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What is needle coke?

asked Jan 9, 2016 in Process by jensi129 (500 points)

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answered Jan 9, 2016 by cobiesmith (3,310 points)
Needle coke is formed from condensed aromatic compaunds by cross linking the aromatic rings of the high boiling arromatic compounds (typicaly 510 degC or higher). The resulting crystalline, silver gray colored coke is called needle coke because of its erratic, but clearly noticeable structure resembling broken needles.

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