초록

A reactor system and process for hydrotreating a heavy feedstock contaminated with metals sulfur and carbon residue using an upflow fixed bed reactor with at least two catalyst layers having different hydrogenation activity.

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A reactor system and process for hydrotreating a heavy feedstock contaminated with metals sulfur and carbon residue using an upflow fixed bed reactor with at least two catalyst layers having different hydrogenation activity. y provides protection against the corrosive environment of low resistivity

A reactor system and process for hydrotreating a heavy feedstock contaminated with metals sulfur and carbon residue using an upflow fixed bed reactor with at least two catalyst layers having different hydrogenation activity. y provides protection against the corrosive environment of low resistivity soils, acidic soils, soils with various sulfides, and anaerobic and aerobic soils. 11. The method of providing corrosion protection as defined in claim 1, wherein the aluminum-silicon alloy covering the pipe to be protected may initially have holes through which corrosion of the pipe to be protected may occur. 12. The method of providing corrosion protection as defined in claim 1, wherein the pipe to be protected may have casting flaws which prevent the aluminum-silicon alloy from completely covering the pipe to be protected. 13. A method for providing corrosion protection and resistance to gouging for materials in a corrosive environment, said method comprising the steps of: a) providing an alloy consisting essentially of aluminum and silicon, the silicon being between 5 and 15 percent of the alloy; b) providing a metallic material to be protected on which said aluminum-silicon alloy is to be applied; c) applying said aluminum-silicon alloy on said material to be protected; and d) placing the aluminum-silicon alloy protected material underground. 14. A method for providing corrosion and gouging protection for materials in a corrosive environment, said method comprising the steps of: a) providing an alloy consisting essentially of aluminum and silicon, the aluminum being between 85 and 95 percent of the alloy; b) providing an iron pipe to be protected on which said aluminum-silicon alloy is to be applied; c) arc spraying said aluminum-silicon alloy on said iron pipe to be protected; and d) placing the aluminum-silicon alloy protected iron pipe underground. 15. A method for providing corrosion protection and gouging resistance for materials in a corrosive environment, said method comprising the steps of: a) providing an aluminum-silicon alloy having between 85 and 95 percent aluminum and between 5 and 15 percent silicon; b) providing an iron pipe to be protected on which said aluminum-silicon alloy is to be applied; c) thermal spraying said aluminum-silicon alloy on said iron pipe to be protected so as to anodize the aluminum-silicon alloy; and d) placing the aluminum-silicon alloy protected iron pipe underground.