| 학회 |
한국화학공학회 |
| 학술대회 |
2005년 봄 (04/22 ~ 04/23, 여수대학교) |
| 권호 |
11권 1호, p.612 |
| 발표분야 |
에너지/환경 |
| 제목 |
Regeneration Properties of Potassium Based Solid Sorbents for CO2 Absorption |
| 초록 |
The regeneration properties of sorbents prepared by impregnation of potassium carbonate were evaluated by observing the amount of CO2 desorbed by heating at 150-400oC in a fixed bed reactor. To understand the regeneration property in detail, a TPD test was performed after CO2 absorption at 60oC. Only one CO2 peak in the TPD was found in the case of K2CO3/AC and K2CO3/MgO. The peak temperatures of K2CO3/AC and K2CO3/MgO were at about 130oC and 360oC, respectively. However, two CO2 peaks were observed in the TPD result for K2CO3/Al2O3. One peak was found at 106oC and the other was observed at temperature above 290oC. XRD pattern of K2CO3/AC after CO2 absorption showed only KHCO3 crystal structure which could be easily regenerated at low temperature like 150oC. XRD pattern of K2CO3/MgO also showed one phase which was assigned to K2Mg(CO3)2. While, XRD pattern of K2CO3/Al2O3 sorbent after CO2 absorption showed two phases assigned KHCO3 and KAl(CO3)2(OH)2. The decrease in the CO2 capture capacity of K2CO3/Al2O3 and K2CO3/MgO at lower temperature than 250oC could be explained through the formation of KAl(CO3)2(OH)2 and K2Mg(CO3)2, respectively, which was not completely converted in the original K2CO3 phase. |
| 저자 |
이수출1, 김재창1, 최보윤1, 안영수2, 류청걸3
|
| 소속 |
1경북대, 2에너지기술(연), 3한전전력(연) |
| 키워드 |
CO2 absorption; potassium based solid sorbent
|
| E-Mail |
|
| 원문파일 |
초록 보기 |
