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Year 2017, Volume: 3 Issue: 6 - Special Issue 6: Istanbul International Conference on Progress Applied Science (ICPAS2017), 1574 - 1587, 04.10.2017
https://doi.org/10.18186/journal-of-thermal-engineering.353727

Abstract

References

  • [1] Ministry of Economy, Trade and Industry, Energy in Japan 2010, Japan 13–14 (2010)
  • [2] Luan, Y.T., Chyou, Y.P., Wang, T.: Numerical analysis of gasification performance via finite-rate model in a cross-type twostage gasifier. Int. J. Heat Mass Transf. 57, 558–566 (2013)
  • [3] Chen, C., Masayuki, H., Toshinori, K.: Numerical simulation of entrained flow coal gasifiers Part I: modeling of coal gasification in an entrained flow gasifier. Chem. Eng. Sci. 55, 3861-3874 (2000)
  • [4] Chen, C., Masayuki, H., Toshinori, K.: Numerical simulation of entrained flow coal gasifiers Part II: effects of operating conditions on gasifier performance. Chem. Eng. Sci. 55, 3875-3883 (2000)
  • [5] Silaen, A., Wang, T.: Effect of turbulence models on gasification simulation. Proceedings of the 25th International Pittsburgh Coal-Gen Conference, Pittsburgh, Pennsylvania, September (2008)
  • [6] Silaen, A., Wang, T.: Effects of fuel injection angles on performance of a two stage coal gasifier. Proceedings of the 23rd Pittsburgh Coal Conference, Pittsburgh, Pennsylvania, September (2006)
  • [7] Silaen, A., Wang, T.: Effect of turbulence and devolatilization models on coal gasification simulation in an entrained-flow gasifier. Int. J. Heat Mass Transf. 53, 2074–2091 (2010)
  • [8] Alam, M.S., Agung, T.W., Nakaso, K., Fukai J.: Study on coal gasification with soot formation in two-stage entrained-flow gasifier. Int. J. Energy Environ. Eng. 6(3), 255-265 (2015)
  • [9] National Institute of Standards and Technology (NIST) chemistry web book.
  • [10] Hara, S., Oki, Y., Kajitani, S., Watanabe, H., Umemoto, S.: Examination of Gasification Characteristics of Pressurized Two-stage Entrained-flow Coal Gasifier - Influence of Oxygen Concentration in Gasifying Agent. CRIEPI Energy Engineering Research Laboratory Report No. M08019 (2009)
  • [11] Ansys Fluent 12.0 User’s Guide, Ansys Inc., 2009
  • [12] Kidoguchi, K., Kajitani, S., Oki, Y., Umemoto, S., Umetsu, H., Hamada, H., Hara S.: Evaluation of CO2 Enriched Gasification Characteristics Using 3t/d Bench Scale Coal Gasifier - Influence of CO2 Concentration in Gasifying Agent. CRIEPI Energy Engineering Research Laboratory Report No. M11019 (2012)
  • [13] Kobayashi, H., Howard, J.B., Sarofim, A.F.: Coal Devolatilization at High Temperatures. Symposium (International) on Combustion. 16, 411-425 (1977)
  • [14] Hashimoto, N., Kurose, R., Shirai, H.: Numerical simulation of pulverized coal jet flame employing the TDP model. Fuel 97, 277-287 (2012)
  • [15] Watanabe, H., Otaka, M.: Numerical simulation of coal gasification in entrained-flow coal gasifier. Fuel 85, 1935-1943 (2006)
  • [16] Wijayanta, A.T., Alam, M.S., Nakaso, K., Fukai, J.: Numerical investigation on combustion of coal volatiles under various O2/CO2 mixtures using a detailed mechanism with soot formation. Fuel 93, 670-676 (2012)
  • [17] Massachusetts Ins. of Tech., Combustion Research Website (http://web.mit.edu)
  • [18] Kazakov, A., Wang, H., Frenklach, M.: Detailed modeling of soot formation in laminar premixed ethylene flames at a pressure of 10 bar. Combust. Flame 100, 111-120 (1995)

SENSITIVITY ANALYSIS OF COAL GASIFICATION IN TWO-STAGE ENTRAINED-FLOW GASIFIER: SYNGAS AND CARBON CONVERSION PREDICTION

Year 2017, Volume: 3 Issue: 6 - Special Issue 6: Istanbul International Conference on Progress Applied Science (ICPAS2017), 1574 - 1587, 04.10.2017
https://doi.org/10.18186/journal-of-thermal-engineering.353727

Abstract

The energy production from coal-fired power plant is increasing day
by day, which result in increased CO2 emission from the existing
power plant. However, CO2 emission from coal gasification can be
reduced if an efficient CO2/O2/N2 coal
gasification is implemented in IGCC system. Numerical simulations of coal
gasification under CO2/O2/N2 gasification
condition are carried out with the aim of describing the effects of
model parameters, char reaction rates,
operating conditions and heat losses to increase the syngas heating value and
carbon
conversion in a two stage entrained flow coal gasification process. The Eulerian–Lagrangian approach is
applied to solve the Navier–Stokes equation and the particle dynamics. Finite
rate/eddy dissipation model is used to calculate the rate of nine homogeneous
gas-to-gas phase reactions. While only finite rate is used for the
heterogeneous solid-to-gas phase reactions.
It is found
that the carbon conversions of combustor coal lie in the ranges from 97 wt% to
99 wt% for most of the calculated conditions. On the other hand, the carbon
conversion of reductor coals varies from 45 wt% to 57 wt%. A noticeable change
is obtained when the gasification occurs under a high-temperature condition.
Remarkable outlet results of about 32 wt% CO, 0.58 wt% H2 and 89 wt%
overall carbon conversion are predicted if a high temperature of 1673K is
maintained in the reductor. On the other hand, a reduced soot concentration is
predicted if the O2 concentration and/or the reductor gas
temperature increase(s) in the gasifier.

References

  • [1] Ministry of Economy, Trade and Industry, Energy in Japan 2010, Japan 13–14 (2010)
  • [2] Luan, Y.T., Chyou, Y.P., Wang, T.: Numerical analysis of gasification performance via finite-rate model in a cross-type twostage gasifier. Int. J. Heat Mass Transf. 57, 558–566 (2013)
  • [3] Chen, C., Masayuki, H., Toshinori, K.: Numerical simulation of entrained flow coal gasifiers Part I: modeling of coal gasification in an entrained flow gasifier. Chem. Eng. Sci. 55, 3861-3874 (2000)
  • [4] Chen, C., Masayuki, H., Toshinori, K.: Numerical simulation of entrained flow coal gasifiers Part II: effects of operating conditions on gasifier performance. Chem. Eng. Sci. 55, 3875-3883 (2000)
  • [5] Silaen, A., Wang, T.: Effect of turbulence models on gasification simulation. Proceedings of the 25th International Pittsburgh Coal-Gen Conference, Pittsburgh, Pennsylvania, September (2008)
  • [6] Silaen, A., Wang, T.: Effects of fuel injection angles on performance of a two stage coal gasifier. Proceedings of the 23rd Pittsburgh Coal Conference, Pittsburgh, Pennsylvania, September (2006)
  • [7] Silaen, A., Wang, T.: Effect of turbulence and devolatilization models on coal gasification simulation in an entrained-flow gasifier. Int. J. Heat Mass Transf. 53, 2074–2091 (2010)
  • [8] Alam, M.S., Agung, T.W., Nakaso, K., Fukai J.: Study on coal gasification with soot formation in two-stage entrained-flow gasifier. Int. J. Energy Environ. Eng. 6(3), 255-265 (2015)
  • [9] National Institute of Standards and Technology (NIST) chemistry web book.
  • [10] Hara, S., Oki, Y., Kajitani, S., Watanabe, H., Umemoto, S.: Examination of Gasification Characteristics of Pressurized Two-stage Entrained-flow Coal Gasifier - Influence of Oxygen Concentration in Gasifying Agent. CRIEPI Energy Engineering Research Laboratory Report No. M08019 (2009)
  • [11] Ansys Fluent 12.0 User’s Guide, Ansys Inc., 2009
  • [12] Kidoguchi, K., Kajitani, S., Oki, Y., Umemoto, S., Umetsu, H., Hamada, H., Hara S.: Evaluation of CO2 Enriched Gasification Characteristics Using 3t/d Bench Scale Coal Gasifier - Influence of CO2 Concentration in Gasifying Agent. CRIEPI Energy Engineering Research Laboratory Report No. M11019 (2012)
  • [13] Kobayashi, H., Howard, J.B., Sarofim, A.F.: Coal Devolatilization at High Temperatures. Symposium (International) on Combustion. 16, 411-425 (1977)
  • [14] Hashimoto, N., Kurose, R., Shirai, H.: Numerical simulation of pulverized coal jet flame employing the TDP model. Fuel 97, 277-287 (2012)
  • [15] Watanabe, H., Otaka, M.: Numerical simulation of coal gasification in entrained-flow coal gasifier. Fuel 85, 1935-1943 (2006)
  • [16] Wijayanta, A.T., Alam, M.S., Nakaso, K., Fukai, J.: Numerical investigation on combustion of coal volatiles under various O2/CO2 mixtures using a detailed mechanism with soot formation. Fuel 93, 670-676 (2012)
  • [17] Massachusetts Ins. of Tech., Combustion Research Website (http://web.mit.edu)
  • [18] Kazakov, A., Wang, H., Frenklach, M.: Detailed modeling of soot formation in laminar premixed ethylene flames at a pressure of 10 bar. Combust. Flame 100, 111-120 (1995)
There are 18 citations in total.

Details

Journal Section Articles
Authors

J. Fukai This is me

Publication Date October 4, 2017
Submission Date November 15, 2017
Published in Issue Year 2017 Volume: 3 Issue: 6 - Special Issue 6: Istanbul International Conference on Progress Applied Science (ICPAS2017)

Cite

APA Fukai, J. (2017). SENSITIVITY ANALYSIS OF COAL GASIFICATION IN TWO-STAGE ENTRAINED-FLOW GASIFIER: SYNGAS AND CARBON CONVERSION PREDICTION. Journal of Thermal Engineering, 3(6), 1574-1587. https://doi.org/10.18186/journal-of-thermal-engineering.353727
AMA Fukai J. SENSITIVITY ANALYSIS OF COAL GASIFICATION IN TWO-STAGE ENTRAINED-FLOW GASIFIER: SYNGAS AND CARBON CONVERSION PREDICTION. Journal of Thermal Engineering. October 2017;3(6):1574-1587. doi:10.18186/journal-of-thermal-engineering.353727
Chicago Fukai, J. “SENSITIVITY ANALYSIS OF COAL GASIFICATION IN TWO-STAGE ENTRAINED-FLOW GASIFIER: SYNGAS AND CARBON CONVERSION PREDICTION”. Journal of Thermal Engineering 3, no. 6 (October 2017): 1574-87. https://doi.org/10.18186/journal-of-thermal-engineering.353727.
EndNote Fukai J (October 1, 2017) SENSITIVITY ANALYSIS OF COAL GASIFICATION IN TWO-STAGE ENTRAINED-FLOW GASIFIER: SYNGAS AND CARBON CONVERSION PREDICTION. Journal of Thermal Engineering 3 6 1574–1587.
IEEE J. Fukai, “SENSITIVITY ANALYSIS OF COAL GASIFICATION IN TWO-STAGE ENTRAINED-FLOW GASIFIER: SYNGAS AND CARBON CONVERSION PREDICTION”, Journal of Thermal Engineering, vol. 3, no. 6, pp. 1574–1587, 2017, doi: 10.18186/journal-of-thermal-engineering.353727.
ISNAD Fukai, J. “SENSITIVITY ANALYSIS OF COAL GASIFICATION IN TWO-STAGE ENTRAINED-FLOW GASIFIER: SYNGAS AND CARBON CONVERSION PREDICTION”. Journal of Thermal Engineering 3/6 (October 2017), 1574-1587. https://doi.org/10.18186/journal-of-thermal-engineering.353727.
JAMA Fukai J. SENSITIVITY ANALYSIS OF COAL GASIFICATION IN TWO-STAGE ENTRAINED-FLOW GASIFIER: SYNGAS AND CARBON CONVERSION PREDICTION. Journal of Thermal Engineering. 2017;3:1574–1587.
MLA Fukai, J. “SENSITIVITY ANALYSIS OF COAL GASIFICATION IN TWO-STAGE ENTRAINED-FLOW GASIFIER: SYNGAS AND CARBON CONVERSION PREDICTION”. Journal of Thermal Engineering, vol. 3, no. 6, 2017, pp. 1574-87, doi:10.18186/journal-of-thermal-engineering.353727.
Vancouver Fukai J. SENSITIVITY ANALYSIS OF COAL GASIFICATION IN TWO-STAGE ENTRAINED-FLOW GASIFIER: SYNGAS AND CARBON CONVERSION PREDICTION. Journal of Thermal Engineering. 2017;3(6):1574-87.

IMPORTANT NOTE: JOURNAL SUBMISSION LINK http://eds.yildiz.edu.tr/journal-of-thermal-engineering