生物质炭化生成焦油催化裂解的研究进展

Research progress of catalytic pyrolysis of biomass tar

对生物质热解焦油化学去除方法的研究进展进行综述。认为高温裂解法除焦油温度要求过高,能耗严重,局限性大。对催化裂解法除焦油的研究领域及方向进行了系统的总结和归类,逐一介绍了催化剂类型、反应温度、气相停留时间、空速、催化介质等对焦油转化率影响参数以及各参数的适用范围,分析了适合焦油催化裂解的最佳工艺条件。为方便催化裂解试验的进行,提出了组分配气拟合生物质热解气的工艺方法,为今后进行高效、稳定的焦油催化裂解试验提供条件。

The progress in the chemical removal of tar from biomass pyrolysis is reviewed. The conventional pyrolysis method is greatly limited in the removal of tar because of too high temperature and serious energy consumption.Catalytic pyrolysis has attracted great attention. Its research field and directions are systematically summarized and classified. The effects of catalyst type,reaction temperature,gas residence time,space velocity and catalytic medium on the conversion rate of tar are discussed. The optimum conditions for the catalytic pyrolysis of tar are analyzed. In order to facilitate the catalytic cracking experiment,a set of gas distribution fitted biomass pyrolysis process is put forward,which would provide the conditions for efficient and stable tar catalytic cracking experiment.