褐藻与石油焦共气化特性及贝壳催化效果

STUDY ON CO-GASIFICATION CHARACTERISTICS OF BROWN SEAWEED AND PETROLEUM COKE AND SHELL’S ACTALYTIC EFFECT

以褐藻和石油焦为研究对象,利用小型管式炉气化实验台,研究褐藻和石油焦共气化特性,并以贝壳为催化剂,进一步考察贝壳对褐藻与石油焦共气化催化效果,利用上吸式固定床气化试验台,分析贝壳加入前后气化产生的焦油成分变化情况。结果显示,褐藻与石油焦共气化时碳转化率较石油焦单独气化提高近15%,且当褐藻与石油焦混合比例为1∶1,气化温度在1223 K时,碳转化率接近最高值;贝壳加入对混合物气化转化有一定促进作用,且对焦油中大分子物质裂解有一定催化作用。

The co-gasification characteristics of brown seaweed and petroleum coke are studied by using a small tube furnace,and then the shells’ catalytic effect is researched. The tar component analysis are carried out using a feeding fixed bed gasification furnace. The results showed that the carbon’s conversion rate in co-gasification of brown algae with petroleum coke is 15% higher than that in gasification of petroleum coke,which means brown seaweed and petroleum coke have synergy each other. It is also found that when mixture proportion of brown seaweed and petroleum coke is 1∶1,and the temperature is about 1223 K,the carbon conversion rate is near the highest value. The shells play a role in promoting the mixture co-gasification. And the shells promote the macromolecular substances in the tar cracking further.