| 학회 |
한국화학공학회 |
| 학술대회 |
2015년 가을 (10/21 ~ 10/23, 일산 KINTEX) |
| 권호 |
21권 2호, p.1867 |
| 발표분야 |
에너지 |
| 제목 |
고온에서 CO2 흡수/재생을 위해 새로운 메커니즘을 가진 소듐-리튬실리케이트 기반 CO2 건식 흡수제 개발 |
| 초록 |
New sodium lithium silicate-based dry sorbent (LONS) was developed for CO2 capture at high temperature range between 550℃ and 700℃ (10 vol.% CO2, 10 vol.% H2O, Balance N2). The LONS sorbent developed in this study was prepared by wet-mixing LiOH (Li2CO3) with sodium silicate solution (Na2SiO3) instead of SiO2. The CO2 capture capacity of lithium orthosilicate-based sorbent (LS) was gradually decreased from 20 wt% to 5 wt% during multiple cycles. On the other hand, the LONS sorbent maintained about 23~25 wt% during multiple cycles. We found that the new active material of the LONS sorbent is NaLi3SiO4, which reacts with CO2 and transforms into Li2SiO3, Li2CO3 and Na2CO3 at the regeneration temperatures below 650℃ as follows; 2NaLi3SiO4+2CO2 ↔ 2Li2SiO3 + Li2CO3 + Na2CO3. In particular, the LONS sorbent showed faster sorption rate than LS sorbent. Consequently, we concludes that new sodium lithium silicate-based dry sorbent developed in this study can be used as a sorbent having the potential for CO2 capture at high temperature ranges. |
| 저자 |
서휘민1, 박용기1, 조민선2, 임은지2, 황병욱2, 박명곤2, 정석용2, 이수출2, 김재창2, 권용목2
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| 소속 |
1한국화학(연), 2경북대 |
| 키워드 |
CO2; capture; dry sorbent; sodium silicate; lithium sodium silicate; NaLi3SiO4
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| E-Mail |
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| 원문파일 |
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