滴流床反应器化学过程强化势计算分析的欧拉-欧拉数值模型的发展

IF 0.4 Q4 CHEMISTRY, ANALYTICAL Pakistan Journal of Analytical & Environmental Chemistry Pub Date : 2020-12-24 DOI:10.21743/pjaec/2020.12.40
S. K. Suri
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引用次数: 0

摘要

计算流体力学技术在评价反应堆性能方面起着至关重要的作用。滴流床反应器的瞬态性能很容易从其三相流动状态进行监测。本文针对滴流床反应器系统边界的形成进行了研究,给出了该系统的综合方法学和优化解。计算流体力学技术最重要的意义是观察实验结果的有效性和有效意义。通过引入质量守恒方程和能量守恒方程,建立了催化剂床层的动态和稳态模型。欧拉-欧拉多相建模技术是从相互作用动量模型出发,针对加氢脱硫(HDS)和加氢脱芳(HDA)化学过程变化设计的。在滴流床反应器中,通过固床条件与传质的相互作用,观察了床层孔隙度对HDS反应过程的影响。计算流体力学程序的综合结果表明,润湿效率随硫化氢浓度和HDS转化率的增加而增加。在半湿床和湿床条件下,HDS反应的转化率随硫化氢浓度的增加而降低。另一方面,H2S体积浓度为0 ~ 8%时,HDS转化率从72%下降到63.75%。这些观察结果还表明,计算流体力学提供了滴流床反应器中液体流动的随机可及性。结果还表明,饱和液相存在周期性变化。靠近城墙的地区灌溉较少。这些特性是可以改变的,对反应器的性能有影响。因此,本综述研究呈现出前所未有的高准确性结果。
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Development of Numerical Eulerian-Eulerian Model for Computational Analysis of Potential in Chemical Process Intensification from Trickle Bed Reactors
The computational fluid dynamics techniques keep a paramount role by evaluating a reactor performance. The transitory performance of a Trickle bed reactor is readily monitored from its three phase’s flow conditions. This research review study corresponds towards the formation of boundaries in this Trickle bed reactors system to designate its comprehensive methodology with an optimized solution. The main paramount significance of computational fluid dynamics techniques is to observe the validity and an effective significance of the experimental result. The catalyst bed is modelled with the help of dynamic and steady state models by introducing mass and energy conservation equations. The Eulerian-Eulerian multiphase modelling technique is designed for hydro-desulfurization (HDS) and hydro-dearomatization (HDA) chemical process change from interactive momentum models. The effect in bed porosity on the HDS reaction process is observed from interactive mass transfer with solid bed condition in Trickle bed reactor. The congregated results from computational fluid dynamics codes show that wetting efficiency increases with increase in both hydrogen sulphide concentration and HDS conversion. The conversion of HDS reaction decreases with increase in hydrogen disulphide (H2S) concentration at both partially wetted and wetted bed conditions. On the other hand, there is small decrease in HDS conversion from 72% to 63.75% at H2S volumetric concentration of 0 to 8%. These observations also indicate that computational fluid dynamics provides random accessibility of liquid flow in Trickle bed reactor. There results also reveal that there is periodic variation in saturated liquid phase. The regions which are close to its wall are less irrigated. These characteristics can be changed and have effect on the reactor performance. Hence, the present review study presents the unprecedented results with high accuracy.
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来源期刊
CiteScore
1.10
自引率
16.70%
发文量
16
审稿时长
15 weeks
期刊最新文献
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