【摘要】 利用一Φ４８ｍｍ的流化床反应器在９００～１１００℃、气体流量１７０～３６０ｍＬ／ｍｉｎ的条件下进行了半焦（飞灰）的ＣＯ_２气化反应研究。实验结果表明：在操作条件内，半焦的气化速率是受表面反应速率和传质速率共同控制的，且在１０００～１０５０℃之间存在一临界温度，其前后的反应机理存在差异。同时使用流动模型对结果进行了模拟计算，得出反应活化能分别为８０ｋＪ／ｍｏｌ和１５５ｋＪ／ｍｏｌ。更多还原

【Abstract】 The char （fly ash） was gasified in a Φ-48mm fluidized bed with CO₂ over the temperature range of 900￣ 1100℃ and gas flow rate range of 170￣360mL/min. The results show that the rate of gasification was controlled by kinetic and transfer rate, and there is a critical temperature between 1000￣ 1050℃. Three kinds of models were used to calculate the experiment results and an activation energy of 80 and 155kJ/mol was deduced.更多还原