Modular thermal chemical reaction catalyst and manufacturing method thereof

Abstract

The invention relates to a modular thermal chemical reaction catalyst and a manufacturing method thereof. The modular thermal chemical reaction catalyst comprises a shaped skeleton, wherein the interior of the shaped skeleton is provided with a three-dimensional irregular pore channel, which is filled in the whole reaction area in a reactor; preformed catalyst particles, which are filled in the three-dimensional irregular pore channel of the shaped skeleton; and an outer protection layer, which is arranged on the outer wall of the shaped skeleton. According to the invention, the irregular pore channel formed by the shaped skeleton are filled with the catalyst particles, so that compared with a direct packed bed of the catalyst particles, the mass transfer diffusion capability of a reaction medium on a catalyst bed layer is improved, and the pressure drop of the catalyst bed layer is reduced; the heat transfer performance of the catalyst bed layer is improved, the temperature distribution non-uniformity of the catalyst bed layer is reduced, and the thermal chemical reaction performance of the bed layer is improved; uniform distribution of the catalyst in a reaction area is facilitated, and collapse and channeling of a catalyst bed layer are prevented; and meanwhile, the structure form of a catalyst bed layer is convenient to construct, and the filling, unloading or replacing process of the catalyst is simplified.

Description

technical field [0001] The invention relates to the field of thermochemical reaction catalysts, and mainly relates to a modular thermochemical reaction catalyst and a preparation method thereof. Background technique [0002] As one of the main reactor forms for thermochemical reactions, fixed-bed reactors, such as methanol cracking, methane dry-wet reforming, Fischer-Tropsch synthesis reactions, etc., usually fill the granular catalyst directly into the entire reaction tube or reaction chamber. The utilization methods mentioned above have room for improvement in terms of catalyst use effect and loading. [0003] In order to ensure the reaction performance of the fixed-bed reactor, uniform distribution of catalyst space, large specific surface area, good heat and mass transfer capacity, reliable and convenient filling process are required. (1) Catalyst space layout: The catalyst needs to be evenly distributed in the reaction space, so that the reaction medium can fully conta...

AI Technical Summary

Problems solved by technology

The stacking of fine catalyst particles in the fixed bed, on the one hand, causes greater bed resistance; on the one hand, its poor thermal conductivity makes the catalyst and bed temperature distribution uneven, resulting in low catalyst utilization efficiency and easy sintering deactivation; at the same time, the granular Catalyst particles are likely to be worn or even broken during the catalyst loading process, and the operation of replacing the catalyst is more complicated

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