Contact chamber for catalytic cracking of oil

Abstract

A catalytic cracking oil contact chamber, comprising the following components: a cylinder body (10), an inclined partition plate (16-7), a vertical partition plate (16-4), a gas distribution plate (16-10), and a gas collecting chamber A separator (16-1), a hydrocarbon oil nozzle (16-6), and an inclined tube reaction section (5); wherein, the inclined separator, the vertical separator and the hydrocarbon oil nozzle are arranged in the center of the cylindrical oil agent contact chamber One side of the axis; the oblique partition is fixed on the inner side of the upper edge of the cylinder, and the angle γ with the central axis is 30-60°; the upper edge of the vertical partition is fixedly connected with the lower edge of the oblique partition; the oblique partition and the The vertical partition divides the space above the oil contacting indoor gas distribution plate into two areas; and the gas collection chamber partition is vertically fixed below the gas distribution plate, and divides the space below the oil contacting indoor gas distribution plate into two areas. Two gas collecting chambers corresponding to the positions of the above two zones; the hydrocarbon oil nozzle is fixedly connected with the cylinder and passes through the vertical partition, and the included angle α with the horizontal direction is 5-30°.

Description

technical field [0001] The invention belongs to petroleum hydrocarbon catalytic cracking equipment, more specifically, an oil agent contact chamber used in a downward catalytic cracking process. Background technique [0002] For more than 50 years, catalytic cracking has played a pivotal role in the world oil refining industry. Therefore, there are relatively many researches on catalytic cracking technology and catalyst technology, and the development is rapid. From the fluidized bed reactor to the riser reactor, the reaction time is greatly shortened, the product selectivity is improved accordingly, the gasoline yield is greatly increased, the coke yield is greatly reduced, and the proportion of slag mixed is rapidly increased. At present, catalytic cracking technology is developing in two directions, one is residual oil catalytic cracking, and the other is catalytic cracking that produces more gaseous olefins. With the increase in the quality of raw oil and the improveme...

AI Technical Summary

Problems solved by technology

[0003] 1) The back-mixing of solvent oil contact will lead to colloid and asphaltene adsorption coke formation in residue oil, high coke formation coefficient of residual carbon conversion, insufficient conversion depth of heavy oil, and poor product selectivity

[0004] 2) Catalyst back-mixing and prolongation of residence time intensify the secondary reaction and metal dehydrogenation reaction, increase the carbon deposition on the catalyst, decrease the reaction activity, and increase the light olefins

Although the cross-flow contact strengthens the agent-oil contact, there are still weaknesses such as poor agent-oil contact efficiency

Images