| 초록 |
Hydrogen (H2) is now considered as a future clean energy source that can be a solution to mitigate CO2 greenhouse global warming. To meet the increasing demand for this clean energy of the post-petroleum era, alternative routes of H2 production are needed to be developed.H2 could be recovered from the lean H2 mixture gas, and pressure swing adsorption (PSA) process is the highest potential to perform it effectively. However, since most of the PSA processes developed are focused on the feed gas with H2 concentration over 50 vol.%, new concept of PSA process is required to recover H2 from H2 lean gases. Series PSA, which consists of the bulk separator and purifier, is developed to recover H2 efficiently from lean H2 mixture. In this study, 19.9% H2 mixture was used as a feed gas in dynamic simulation for series PSA. Activated carbon and zeolite 13X were used to the bulk separator and purifier, respectively. Blowdown gas from the purifier was used to purge the bulk separator, which led to increasing both recovery and purity. Series PSA could produce 99.27-99.96% H2 with 36.2-84.7% recovery from 19.9% purity H2, while parallel PSA couldn’t reach H2 purity over 99%. |
