Production of premium grade petroleum coke

Mineral oils: processes and products – Chemical conversion of hydrocarbons – Cracking

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C10G 914

Patent

active

044902441

ABSTRACT:
Graphite having a coefficient of thermal expansion of less than 5.times.10.sup.-7 cm/cm/.degree.C. over the range of 0.degree.-50.degree. C. is produced from premium petroleum cokes. The cokes are produced from feedstocks selected and blended on the basis of high resolution nuclear magnetic resonance spectroscopy of the hydrogen atoms in the raw material and multiple linear regression analysis of the various NMR bands as applied to a statistically significant number of feedstocks known to produce premium needle cokes together with a variable relating to thermal reactivity used to derive a predictive equation for the coefficient of thermal expansion.

REFERENCES:
patent: 3896023 (1975-07-01), Ozaki et al.
patent: 4043898 (1977-08-01), Kegler
J. K. Brown, W. R. Ladner, "Fuel", 39, 87 (1960).

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