摘要
以干水中NaCl质量分数、干水中气相疏水性SiO_2质量分数、瓦斯浓度配比为影响因素,利用正交实验法研究干水对水合物法分离瓦斯中CH_4的影响,通过计算获取瓦斯水合分配系数、CH_4回收率、分离因子.运用极差法与方差法分析实验结果,结果表明:干水中疏水性SiO_2质量分数与瓦斯气样配比是CH_4的回收率的显著影响因素,上述3种因素在设定实验范围内对瓦斯水合分离难度和分离净化程度无显著影响;使水合分离难度较低、CH_4的回收率较高、分离净化程度较高的工艺条件为干水中NaCl质量分数1.8%,干水中疏水性SiO_2质量分数5.0%,瓦斯气浓度配比为气样G1.
The orthogonal experiments were used to study the effect of dry-water on methane separation from mine gas via the hydrate formation, with the influencing factors of mass fraction of NaCl and gas phase hydrophobic SiO2 in dry-water and concentration ratio of mine gas. The partition coefficient of mine gas hydrate, recovery rate of CH4 and separation factors were obtained through calculation. The experiment results were analyzed by range and variance analysis methods. The results show that the mass fraction of hydrophobic SiO2 in dry-water and mine gas sample proportion are the significant factors for recovery rate of CH4. The above 3 factors have no significant effect on mine gas separation difficulty and separation purification degree within the setting experimental range. To reduce the hydration separation difficulty, improve the recovery rate of CH4 and increase the separation purification degree, the experiment should be set on the condition of 1. 8% mass fraction of NaCI in dry water, 5 fraction of hydrophobic SiO2 in dry-wator and G1 of concenlration rmio of mine gas respecly.
作者
张强
吴强
张保勇
高霞
刘传海
ZHANG Qiang WU Qiang ZHANG Baoyong GAO Xia LIU Chuanhai(Department of Safety Engineering, Heilongjiang University of Science ＆ Technology, Harbin, Heilongjiang 150027, China Qingdao Institute of Marine Geology, Qingdao, Shandong 26607i, China National Central Laboratory of Hydrocarbon Gas Transportation Pipeline Safety, Harbin, Heilongjiang 150022, China School of Architecture and Civil Engineering, Heilongjiang University of Science and Technology, Harbin, Heilongjiang 150022, China)
出处
《中国矿业大学学报》
EI
CAS
CSCD
北大核心
2016年第5期907-914,共8页
Journal of China University of Mining & Technology
基金
国家自然科学基金项目(51404102
51334005
51174264
51274267
51104062)
国土资源部青岛海洋地质研究所开放基金项目(SHW[2014]-DX-07)
关键词
瓦斯水合物
分离
干水
分配系数
回收率
分离因子
mine gas hydrate
separation
dry waler
partition coefficient
recovery rate
separation factor
