Pure SF6 and SF6-N-2 Mixture Gas Hydrates Equilibrium and Kinetic Characteristics
- Title
- Pure SF6 and SF6-N-2 Mixture Gas Hydrates Equilibrium and Kinetic Characteristics
- Authors
- Lee, EK; Lee, JD; Lee, HJ; Lee, BR; Lee, YS; Kim, SM; Park, HO; Kim, YS; Park, YD; Do Kim, Y; null
- Date Issued
- 2009-10
- Publisher
- AMER CHEMICAL SOC
- Abstract
- Sulfur hexafluoride (SF6), whether pure or mixed with inexpensive inert gas, has been widely used in a variety of industrial processes, but it is one of the most potent greenhouse gases For this reason, it is necessary to separate and/or collect it from waste gas streams. In this study, we investigated the pure SF6 and SF6-N-2 mixture gas hydrates formation equilibrium as well as the gas separation efficiency in the hydrate process. The equilibrium pressure of SF6-N-2 mixture gas was higher than that of pure SF6 gas. Phase equilibrium data of SF6-N-2 mixture gas was similar to SF6 rather than N-2. The kinetics of SF6-N-2 mixture gas was controlled by the amount of SF6 at the initial gas composition as well as N-2 gas incorporation into the S-cage of structure-II hydrate preformed by the SF6 gas, Raman analysis confirmed the N2 gas incorporation into the S-cage of structure-II hydrate. The compositions in the hydrate phase were found to be 71, 79, 80, and 81% of SF6 when the feed gas compositions were 40, 65, 70, and 73% of SF6, respectively. The present study provides basic information for the separation and purification of SF6 from mixed S' gas containing inert gases.
- Keywords
- MOLECULES; CO2
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/27867
- DOI
- 10.1021/ES901350V
- ISSN
- 0013-936X
- Article Type
- Article
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.