【摘要】：以松木屑為生物質(zhì)原料,水蒸氣為氣化介質(zhì),使用自制鎳基復合催化劑Ni-CaO,在固定床氣化爐中進行生物質(zhì)催化氣化反應,考察了催化劑用量、氣化溫度和水蒸氣流量對生物質(zhì)水蒸氣氣化制氫特性的影響。結(jié)果表明,當催化劑與原料質(zhì)量比由0增加至1.5時,H_2體積分數(shù)由45.58%增至60.23%,產(chǎn)氫率由38.80g/kg增至93.75g/kg,當催化劑與原料質(zhì)量比為2時,兩者均有增加,但是變化不明顯。溫度從700℃增至750℃時,燃氣中H_2的體積分數(shù)由54.24%增至60.23%,CO_2由21.09%降至13.18%,繼續(xù)升高溫度,H_2的體積分數(shù)和燃氣熱值均逐漸降低,以Ni-CaO為催化劑時750℃是制取富氫燃氣的最佳氣化溫度。當氣化溫度為750℃,催化劑與原料質(zhì)量比為1.5,水蒸氣通入量為0.34g/(min·g)時,H_2體積分數(shù)為60.23%,產(chǎn)氫率為93.75g/kg,燃氣熱值為12.13MJ/m~3。
[Abstract]:Using pine sawdust as biomass raw material and steam as gasification medium, the biomass catalytic gasification reaction was carried out in a fixed bed gasifier using self-made nickel-based composite catalyst Ni-CaO,. The amount of catalyst was investigated. Effects of gasification temperature and steam flow rate on hydrogen production characteristics of biomass steam gasification. The results show that when the mass ratio of catalyst to raw material increases from 0 to 1.5, the volume fraction of Hal _ 2 increases from 45.58% to 60.23%, the hydrogen yield increases from 38.80g/kg to 93.75 g / kg, and when the ratio of catalyst to raw material is 2, both of them increase, but the change is not obvious. When the temperature increases from 700 鈩，

本文編號：2249494