松木屑催化气化制取富氢燃气

发布时间：2018-09-19 07:49

【摘要】：以松木屑为生物质原料,水蒸气为气化介质,使用自制镍基复合催化剂Ni-CaO,在固定床气化炉中进行生物质催化气化反应,考察了催化剂用量、气化温度和水蒸气流量对生物质水蒸气气化制氢特性的影响。结果表明,当催化剂与原料质量比由0增加至1.5时,H_2体积分数由45.58%增至60.23%,产氢率由38.80g/kg增至93.75g/kg,当催化剂与原料质量比为2时,两者均有增加,但是变化不明显。温度从700℃增至750℃时,燃气中H_2的体积分数由54.24%增至60.23%,CO_2由21.09%降至13.18%,继续升高温度,H_2的体积分数和燃气热值均逐渐降低,以Ni-CaO为催化剂时750℃是制取富氢燃气的最佳气化温度。当气化温度为750℃,催化剂与原料质量比为1.5,水蒸气通入量为0.34g/(min·g)时,H_2体积分数为60.23%,产氢率为93.75g/kg,燃气热值为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，

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