Extraction of ethane from natural gas at high pressure by adsorption on Na-ETS-10
Extraction of ethane from natural gas at high pressure by adsorption on Na-ETS-10
复制标题
DOI：
10.1016/j.ces.2011.03.057
复制
发表时间：
2011-07
影响因子：
4.7
通讯作者：
A. Avila;Fan Yang;Meng Shi;S. Kuznicki
中科院分区：
文献类型：
--
作者：
A. Avila;Fan Yang;Meng Shi;S. Kuznicki
使用 Na-ETS-10 作为填充床吸附剂，在 298 K、450–5600 kPa 的压力范围内实现甲烷/乙烷分离。在这些压力下，在乙烷突破之前获得纯甲烷气体萃余液流。从填充床柱解吸后获得的萃取相富含乙烷。分离 93/7 的甲烷/乙烷进料混合物后，萃取相含有高达 75% 的乙烷。分离性能并没有随着吸附塔压力的增加而恶化。使用Na-ETS-10填充床塔对合成天然气混合物进行选择性吸附，得到的碳氢化合物出口成分范围从纯甲烷（在标准温度和压力下高达〜60床体积）到〜93％甲烷，〜5％乙烷和〜2％丙烷（在标准温度和压力下〜150至〜850床体积）。在所有情况下，解吸后，萃取相高度富集较大且更有价值的碳氢化合物。
Methane/ethane separation was achieved using Na-ETS-10 as a packed-bed adsorbent over a pressure range of 450–5600 kPa at 298 K. At these pressures, pure methane gas raffinate streams were obtained prior to ethane breakthrough. The extract phase obtained following desorption from the packed-bed column was enriched in ethane. Extract phases containing up to 75% ethane were achieved following separations of a 93/7 methane/ethane feed mixture. Separation performance did not deteriorate as adsorption column pressures increased. Selective adsorption of a synthetic natural gas mixture using an Na-ETS-10 packed-bed column resulted in hydrocarbon outlet compositions ranging from pure methane (up to ∼60 bed volumes at standard temperature and pressure) to ∼93% methane, ∼5% ethane and ∼2% propane (∼150 to ∼850 bed volumes at standard temperature and pressure). In all cases, following desorption, the extract phase was highly enriched in the larger and more valuable hydrocarbons.