Continuous reforming process for hydrocarbons

Abstract

The invention discloses a continuous reforming process for hydrocarbons. The invention is characterized in that the process comprises three reforming reactor groups and one regenerator, wherein a first reforming reactor group comprises two reforming reactors, a second reforming reactor group only comprises one reforming reactor, and a third reforming reactor group only comprises one reforming reactor; conveying of reaction feed for each reactor corresponding to each reforming reactor group is carried out in series connection; conveying of catalysts between each reactor group as well as cyclic conveying of catalysts between the reactor group and the regenerator are carried out in parallel connection, but conveying of the catalysts in the first reforming reactor group is carried out in series connection. Fresh catalysts with high activity can be used in each reactor group, catalysts in each reactor group can be independently adjusted according to needs, and flows of catalysts in each reactor group can be changed, so that activity of the catalysts can be fully performed, the utilization rate of the catalysts is improved, and the reforming conversion rate and the product yield are enhanced.

Description

technical field [0001] The invention relates to a hydrocarbon continuous reforming process. Background technique [0002] Continuous reforming is a secondary petroleum processing technology. The processed raw materials are mainly low-octane straight-run naphtha, hydrogenated naphtha, etc., using platinum Pt-tin-Sn bimetallic catalysts, at about 500 ℃ At high temperature, the molecules are rearranged, isomerized, the production of aromatics is increased, and the octane number of gasoline is increased. [0003] Moving bed reactor continuous regenerative reforming, referred to as continuous reforming. At present, the three main suppliers of continuous reforming patented technology that have been industrially applied in the world are UOP of the United States, Axens of France and SEI of China. In the continuous reforming unit, the catalyst continuously flows through three (or four) moving bed reactors in series, and the charcoal content of the raw catalyst flowing out from the ...

AI Technical Summary

Problems solved by technology

Although the system can adjust the catalyst circulation speed according to the reaction situation and the coking situation of the catalyst because the regulating valve is installed, it is still the form of the aforementioned "downstream" continuous reforming process in terms of the flow direction of the reaction feed and the catalyst, and Does not overcome the aforementioned problems of the "co-current" continuous reforming process

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