Vertical gas-phase ultra-stable reactor, system and method for preparing gas-phase ultra-stable Y molecular sieve

Abstract

The invention provides a vertical gas-phase ultra-stable reactor, a system and a method for preparing a gas-phase ultra-stable Y molecular sieve, the vertical gas-phase ultra-stable reactor comprises a vertical reactor pipe body, a feed input device, a nozzle, a discharge input device and a distributor, the feed input device, the nozzle and the discharge input device are arranged on the top of the vertical reactor pipe body; the gas inlet is used for receiving a molecular sieve raw material input by the feeding input device and uniformly dispersing the molecular sieve raw material, the at least one silicon tetrachloride gas nozzle is positioned in the vertical reactor pipe body and is connected with a pipeline, and the pipeline penetrates through the gas inlet and is connected with a silicon tetrachloride gas source; the spraying direction of silicon tetrachloride gas flow through the nozzle is opposite to the moving direction of the molecular sieve raw material in the vertical reactor pipe body; and the discharge input device is connected with an outlet of the vertical reactor pipe body and is used for outputting a reaction product.

Description

technical field [0001] The invention provides a structure of a gas-phase ultra-stable reactor that can be used in the gas-phase ultra-stable treatment process of sodium-type faujasite molecular sieve. The gas-phase ultra-stable reactor can be continuously and efficiently prepared with high crystallinity and low The invention relates to a faujasite molecular sieve with unit cell constant characteristics, which belongs to the technical field of preparation of molecular sieve catalysts. Background technique [0002] Y-type molecular sieve is an important component of many catalytic processes and adsorption processes, especially in catalytic cracking catalysts, Y-type molecular sieve is the main active component, which plays a key role in the process of converting macromolecules into gasoline and diesel molecules. However, Y-type molecular sieves cannot be directly used in catalytic cracking catalysts, because their silicon-aluminum ratio is relatively low, and the structure is ...

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Problems solved by technology

However, because the molecular sieve solid particles are easy to agglomerate at high temperature, the molecular sieve inside the block cannot fully contact or cannot contact with silicon tetrachloride gas, the ultra-stable effect is not good, the utilization rate of silicon tetrachloride is low and the agglomerates adhere on the reactor wall, causing the product shown and requiring cleaning

Moreover, the solid particles in the solid particle bed are static and cannot move, and the mass and heat transfer performance is poor. The reaction is an exothermic reaction, and the heat is not easy to diffuse, and it is easy to generate local overheating, resulting in a large reaction temperature in the fixed bed. Gradient, is the inhomogeneous response

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