Regenerated catalyst thermoregulation device for catalytic cracking equipment

Abstract

The invention discloses a regenerated catalyst temperature-adjusting apparatus for a catalytic cracking device, aiming at solving the problem that the catalyst to oil ratio can not be flexibly improved according to the actual requirements or the ratio can be adjusted but with a complicated structure. The regenerated catalyst temperature-adjusting apparatus of the invention is characterized in that the sidewall of the regenerator dense bed is provided with a catalyst pumping exit through which the catalyst temperature reductioner is connected with the regenerator dense bed and a thermal regenerated catalyst pumping exit; the pre-lifting mixer located in the lower part of the riser reactor is connected with the catalyst temperature reductioner through a delivery pipe for cold regenerated catalyst and a cold regenerated slide valve and is connected with the regenerator dense bed through a delivery pipe for thermal regenerated catalyst and thermal regenerated slide valve. The invention can improve the flexibility of ratio of catalyst to oil.

Description

technical field [0001] The invention belongs to the field of hydrocarbon oil catalytic cracking, and relates to a catalytic cracking device regeneration catalyst temperature adjustment equipment. 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 react...

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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 device. By setting adjustable heat extraction facilities to control the heat intake, the temperature control and adjustment of the regenerated catalyst before the reaction can be realized, so as to achieve a flexible increase in the ratio of agent to oil in the reaction process

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