生物质焦油在氧化钙上的催化裂解研究

Catalytic Cracking Research of Biomass Tar on Calcium Oxide

生物质焦油是生物质气化过程中的有害副产物 ,它会降低气化效率影响设备运行 ,所以必须有效地处理清除 .本文以氧化钙作为催化剂 ,在一定条件下用固定床反应器使生物质焦油发生催化裂解 ,发现氧化钙确实对焦油裂解有催化作用 .当催化温度为 70 0℃时 ,焦油的裂解率为73.5 % ,焦油的气化率为 49.4% ,气态裂解产物为甲烷、乙烯和氢气 .

To decrease the yield of biomass tar is one of the key for the biomass gasification .In the process of gasification ,biomass tar is a troublesome byproduct which should be eliminated. In the experiment,calcium oxide as a catalyst was used to catalytic cracking the hot biomass tar gas piped from gasificating reactor .The effect of catalytic cracking of the tar in a fixed bed reactor was studied .Experimental results proved that calcium oxide have catalytic effect on biomass tar.Biomass tar was cracked into carbon and gas product and the cracking rate was 73.50 %.