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首页> 外文期刊>Fuel >Performance of a Victorian brown coal and iron ore during chemical looping combustion in a 10 kW(th) alternating fluidized bed
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Performance of a Victorian brown coal and iron ore during chemical looping combustion in a 10 kW(th) alternating fluidized bed

机译：维多利亚时代的褐煤和铁矿石在10 kW（th）交替流化床中进行化学循环燃烧期间的性能

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This paper presents the performance of Victorian Yallourn coal during chemical looping combustion with iron ore in a 10 kW(th) alternating fluidized bed reactor. CO2 was used as the gasification agent and fluidization gas. The effect of reaction temperature, fuel type and number of redox cycles were investigated. The NOx emission from the system was determined. The used oxygen carrier particles were characterized using SEM, EDS, XRD, and surface area analyser. It was found that the optimum condition for CO2 yield and carbon conversion was obtained at a temperature of 900 degrees C. Under this condition with the present reactor configuration, the average carbon conversion and CO2 yield over six cycles were found to be 92.2% and 82.9% respectively. Although Yallourn ash has high amounts of iron and silica, no ash deposition was detected on the oxygen carrier particles. The NOx concentration was found to be 25 ppm. Results from the carbon balance showed that about 1% was present in the solid phase; about 6.8% was unaccounted for and possibly elutriated out of the reactor. While favourable results were obtained for this configuration, the use of circulating fluidized bed reactors and an improved cyclone separation system would increase the carbon conversion and CO2 yield. (C) 2016 Elsevier Ltd. All rights reserved.
机译：本文介绍了维多利亚·亚伦（Victorian Yallourn）煤在10 kW（th）交替流化床反应器中与铁矿石进行化学循环燃烧期间的性能。使用CO2作为气化剂和流化气体。研究了反应温度，燃料类型和氧化还原循环次数的影响。确定了系统的NOx排放量。使用SEM，EDS，XRD和表面积分析仪对用过的氧气载体颗粒进行表征。发现在900℃的温度下获得了CO 2产率和碳转化的最佳条件。在这种条件下，采用本反应器配置，六个循环的平均碳转化率和CO 2产率被发现为92.2％和82.9。 ％ 分别。尽管雅洛恩火山灰具有大量的铁和二氧化硅，但在氧载体颗粒上未检测到灰分沉积。发现NOx浓度为25ppm。碳平衡的结果表明，固相中存在约1％的碳。约有6.8％未被确认并可能从反应器中淘出。尽管对于这种构造获得了有利的结果，但是使用循环流化床反应器和改进的旋风分离系统将增加碳转化率和CO 2收率。 （C）2016 Elsevier Ltd.保留所有权利。

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