摘  要:在掌握燃燒和流態化理論的前提下，閱讀相關文獻，收集和綜述循環流化床富氧燃燒的最新研究結論和發展趨勢；了解鈣基脫硫劑在循環流化床富氧燃燒條件下的脫硫機理和存在問題，探明其磨損機理；同時對循環流化床富氧氣氛下石灰石脫硫的磨損進行試驗研究，通過實驗室規模下流化床燃燒系統中石灰石連續破碎測試實驗裝置、固體燃料燃燒試驗系統等，了解影響固硫效果因素，如：石灰石粒度、流化床砂質種類、燃料的種類、燃料的粗細、燃燒溫度、時間、空氣表面流速等。

　　　通過通過小型流化床實驗，研究不同氣氛下固硫劑磨損的差別，在常壓循環流化床上，對鈣基吸收劑的反應特性和磨損性能進行研究，考察反應時間、流化數、反應溫度、顆粒粒徑、煅燒溫度對吸收劑磨損性能的影響以及吸收劑的磨損率變化情況。結果表明，反應溫度對吸收劑磨損的影響最大，流化時間等影響較小，同時吸收劑粒徑也是磨損性能變化的重大因素，吸收劑在煅燒過程中受熱應力和CO2析出時的內壓力作用是顆粒發生破碎的主要原因。

關鍵詞：循環流化床富氧燃燒  鈣基脫硫劑   破碎  磨損

Abstract:Under the premise of mastering theories of combustion and fluidization, read the relevant literature to collect the latest Attrition/fragmentation findings of limestone under simulated ?uidized bed oxy?ring conditions. Understand the mechanism and search relative problems of calcium-based sorbent oxygen in circulating fluidized bed combustion and desulfurization. Meanwhile, take the reaserch of attrition and fragmentation of limestone during the ?uidized bed (FB) oxyfuel combustion of sulfur-bearing fuels. With laboratory scale tests under the continuous limestone crushing test in fluidized bed combustion system or solid fuel combustion test systems, to know the relative factors which may affect limestone sulfation . such as Limestone particle size, fluidized bed sand type, fuel type, fuel physical size, combustion temperature, combustion time, surface air flow rate and etc. 

　　　Take the study on the difference of limestone attrition and fragmentation under different atmosphere with laboratory scale CFB oxyfuel tests. The effects of reaction time, fluidization number, particle size, calcination temperature on the sorbent attrition were investigated and know the changes of sorbent attrition rate. The results show that reaction temperature presents the greatest effect on sorbent attrition while the fluidization number and reaction time affect less. Otherwise, the particle size is important factor. The thermal shock and internal pressure due to CO2 releasing during the calcination were the main cause for the sorbent attriton. 

Keywords: oxygen circulating fluidized bed combustion; calcium-based sorbent ;attrition;fragmentation