摘要
利用水合物法提纯低浓度煤层气具有非常广泛的应用前景。根据正交实验原理设计实验,研究了多孔介质、THF、TBAB对低浓度煤层气水合物合成的相平衡条件、诱导时间和储气量的影响。结果表明,THF+TBAB复配溶液有效改善了水合物合成的相平衡条件,其中THF的促进作用更显著;本实验体系可以有效降低水合物生成的诱导时间,但诱导时间表现出一定的随机性;多孔介质的存在提高了水合物储气量,最高达到38.3L/L。
Hydrate-based gas separation is one of the potential methods forupgrading low-concentration coal bed methane. The influences of the porous property of media and the concentrations of THF and/or TBAB on hydrate phase equilibrium, induction time and gas storage capacity were experimentally investigated by a designed orthogonal test method. The results show that the presence of additive mixture （THF＋TBAB） remarkably improved the hydrate phase equilibrium conditions, and THF played a major role in thermodynamic promotion.The porous media＋THF＋TBAB systemcould effectively reduce the induction time of hydrate formation, but the induction time exhibited certain randomness. The existence of the porous media improved the gas storage capacity of hydrate, whose highest value reached 38.3L/L.
出处
《天然气化工—C1化学与化工》
CAS
CSCD
北大核心
2016年第4期29-32,62,共5页
Natural Gas Chemical Industry
基金
国家自然科学基金(51074111)
国家自然科学基金青年科学基金(51106104)
山西省青年基金(20120210022-5)
关键词
低浓度煤层气
水合物
正交实验
多孔介质
相平衡
low concentration coal bedmethane
hydrate
orthogonal experiment
porous media
phase equilibrium
