On December 15th, during the annual meeting of the "National Power Industry CFB Unit Technical Exchange Service Cooperation Network" held in Haikou, Huadian Zibo Thermal Power Co., Ltd. made a significant achievement. The #3 unit of the company won the first prize in the "National CFB Boiler 135-150MW Heating Unit Competition," while the #4 crew secured the third prize. This recognition highlights the company's outstanding performance and technical capabilities in the field of circulating fluidized bed (CFB) boiler technology.
CFB units are considered environmentally friendly power generation systems that are strongly supported by the government. They offer numerous advantages, including high desulfurization efficiency, excellent environmental benefits, flexibility in coal type adaptability, and a wide load regulation range. As a result, they represent a key direction for the future development of the power industry, especially in terms of clean energy and sustainable growth. However, despite these benefits, CFB technology still faces challenges such as incomplete technical maturity, severe wear on boiler components, and other operational issues that have long been problematic for manufacturers both domestically and internationally.
To overcome these technical barriers, Zibo Thermal Power has taken proactive steps in recent years. The company has collaborated with prestigious institutions such as Tsinghua University, Zhejiang University, and the Shandong Electric Power Research Institute, as well as Harbin Boiler Plant. Together, they have conducted comprehensive analyses of the wear mechanisms in CFB boilers and developed a multi-pronged approach to address the issue. This includes optimizing operational parameters to reduce wear, modifying structural designs to prevent damage, enhancing metal hardness to improve resistance, and implementing strict maintenance protocols to avoid human-induced wear.
In addition, the company has carried out 16 major technical renovation projects, including improvements to the slag cooler system, the economizer and reheater, furnace anti-wear upgrades, wet ash removal transformation, and compressor optimization. These efforts have significantly reduced boiler wear, prevented incidents such as slagging-related shutdowns, and improved overall reliability.
Furthermore, the company has focused on optimizing operational procedures. For example, in addressing the issue of unstable pressure operation in the #3 unit, 71 different operating conditions were tested to identify the optimal main steam pressure under varying loads. As a result, the #3 unit achieved continuous safe operation and set a new daily record, showcasing the company’s leadership in CFB unit management across the country.
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