Study on Combustion Adjustment Characteristics of 50MW CFB Biomass-Fired Boiler in Zhanjiang Biomass Power Plant

Circulating Fluidized Bed (CFB) biomass-fired technology is emerging biomass utilization technology for its advantages of wide adaptability of fuels, stable combustion, low-pollutants emission, and high boiler efficiency. This paper first makes literature survey of on-site combustion adjustment and performance tests and analyzes main influenced factors on combustion adjustment for CFB biomass-fired boiler, including unit load, bed temperature, bed pressure, fuel characteristics, primary air, secondary air, air ratio, circulating ash. Then combustion adjustment characteristics are studied on the largest-scale biomass-fired power project in China - 2×50MW CFB biomass-fired power plant in Zhanjiang by Guangdong Yudean Group. Main influenced factors and principle problems of combustion adjustment tests such as unit load, bed temperature, fuel deflagration, oxygen content, and exhaust gas temperature are tested and analyzed. Optimized operation suggestions are proposed according to the combustion adjustment tests.