摘要
通过改变生物质燃气重整过程中重整温度、反应时间、水蒸气的添加等参数,考察了国产烃类蒸汽转化催化剂Z405重整净化生物质燃气的性能及对合成气化学当量比的调变作用。结果表明:在Z405的作用下,生物质燃气中CH4和C2转化率均高达95%以上,合成气中CH4和C2的含量分别低于0.500%和0.005%,H2与CO含量有显著增加,CO2含量有所减少。添加水蒸气后H2/CO值较之无水蒸气的添加发生了显著变化,从0.70提高到1.15,气体低热值有所增大。提高重整温度对生物质合成气组分具有显著的调变作用,H2和CO含量增幅随温度升高而增加,CH4与C2组分含量降低幅度也随温度升高而增加。但当重整温度超过780℃时,对合成气组分调整作用不明显。重整生物质燃气组分在60min内无明显改变,未检测到催化剂活性降低、失重及积炭。
Performance of commercial steam reforming （nickel-based） catalyst Z405 on cleaning and upgrading the producer gas from biomass gasification was investigated by means of temperature, time-on-stream and steam addition. Results show that over the catalyst Z405, CH4 and C2 conversion was above 95 % with contents of 0.5 % and 0. 005 % respectively. H2 and CO contents increased and CO2 decreased remarkably. H2/CO ratio rose from 0.7 to 1.15 with addition of steam. The low heating value of synthesis gas increased after reforming reaction. The contents of biomass syngas increased remarkably with the enhancement of reforming temperature, in which H2 and CO contents increased and CH4 and C2 conversion decreased with higher temperature. However, the variation of syngas composition was not remarkable as the temperature over 780℃. The activity of catalyst Z405 kept unchanged and the carbon deposition on its surface was not detected during 60min reaction.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2006年第7期666-670,共5页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(50476090)
广东省科技计划项目(2003B30803)
