Abstract
Coal gasification with CO2rich gas mixture is one of several promising new technologies associated with CO2 reduction in the atmosphere. Coal gasification with high CO2 concentration is suitable for producing large amount of syngas. However, an increase in CO2 concentration will result in lower gas temperature in the reactor. In this paper, a similar gas temperature profile in CO2/O2 mixtures to that of coal gasification in air is predicted by observing the effects of CO2 concentration. The coal gasification model considered in this calculation is composed of devolatilization model, char gasification model and gas phase reaction model. Reaction rate equation of n-th order type with the Random Pore Model is applied to the char gasification reaction. Influence of inlet particles size is also studied. It is found that 20μm particles in 21%O2/79%CO2 and 100μm particles in air (21%O2/79%N2) result in a similar gas temperature profile during coal gasification. The outlet gas mixture with the same calorific value as from air blown coal gasification can be obtained if air is replaced by 50%CO2/29%N2/21%O2 mixtures.
| Original language | English |
|---|---|
| Title of host publication | Cleaner Combustion and Sustainable World - Proceedings of the 7th International Symposium on Coal Combustion |
| Publisher | Springer-Verlag Berlin Heidelberg |
| Pages | 726-729 |
| Number of pages | 4 |
| ISBN (Print) | 3540356061, 9783642304446 |
| Publication status | Published - 2012 |
| Externally published | Yes |
| Event | 7th International Symposium on Coal Combustion: Cleaner Combustion and Sustainable World, ISCC - Harbin, China Duration: Jul 17 2011 → Jul 20 2011 |
Other
| Other | 7th International Symposium on Coal Combustion: Cleaner Combustion and Sustainable World, ISCC |
|---|---|
| Country | China |
| City | Harbin |
| Period | 7/17/11 → 7/20/11 |
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Keywords
- Coal gasification
- Syngas
ASJC Scopus subject areas
- Energy Engineering and Power Technology
- Fuel Technology
- Renewable Energy, Sustainability and the Environment
Cite this
Syngas production from coal gasification with CO2 rich gas mixtures. / Alam, M. S.; Wijayanta, A. T.; Nakaso, Koichi; Fukai, J.
Cleaner Combustion and Sustainable World - Proceedings of the 7th International Symposium on Coal Combustion. Springer-Verlag Berlin Heidelberg, 2012. p. 726-729.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Syngas production from coal gasification with CO2 rich gas mixtures
AU - Alam, M. S.
AU - Wijayanta, A. T.
AU - Nakaso, Koichi
AU - Fukai, J.
PY - 2012
Y1 - 2012
N2 - Coal gasification with CO2rich gas mixture is one of several promising new technologies associated with CO2 reduction in the atmosphere. Coal gasification with high CO2 concentration is suitable for producing large amount of syngas. However, an increase in CO2 concentration will result in lower gas temperature in the reactor. In this paper, a similar gas temperature profile in CO2/O2 mixtures to that of coal gasification in air is predicted by observing the effects of CO2 concentration. The coal gasification model considered in this calculation is composed of devolatilization model, char gasification model and gas phase reaction model. Reaction rate equation of n-th order type with the Random Pore Model is applied to the char gasification reaction. Influence of inlet particles size is also studied. It is found that 20μm particles in 21%O2/79%CO2 and 100μm particles in air (21%O2/79%N2) result in a similar gas temperature profile during coal gasification. The outlet gas mixture with the same calorific value as from air blown coal gasification can be obtained if air is replaced by 50%CO2/29%N2/21%O2 mixtures.
AB - Coal gasification with CO2rich gas mixture is one of several promising new technologies associated with CO2 reduction in the atmosphere. Coal gasification with high CO2 concentration is suitable for producing large amount of syngas. However, an increase in CO2 concentration will result in lower gas temperature in the reactor. In this paper, a similar gas temperature profile in CO2/O2 mixtures to that of coal gasification in air is predicted by observing the effects of CO2 concentration. The coal gasification model considered in this calculation is composed of devolatilization model, char gasification model and gas phase reaction model. Reaction rate equation of n-th order type with the Random Pore Model is applied to the char gasification reaction. Influence of inlet particles size is also studied. It is found that 20μm particles in 21%O2/79%CO2 and 100μm particles in air (21%O2/79%N2) result in a similar gas temperature profile during coal gasification. The outlet gas mixture with the same calorific value as from air blown coal gasification can be obtained if air is replaced by 50%CO2/29%N2/21%O2 mixtures.
KW - Coal gasification
KW - Syngas
UR - http://www.scopus.com/inward/record.url?scp=84866099956&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84866099956&partnerID=8YFLogxK
M3 - Conference contribution
SN - 3540356061
SN - 9783642304446
SP - 726
EP - 729
BT - Cleaner Combustion and Sustainable World - Proceedings of the 7th International Symposium on Coal Combustion
PB - Springer-Verlag Berlin Heidelberg
ER -