EFFECTS OF ADDITIVES ON CARBON DIOXIDE HYDRATE FORMATION

• Main Authors: Liu, Ni, Gong, Guoqing, Liu, Daoping, Xie, Yingming
• Language: English
• Published: 2008
• Subjects: carbon dioxide; gas hydrate; additive; formation rate; ICGH 2008; International Conference on Gas Hydrates
• Online Access: http://hdl.handle.net/2429/1206

In this paper, the effect of additives on COB2B hydrate formation is investigated in a high-pressure test cell surrounded by a thermostated coolant bath. An agitator is configured inside the cell. The characteristics of COB2B gas hydrate formation with additives SDS, THF and mixture of both were discussed. It was found that, in a quiescent system with single SDS，hydrate could form rapidly and the induction time of hydrates formation was reduced, while THF shows no improvement effect on COB2B hydrate formation. However, the mixture of SDS and THF can promote the hydrate formation rate considerably, and large amount of hydrates formed. In a stirring system with mixture additives, hydrates can form completely about 100 minutes early than that in the quiescent system.