| 摘要 |
PURPOSE:To enable petroleum coke having poor combustibility as fuel to be burnt in oil-fored boilers, by mixing petroleum coke with pitch, crushing the mixtue and adjusting its ash content and volatile matter content. CONSTITUTION:Petroleum coke is mixed with pitch in such a proportion that petroleum coke accounts for not more than 80wt% of the mixture. The mixture is crushed into a powder having such a particle size distribution that at least 70% of particles is passed through a 200-mesh sieve. The ash content and the volatile matter content of the powder are then adjusted so that the ash content is 2wt% or below and the volatile matter content is 20wt% or above. Examples of the petroleum coke are fluid coke, flexi coke and delayed coke abtd. by thermally cracking heavy oil by a coking process. Examples of the pitch are asphalt as solvent deasphalting residue, coal pitch and petroleum pitch obtd. by thermally cracking heavy petroleum oil with superheated steam.
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