Effect of bed characters on the direct synthesis of dimethyldichlorosilane in fluidized bed reactor.

Pan Zhang,Guang H Chen,Wei W Wang,Ji H Duan

doi:10.1038/srep08827

Pan Zhang, Guang H Chen + Show 2 more

Open Access

https://doi.org/10.1038/srep08827

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Abstract

This paper presents the numerical investigation of the effects of the general bed characteristics such as superficial gas velocities, bed temperature, bed heights and particle size, on the direct synthesis in a 3D fluidized bed reactor. A 3D model for the gas flow, heat transfer, and mass transfer was coupled to the direct synthesis reaction mechanism verified in the literature. The model was verified by comparing the simulated reaction rate and dimethyldichlorosilane (M2) selectivity with the experimental data in the open literature and real production data. Computed results indicate that superficial gas velocities, bed temperature, bed heights, and particle size have vital effect on the reaction rates and/or M2 selectivity.

Highlights

This paper presents the numerical investigation of the effects of the general bed characteristics such as superficial gas velocities, bed temperature, bed heights and particle size, on the direct synthesis in a 3D fluidized bed reactor
The main object of the present paper is to investigate the influence of the general bed characteristics on the direct synthesis process in the fluidized bed reactor
It should be concluded that the proposed model is useful for describing the synthesis process of the methylchlorosilae in fluidized bed reactor

Summary

Introduction

This paper presents the numerical investigation of the effects of the general bed characteristics such as superficial gas velocities, bed temperature, bed heights and particle size, on the direct synthesis in a 3D fluidized bed reactor. Computed results indicate that superficial gas velocities, bed temperature, bed heights, and particle size have vital effect on the reaction rates and/or M2 selectivity. One of the most features of the direct synthesis process is the great number of by-products resulting from this reaction. Many fluidized bed characters such as superficial gas velocities, bed temperature, bed heights and particle size, have certainly the vital effect on the various transport processes, and on the direct synthesis process. The characters which influence the transport process, such as the particle size, superficial gas velocity and bed height, were less discussed

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Conclusion