Novel SF6 gas concentration method using hydrate-based gas uptake and sweating process
Novel SF6 gas concentration method using hydrate-based gas uptake and sweating process
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DOI：
10.1016/j.seppur.2022.122441
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发表时间：
2022-10
影响因子：
8.6
通讯作者：
Ryosuke Ezure;Y. Arai;Daiki Nakano;Hiroyuki Komatsu;H. Tajima
中科院分区：
文献类型：
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作者：
Ryosuke Ezure;Y. Arai;Daiki Nakano;Hiroyuki Komatsu;H. Tajima
基于水合物的气体分离是一种利用气体热力学性质的差异将混合气体分离成各自组成的方法。当使用单级操作时，目标气体的最大浓度是受平衡限制的。在这项研究中，我们提出了一种新的基于水合物的气体吸收和出汗过程，在恒压和升温条件下进行。对SF6-N2气体水合物的压力-温度和压力-气体组成平衡条件进行了理论计算，确定了该工艺的操作条件。在1 Mpa和283 KK以下进行的验证实验表明，采用该工艺在多步操作中SF6的浓缩率可达90%。
Hydrate-based gas separation is a method of separating gas mixtures into their individual components using their differences in thermodynamic properties. The maximum concentration of the target gas is equilibrium-constrained when using a single stage of operation. In this study, we propose a novel hydrate-based gas uptake and sweating process under constant pressure with rising temperature. We theoretically calculated the SF6–N2gas hydrate pressure–temperature and pressure–gas composition equilibrium conditions to determine operating conditions for the process. Verification experiments conducted below 1 MPa and below 283 K revealed that SF6was concentrated up to 90 % using this process in a multistep operation.