生物质废物蒸汽气化高效制取富氢燃气的研究

Study on Efficient Production of Hydrogen-rich Gas by Steam Gasification of Biomass Waste

本文利用固定床管式炉将木屑气化转化为富氢燃气,考察反应温度、注水流量和催化剂用量对气体组分和产量的影响规律。实验结果显示,生物质气化的总产气量和H2占比随反应温度的升高而增加,随注水流量和催化剂用量的增大先增加后减小。生物质蒸汽气化的最佳条件为反应温度850℃、注水流量15 mL/h和原料/催化剂投加比50%,此时总产气量为1835.18 mL/g木屑,其中CO为796.61 mL/g木屑,占比43.54%,而H2也达到最大值724.92 mL/g木屑,占比接近40%。研究结果可以为生物质废物向富氢燃气的高效转化提供数据支撑。

A fixed-bed tube furnace was used to convert wood chips into hydrogen-rich gas.The effects of reaction temperature,water injection flow rate and catalyst dosage on gas composition and production were investigated.The experimental results showed that the total gas production and H2 ratio of biomass gasification increased with the increase of reaction temperature,and first increased and then decreased with the increase of water injection flow and catalyst dosage.The optimal conditions for biomass steam gasification were reaction temperature 850℃,water injection flow rate 15 mL/h and feed/catalyst ratio 50%.At this time,the total gas production was 1835.18 mL/gsawdust,and CO was 796.61 mL/gsawdust,accounting for 43.54%.H2 also reached the maximum value of 724.92 mL/gsawdust,accounting for nearly 40%.The research results can provide data support for the efficient conversion of biomass waste to hydrogen-rich gas.