Natural product sodium alginate drives low-energy natural gas hydrate storage: Synergy of concentration and stirring optimization

Hydrates are an environmentally friendly and safe energy storage medium for gases. The efficient conversion of hydrates using low-energy methods can effectively reduce the cost of hydrate technology. This study is based on the experimental process of hydrate-storage natural gas in the system of the natural product macromolecule sodium alginate, and clarifies the promoting effect of sodium alginate solution on the conversion of hydrates. The viscosity of the solution has a shearing and destructive effect on the hydrate layer, which leads to a significant increase in the conversion rate of hydrates at low rotational speeds. It was found that a low concentration of sodium alginate (0.1 wt%) system increased gas consumption by 127.87% to 286.23% at lower speeds and higher temperatures, and the energy required for the conversion process was lower. This study provides data support and reference for the industrial application of hydrate energy storage technology.