Catalyst Lifting Device for Continuous Catalytic Reforming Unit

Abstract

The present invention provides a catalyst lifting apparatus of a continuous catalysis reforming apparatus, wherein the lifting between a reactor and a regenerator adopts nitrogen to lift. The catalyst lifting apparatus is characterized in that heating equipment is arranged on a nitrogen lifting pipeline. With the catalyst lifting apparatus of the continuous catalysis reforming apparatus, the nitrogen temperature is increased so as to improve the catalyst lifting effect, stabilize the catalyst circulation rate, reduce the catalyst wear, solve the catalyst breaking problem and ensure the long term operation of the apparatus; and in the practical application, the nitrogen temperature is increased to above 480 DEG C, such that the catalyst wear is reduced, the catalyst dust obtained through washing is less and is about 20-40%, and the benefits are considerable compared with no addition of the heat exchange facility.

Description

technical field [0001] The invention relates to a catalyst lifting device, in particular to a catalyst lifting device for a continuous catalytic reforming device in petroleum processing. Background technique [0002] Catalytic reforming is an important process of petroleum secondary processing, and it is a catalytic reaction process aimed at producing high-octane gasoline components and aromatics. Uninterrupted catalyst delivery is the key to the continuous reforming reaction, and the catalyst lifter is the key equipment to ensure the continuous circulation of the catalyst in the reaction-regeneration system. The catalyst enters the reactor sequentially from the upper hopper by its own gravity, the lower hopper to the catalyst lifter, and then lifts to the upper hopper of the next reactor by lifting gas, and lifts to the regenerator after coming out of the last reactor. Secondary coking, oxychlorination, roasting, reduction and other processes enter the first reactor to com...

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Problems solved by technology

[0003] The nitrogen gas between the regenerator and the reactor is lifted, and the catalyst powder carried in the nitrogen is recovered through the dust collector, and the nitrogen is pressurized by the compressor at room temperature and used to lift the raw / regenerated catalyst. In the prior art, the Sampling of the upgraded catalyst (including unused catalyst and regenerated catalyst), it was found that about 1% to 3% of the upgraded catalyst was fragmented, which increased the loss of the catalyst, blocked the Johnson net in the reforming reactor, and reduced the catalyst and oil gas. The contact time is too long, and even cause shutdown in severe cases. After replacing the catalyst and improving the strength of the catalyst, it still has little effect

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