不同工况下喷淋床反应器传热特性的实验研究

IF 1.1 4区 工程技术 Q3 CHEMISTRY, ORGANIC
Hasan A. Abdulwahab, Abbas J. Sultan, Amer A. Abdulrahman, Hasan Sh. Majdi, Haydar A. S. Aljaafari, Zahraa W. Hasan, Laith S. Sabri, Bashar J. Kadhim, Jamal M. Ali, Muthanna H. Al-Dahhan
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引用次数: 0

摘要

喷淋床反应器(sbr)由于其混合和传热能力在化学和生化过程中的有效性而受到高度重视。了解这些反应器中的传热机制是必要的。本文研究了sbr的传热行为,对sbr在运行工况下的性能提升起着重要作用。本研究利用一种技术测量了喷淋床(SB)柱内径向位置(r/ r = 0、±0.28、±0.56和±0.85)和轴向水平(H/D = 0.8、2.1和3.5)不同气体流速(范围为0.32至0.74 m/s)下的换热系数(HTC),以评估局部换热系数(LHTCs)。我们得到的结果揭示了气体的速度,它在反应器中的径向位置,以及它的轴向高度。例如,较高的气体速度导致传热效率,径向位置的变化突出了反应器的形状如何影响传热动力学。值得注意的是,将气体速度从最低提高到测试水平会导致传热系数增加25%。这些发现为改进sbr的设计和性能提供了见解,并在依赖有效传热过程的行业中广泛应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Experimental Investigation of Heat Transfer Behavior in Spouted Bed Reactors under Different Operating Conditions

Experimental Investigation of Heat Transfer Behavior in Spouted Bed Reactors under Different Operating Conditions

Spouted bed reactors (SBRs) are highly valued for their effectiveness in chemical and biochemical processes due to their mixing and heat transfer capabilities. Understanding the heat transfer mechanisms in these reactors is necessary. This research delves into the heat transfer behavior of SBRs, which plays a role in enhancing their performance under operational conditions. The study conducted experiments to measure the heat transfer coefficient (HTC) at varying gas velocities (ranging from 0.32 to 0.74 m/s) at radial positions (r/R = 0, ±0.28, ±0.56, and ±0.85) and axial levels (H/D = 0.8, 2.1, and 3.5) within the spouted bed (SB) column using a technique, for the assessment of local heat transfer coefficients (LHTCs). The results we obtained revealed the velocity of the gas, its radial position in the reactor, and its axial height. For instance, higher gas speeds led to heat transfer efficiency and variations in radial positions highlighted how the reactor’s shape influences heat transfer dynamics. It’s worth noting that increasing the gas speed from the lowest to the level tested resulted in a 25% increase in heat transfer coefficients. These discoveries provide insights for improving the design and performance of SBRs with ranging applications in industries that rely on effective heat transfer processes.

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来源期刊
Petroleum Chemistry
Petroleum Chemistry 工程技术-工程:化工
CiteScore
2.50
自引率
21.40%
发文量
102
审稿时长
6-12 weeks
期刊介绍: Petroleum Chemistry (Neftekhimiya), founded in 1961, offers original papers on and reviews of theoretical and experimental studies concerned with current problems of petroleum chemistry and processing such as chemical composition of crude oils and natural gas liquids; petroleum refining (cracking, hydrocracking, and catalytic reforming); catalysts for petrochemical processes (hydrogenation, isomerization, oxidation, hydroformylation, etc.); activation and catalytic transformation of hydrocarbons and other components of petroleum, natural gas, and other complex organic mixtures; new petrochemicals including lubricants and additives; environmental problems; and information on scientific meetings relevant to these areas. Petroleum Chemistry publishes articles on these topics from members of the scientific community of the former Soviet Union.
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