摘要
使用3H 2000PW多站重量法蒸汽吸附仪测定298 K、0~100 kPa下,CH 4、O2单组分的静态平衡吸附等温线及298 K、20 kPa下,CH 4、O2单组分的吸附动力学曲线;采用单塔吸附装置研究CH 4/O2混合气中的O2在炭分子筛吸附剂上的动态吸脱附行为;考察O2体积分数在顺放过程中的变化。结果表明:O2在该炭分子筛上的静态吸附量及扩散速率均大于CH4的静态吸附量及扩散速率;吸附压力为0.6 MPa、塔顶气相对流量为1是比较合适的脱氧条件;在床层利用率为60%的条件下,顺放气能够满足产品气中O2体积分数<1%的要求;抽真空5min及吹扫气量3L/min H2是比较好的再生方式;多次连续重复吸脱附实验后,炭分子筛对O2的吸附量稳定不变,是用于煤层气脱氧合适的吸附剂。
Using the 3H-2000PW multi station gravimetric vapor adsorption instrument,pure component static equilibrium adsorption isotherms of CH 4,O 2 at 298 K and 0—100 kPa were measured,adsorption kinetics curves of the pure component of CH 4,O 2 at 298 K and 20 kPa were measured.Study of the dynamic adsorption and desorption behavior of O 2 of gas mixture containing CH 4/O 2 on carbon molecular sieve using single bed adsorption device were studied;the changes of O 2 concentration in the process of the pressure decreasing were examined.The results showed that the static adsorption of O 2 on the carbon molecular sieve of the volume and diffusion rate were greater than CH 4;the appropriate deoxidization conditions were:the adsorption pressure at 0.6 MPa,the relative flow of the top gas of the tower equated 1;the bed utilization rate was 60%,which could meet the<1%O 2 gas shun product concentration;the better regenerating method were using 5 min in vacuum and gas blowing flow of H 2 equated 3 L/min;continuous repeated adsorption and desorption experiment,the carbon molecular sieve adsorption capacity of O 2 was stable,was suitable for coal bed methane deoxidation adsorbent.
作者
杨力
丁艳宾
顾五洲
王之靖
马正飞
YANG Li;DING Yanbin;GU Wuzhou;WANG Zhijing;MA Zhengfei(College of Chemical Engineering,Nanjing Tech University,Nanjing 211800,China;Zhengzhou Fulong New Material Technology Co.Ltd.,Zhengzhou 450006,China)
出处
《南京工业大学学报（自然科学版）》
CAS
北大核心
2019年第6期773-777,共5页
Journal of Nanjing Tech University(Natural Science Edition)
基金
国家国际科技合作专项项目
关键词
煤层气
脱氧
炭分子筛
coal bed methane
deoxidization
carbon molecular sieve
