China has set a new global standard in power generation with the successful trial operation of its 660 MW supercritical circulating fluidized bed (CFB) steam generator. This cutting-edge technology is the first of its kind, achieving unprecedented levels of performance and efficiency in the power industry.
The 660 MW CFB steam generator operates at a steam pressure of 29.3 MPa and a temperature of 1121°F, surpassing previous benchmarks for both CFB performance and efficiency. Designed as an ultra-supercritical unit, it boasts the highest specifications and largest single-unit capacity ever seen in CFB technology.
CFB boilers are known for their high efficiency, low emissions, and versatility in fuel types, making them increasingly vital to the global energy landscape. Over the years, CFB technology has evolved significantly, with the capacity of CFB boilers rising from 95.8 MW to 600 MW. Alongside this growth, steam parameters have advanced from subcritical to supercritical levels, further enhancing performance.
The new 660 MW unit is equipped with a wide-load, high-efficiency generator that features low-temperature rise, minimal vibration, and exceptional output. Its design allows for superior performance under demanding conditions, including deep peak shaving, leading phase operation, and negative-sequence operations.
A key feature of the new CFB generator is its 95 percent desulfurization efficiency, ensuring ultra-low emissions and marking a major step forward in cleaner power generation. The technology’s ability to convert low-calorific coal and inferior fuels, such as coal slime and gangue, into energy is a significant breakthrough.
The project is being developed in two phases, with the first phase expected to convert approximately two million tons of low-grade coal and other fuels annually once fully operational. This achievement not only underscores China’s leadership in the field of sustainable energy but also signals a new era for large-scale, environmentally-friendly power generation using CFB technology.
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