| Autor: |
Toshiaki HANAOKA, Yukihiko OKUMURA |
| Jazyk: |
angličtina |
| Rok vydání: |
2014 |
| Předmět: |
|
| Zdroj: |
Journal of Thermal Science and Technology, Vol 9, Iss 2, Pp JTST0006-JTST0006 (2014) |
| Druh dokumentu: |
article |
| ISSN: |
1880-5566 |
| DOI: |
10.1299/jtst.2014jtst0006 |
| Popis: |
The effects of Fe and K contents of Fe- and K-loaded chars containing 0-23% Fe and 0-20% K, respectively, with negligible amounts of poisoning elements, on the CO2 gasification behavior (C + CO2 → 2CO) were investigated in the temperature range of 750-1050°C. For 23% Fe-loaded char at gasification temperatures of 900 and 1000 °C, the CO2 gasification rate constants (Kp) were respectively 3.3 times and ～ 8 times higher than those of the char without Fe. At 900 °C, the Kp value increased with an increase in the Fe content up to 10% and remained almost constant above 10% Fe. For K-loaded chars, the Kp value of the char loaded with 10% K had a maximum value of 5.4 min−1at 900 °C; this value was ～ 300 times that of the char without K loading and ～ 90 times higher than the corresponding Kp values of Fe-loaded chars at 900 °C. The addition of excess K (upon loading greater than 10%) to bio-char decreased the Kp because of the decrease in the number of active sites on the char surface. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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