基于生物质热解原理对碱金属原位催化松木屑的热解特性进行探讨，考虑到碱金属熔盐类物质具有熔点低的特点，以Na₂CO₃和NaOH作为松木屑热解的原位催化剂，探究两者在不同配比条件下对松木屑热解三相产物产率的影响规律。结果表明，Na₂CO₃与NaOH对松木屑热裂解具有催化作用，促进松木屑中有机键的断裂，热解气相产率得到明显提升，同时促进焦油的降解。相比较而言，Na₂CO₃的催化效果更为显著，在750℃下其热解气相产率与无催化剂相比提高了18.04%。

Based on the principle of biomass pyrolysis,the pyrolysis characteristics of pine sawdust over alkali metal in-situ catalysis are discussed.Considering the low melting point of alkali metal molten salts,Na₂CO₃ and NaOH are used as in-situ catalysts for pine sawdust pyrolysis,and the effects of the ratio between Na₂CO₃ and NaOH on the yield of three-phase products from pine sawdust pyrolysis are investigated.Experimental results show that Na₂CO₃ and NaOH have catalytic effects on the pyrolysis of pine sawdust,promote the breaking of organic bonds in pine sawdust,improve the pyrolysis gas phase yield significantly,and promote the degradation of tar.In comparison,the catalytic effect of Na₂CO₃ is more significant.Under the catalysis of Na₂CO₃ at 750℃,the pyrolysis gas phase yield is increased by 18.04% compared with that without catalyst.

庞赟佶(1982-),男,博士,副教授,研究方向为生物质高效热转化技术的研发和大气风场及污染物扩散的模拟研究,245901953@qq.com