HBGS (hydrate based gas separation) process for carbon dioxide capture employing an unstirred reactor with cyclopentane
HBGS (hydrate based gas separation) process for carbon dioxide capture employing an unstirred reactor with cyclopentane
复制标题
DOI：
10.1016/j.energy.2013.10.031
复制
发表时间：
2013-12-15
期刊：
影响因子：
9
通讯作者：
Linga, Praveen
中科院分区：
文献类型：
--
作者：
Ho, Leong Chuan;Babu, Ponnivalavan;Linga, Praveen
采用无搅拌反应器结构研究了环戊烷作为促进剂/添加剂在预燃混合气水合物分离过程中的作用。在两个不同的温度（275.7 K和285.7 K）和6.0 MPa的实验压力下进行气体吸收测量，以确定水合物形成的动力学。实验中使用了三种不同体积的CP（7.5、15和22 ml），并根据诱导时间和水合物生长速率，确定了在6.0 MPa和275.7 K下15 ml CP是捕获二氧化碳的最佳体积。此外，动力学促进剂，SDS（十二烷基硫酸钠）的效果进行了研究。令人惊讶的是，在SDS和CP存在下，在6.0 MPa和275.7 K下没有观察到动力学性能的改善。根据该研究，发现在最佳15 ml CP（CP层厚度为1.8mm）下，水合物相中二氧化碳的平均组成为90.36mol%，分离因子为17.82。此外，未搅拌的反应器也产生了比搅拌釜反应器更好的动力学性能，其中未搅拌的反应器具有高2.28倍的平均气体吸收。(C)2013爱思唯尔有限公司保留所有权利。
The effect of CP (cyclopentane) as a promoter/additive, in the HBGS (hydrate based gas separation) process for pre-combustion gas mixture was investigated by employing an unstirred reactor configuration. Gas uptake measurements were performed at two different temperatures (275.7 K and 285.7 K) and at an experimental pressure of 6.0 MPa to determine the kinetics of hydrate formation. Experiments were conducted with three different volumes (7.5, 15 and 22 ml) of CP and based on induction time and the rate of hydrate growth, 15 ml of CP was determined to be the optimal volume for carbon dioxide capture at 6.0 MPa and 275.7 K. In addition, the effect of a kinetic promoter, SDS (sodium dodecyl sulfate), was investigated. Surprisingly, no improvement in kinetic performance was observed at 6.0 MPa and 275.7 K in the presence of SDS and CP. From the study, it was found that at the optimal 15 ml CP (CP layer thickness of 1.8 mm), the average composition of carbon dioxide in the hydrate phase was 90.36 mol% with a separation factor of 17.82. Furthermore, the unstirred reactor also yielded better kinetic performance over the stirred tank reactor with the unstirred reactor having a 2.28 times higher average gas uptake. (C) 2013 Elsevier Ltd. All rights reserved.