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| | Energy Outlook |
 | | At the same time that this higher quality, coal-derived coke for steel production is becoming pricier, the world is being glutted with lower quality coke derived from petroleum, much of it produced in the US and Venezuela. |
 | | Petroleum coke (petcoke) is the byproduct of upgrading heavy oil into lighter oil, as done in a number of projects in Venezuela, or turning the heavy, tarry residue of petroleum refining into more valuable, lighter products, such as diesel fuel. |
 | | But petcoke is an ideal source of carbon for the gasification process, in which low value, high carbon materials such as coal, coke, or residual fuel are converted into a so-called synthesis gas, resembling very low-grade natural gas. |
| energyoutlook.blogspot.com /2004/03/making-lemonade-recent-article-on.html (531 words) |
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