| 摘要 |
<p>A method of inhibiting the formation and deposition of coke on the metallic parts of the system during the high temperature processing of a hydrocarbon without attendant substantial corrosion of metallic parts in contact with said hydrocarbon being processed, which comprises adding to the hydrocarbon to be heated and processed at a temperature of at least 621 DEG C (1150 DEG F) a boron compound selected from boric acid, providing that said acid contains a minimal amount of water, boron oxide compounds, and organo boron compounds. …<??>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 without the attendant corrosion thereof, which furnace is being used to crack a petroleum feedstock to produce olefins, and said metal surfaces thereof having temperatures of about 621 DEG C (about 1150 DEG F) or above, which method comprises adding to the feedstock before and/or during cracking thereof a coke inhibiting amount of a boron compound selected from boric acid, providing said acid contains a minimal amount of water; boron oxide compounds; and organo boron compounds.</p> |
