Realization and Control of Multiple Temperature Zones in Liquid-Containing Gas-Solid Fluidized Bed Reactor
Realization and Control of Multiple Temperature Zones in Liquid-Containing Gas-Solid Fluidized Bed Reactor
复制标题
含液气固流化床反应器多温区的实现与控制
DOI：
10.1002/aic.15157
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发表时间：
2016
期刊：
影响因子：
3.7
通讯作者：
Yongrong Yang
中科院分区：
文献类型：
--
作者：
Yefeng Zhou;Qiang Shi;Zhengliang Huang;Zuwei Liao;Jingdai Wang;Yongrong Yang
流化床反应器（FBR）已经被开发用于为各种工业过程建立多个温度区。为了克服这些缺点，本文提出了将液体分别喷入底部和上部区域，实现多温区FBR（MTZFBR）。温度，压力和声发射技术被应用到充分表征液体相互作用和流体力学。与底部喷液方式相比，上部喷液方式具有更高的温差（ΔT）和更好的流化稳定性，因此被选择用于进一步的控制研究。系统地研究了液体流量、静态床层高度和入口气体温度对MTZFBR的影响。结果表明，增加液体蒸发行为或减少液桥行为均能提高ΔT和流化稳定性，反之亦然。G-L-S流化模式主要取决于液相行为和流化稳定性，因此稳定MTZFBR可视为两种不同G-L-S流化模式的共存模式。© 2016美国化学工程师学会AIChE J，62：1454-1466，2016
Fluidized bed reactors (FBRs) have been developed to establish multiple temperature zones for various industrial processes. To overcome the common weakness, this work proposed to spray liquid into bottom and upper zones, respectively, to realize multiple temperature zones FBR (MTZFBR). Temperature, pressure, and acoustic emission techniques were applied to fully characterize liquid interaction and hydrodynamics. Compared with the bottom liquid‐spraying approach, the upper liquid‐spraying approach showed higher temperature difference (ΔT) and better fluidization stability, thus was selected for further control studies. Effects of liquid flow rate, static bed height, and inlet gas temperature on MTZFBR were studied systematically. The results showed that increasing liquid evaporation behavior or decreasing liquid bridge behavior enhance ΔT and fluidization stability and vice versa. G–L–S fluidization pattern depended mostly on the liquid behaviors and fluidization stability, and thus the stabilized MTZFBR could be regarded as a coexisted mode of two distinctive G–L–S fluidization patterns. © 2016 American Institute of Chemical EngineersAIChE J, 62: 1454–1466, 2016