Cracking a C4-C7 fraction of pyoil
AssigneeExxonMobil Product Solutions Company
InventorsDaryl Bitting, Kenny Randolph Parker, Michael Gary Polasek, David Eugene Slivensky, Xianchun Wu, Jerome Leonard Stavinoha, Jr.
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Abstract
A hydrocarbon cracker stream is combined with recycle content pyrolysis oil to form a combined cracker stream and the combined cracker stream is cracked in a cracker furnace to provide an olefin-containing effluent. The r-pyoil can be fed to the cracker feed. Alternatively, the r-pyoil with a predominantly C4-C7 fraction can be fed to the cracker feed. The furnace can be a gas fed furnace, or split cracker furnace.
Claims8
A steam cracker feedstock composition comprising (i) a recycle content pyrolysis oil composition (r-pyoil), wherein said r-pyoil has not been hydrotreated;
- wherein said r-pyoil has a C8+ content of at least 35 weight percent, based on the total weight of said r-pyoil;
- wherein said r-pyoil comprises not more than about 30 weight percent total aromatics, based on the total weight of said r-pyoil;
- wherein said r-pyoil is present in said steam cracker feedstock in an amount of not more than about 40 weight percent and/or at least about 1 weight percent;
- and wherein said r-pyoil comprises at least 35 weight percent of C4 to C7 hydrocarbons, based on the total weight of the r-pyoil, and (ii) a C2 to C4 non recycle hydrocarbon stream comprising ethane and/or propane, in an amount of at least 55 weight percent, based on the total weight of the steam cracker feedstock.
Dependencies are inferred from the claim text.