神木煤显微组分热解半焦CO_2活化特性研究  

Characteristics and activation with CO_2 of semi-cokes from Shenmu coal and macerals

作　　者：王利斌[1] 白效言[1] 孙会青[1] 王世宇[1] 宫龙颖[2] 

机构地区：[1]煤炭科学研究总院北京煤化工研究分院,北京100013 [2]煤炭科学研究总院检测研究分院,北京100013

出　　处：《洁净煤技术》2011年第2期46-50,共5页Clean Coal Technology

摘　　要：通过对神木煤显微组分不同温度下(500℃,700℃)热解得到的半焦和半焦CO2活化特性进行研究,发现富惰质组半焦比表面积和孔隙结构明显优于富镜质组半焦;热解半焦均存在较宽泛的中孔、大孔,从500℃到700℃,富镜质组半焦生成的微孔多于富惰质组半焦。在实验条件下,500℃和700℃的半焦CO2活化性能均是富镜质组>原煤>富惰质组。热解从500℃提高到700℃,富镜质组半焦的CO2反应活性明显提高。惰质组的结构疏松,在活化过程中容易造成孔壁塌陷,形成大孔,从而导致富惰质组半焦比表面积减小。Characteristics and activation with CO2 of semi-cokes from Shenmu coal and maceral concentrates（pyrolyzed at 500 ℃ and 700 ℃） were investigated.The results show that specific surface and pore structure of inertinite semi-cokes are better than the vitrinite semi-cokes;broad mesopore and macropore exist in all the semi-cokes;there are more micropores created in vitrinite semi-cokes than the inertinite semi-cokes from 500 ℃ to 700 ℃.The activation reactivity with CO2 of semi-coke（pyrolyzed at 500 ℃ and 700 ℃） both are found in the order of vitrinitecoalinertinite under the experimental conditions.Activation reactivity with CO2 of vitrinite semi-coke is improved significantly from 500 ℃ to 700 ℃.Pore wall collapse is found in the activation of inertinite semi-coke due to the loose structure,resluting the decrease of specific surface area.

关 键 词：显微组分 热解 半焦 活化 

分 类 号：TQ541[化学工程—煤化学工程] X37[环境科学与工程—环境工程]