摘要
我国煤层气资源十分丰富 ,但其利用率极低 ,这主要是因为抽放煤层气中的有效成分甲烷浓度低。因此对煤层气中甲烷的分离提纯极为重要。混合气中各组分在共同吸附时具有竞争性 ,这在变压吸附过程中直接影响到混合气中各组分的吸附和解吸。文章通过模拟煤层气 (CH4 /N2 )的吸附过程 ,从理论上分析了混合气体吸附过程中各组分在游离相和吸附相的浓度变化特征及其对变压吸附分离的影响。最后讨论了抽放煤层气中其他组分对所要提纯组分CH4
China is very rich in coal-bed gas resources, however, their utilization rate is much lower, because of low concentration of the effective constituent-methane in coal-bed gas exhausted. So it is very important to separate and purify the coal-bed gas. Because various constituents in mixed gas are of competitiveness during commonly adsorbing, the adsorption and desorption of various constituents will be directly influenced in the pressure-changed adsorbing process. Through simulating the process of coal-bed-gas (CH4/N2), the concentration change characteristics in free-phase and adsorption-phase of various constituents in the adsorption process of mixed gas and their influence on pressure-changed adsorption separation are analyzed in theory in the paper. Finally, the influence of the other constituents in exhausted coal-bed gas on purified constituent of CH4 is discussed also in the article.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2001年第4期91-94,共4页
Natural Gas Industry
基金
春晖计划和专项基金- 12项目资助
关键词
混合气体
煤成气
成分
气体吸附
吸附分离
Mixed gas,Coalbed gas,Composition,Gas adsorption,Adsorption Separation
