l'acier traité est durcie. Ce traitement réduit la tendance de l'acier à former du coke lorsqu'il se trouve en contact avec des hydrocarbures, notamment à des températures élevées.

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