Antifoulants for thermal cracking processes
AssigneePhillips Petroleum Company
InventorsRandall A. Porter, Larry E. Reed
Life of this patent
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Abstract
The formation of carbon on metals exposed to hydrocarbons in a thermal cracking process is reduced by contacting such metals with an antifoulant selected from the group consisting of a combination of tin and silicon, a combination of antimony and silicon and a combination of tin, antimony and silicon.
Claims30
A method for reducing the formation of coke on the metals which are contacted with a gaseous stream containing hydrocarbons in a thermal cracking process comprising the step of contacting said metals with an antifoulant selected from the group consisting of a composition comprising silicon and tin, a composition comprising silicon and antimony and a composition comprising silicon, tin and antimony, wherein said silicon, tin and antimony are present in said composition in a form selected from the group consisting of elemental metals, organic compounds and inorganic compounds.
A composition that is suitable as an antifoulant selected from the group consisting of a composition comprising silicon and tin, a composition comprising silicon and antimony and composition comprising silicon, tin and antimony, wherein said silicon, tin and antimony are present in said compositions in a form selected from the group consisting of elemental metals, organic compounds and inorganic compounds and in a form which is further characterized by being convertible to an oxide when contacted with air at a temperature of about 700.degree. C.
Dependencies are inferred from the claim text.