1,2,4-triazole as a new thermodynamic inhibitor of CO2 hydrate

Hydrate inhibitors can effectively prevent hydrate blockage in pipelines. Thermodynamic inhibitors suppress hydrate formation by altering hydrate phase equilibrium conditions. This paper primarily investigates the influence of 1,2,4-Triazole aqueous solutions at different concentrations on carbon dioxide hydrate dissociation conditions by the graphical method. 1,2,4-triazole can enhance hydrate formation pressure. With higher concentrations of 1,2,4-triazole, it has a stronger inhibitory influence on carbon dioxide hydrates. Compared to methanol and ethylene glycol, 1,2,4-triazole exhibits lower toxicity and better biodegradability, making it an environmentally friendly hydrate thermodynamic inhibitor. The nitrogen atoms in the molecular structure of 1,2,4-triazole possess polarity, enabling them to form strong hydrogen bond. This enhances competition for water molecules, decreasing the water for hydrate formation and consequently inhibiting hydrate nucleation.