Regenerated catalyst thermoregulation device for catalytic cracking equipment

Abstract

The invention discloses regenerated catalyst temperature adjustment equipment for a catalytic cracker. The equipment can solve the problems that the catalyst-to-oil ratio of the prior catalytic cracker fails to be flexibly improved according to the actual requirement, or the catalyst-to-oil ratio can be adjusted, but has a complex structure. The invention is characterized in that: a catalyst cooler is arranged below a regenerator dense phase bed which is communicated with the catalyst cooler through a catalyst extraction hopper arranged at the lower part of the regenerator dense phase bed, a heat removing tube is arranged in the catalyst cooler, fluidized rings are sectionally arranged along the vertical height of the catalyst cooler,the upper part of the catalyst cooler is provided with a fume return device, and the fume return device is provided with a throttling device. The invention can ensure that the catalyst-to-oil ratio is flexibly improved during the catalytic cracking reaction.

Description

technical field [0001] The invention belongs to the field of catalytic cracking of hydrocarbon oil, and relates to a regenerated catalyst temperature regulating device of a catalytic cracking device. Background technique [0002] In the reaction process of the riser reactor of the catalytic cracking unit of the oil refinery, the catalyst-oil ratio of the reaction (the mass ratio of the catalyst participating in the reaction to the reaction feed oil) is an important parameter related to the reaction conversion rate and reaction selectivity. A larger and reasonable catalyst-to-oil ratio means an increase in the absolute number of catalyst active centers participating in the cracking reaction process, and also means an increase in the average activity of the catalyst in the entire reaction process. Increasing the average activity of the catalyst in the reaction process will increase the conversion of catalytic cracking reactions The efficiency and selectivity of the optimized r...

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the problem that the catalyst-oil ratio of the existing catalytic cracking unit cannot be flexibly increased according to actual requirements, or the catalyst-oil ratio can be adjusted but has a complex structure, and proposes a new catalytic cracking unit regenerated catalyst temperature-regulating equipment, the device It can flexibly increase the catalyst-to-oil ratio in the catalytic cracking reaction process within a certain range

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