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首页> 外文会议>Asia's Largest Power Generation Conference and Exhibition Vol.2, Sep 22-24, 1999, Singapore >IR-CFB REPOWERING: A COST-EFFECTIVE OPTION FOR OLDER PC-FIRED BOILERS
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IR-CFB REPOWERING: A COST-EFFECTIVE OPTION FOR OLDER PC-FIRED BOILERS

机译：更换IR-CFB：旧PC锅炉的一种经济有效的选择

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摘要

Worldwide, many older Pulverized Coal (PC) fired boilers (25-35 years) are in operation. Performance of these boilers deteriorates over time due to poor fuel quality. Some of the units are derated because of the varying fuel conditions (such as moisture, ash, sulfur and heating value), pulverizer limitations, erosion related issues, and environmental considerations. Adding flue gas desulfurization (FGD) system to the existing PC-fired boilers will address only the environmental aspects. Whereas, Internal Recirculation Circulating Fluidized Bed (IR-CFB) repowering will address fuel related issues as well as current emission requirements and has the potential to extend the life of an older plant for another 20-25 years. B&W has done extensive repowering feasibility studies of various PC-fired boilers for customers in the USA, China, India, Ukraine and Thailand. These studies clearly show that IR-CFB repowering is an economically viable option to utilize existing fuel or low grade fuel, reduce emissions, eliminate high maintenance pulverizers and reduce auxiliary support fuel (oil/gas) consumption. This paper presents B&W IR-CFB boiler repowering findings for selected projects including design and performance summaries, PC vs. CFB comparison, emission performance, and technical and economic benefits.
机译：在世界范围内，许多较旧的粉煤（PC）燃烧锅炉（25-35年）正在运行。这些锅炉的性能由于燃油质量差而随时间恶化。由于燃料条件的变化（例如水分，灰分，硫和热值），粉碎机的局限性，与腐蚀有关的问题以及环境方面的考虑，某些机组已被降额使用。在现有的以PC为燃料的锅炉中增加烟气脱硫（FGD）系统只会解决环境方面的问题。鉴于内部循环循环流化床（IR-CFB）的重新供电将解决与燃料有关的问题以及当前的排放要求，并且有可能将老设备的寿命再延长20-25年。 B＆W已为美国，中国，印度，乌克兰和泰国的客户对各种PC燃烧锅炉进行了广泛的供电改造可行性研究。这些研究清楚地表明，对IR-CFB进行换能是一种经济可行的选择，可以利用现有燃料或低级燃料，减少排放，消除高维护量的粉碎机并减少辅助燃料（油/气）的消耗。本文介绍了选定项目的B＆W IR-CFB锅炉再发电结果，包括设计和性能摘要，PC与CFB的比较，排放性能以及技术和经济效益。

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