Modeling the hydrochlorination reaction in a laboratory-scale fluidized bed reactor

Colomb, Matthias; Паланки, Сринивас; Sylvester, N. D.

doi:10.1016/j.powtec.2015.12.044

Cited by 9 publications

(4 citation statements)

References 3 publications

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“…Consequently, this leads to the high version rate of SiCl4. By incorporating HCl into the hydrogenation process of chemical performance can be further enhanced, as noted in references [27,28]. hancement results in a predicted SiCl4 conversion rate of 28.97% when the rea the bubbling fluidization state.…”

Section: 11 X For Peer Reviewmentioning

confidence: 99%

“…Nevertheless, there have been limited numerical investigations into the fluidization behavior associated with SiCl 4 hydrochlorination for the production of SiHCl 3 . Colomb et al [27,28] developed a fluidized bed model based on the Kunii-Levenspiel fluidization framework, which can accurately predict the reaction performance of the hydrochlorination process. However, the effects of the fluidization behavior on the chemical reaction performance were ignored in the above-proposed model.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Simulation of Fluidization Behavior and Chemical Performance for Hydrochlorination of Silicon Tetrachloride in a Fluidized Bed Reactor

Guo,

Dai,

et al. 2023

Processes

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Exploring the fluidization behaviors and chemical performance in silicon tetrachloride (SiCl4) hydrochlorination processes within a fluidized bed reactor (FBR) poses significant challenges. In this study, we developed an Eulerian-granular model (EGM) by integrating the Eulerian–Eulerian two-fluid model with the kinetic theory of granular flow (KTGF). The effect of fluidization velocities on the flow regime, heat transfer, and chemical reaction performance were investigated. The applicability of the simulation method and the validity of the model were confirmed through comprehensive comparisons, including the simulated values of the maximum bed expansion height (Hmax) with theoretical values derived from empirical formulas and the simulated gas temperature profile with Hsu’s experimental data. The results indicate that the present EGM can be feasible to describe the variation of the flow regime within the FBR. An increase in bed voidage over time, coinciding with transitions in the flow regime, can be observed. Particularly noteworthy was the attainment of a more uniform distribution of SiCl4 under the bubbling fluidization state. Furthermore, the FBR possess high heat transfer characteristics, and the reaction gas can reach the set temperature of the bed after entering a small distance (about 10 mm). The presence of circulating bubbles within the FBR enhances the mixing uniformity of the SiCl4 reaction gas and silicon particles, particularly in the central and upper regions of the bed under the bubbling fluidization state. As a result, the predicted highest concentration of SiHCl3 was 13.08% and the conversion rate of SiCl4 was 28.97% under the bubbling fluidization state. Our results can provide a theoretical basis for further understanding of the hydrochlorination process of SiCl4 within the FBR.

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Section: 11 X For Peer Reviewmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Fluidization Behavior and Chemical Performance for Hydrochlorination of Silicon Tetrachloride in a Fluidized Bed Reactor

Guo,

Dai,

et al. 2023

Processes

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“…Hydrochlorination reactor operation was simulated on the basis of laboratory tests [30], the hydrodynamics of the occurring processes being interpreted adequately well by the Kunii and Levenspiel model.…”

Section: Production Of Trichlorosilane By Silicon Hydrochlorination (Hc)mentioning

confidence: 99%

Methods of trichlorosilane synthesis for polycrystalline silicon production. Part 2: Hydrochlorination and redistribution

Jarkin¹,

Kisarin²,

Kritskaya³

2021

MoEM

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Novel technical solutions and ideas for increasing the yield of solar and semiconductor grade polycrystalline silicon processes have been analyzed. The predominant polycrystalline silicon technology is currently still the Siemens process including the conversion of technical grade silicon (synthesized by carbon-thermal reduction of quartzites) to trichlorosilane followed by rectification and hydrogen reduction. The cost of product silicon can be cut down by reducing the trichlorosilane synthesis costs through process and equipment improvement. Advantages, drawbacks and production cost reduction methods have been considered with respect to four common trichlorosilane synthesis processes: hydrogen chloride exposure of technical grade silicon (direct chlorination, DC), homogeneous hydration of tetrachlorosilane (conversion), tetrachlorosilane and hydrogen exposure of silicon (hydro chlorination silicon, HC), and catalyzed tetrachlorosilane and dichlorosilane reaction (redistribution of anti-disproportioning reaction). These processes remain in use and are permanently improved. Catalytic processes play an important role on silicon surface, and understanding their mechanisms can help find novel applications and obtain new results. It has been noted that indispensable components of various equipment and process designs are recycling steps and combined processes including active distillation. They provide for the most complete utilization of raw trichlorosilane, increase the process yield and cut down silicon cost.

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“…В статье [6] описана модель псевдоожиженного слоя, разработанная с использованием схемы псевдоожижения Кунии-Левеншпиля. Прогностические возможности этой модели были проверены на лабораторных экспериментальных данных из литературы.…”

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Программный Комплекс Моделирования Реактора Гидрохлорирования Кремния

Глушков¹,

Glushkov²,

Чистякова³

et al. 2022

ППС

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Modeling the hydrochlorination reaction in a laboratory-scale fluidized bed reactor

Cited by 9 publications

References 3 publications

Numerical Simulation of Fluidization Behavior and Chemical Performance for Hydrochlorination of Silicon Tetrachloride in a Fluidized Bed Reactor

Numerical Simulation of Fluidization Behavior and Chemical Performance for Hydrochlorination of Silicon Tetrachloride in a Fluidized Bed Reactor

Methods of trichlorosilane synthesis for polycrystalline silicon production. Part 2: Hydrochlorination and redistribution

Программный Комплекс Моделирования Реактора Гидрохлорирования Кремния

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