| Titre : | Heats of reaction and vapor−liquid equilibria of novel chemical absorbents for absorption/recovery of pressurized carbon dioxide in integrated coal gasification combined cycle−carbon capture and storage process (2010) |
| Auteurs : | Kin-ya Tomizaki, Auteur ; Shinkichi Shimizu, Auteur ; Masami Onoda, Auteur ; Yuichi Fujioka, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 49 N° 3, Fevrier 2010) |
| Article en page(s) : | pp. 1214–1221 |
| Note générale : | Industrial chemistry |
| Langues : | Anglais |
| Tags : | Heats of Reaction and Vapor− ; Liquid Equilibria Novel Chemical Absorbents--Absorption--Recovery--Pressurized--Carbon Dioxide--Integrated--Gasification--Combined--Cycle− ; Carbon--Capture--Storage--Process |
| Résumé : | There has been increased interest in the development of innovative carbon dioxide (CO2) capture and storage (CCS) applicable to the integrated coal gasification combined cycle (IGCC) equipped with a water−gas shift reaction, to reduce greenhouse gas emissions to almost zero (IGCC-CCS). We studied the heats of reaction (ΔHr) and vapor−liquid equilibria for N-methyldiethanolamine and novel absorbents [1,2-dimethylimidazole, 2-methylimidazole, 1-methylimidazole, imidazole, and 4-(2-hydroxyethyl)morpholine] obtained by the pKa-based screening method in our previous work and found a proportional relationship between pKa and ΔHr values. This allows estimation of ΔHr values by measuring their pKa. Measurements of vapor−liquid equilibria of novel absorbents provided important information on the CO2 capacity per absorption/recovery cycle. 1,2-Dimethylimidazole and 4-(2-hydroxyethyl)morpholine would be nominated as candidates suitable to absorb/recover CO2 with partial pressures at 1.6 MPa or higher without loss of a CO2 pressure level, resulting in saving CO2 compression energy in the CCS process. |
| Note de contenu : | Bibiogr. |
| ISSN : | 0888-5885 |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie9007776 |
