HIGH GRADE PETROLEUM RESIDUE RECYCLING WITH SHALE ADDITIVE

Abstract

This work covers thermal cracking of tar in a mixture with milled oil shale for production of components of motor oils and feedstock for catalytic cracking. It contains the results of optimization of technological parameters (shale concentration, temperature and timing) and material balance (mass %) of the process. It has been determined that one-stage processing under the relatively mild conditions (5 MPa, 425°C, feed space velocity of 1.0 h-1) results in a deep destruction of tar (gasoline yield with boiling point up to 180°C is approx. 12 mass %; middle distillate yield with boiling point of 180-360°C is 43-44 mass %; yield of feed for catalytic cracking with boiling point of over 360°C is approx. 15-16 mass % in terms of initial tar). The formed coke-like products including V and Ni contained in the feedstock are deposited on the mineral part of shale and removed from the reaction zone along with liquid process products.

References

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