Hollow porous structure catalyst suitable for gas-solid fluidization system

Abstract

The invention discloses a hollow porous structure catalyst suitable for a gas-solid fluidization system. The interior of a catalyst particle is of a hollow structure and is used for providing a gas storage space; a shell layer of the catalyst particle is of a porous structure and is used for entering and releasing a gas material; pore channels on the shell layer of the catalyst particle have selectivity, and the pore channels are used for selectively storing and releasing a gas-phase material. The structural catalyst particles have gas-phase material storage and release functions, and can store and release reactants at local parts of a reactor in different states, so that the concentration of the reactants is adjusted, and the overall reaction performance of the gas-solid fluidization reactor is improved.

Description

technical field [0001] The invention relates to the adjustment and optimization of catalyst performance in a gas-solid fluidization reactor, in particular to a catalyst with a hollow porous structure suitable for a gas-solid fluidization system, by designing the structure of the catalyst particles and the structure of the pores on the surface of the catalyst particles , realize the ability of catalyst particles to selectively store and release meteorological materials, form a new type of catalyst particles that store gas-phase materials when the gas-phase material concentration is high, and release gas-phase materials when the gas-phase material is poor, and realize the optimization of the overall performance of the reactor. Background technique [0002] Fluidized systems are widely used in many physical and chemical applications such as material preparation, coal combustion, and catalytic reactions, and are a typical multiphase flow system [1] . Gas-solid fluidization refe...

AI Technical Summary

Problems solved by technology

[0017] In order to overcome the problems of performance degradation and operational stability caused by the spatiotemporal inhomogeneous structure formed by gas and particles in traditional gas-solid fluidized reactors, the present invention designs a structured catalyst particle that regulates the storage and release of gas phase materials, through The hollow structure adjusts the capacity of catalyst particles, the storage and release of gas phase materials are realized through the porous shell, and the selectivity of gas phase materials is adjusted through pore structure and surface modification

Images