| 摘要 |
<p>The invention relates to using gas hydrate (clathrate and semi-clathrate) together with a catalytic formulation, including catalyst and anti-foaming agent, to separate specific gases from a gas mixture. In particular, compound hydrate is formed from a mixed gas feedstock to concentrate one or more desired gas species in the hydrate phase and the remainder in the gas phase. The hydrate is then separated from the gas phase and dissociated to produce a gas stream concentrated in the desired species. Additives that both accelerate the growth of hydrate and facilitate dissociation and separation are added to improve the rate of reaction and, at the same time, eliminate hard-to-break foam produced by the catalyst, thereby enhancing the total throughput of the complete process. The addition of some materials can also result in changes in the density of the hydrate product, which can be useful for optimizing the separation of hydrate from unreacted liquid and/or rejected gas.</p> |
