| 초록 |
The removal of tetrahydrothiophene (THT) in natural gas has been studied by using porous adsorbents. Imported/municipal natural gas is widely used for H2 production and sulfur odorants are contained to natural gas in parts per million (ppm) level for warning of a leak. However, they must be removed because even, in trace amount, they can severely poison the catalysts used in the H2 production process. In this study, the breakthrough experiments for THT adsorption balanced with CH4 were conducted with modified activated carbon and zeolite at low concentration (under 5ppm), high pressure (9bar) and two different temperature conditions (30℃ and 60℃). Then, the adsorption capacity and breakthrough characteristics were evaluated. And, the adsorption characteristics of THT were interpreted by using physical properties of the adsorbents from N2 isotherms at 77K and CO2 isotherms at 273K. |
