Processes for making mesophase pitch
AssigneeSaudi Arabian Oil Company
InventorsMohammad Alroaithi, Khalid Ali Almajnouni, Ali Alharbi
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Abstract
A process for making a mesophase pitch may include passing an aromatics-rich feed into a reactor and subjecting the aromatics-rich feed to a temperature of greater than or equal to 350° C. and a pressure of from 20 bar to 40 bar for a duration of from 4 hours to 10 hours in the reactor to produce the mesophase pitch. The total amount of molecular oxygen and peroxides in the reactor may be less than 1 mol. %. The aromatics-rich feed may include at least 80 wt. % aromatics and the aromatics-rich feed may include less than 3 wt. % of a combination of sulfur, nitrogen, and oxygen.
Claims21
A process for making a mesophase pitch, the process comprising:
- passing an aromatics-rich feed into a reactor, wherein:
- the total amount of molecular oxygen and peroxides in the reactor is less than 1 mol. %;
- the aromatics-rich feed comprises at least 80 wt. % aromatics selected from the group consisting of naphthalenes, acenaphthenes, acenaphthylenes, fluorenes, phenanthres, anthracenes, pyrenes, tetra-aromatics, penta-aromatics, or combinations thereof;
- the aromatics-rich feed comprises less than 3 wt. % of a combination of sulfur, nitrogen, and oxygen;
- and
- subjecting the aromatics-rich feed to a temperature of greater than or equal to 350° C. and a pressure of from 20 bar to 40 bar for a duration of from 4 hours to 10 hours in the reactor to produce the mesophase pitch.
Dependencies are inferred from the claim text.