Hydrocarbon conversion catalyst regeneration burning method and regenerator burning area structure

Abstract

The invention discloses a hydrocarbon conversion catalyst regeneration burning method and a regenerator burning area structure, and solves the problems that a hydrocarbon conversion catalyst burning area has a temperature runaway risk and the like in the prior art. The method comprises the following steps of: introducing a catalyst to be regenerated into a radial catalyst moving bed burning area by means of gravity, contacting oxygen-containing regeneration gas, and burning carbon deposit on the catalyst; and introducing into a chlorine oxidation area under the action of gravity, wherein a catalyst moving bed in the burning area is provided with a quick firing section, a transition section and a superheat section from top to bottom in turn; and the thickness ratio of catalyst beds in the quick firing section and the superheat section is 0.25-1 and the height ratio is 1-8.

Description

technical field [0001] The invention belongs to the field of petrochemical industry, and relates to a method for regenerating and burning a hydrocarbon conversion catalyst and a new structural form of the burning area of ​​a regenerator. Background technique [0002] Catalytic reforming is one of the important processes in oil refining and petrochemical industry. It is a hydrocarbon conversion process. Naphtha is used as raw material to generate reformed oil rich in aromatics through hydrogen catalytic reaction, and by-product hydrogen and liquefied petroleum gas. Reforming conversion is accompanied by carbon deposition reaction, deep dehydrogenation of hydrocarbons to generate olefins, olefin cyclization and polymerization to form condensed ring aromatics, which are adsorbed on the surface of the catalyst and finally form carbon deposition to deactivate the catalyst. The deactivated catalyst needs to be regenerated to restore its activity. The most important first step in ...

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Problems solved by technology

[0009] The present invention aims at the disadvantages of overheating risk in the scorched zone of hydrocarbon conversion catalysts (such as reforming catalysts) in the prior art, and provides a new catalyst regeneration scorched method and scorched zone structure, which can be effectively avoided by using the present invention During the catalyst regeneration process, due to the failure to burn the residual carbon in time, when the oxygen content of the gas in the system suddenly increases, a sudden temperature will be generated near the inner net of Johnson in the upper part of the bed, resulting in damage to the Johnson net.

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