Large CFB Boilers In Inferior Anthracite Application Research

Along with the rapid development of Chinese economy and growing demand for electricity and the shortage of energy supply, formed sharp contradiction, At the same time, our country in thermal power generation, coal-fired steam turbine account for the vast majority proportion, coal, high points in water, environment pollution is serious, at present China has become one of major problems of sustainable development, it is necessary to adopt advanced technical transform the existing power and electric power construction of new.Fujian anthracite as a representative of the inferior anthracite structure compact, responsiveness, carbonation degree is high, low and high calorific value of volatile nature, with high temperature, the fire and burn with our other bituminous coal, the most difficult or anthracite compared with fire and burn, easy to use, in burning slagging exist in difficulties.To realize the sustainable development of strategic objectives, clean coal technology is the future trend of China. Circulating fluidized bed boiler (CFB) is the most widely used, the most mature clean combustion technology. It has strong adaptability and coal desulfurization, furnace with lower cost, and strong adaptability to load the advantages of using inferior anthracite furnace type selection.Based on Shanghai boiler of power production MeiXian 440t two hCFB/as a representative of the boiler burning anthracite inferior unit application practice and summarizes the research for example, through the analysis of the current situation and policy of energy, introduces the basic principle of circulating fluidized bed, performance characteristics, main technical schools and the development of the significance and prospect.Through the production site in detail the first-hand data using inferior anthracite of two large CFB boiler operation conditions, large CFB boilers in proved the feasibility of application of inferior anthracite, also puts forward the existing problems. Through slag discharge difficult, heating and wear apc rate higher analysis of main problems, and puts forward the improvement measures of selection, and introduces the cold dregs device modification, water-cooled wall coating and fan inverter related technical project implementation process and the problems encountered in the process of transformation, through the comparison operation after completion of the effect that is improved.Finally, the article summarized, and the prospect of research work on. Through the analysis of the relevant units applied research and improvement for large CFB technology and inferior anthracite development accumulate beneficial experience for similar projects in the future, and to offer reference and project.