Abrégé

The invention relates to the field of oil refining and petrochemisty, and more particularly to technology and devices for refining a hydrocarbon feedstock in a continuous reforming process on a catalyst in a moving or fluidized bed, and for the oxidative regeneration of the reforming catalysts. Using the invention makes it possible to reduce catalyst attrition from 2.5-3.4% to 2.2-2.8% (i.e. by 14-17%) and to reduce the time taken to restore catalyst activity from 3.5-3.0 hours to 3.0-2.6 hours (i.e. by 12-15%).

Classes IPC  ?

• B01J 8/08 - Procédés chimiques ou physiques en général, conduits en présence de fluides et de particules solidesAppareillage pour de tels procédés avec des particules mobiles
• B01J 23/56 - Métaux du groupe du platine
• B01J 23/92 - Régénération ou réactivation de catalyseurs contenant des métaux, oxydes ou hydroxydes prévus dans les groupes
• C10G 35/085 - Réformage catalytique caractérisé par le catalyseur utilisé contenant des métaux du groupe du platine ou leurs composés

Abrégé

The invention relates to the field of oil refining and petrochemistry. A reactor-regenerative block of a reforming plant includes a reactor unit comprising a reactor and a coked catalyst bin located at the outlet of the reactor, a regeneration column, a gas preparation system and pipelines. Further included are a purge bin arranged between the reactor outlet and the coked catalyst bin, and a hopper for coked catalyst preparation, which is connected to the top portion of the regeneration column and to the coked catalyst bin via a gas mixture filtration system. Moreover, the hopper for coked catalyst preparation, the regeneration column, the reactor, the purge bin and the coked catalyst bin are arranged vertically one under another. The coked catalyst bin and the hopper for coked catalyst preparation are connected to each other by a pipeline, into the bottom part of which a nitrogen and air mixture containing 0.5-2.0 vol% of oxygen is fed. The invention makes it possible to reduce the break up of the catalyst and to shorten decoking time by 10-20% while maintaining the process efficiency.

Classes IPC  ?

• C10G 35/10 - Réformage catalytique avec des catalyseurs mobiles
• B01J 38/04 - Traitement avec un gaz ou une vapeurTraitement avec des liquides vaporisables au contact du catalyseur épuisé

Abrégé

The present apparatus relates to the petrochemical and oil refining industry, and more precisely to devices for carrying out processes for catalytically converting hydrocarbons in a vapour phase, such as reforming. Proposed is a moving bed reactor consisting of a housing having ports for the supply and discharge of product streams, said housing containing annular sections containing a catalyst, and a perforated centrepipe, the sections being funnel-shaped in the lower part and being connected to one another by a catalyst transfer device, wherein the catalyst transfer device is in the form of an annular channel coaxial with the centrepipe and having a diameter that is less than the diameter of a section, the centrepipe is closed off at the end of each section by a gas impermeable barrier, and the sections have gas permeable side walls along which an annular gap is formed between the wall of the section and the wall of the housing, said gap being in communication with the ports for the supply and discharge of product streams. The advantages of the claimed reactor are the possibility of evenly transferring the catalyst from one section to another, and of preventing stagnation zones in the region of the transfer device, which makes it possible to improve the efficiency of the process.

Classes IPC  ?

• B01J 8/12 - Procédés chimiques ou physiques en général, conduits en présence de fluides et de particules solidesAppareillage pour de tels procédés avec des particules mobiles se déplaçant par gravité en un flux descendant
• C10G 35/10 - Réformage catalytique avec des catalyseurs mobiles

Abrégé

A plant relates to the field of petrochemistry, specifically to apparatuses for continuously regenerating a catalyst in an oxygen-containing gas for a reforming process. A device is proposed for regenerating a reforming catalyst, comprising a catalyst hopper which is connected to a reforming reactor, a regeneration column connected to the catalyst hopper, a catalyst regeneration and drying unit, a system for preparing gases and pipelines, characterised in that in the lower part of the column there is an assembly for mixing a carbided catalyst and a regenerating gas, designed such they can be transported co-directionally into a regeneration zone, the hopper for the carbided catalyst and the system for preparing regenerating gas being connected by pipelines to the lower part of the regeneration column, and the catalyst regeneration and drying unit being connected to the upper part of the column via a gas separation unit, which is connected to a system for preparing gas. Testing has shown that when the claimed solution is used, the regeneration time is substantially reduced and is in the range of from several seconds to several minutes according to the content of carbon and its surface area, while there is hardly any destruction or agglomeration of catalyst granules.

Classes IPC  ?

• C10G 35/10 - Réformage catalytique avec des catalyseurs mobiles
• B01J 8/08 - Procédés chimiques ou physiques en général, conduits en présence de fluides et de particules solidesAppareillage pour de tels procédés avec des particules mobiles
• B01J 38/10 - Traitement avec un gaz ou une vapeurTraitement avec des liquides vaporisables au contact du catalyseur épuisé avec de l'hydrogène élémentaire