摘要
为解决煤层抽放气中CH4/N2的分离问题,以椰壳炭化料为原料,采用炭化、活化和炭沉积相结合的方法,以苯为沉积剂,改变工艺条件,制备了不同性能的炭分子筛,研究了炭分子筛前驱体的种类、苯流量对炭分子筛分离效果的影响,结果表明,在炭化温度450℃,炭化时间40 min,活化温度850℃,活化时间120 min时制备的炭分子筛前驱体,进一步制成炭分子筛对CH4/N2的分离效果最好;在750℃,沉积时间30 min,苯流量0.45 m L/min时制备的炭分子筛对CH4/N2的分离效果最好。
In order to remove N2 from coal seam gas drainage,coconut shell char coal was adopted as raw material,benzene as settling agent,some carbon molecular sieves with different properties were prepared through carbonization,activation and deposition process. The effects of kind of precursor,benzene flow rate on carbon molecular sieve performance were studied. The results showed that,the precursor of carbon molecular sieve which was prepared when the carbonization temperature was 450 ℃,charring time was 40 min,activation temperature was 850 ℃ and the activation time was 120 min,the precursor performed best and its down-stream product carbon molecular sieve also had better separation effects. The best separation condition was that,the temperature was 750 ℃,the deposition time was 30 min,the benzene current capacity was 0. 45 m L / min.
出处
《洁净煤技术》
CAS
2016年第3期1-5,10,共6页
Clean Coal Technology
基金
中央高校基本科研业务费资助项目(2009KH04)
中国矿业大学(北京)大学生创新性实验计划资助项目
关键词
煤层气
变压吸附
CH4/N2
炭分子筛
coalbed methane
pressure swing adsorption
methane/nitrogen
carbon molecular sieve
