PETROLEUM COKE PRODUCTION PROCESS Russian patent published in 2007 - IPC C10B55/00 

FIELD: petroleum processing.

SUBSTANCE: invention aims at simultaneously producing petroleum coke with low and high contents of volatiles, which coke, after calcination, can be used to manufacture anodes or graphitized products. Process of producing petroleum coke through retarded coking of petroleum residues comprises supplying feedstock to coke chamber at 475-485°C, coking during 14 to 36 h, discharging resulting coke by drilling central well in the coke bulk and cutting coke of the top part of chamber until it is completely emptied at a depth 4-5 m, discharged coke is removed from under the chamber and after that cutting of coke is continued in the lower part of chamber until it is also completely emptied. Thereafter, coke discharged from the top part of chamber and coke discharged from the lower part of chamber are stored separately. The former contains at least 15% volatiles and is used as substitute of sintering and thinning components in coal coking charge in blast furnace coke production and the latter contains no more than 11% volatiles.

EFFECT: enabled simultaneous production of volatiles-rich and low-volatile cokes.

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