Method for catalytic conversion of heavy oil and device thereof

Abstract

The invention provides a method of heavy raw material catalytic conversion and the device, comprising: the heavy hydrocarbon raw material passing through the first and second reaction area of the raiser reactor and contacting with catalyst for first reaction and second reaction, the reactants entering into the settler for the separation of catalyst and oil gas, steam stripping the separated catalyst through stripping section and introducing it to the reactivator for carbon burning reactivation, the reactivated catalyst returning to the raiser reactor after cooled or directly to the raiser reactor for reuse. After the heavy oil passing through the device said above, the volume content of olefin decreases by 10~40%, octane value increases 0.5~1 units, sulfur content in petrol decreases 10~30% by weight. After the poor petrol passing through the device said above, the volume content of olefin decreases by 10~60%, octane value increases 0.5~40 units, sulfur content in petrol decreases 10~50% by weight.

Description

technical field [0001] The invention belongs to the field of catalytic cracking, in particular to a method and a device for catalytic conversion of heavy oil by utilizing catalytic cracking. The present invention particularly relates to the catalytic conversion and upgrading of feedstocks containing high boiling point fractions, such as over 560°C, and low-quality gasoline. Background technique [0002] With the worsening of crude oil quality and the increasing trend of heavy quality, the blending ratio of catalytic cracking residual oil continues to increase, and the quality of gasoline produced by catalytic cracking, coking, thermal cracking and other processes has become worse. On the one hand, olefins in gasoline are effective components with high octane number; on the other hand, they produce more pollutants in the combustion process to pollute the environment. Although the olefins in gasoline can be reduced to a very low level by traditional hydrorefining, the octane ...

AI Technical Summary

Problems solved by technology

The disadvantage of this technology is that the regenerated agent and the spent agent are directly mixed, which reduces the activity of the catalyst entering the riser reactor, which is not conducive to the catalytic cracking reaction

[0009] The current heat extraction technology has an adverse effect on the optimization of the reaction system because it only extracts heat in the dense phase section of the regenerator, and the current technology for optimizing the operation of the reaction system has its shortcomings

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