Composition and method for coke retardant during pyrolytic hydrocarbon processing
AssigneeBetz Laboratories, Inc.
InventorsDavid R. Forester, Dwight K. Reid
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Abstract
The present invention is directed to a method of inhibiting the formation of coke during the elevated temperature cracking of hydrocarbons. The method generally comprises adding to the hydrocarbon an effective amount of an ammonium borate, particularly ammonium biborate and ammonium pentaborate. Preferably, the ammonium borates are in a glycollic solvent or water.
Claims28
A method of inhibiting the formation and deposition of pyrolytic coke on the heated metal surfaces of the structural and associated parts of a pyrolysis furnace which is being used to crack a petroleum feed stock to produce lower hydrocarbon fractions and said metal surfaces thereof having a temperature of about 1600.degree. F. or above, which method comprises adding to the feedstock before and/or during cracking thereof a coke inhibiting amount of an ammonium borate compound.
In a method of inhibiting the formation and deposition of pyrolytic coke on the heated metal surfaces of the structural and associated parts of a pyrolysis furnace, which furnace is being used to crack a petroleum feedstock to produce olefins, and said metal surfaces thereof having temperatures of about 1400.degree. F. or above, which method comprises adding to the feedstock before and/or during cracking thereof a coke inhibiting amount of an ammonium borate compound.
Dependencies are inferred from the claim text.