Patent ID: 11970619
Assignee: ERGON, INC.
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  E  Y | IPC C  E

Claim 1:
2. A composition according to claim 1, wherein at least some of the PAH compounds were removed by one or more of:
a) fractionally distilling the pyrolyzed oil fraction over a temperature range that removes a desired initial boiling point or desired minimum flash point pyrolyzed oil fraction and leaves behind at least some PAH compounds;
b) solvent extracting the pyrolyzed oil fraction using one or more solvents that remove a desired initial boiling point or desired minimum flash point pyrolyzed oil fraction and leave behind at least some PAH compounds;
c) centrifuging the pyrolyzed oil fraction to separate a desired initial boiling point or desired minimum flash point pyrolyzed oil fraction from a fraction containing concentrated PAH compounds; or
d) wiped film evaporating a desired initial boiling point or desired minimum flash point pyrolyzed oil fraction and leaving behind at least some PAH compounds.