| 학회 | 한국화학공학회 |
| 학술대회 | 2003년 가을 (10/24 ~ 10/25, 한양대학교) |
| 권호 | 9권 2호, p.2203 |
| 발표분야 | 에너지/환경 |
| 제목 | Cobalt containing sorbents for removing elemental sulfur at low temperature |
| 초록 | Many efforts have been put in treating the low concentration of hydrogen sulfide from the Claus plants or other emission sources. Among the commercial desulfurization processes, the dry catalytic oxidation process is highlighted recently. H2S is catalytically oxidized to elemental sulfur after hydrogenation of sulfur compounds to H2S. It is reported that the low concentration of produced elemental sulfur can cause mechanical problems. In order to make up for the operational limitation of previous condenser, this research proposes the chemical absorption process and proper sorbents. The absorbent Co9S8 reacted with sulfur vapor to yield CoS2 at 350~400oC. The absorbents can be regenerated using hydrogen at the same temperature. When Co9S8 was loaded on Al2O3, the sorbent can be regenerated for over 5 cycles. For the supported cobalt sulfide absorbent, the sulfur concentration and metal loadings didn’t affect on the reactivity above 350oC. The sulfur diffusion rate controlled the overall reaction rate. The supported cobalt sorbents, which have a high surface area and smaller particle size, showed high performance in the sulfur absorption reaction. |
| 저자 | 정재빈, 정종식 |
| 소속 | 포항공과대 |
| 키워드 | sulfur; absorption; sorbent; cobalt |
| VOD | VOD 보기 |
| 원문파일 | 초록 보기 |
