Methods and compositions for boronizing metallic surfaces
AssigneeBetz Laboratories, Inc.
InventorDwight K. Reid
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Abstract
The present disclosure is directed to methods and compositions for boronizing metal and in particular ferrous surfaces. It has been discovered that if hydrocarbons are processed in metallic equipment which have been previously boronized, that coke formation and deposition which is commonly experienced at high temperatures can be minimized if not totally eliminated. The compositions utilized for this purpose are comprised of boron or boron compounds contained in an organic solvent or carrier together with specific activating materials.
Claims12
In a method of inhibiting the formation and deposition of filamentous coke on the surface of metallic equipment used for the processing of a hydrocarbon at temperatures in the range of about 900.degree. to 1300.degree. F., where the undesired filamentous coke formation is commonly experienced, which method comprises processing said hydrocarbon in equipment which has been previously contacted with a liquid composition comprising a boron source selected from the group consisting of elemental boron, boron oxide compounds and metal borides suspended or dissolved in an organic liquid carrier containing an activator which permits and enhances the reaction between the metal of the metal surface and the boron to achieve the boronization thereof, said contact being for a time and at a temperature sufficient to provide a uniform boronized surface on the metallic surface which will come in contact with the hydrocarbon to be processed, said surface while being contacted with said composition being at a temperature of from about 1000.degree.-1400.degree. F.
Dependencies are inferred from the claim text.