Internal structure diagram of a semi-continuous catalytic reforming reactor

Without catalyst regeneration, the catalyst is taken out for regeneration after about 1 year of use

This post was last edited by zwhwxhzyl on 2017-1-9 at 11:35. It’s not exactly like that; generally, reformation can be carried out in three ways: fixed-bed, semi-continuous regeneration, and continuous regeneration. The fixed-bed method is relatively simple – it involves a fixed bed. Semi-continuous regeneration was presumably a technology developed by IFP and UOP in the 1980s and 1990s; its reforming reactor was a radial reactor in which the catalyst flowed continuously, while the regenerator was of fixed-bed type. Once the upper hopper of the regenerator was filled, catalyst was fed into it. There, the catalyst underwent processes such as coking, oxychlorination, and calcination before being discharged into the lower hopper. There, it was reduced and then lifted to the upper hopper of Reactor 1 to enter the reactor. Continuous regeneration is the regenerator with a closed hopper structure that is currently used more frequently. In the case of semi-regeneration, from the perspective of a single catalyst, after going through processes 1, 2, 3, and 4, it waits in the upper hopper. The regenerator can be considered like a pressure cooker: once the catalyst at the bottom has been processed, it is placed in the lower hopper, after which the catalyst in the upper hopper can enter the regenerator for regeneration. This process is semi-continuous. Continuous regeneration, on the other hand, refers to the process in which a single catalyst goes through coking, oxychlorination, and calcination as it moves down from the closed hopper. It is estimated that what the poster is looking for are drawings of semi-continuous reforming reactors; in the 1990s, UOP and IFP both adopted reactors of this type, which are essentially the same as those used in continuous regeneration reforming.