【摘要】：在高溫固定床反應(yīng)器中,對木屑半焦進行高溫水蒸氣氣化制備富氫燃氣。在溫度700~900℃、水蒸氣流量0.11~0.32 g/(min·g)(以焦炭計,下同)條件下,研究了氣化溫度和水蒸氣流量對水蒸氣氣化制備燃氣中的氫氣含量、產(chǎn)氣率、熱值以及燃氣中各組分體積分數(shù)的影響。研究表明:水蒸氣通入過量會造成燃氣熱值的降低;在氣化溫度900℃、水蒸氣流量0.32 g/(min·g)時,燃氣中氫氣達到62.53%,燃氣熱值為8.99 MJ/Nm~3,燃氣產(chǎn)率為2.75 L/g。利用容積反應(yīng)模型和未反應(yīng)收縮核模型擬合試驗數(shù)據(jù)得到了相應(yīng)的動力學參數(shù),發(fā)現(xiàn)未反應(yīng)收縮核模型比容積反應(yīng)模型可以更好的描述木屑半焦的水蒸氣氣化行為,容積反應(yīng)模型所得到活化能為88.67 kJ/(mol·K),指前因子為2 976.55 min~(-1),未反應(yīng)收縮核模型所得活化能為91.78 kJ/(mol·K),指前因子為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，

本文編號：2194344