Kinetic promotion of methane hydrate formation by combining anionic and silicone surfactants: Scalability promise of methane storage due to prevention of foam formation
Kinetic promotion of methane hydrate formation by combining anionic and silicone surfactants: Scalability promise of methane storage due to prevention of foam formation
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DOI：
10.1016/j.jct.2017.09.029
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发表时间：
2018-02-01
影响因子：
2.6
通讯作者：
Kumar, Rajnish
中科院分区：
文献类型：
--
作者：
Bhattacharjee, Gaurav;Barmecha, Vivek;Kumar, Rajnish
由于其温和的储存条件、高的气体保留能力和良性（非爆炸性）特性，以其固体水合物形式储存甲烷最近成为大规模储存气体的相当有吸引力和低风险的选择。然而，它有其公平份额的限制与水合物形成的速度慢是最突出的之一。向水合物形成系统中添加表面活性剂如十二烷基硫酸钠（SDS）显著加速甲烷水合物形成的过程，但是在水合物形成和分解过程中由这些表面活性剂产生的大量泡沫是该技术规模化的主要障碍。在目前的工作中，已经提出了少量的硅基表面活性剂作为消泡剂与阴离子表面活性剂SDS结合使用，以消除泡沫的产生，同时促进甲烷水合物形成的动力学。这个想法很简单，成本效益高，在寻求开发商业可扩展的基于水合物的甲烷储存技术方面可能会改变游戏规则。(C)2017爱思唯尔有限公司
Methane storage in its solid hydrate form has recently come up as a rather attractive and low risk option for large scale storage of the gas owing to its mild storage conditions, high gas retention capacity and benign (non-explosive) character. However, it has its fair share of limitations with the slow rate of hydrate formation being one of the most prominent. The addition of surfactants like Sodium dodecyl sulfate (SDS) to the hydrate forming system significantly speeds up the process of methane hydrate formation but the large amount of foam generated by these surfactants during the process of hydrate formation and dissociation stands as a major roadblock towards the scaling up of the technology. In the current work, a small amount of a silicon based surfactant has been proposed to be used as antifoam in conjunction with an anionic surfactant SDS to eliminate the foam generation while at the same time promote the kinetics of methane hydrate formation. The idea is simple, cost effective and can be a potential game-changer in the quest to develop a commercially scalable hydrate based methane storage technology. (C) 2017 Elsevier Ltd.