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首页> 外文期刊>Experimental Thermal and Fluid Science: International Journal of Experimental Heat Transfer, Thermodynamics, and Fluid Mechanics >Design assessment of a 150 kWt CFBC Test Unit
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Design assessment of a 150 kWt CFBC Test Unit

机译：150 kWt CFBC测试装置的设计评估

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摘要

For clean and efficient energy generation from coal, the most suitable technology known to date is ‘Fluidized Bed Combustion’ technology. Applications of circulating fluidized bed (CFB) combustion technology have been steadily increasing in both capacity and number over the past decade. Designs of these units have been based on the combustion tests carried out in pilot scale facilities to determine the combustion and desulfurization characteristics of coal and limestone reserves in CFB conditions. Similarly, utilization of Turkish lignites in CFB boilers necessitates adaptation of CFB combustion technology to these resources. However, the design of these test units are not based on firing coals with high ash, volatile matter and sulfur contents like Turkish lignites. For this purpose, a 150 kWt CFB combustor test unit is designed and constructed in Chemical Engineering Department of Middle East Technical University, based on the extensive experience acquired at the existing 0.3 MWt Bubbling Atmospheric Fluidized Bed Combustor (AFBC) Test Rig. Following the commissioning tests, a combustion test is carried out for investigation of combustion characteristics of can lignite in CFB conditions and for assessment of the design of test unit. Comparison of the design outputs with experimental results reveals that most of the predictions and assumptions have acceptable agreement with the operating conditions. In conclusion, the performance of 150 kWt CFBC Test Unit is found to be satisfactory to be utilized for the long term research studies on combustion and desulfurization characteristics of indigenous lignite reserves in circulating fluidized bed combustors.
机译：为了从煤炭中产生清洁高效的能源，迄今为止，最合适的技术是“流化床燃烧”技术。在过去的十年中，循环流化床（CFB）燃烧技术的应用在容量和数量上都在稳步增长。这些单元的设计基于中试规模设施中进行的燃烧测试，以确定CFB条件下煤和石灰石储量的燃烧和脱硫特性。同样，在CFB锅炉中利用土耳其褐煤必须使CFB燃烧技术适应这些资源。但是，这些测试装置的设计并非基于像土耳其褐煤那样燃烧高灰分，挥发性物质和硫含量的煤。为此，在现有的0.3 MWt鼓泡式大气流化床燃烧器（AFBC）试验装置上获得了广泛的经验后，由中东技术大学化学工程系设计和建造了一个150 kWt的CFB燃烧器试验装置。在调试测试之后，进行燃烧测试，以研究CFB条件下褐煤的燃烧特性，并评估测试单元的设计。设计输出与实验结果的比较表明，大多数预测和假设与操作条件具有可接受的一致性。总之，发现150 kWt CFBC测试装置的性能令人满意，可用于循环流化床燃烧器中本地褐煤储量燃烧和脱硫特性的长期研究。

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