Process for producing mesophase pitch by hydrogenation of high-temperature coal tar
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United States of America Patent
Stats
-
Jun 12, 2018
Issued Date -
N/A
app pub date -
Apr 6, 2012
filing date -
Jan 12, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A process for producing mesophase pitch from high-temperature coal tar comprises: removing salts and quinoline insoluble fraction from a high-temperature coal tar to obtain a decant oil; using the decant oil as a hydrogenation feedstock, or pre-distilling the decant oil to obtain a residue with a boiling point higher than 230 and formulating the residue into a hydrogenation feedstock; catalytic hydrorefining the hydrogenation feedstock to obtain a hydrofined oil; distilling the hydrofined oil to obtain hydrogenated pitch; and subjecting the hydrogenated pitch to the thermal polymerization to obtain the mesophase pitch. The process has features such as an easily controllable degree of hydrogenation, complete removal of impurities, good raw material flowability, not tending to form the carbon deposition and the coking during the process, and not tending to jam the reactor. The product has a high content of mesophase pitch, a low softening point and a low impurity content.
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International Classification(s)
- 2012 Application Filing Year
- C10G Class
- 641 Applications Filed
- 587 Patents Issued To-Date
- 91.58 % Issued To-Date
Cited Art Landscape
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- 0 Citation Count
- C10G Class
- 0 % this patent is cited more than
- 7 Age
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