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6.1.2.4.1 Green Petroleum Coke

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More than 70% of the petroleum coke produced is marketed as green coke. This green coke is a cheap fuel used primarily in the cement industry and for power generation. About half of the worldwide produced green coke amount is used for these two utilizations. Normally a mixture of coal and green coke with coal as main component is used, except for the cement industry in Europe, where the green coke dominates.

Due to the use of green coke for cement production, it is of interest to see the application of new quality “green cement” named “Celitement,” which needs only 50% of energy for the cement production [30].

Other green coke utilizations are iron and steel, lime, paper and pulp, and glass production.

Qualities with sulfur content below 1.5% are used as a supplementary substance for hard coke production, if the coal has too high a VCM content. In addition, this green coke is used in the production of carbides too.

There is increasing use of petroleum coke as addition to metallurgical coke [31] primarily used in blast ovens for producing iron.

Green coke is sold worldwide. The biggest transshipment center with some million tons of storage capacity is Rotterdam. For storing green coke it is recommended to spray the surface with water and dust bonding agent (e.g. extract of orange peels that are used in coal mines as well) to avoid dust clouds.

Industrial Carbon and Graphite Materials

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