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首页> 外文期刊>Journal of natural gas science and engineering >Effect of the amino acid L-histidine on methane hydrate growth kinetics
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Effect of the amino acid L-histidine on methane hydrate growth kinetics

机译：氨基酸L-组氨酸对甲烷水合物生长动力学的影响

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摘要

In the present study, the effect of a polar amino acid, L-histidine on methane hydrate growth kinetics has been investigated. Methane hydrate formation experiments were carried out in a stirred tank reactor setup at pressure and temperature conditions of 274.15 K and 5.0 MPa respectively. Two different concentrations (0.1 and 1 wt %) of L-histidine were studied. Hydrate growth through molecular dynamic (MD) simulation was also studied; pressure and temperature conditions for the simulations were set at 10.0 MPa and 270.0 K, while the concentration of L-histidine was kept fixed at 0.94 wt %. Hydrate formation runs using MD simulation were carried out with optimal concentration of methane in water. The presence of L-histidine in the system was found to significantly enhance methane hydrate growth kinetics as compared to pure water for both experimental and MD simulation runs. Final gas consumption with 1 wt % L-histidine was found to be comparable to that with 1 wt % SDS, the most commonly used additive for hydrate promotion studies. L-histidine is a benign additive which offers considerable enhancement in methane hydrate formation kinetics and can be utilized for various hydrate based technologies such as methane storage and transport. (C) 2016 Elsevier B.V. All rights reserved.
机译：在本研究中，已经研究了极性氨基酸L-组氨酸对甲烷水合物生长动力学的影响。在搅拌釜反应器中分别在274.15 K和5.0 MPa的压力和温度条件下进行甲烷水合物形成实验。研究了两种不同浓度（0.1和1 wt％）的L-组氨酸。还研究了通过分子动力学（MD）模拟的水合物生长;模拟的压力和温度条件设定为10.0MPa和270.0K，而L-组氨酸的浓度保持固定为0.94wt％。使用MD模拟在水体中甲烷的最佳浓度下进行水合物形成实验。与纯水相比，在实验和MD模拟运行中，系统中L-组氨酸的存在均显着增强了甲烷水合物的生长动力学。发现使用1 wt％L-组氨酸的最终气体消耗量与使用1 wt％SDS（水合物促进研究中最常用的添加剂）的最终气体消耗量相当。 L-组氨酸是一种良性添加剂，可显着提高甲烷水合物的形成动力学，可用于各种基于水合物的技术，例如甲烷的储存和运输。 （C）2016 Elsevier B.V.保留所有权利。

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