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通过实验方法研究了生物质炭对生物质热解焦油的催化特性。通过分析焦油裂解率在催化剂及其重量、蒸汽加入量和加入方式、氮气流量等条件下的变化可知:在蒸汽条件下,生物质炭对焦油有显著的催化裂解效果,最高焦油转化率可达96.1%。通过对实验条件下裂解产物、裂解气体积分数的分析可知,生物质炭和蒸汽可以促进热解产物里面的可凝结相转化为不可凝结的气体,并且导致气体组分体积分数的变化。裂解气中氢气产量增加较快,最高可达裂解气体积的50.2%。
The catalytic properties of biomass carbon pyrolysis tar were studied experimentally. By analyzing the rate of tar cracking in the catalyst and its weight, the amount of steam addition and addition mode, the nitrogen flow rate and other conditions change shows that: in the steam conditions, the biomass charcoal tar has significant catalytic cracking effect, the highest tar conversion up 96.1%. Through the analysis of the pyrolysis products and pyrolysis gas fractions under the experimental conditions, it can be seen that the biomass carbon and steam can promote the conversion of the condensable phase into the non-condensable phase in the pyrolysis product and lead to the change of the volume fraction of the gas components. Hydrogen production in pyrolysis gas increases rapidly up to 50.2% of the pyrolysis gas volume.