PROCESS AND APPARATUS FOR PRODUCING METALLURGICAL COKE FROM PETROLEUM COKE OBTAINED IN MINERAL OIL REFINERIES BY COKING IN "NON-RECOVERY" OR "HEAT-RECOVERY" COKING OVENS

摘要

The invention relates to a process for producing metallurgical coke from petroleum coke generated in crude oil refineries, by coking in “heat-recovery” coking ovens, starting from petroleum coke obtained or generated in crude oil refineries and possessing from the outset a volatiles content of 15 to 19 weight percent and an ash fraction of up to 2 Weight percent, this petroleum coke being introduced in densified form into a coking oven of “non-recovery” or “hat-recovery” construction for the purpose of cyclical coking, said oven being equipped with at least one externally heated burner, so that the primary healing space or the secondary heating space below the coking oven chamber, or both, are heated to a temperature of between 1000° C. to 1550° C., and within a time period of less than 120 h, the volatiles fraction present in the petroleum coke is completely outgassed, giving a metallurgical coke having a CSR strength of at least 44% and a CRI reactivity of less than 33%, being suitable for use as iron- and steelmaking coke The invention also relates to a coking oven which is constructed according to the “non-recovery” or “heat-recovery” coking ovens principle and which comprises a primary heating space, and which is equipped with burners which heat the primary heating space.

主权项

1. A process for producing metallurgical coke from petroleum coke obtained in the crude oil processing industry, where
petcoke from petrochemical processes is subjected to analysis of the volatiles content and the ash content, so that it can be sorted into hatches with a known content of volatile constituents and ash content, and a petroleum coke batch with a volatiles content of 15 to 19 weight percent and an ash fraction of less than 2 weight percent, based on the water-free and ash-free petroleum coke batch, is obtained by sorting, and is placed into a coke reservoir bunker or coke storage container, and this petroleum coke fraction from the coke reservoir bunker or coke storage container is placed by filling machines first into a compacting means for densification and then into a coking oven with the dimensions of the “non-recovery” or “heat-recovery” design for cyclical coking,characterized in that
the coking oven is equipped with at least one externally heated burner for heating the primary heating space above the petroleum coke cake or tot heating the secondary heating space below the coking oven chamber, or both, by which the petroleum coke in the coking oven chamber is heated with a heating gas to a temperature of 1000° C. to 1550° C. within a time period of less than 120 h, to give a metallurgical coke having a CSR strength of at least 44% and a CRI reactivity of less than 33%.