Thermal conversion of heavy hydrocarbons to mesophase pitch

By using a combination of a continuous flow tubular reactor and a cyclone separator at high temperatures, heavy raw materials can be directly converted into mesophase asphalt, solving the problem of high production costs of mesophase asphalt and achieving efficient and low-cost production of mesophase asphalt, thus expanding its application range.

CN117295805BActive Publication Date: 2026-06-19EXXONMOBIL CHEMICAL PATENTS INC
10 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
EXXONMOBIL CHEMICAL PATENTS INC
Filing Date
2022-04-06
Publication Date
2026-06-19

AI Technical Summary

⚠Technical Problem

The production cost of mesophase pitch in existing technologies is high and difficult to scale up. Traditional methods are inefficient, which limits the application of pitch-based carbon fibers.

⚗Method used

By employing a single thermal step in a continuous flow tubular reactor at high temperatures, combined with a cyclone separator, heavy feedstocks are directly converted into mesophase pitch. By controlling the equivalent reaction time and pressure conditions, efficient production of the mesophase is achieved.

🎯Benefits of technology

It achieves high-yield and low-cost production of mesophase pitch, suitable for large-scale industrial applications, and reduces the production cost of pitch-based carbon fibers.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

A method for producing mesophase bitumen, the method comprising: providing a raw material having a T5 ≥ 400°F (204°C) and a T95 ≤ 1,400°F (760°C); heating the raw material at a temperature of at least 450°C to produce a heat-treated product comprising mesophase bitumen, wherein the heating is carried out under reaction conditions sufficient to have an equivalent reaction time of greater than or equal to 1,000 seconds; and recovering the mesophase bitumen.
Need to check novelty before this filing date? Find Prior Art