Catalytic reforming method of naphtha

Abstract

The invention discloses a catalytic reforming method of naphtha. Naphtha is introduced into three or four reforming reactors which are connected with one another in series and are filled with a reforming catalyst; and reforming circulating hydrogen is introduced into the second reactor, or is divided into a plurality of strands, and is respectively introduced into the second reactor and various reactors on the downstream. According to the method, the reforming circulating hydrogen is not introduced into the first reactor, so that the total amount of carbon deposit of the catalyst can be reduced, the service life of the catalyst is prolonged, and the yield of a C5<+> liquid product is increased.

Description

technical field [0001] The invention is a hydrocarbon conversion method, in particular, a naphtha catalytic reforming method. Background technique [0002] The continuous catalytic reforming of naphtha has the characteristics of high liquid yield, high hydrogen production and high yield of aromatics. It has received great attention in the production of high-octane gasoline and aromatics, and will be used in the reforming process development process in the future. play a leading role in. [0003] The continuous reformer includes a reaction unit and a catalyst regeneration unit. Different types of continuous reforming processes employ different types of catalyst regeneration units. At present, most continuous reforming units in the world use four reactors, and a small number of reforming units use three reactors. The process of the reaction unit of the conventional continuous reforming unit is generally as follows: after the refined naphtha from the reforming pre-hydrogenat...

AI Technical Summary

Problems solved by technology

However, due to the small scale of the first reactor, the capacity expansion of old devices is often limited by the adhesion of the first reactor catalyst

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