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US 12,612,562 B2Granted
Thermal conversion of heavy hydrocarbons to mesophase pitch
AssigneeExxonMobil Chemical Patents Inc.
InventorsYifei Liu, Teng Xu, Stephen T. Cohn, Jeffrey C. Yeh
Life of this patent
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Abstract
A process for producing mesophase pitch, the process including: providing a feedstock having a T5≥400° F. (204° C.) and a T95≤1,400° F. (760° C.); heating the feedstock at a temperature of at least 450° C. to produce a heat treated product including mesophase pitch, wherein the heating is conducted under reaction conditions sufficient to have an equivalent reaction time greater than or equal to 1,000 seconds; and recovering the mesophase pitch.
Claims16
A process for producing mesophase pitch, the process comprising:
- providing a feedstock having a T5≥400° F. (204° C.) and a T95≤1,400° F. (760° C.);
- heating the feedstock at a temperature of at least 450° C. to produce a heat treated product including mesophase pitch, wherein the heating is conducted under reaction conditions sufficient to have an equivalent reaction time greater than or equal to 1,000 seconds;
- and
- recovering the mesophase pitch.
1 more element
A system, comprising:
- a reactor configured to receive a feedstock having a T5≥400° F. (204° C.) and a T95≤1,400° F. (760° C.) and to heat the feedstock at a temperature of at least 450° C. to produce a heat treated product including mesophase pitch, wherein the reactor is configured to heat the feedstock under reaction conditions sufficient to have an equivalent reaction time greater than or equal to 1,000 seconds, and wherein the reactor comprises a means for controlling a liquid linear velocity in the reactor which causes mesophase precursors to be in slurry form;
- and
- a separation device in fluid communication with the reactor, wherein the separator is configured to separate mesophase pitch from an effluent received from the reactor.
Dependencies are inferred from the claim text.