| Titre : | Sodium-based dry regenerable sorbent for carbon dioxide capture from power plant flue gas (2008) |
| Auteurs : | Joong B. Lee, Auteur ; Chong K. Ryu, Auteur ; Jeom-In Baek, Auteur ; Ji H. Lee, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 47 N° 13, Juillet 2008) |
| Article en page(s) : | p. 4465–4472 |
| Note générale : | Bibliogr. p. 4471-4472 |
| Langues : | Anglais |
| Tags : | Dry regenerable sorbent -- sodium ; Spray-drying techniques ; CO2 capture |
| Résumé : | Dry regenerable sorbent technology is one of the emerging technologies as a cost-effective and energy-efficient technology for CO2 capture from flue gas. Six sodium-based dry regenerable sorbents were prepared by spray-drying techniques. Their physical properties and reactivities were tested to evaluate their applicability to a fluidized-bed or fast transport-bed CO2 capture process. Each sorbents contained 20−50 wt% of Na2CO3 or NaHCO3. All sorbents except for Sorb NX30 were insufficient with either attrition resistance or reactivity, or both properties. Sorb NX30 sorbent satisfied most of the physical requirements for a commercial fluidized-bed reactor process along with good chemical reactivity. Sorb NX30 sorbent had a spherical shape, an average size of 89 μm, a size distribution of 38−250 μm, and a bulk density of approximately 0.87 g/mL. The attrition index (AI) of Sorb NX30 reached below 5% compared to about 20% for commercial fluidized catalytic cracking (FCC) catalysts. CO2 sorption capacity of Sorb NX30 was approximately 10 wt % (>80% sorbent utilization) in the simulated flue gas condition compared with 6 of 30 wt % MEA solution (33% sorbent utilization). All sorbents showed almost-complete regeneration at temperatures less than 120 °C. |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie0709638 |
