Compressor and other transformations broke the bottleneck Huadian CFB unit won the first prize in the country

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 remarkable 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 growing expertise and commitment to excellence in circulating fluidized bed (CFB) technology. CFB boilers are considered a green and environmentally friendly technology that is strongly supported by the government. They offer significant advantages such as high desulfurization efficiency, excellent environmental benefits, flexibility in coal type usage, and a wide load regulation range. These units represent the future direction of the power industry, promoting clean and sustainable development. However, they also come with technical challenges, including issues like severe wear on boiler components, which have long been a concern for both domestic and international manufacturers. To overcome these technical barriers, Zibo Thermal Power has actively collaborated with prestigious institutions such as Tsinghua University, Zhejiang University, and the Shandong Electric Power Research Institute. In addition, partnerships with Harbin Boiler Plant and other key players have enabled comprehensive analysis of the wear mechanisms in CFB boilers. Based on this research, the company established a clear technical control strategy: optimizing operational measures to reduce wear, modifying design structures to prevent damage, enhancing metal hardness to improve resistance, and strictly controlling maintenance quality to minimize human error. As part of its efforts, the company implemented 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 initiatives have significantly reduced incidents of boiler wear, bursting, and shutdowns caused by poor slagging. In addition to these structural improvements, the company has also focused on refining operational adjustments. For example, the #3 unit previously experienced unstable pressure during sliding pressure operations. To address this, 71 different operating conditions were tested to determine the optimal main steam pressure under varying loads. This effort led to the successful continuous safe operation of the #3 unit, setting a new daily record and elevating the company’s CFB unit management standards to a national leadership level.

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