Three section type catalystic conversion method of petroleum hydrocarbon raw material and its device

Abstract

The invention relates to a three-stage petroleum hydrocarbon raw material catalytic conversion method and the reactor thereof, belonging to petroleum hydrocarbon catalytic conversion process field. And the method makes raw oil, back-refined oil, and gasoline react separately and not interfere with one another; the catalytic cracking reacting region of a heavy oil reactor uses regenerated catalyst, and the modifying reacting region supplements low temperature catalyst after gasoline reaction, forming second reacting region; after the gasoline reaction ends, the extracted catalyst is fed into the second reaction region of heavy oil reaction and continues being used; the gasoline reaction and back-refined oil cracking reaction adopt regenerated catalyst temperature lowering solution, implementing high solvent-oil ratio working condition. And the reactor is a combined reactor composed of heavy oil reacting part and parallel and interconnected gasoline reacting parts. And it separately refines different materials and makes gasoline and heavy oil cooperate with each other and their advantages complementary; and raises reacting efficiency and improves product quality.

Description

technical field [0001] The invention belongs to the technical field of catalytic conversion process devices for petroleum hydrocarbons, in particular to a three-stage catalytic conversion method for petroleum hydrocarbon raw materials producing clean fuel oil from petroleum hydrocarbon raw materials with high conversion rate and producing gasoline with low olefin and low sulfur content and devices. Background technique [0002] The fluid catalytic cracking process has gone through 60 years of development and has made great achievements and technological progress. The development of society makes the requirements for this process continuously increase, especially in terms of environmental protection, which poses new challenges to the catalytic cracking process, that is, not only to achieve economic benefits but also to meet the requirements of environmental protection. Gasoline standards in developed countries require olefins to be below 18% (weight) and sulfur content to be...

AI Technical Summary

Problems solved by technology

These low-carbon, low-temperature, high-activity catalysts in the prior art are not utilized, but directly enter the regenerator, which is not conducive to regeneration

In the existing technology of separate cracking of recycled oil and raw oil, since the height of the required riser reactor is only about half of the conventional one, it is necessary to build another catalyst container similar to a regenerator to transport the regenerant to a certain height in order to provide the reaction riser. Supply agent, catalyst transportation energy consumption is also high

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