Separation of Methane from Coal Bed Gas via Hydrate Formation in the Presence of Tetrahydrofuran and Sodium Dodecyl Sulfate

Separation of Methane from Coal Bed Gas via Hydrate Formation in the Presence of Tetrahydrofuran and Sodium Dodecyl Sulfate
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四氢呋喃和十二烷基硫酸钠存在下通过水合物形成从煤层气中分离甲烷

DOI:
10.1007/s10553-013-0438-4
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发表时间:
2013-07
影响因子:
0.6
通讯作者:
Yangsheng Zhao
Yangsheng Zhao
中科院分区:
工程技术4区
文献类型:
--
作者:
Jianzhong Zhao;Yaqin Tian;Yangsheng Zhao

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提出了一种从含氧煤层气中分离甲烷的新工艺,该工艺以四氢呋喃和十二烷基硫酸钠为助催化剂,通过水合物的生成来分离甲烷。在不同初始压力下进行了甲烷分离实验。如结果所示,在四氢呋喃存在下的水合物形成和甲烷的浓缩在5°C的温度和0.3MPa的压力下是可能的。甲烷浓度可从16.45%提高到61.7%。如果压力从1MPa降低到0.3MPa而温度不变,则甲烷分离的选择性增加。
We propose a novel technology for separation of methane from oxygen-containing coal bed gas via hydrate formation from solutions of promoters: tetrahydrofuran and sodium dodecyl sulfate. Experiments on methane separation from a model gas were conducted at different initial pressures. As shown by the results, hydrate formation in the presence of tetrahydrofuran and concentration of the methane are possible at a temperature of 5°C and a pressure of 0.3 MPa. The methane concentration can be raised from 16.45% to 61.7%. If the pressure is reduced from 1 MPa down to 0.3 MPa with no change in temperature, the selectivity of methane separation increases.
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