| 초록 |
In this study, we investigated the effect of reducing power (RP) and the content of H2O in the coal-gasified syngas on desulfurization efficiency using bench-scale fluidized-bed reactor. We used three different Zn-based dry sorbents such as ZTO-26, ZAC-C and ZAC-32N, which were manufactured using spray dry method. We used three different gasification conditions such as Kellogg-Rust-Westinghouse (KRW) air-blown gasification (RP: 1.83), Shell oxygen-blown gasification (RP: 41.56) and Institute of Advanced Engineering (IAE) gasification (RP: 4.77). We varied the content of H2O from 5% to 30% and the inlet H2S concentration from 0.5% to 2%. As a result, the desulfurization efficiency decreased as the content of H2O increased regardless of RP. Even though the outlet H2S concentration increased as the inlet H2S concentration increased, the desulfurization efficiency was maintained above 99.5% at even high RP condition. |
