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简述了移动床生物膜反应器的工艺原理和特点,详细介绍了国内外移动床生物膜反应器的研究现状,最后提出移动床生物膜反应器在实际工程应用和理论研究中的发展趋势。 相似文献
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《化学工业与工程技术》2016,(3):16-23
介绍了移动床反应器的反应过程、类别及特点。重点阐述了移动床反应器在催化重整、汽油脱硫、重油轻质化等石油加工领域,煤炭裂解、煤炭气化等煤炭加工过程,生物质气化和生物质裂解等生物质利用过程,以及在固体有机废物处理、共气化处理过程等技术领域的应用研究进展,并对移动床反应器的未来发展趋势进行了展望。移动床反应器型式不会淡出历史舞台,而会结合其自身的特点不断得到发展和应用。 相似文献
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移动床生物膜反应器脱氮除磷技术 总被引:10,自引:0,他引:10
本文简要介绍了移动床生物膜反应器的特点,总结了移动床生物膜反应器脱氮和除磷的影响因素,指出序批式的运行方式可以同时达到脱氮和除磷的效果。 相似文献
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简述了移动床生物膜反应器的工艺原理和特点,详细介绍了国内外移动床生物膜反应器在生活污水、工业废水和生物脱氮方面的研究现状。通过比较不同生物膜法对焦化废水的处理效果,指出移动床生物膜反应器是一种经济、高效的焦化废水处理方法,最后提出移动床生物膜反应器在实际工程应用和理论研究中的发展趋势。 相似文献
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模拟移动床吸附分离技术及其在分离果糖中的应用 总被引:1,自引:0,他引:1
一、前言 模拟移动床吸附分离技术是一种高效、先进的分离技术,它是由液相色谱技术发展而来的,它不仅最初已成功地应用于石油化学工业,即分离正构烷烃、对二甲苯等,而且用于从果葡糖中分离高纯果糖。目前,正在不断开发新的应用领域。 本文介绍它的原理及特点,以用于制取高纯果糖为例,说明由试验室开发至工业化所需进行的工作。 相似文献
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采用脉冲氦气体示踪技术研究了柱形和锥形移动床中气相的扩散特性,并与实验结果进行对比. 结果表明,在主体流动区(0.11 0.89),柱形床会出现向下窜气的现象,而锥形床中向下窜气量降低40%~50%,气相径向流动更趋近平推流. 根据径向气流在柱形和锥形移动床内的流动特点,用实验数据回归了气体浓度分布的无量纲经验关联式,计算值与实验值吻合较好. 相似文献
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气体通过颗粒移动床除尘器压降的计算 总被引:4,自引:0,他引:4
本文在实验室装置上对气体通过颗粒移动床的压降进行了系统研究,包括固定床与移动床的压降对比、床层高度与床层厚度之比、砂层移动速度、颗粒直径以及床层侧面结构尺寸对气体通过床层压降的影响。 相似文献
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1 INTRODUCTIONMany different types of reactors,for example,fixed bed,moving bed,fluidized bed and spoutedbed,have been used in industrial production and laboratory in research studies.Althougheach of these coal gasifiers has its own specific advantages,there exists,generally speaking,certainwaste gas in product gas because of the direct burning of coal with oxygen or air to provide heatneeded in the endothermic process of coal gasification in gasifiers.A new type of moving bed 相似文献
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A new gas clean-up process called “integrated sintered metal screen moving granular bed“ (ISMSMGB) for the integrated gasification combined cycle (IGCC) and pressured fluidized bed combustion (PFBC) was developed on the basis of a sintered metal candle filter and a cross-flow moving granular bed filter. This is a combination of the surface and deep bed filtering processes. A set of facilities was established and a series of cold model tests were carried out. The dust removal efficiency and the pressure drop of the filter were measured and analyzed. The results show that this process features the advantages of the moving bed for high capacity as well as high inlet dust load and the surface filter for high efficiency. Meanwhile, the granules moving downward cleans the cake on the screen surface, so that the system is operated at steady state. 相似文献
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Heat transfer between a bed of nickel pellets and a vertical section of electrically heated steel pipe has been measured, with the pellet bed inside the vertical pipe. Most of the data are for a 20.27 cm diameter pipe but some data were also obtained for a 10.23 cm diameter pipe. The effective thermal conductivity of the stationary pellet bed has been estimated approximately from the results of unsteady heating tests. Tests have been carried out with a downwardly moving bed, including the effect of air flowing upwards through the bed. Average values of the pellet‐side heat transfer coefficient are between 72 and 135 W/(m2°C) depending on the mass fluxes of air and pellets, and have been expressed as an empirical correlation. 相似文献
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Hosoo Kim David C. Miller Srinivasarao Modekurti Benjamin Omell Debangsu Bhattacharyya Stephen E. Zitney 《American Institute of Chemical Engineers》2016,62(11):3899-3914
A mathematical model for a moving bed reactor with embedded heat exchanger has been developed for application to solid sorbent‐based capture of carbon dioxide from flue gas emitted by coal‐fired power plants. The reactor model is one‐dimensional, non‐isothermal, and pressure‐driven. The two‐phase (gas and solids) model includes rigorous kinetics and heat and mass transfer between the two phases. Flow characteristics of the gas and solids in the moving bed are obtained by analogy with correlations for fixed and fluidized bed systems. From the steady‐state perspective, this work presents the impact of key design variables that can be used for optimization. From the dynamic perspective, the article shows transient profiles of key outputs that should be taken into account while designing an effective control system. In addition, the article also presents performance of a model predictive controller for the moving bed regenerator under process constraints. © 2016 American Institute of Chemical Engineers AIChE J, 62: 3899–3914, 2016 相似文献
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以C8芳烃混合物的吸附分离过程作为研究对象, 应用多目标教学优化算法(multi-objective teaching-learning-based optimization algorithm, MOTLBO)对模拟移动床多目标优化问题进行求解。采用TMB方法, 建立了模拟移动床模型, 并对两个典型的模拟移动床多目标操作优化问题进行了优化设计。通过与NSGA-Ⅱ算法的比较, 证明了多目标教学优化算法在求解模拟移动床多目标优化问题上的有效性和优势。此外, 还分析了抽出液流量、抽余液流量以及步进时间等对多目标优化非劣解的影响, 优化结果为模拟移动床分离过程的工艺设计和操作提供了依据。 相似文献