木屑半焦高温水蒸气气化制备富氢燃气研究
发布时间:2018-08-20 16:58
【摘要】:在高温固定床反应器中,对木屑半焦进行高温水蒸气气化制备富氢燃气。在温度700~900℃、水蒸气流量0.11~0.32 g/(min·g)(以焦炭计,下同)条件下,研究了气化温度和水蒸气流量对水蒸气气化制备燃气中的氢气含量、产气率、热值以及燃气中各组分体积分数的影响。研究表明:水蒸气通入过量会造成燃气热值的降低;在气化温度900℃、水蒸气流量0.32 g/(min·g)时,燃气中氢气达到62.53%,燃气热值为8.99 MJ/Nm~3,燃气产率为2.75 L/g。利用容积反应模型和未反应收缩核模型拟合试验数据得到了相应的动力学参数,发现未反应收缩核模型比容积反应模型可以更好的描述木屑半焦的水蒸气气化行为,容积反应模型所得到活化能为88.67 kJ/(mol·K),指前因子为2 976.55 min~(-1),未反应收缩核模型所得活化能为91.78 kJ/(mol·K),指前因子为2 872.82 min~(-1)。
[Abstract]:Hydrogen rich gas was prepared by steam gasification of sawdust semi-coke in a high temperature fixed bed reactor. The effects of gasification temperature and steam flow rate on the hydrogen content, gas yield, calorific value and integral number of components in steam gasification were studied under the conditions of 700 鈩,
本文编号:2194344
[Abstract]:Hydrogen rich gas was prepared by steam gasification of sawdust semi-coke in a high temperature fixed bed reactor. The effects of gasification temperature and steam flow rate on the hydrogen content, gas yield, calorific value and integral number of components in steam gasification were studied under the conditions of 700 鈩,
本文编号:2194344
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