Experimental Study on the Influence of Hydrogel on CO2 Hydrate Formation

The influence of two differently cross‐linked polyacrylate particles on CO2 hydrate formation was investigated. A series of up‐scaling experiments from small (high‐pressure differential scanning calorimetry, HP‐DSC) over medium (glass reactor) to large scale (HP‐reactor) was carried out. It was found out that there is a low influence on the induction time, which is an essential key parameter of the hydrate formation. The results show the same trends: with a low degree of cross‐linker used in low concentration CO2 hydrate formation could be enhanced. CO2 hydrate formation was studied within series of up‐scaling experiments using hydrogel additives with different content of cross‐linker. The targeted use of weakly cross‐linked hydrogels enhances the CO2 hydrate formation and makes CO2 hydrate slurries interesting as process fluids in climate cooling systems and for the development of further innovative applications.