Hydrate-based solidified natural gas (SNG) technology provides a promising approach to store and transport natural gas, but demanding formation conditions and low methane storage capacity limit its application. Here, we presented a novel spiral-agitated reactor, and hydrate formation in pure water and amino acid systems was evaluated. It is worth to highlight that spiral agitation significantly enhances initial hydrate grow kinetics, and satisfied methane uptake of 134.9 V/V was obtained under a mild condition (4.3 MPa, 275.15 K, and 30 rpm). Impressively, when amino acids were introduced, late hydrate growth was greatly improved because of secondary uptake, and a large methane uptake (145.97 V/V) was obtained under a milder condition (3.8 MPa, 275.15 K, and 60 rpm), which increases by 82.97% comparing to that in pure water systems. These findings provide a new insight (synergistic effect of spiral agitation and amino acids) on enhanced hydrate production under extremely mild conditions.

中文翻译：

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使用新型螺旋搅拌反应器在温和条件下增强水合物形成

基于水合物的固化天然气（SNG）技术为储存和运输天然气提供了一种有前途的方法，但苛刻的地层条件和低甲烷储存能力限制了其应用。在这里，我们提出了一种新型螺旋搅拌反应器，并评估了纯水和氨基酸系统中的水合物形成。值得强调的是，螺旋搅拌显着增强了初始水合物生长动力学，在温和条件（4.3 MPa、275.15 K 和 30 rpm）下获得了 134.9 V/V 的令人满意的甲烷吸收。令人印象深刻的是，当引入氨基酸时，由于二次吸收而大大改善了后期水合物的生长，并且在较温和的条件（3.8 MPa、275.15 K 和 60 rpm）下获得了较大的甲烷吸收（145.97 V/V），这增加了与纯水系统相比降低 82.97%。