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Method and equipment for raising effect of steam stripping at stripping section of catalytic cracking

A technology of catalytic cracking and stripping stage steam, which is applied in catalytic cracking, cracking, petroleum industry, etc. It can solve the problems of complex structure and difficult cleaning of foreign matter, so as to improve the stripping effect, reduce the maintenance amount of the device, and increase the reliability of the device Effect

Active Publication Date: 2005-11-16
LUOYANG PETROCHEMICAL ENG CORP SINOPEC
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  • Abstract
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Problems solved by technology

[0004] The present invention is aimed at the existing technology that needs to add new parts in the settler, so that there are problems such as complex structure, foreign matter is not easy to clean up, etc., and provides a method and equipment for improving the stripping effect of the fluid catalytic cracking stripping section, using The method provided by the invention can effectively improve the stripping effect of the stripping section. The equipment provided by the invention has simple structure and easy operation, and there is no need to add parts in the settler, etc.

Method used

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  • Method and equipment for raising effect of steam stripping at stripping section of catalytic cracking

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Embodiment Construction

[0010] As shown in the figure, the catalytic cracking unit includes a riser reactor 1, a settler 2, a stripping section 3 and a regenerator 4. The bottom of the riser reactor 1 is provided with a raw oil inlet 10 and a catalyst inlet 11, and the top is provided with a lift The outlet 8 of the tube reactor is located in the settler 2, and a catalyst lifting delivery pipe 5 is arranged outside the regenerator 4. The lower part of the catalyst lifting delivery pipe 5 is connected to the regenerator 4 through the catalyst inclined pipe 6, and the upper part is provided with an outlet of the catalyst lifting delivery pipe. 9. Located in the settler 2, the slide valve 7 is set on the catalyst inclined tube 6.

[0011] The method for improving the stripping effect of the catalytic cracking stripping section as shown in the figure: the feed oil and the catalytic cracking catalyst enter the riser reactor 1 through the feed oil inlet 10 and the catalyst inlet 11 at the bottom of the rise...

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Abstract

A method for increasing the stripping effect of the stripping segment in catalytic cracking apparatus by adding catalyst delivering tube to increase the temp of stripping segment by 10-40 deg.C features that part of regenerated catalyst is delivered into settling unit via catalyst lifting tube for mixing with the catalyst to be generated from lift-tube reactor and then being delivered into stripping segment, and the rest of regenerated catalyst is directly delivered in the lift-tube reactor for cyclic use.

Description

technical field [0001] The invention belongs to the field of fluidized catalytic cracking of hydrocarbons, in particular to a method and equipment for improving the stripping effect of a catalytic cracking stripping section. Background technique [0002] With the development of society and economy, the catalytic cracking process, one of the most effective hydrocarbon conversion processes, is facing urgent requirements for improving economic efficiency and product quality, and achieving greater feed rate and / or conversion rate does not correspond to Increasing too much investment in reformation is one of the key points in the development of catalytic cracking. The biggest bottleneck to a productive revamp to achieve greater feed rates and / or conversions is usually the effective increase in regeneration capacity. Since the improvement of the regeneration capacity of the catalytic device is directly related to the structure and specifications of the front main air system, rege...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G11/00
Inventor 董肖昱孙依群郝希仁
Owner LUOYANG PETROCHEMICAL ENG CORP SINOPEC
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