Particle size, porosity and temperature effects on char conversion

Applied Energy

Volumn 88, Issue 12, 2011, Pages 4667-4677

  Ahmed, I I ^a   Gupta, A K ^a  

^a UNIVERSITY OF MARYLAND   (United States)

Author keywords

Char gasification; Char porosity; Diffusion resistance; Gasification temperature; Particle size

Indexed keywords

DIFFUSION; GASIFICATION; PARTICLE SIZE; POROSITY; RATE CONSTANTS;

CHAR GASIFICATION; CHAR PARTICLES; CHAR POROSITY; CONCENTRATION PROFILES; CONTROLLED PROCESS; DAMKOHLER NUMBER; DEGREE OF CONVERSION; DIFFUSION RESISTANCE; DIFFUSION-CONTROLLED PROCESS; FUNCTION OF TIME; GASIFICATION TEMPERATURE; GASIFYING AGENTS; OUTER LAYER; POSITIVE EFFECTS; REACTOR TEMPERATURES; STEEP GRADIENTS; STRAIGHT LINES; TO A VERY LARGE; TRANSPORT EQUATION;

PROCESS CONTROL;

HOMOGENEITY; MATHEMATICAL ANALYSIS; NUMERICAL MODEL; PARTICLE SIZE; POROSITY; TEMPERATURE EFFECT;

EID: 80052272138     PISSN: 03062619     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.apenergy.2011.06.001     Document Type: Article

References (26)

1. Yamashita T., Fujii Y., Morozumi Y., Aoki H., Miura T. Modeling of gasification and fragmentation behavior of char particles having complicated structures. Combust Flame 2006, 146:85-94.
2. Ahmed II, Gupta AK. Kinetics of Woodchips char gasification with steam and carbon dioxide. In: International conference on applied energy (ICAE 2010); 21-23 April 2010, Singapore.
3. Kajitani S., Matsuda S.H.H. Gasification rate analysis of coal char with a pressurized tube furnace. Fuel 2002, 81:539-546.
4. 2O: effects of pressure on intrinsic reaction kinetics. Energy Fuels 2000, 14:483-489.
5. 2-gasification and kinetics of Shenmu Maceral chars with and without catalyst. Fuel 2004, 83:1787-1793.
6. 2. Chem Eng Process 2007, 46:630-636.
7. 2. Appl Energy 2009, 86:2626-2634.
8. Ahmed I., Gupta A.K. Syngas yield during pyrolysis and steam gasification of paper. Appl Energy 2009, 86:1813-1821.
9. Bhatia S.K., Perlmutter D.D. A random pore model for fluid-solid reactions: I. Isothermal kinetics control. AIChE J 1980, 26(3):379-385.
10. Klose W., Wolki M. On the intrinsic reaction rate of biomass char gasification with carbon dioxide and steam. Fuel 2005, 84:885-892.
11. 2 gasification of eucalyptus wood chars. Fuel 1996, 75(13):1505-1508.
12. 2 and steam gasification of a grapefruit skin char. Fuel 2002, 81:423-429.
13. Ahmed I.I., Gupta A.K. Pyrolysis and gasification of food waste: syngas characteristics and char gasification kinetics. Appl Energy 2010, 87:101-108.
14. Everson R.C., Neomagus H.W., Kasaini H., Njapha D. Reaction kinetics of pulverized coal chars derived from inertinite-rich coal discards: gasification with carbon dioxide and steam. Fuel 2006, 85:1076-1082.
15. Wall T.F., Liu G., Wu H., Roberts D.G., Benfell K.E., Gupta S., et al. The effects of pressure on coal reactions during pulverized coal combustion and gasification. Prog Energy Combust Sci 2002, 28:405-433.
16. Cetin E., Moghtaderi B., Gupta R., Wall T.F. Biomass gasification kinetics: influence of pressure and char structure. Combust Sci Technol 2005, 177:765-791.
17. Mann M.D., Knutson R.Z., Erjavec J., Jacobsen J.P. Modeling reaction kinetics of steam gasification for a transport gasifier. Fuel 2004, 83:1643-1650.
18. Umeki K., Namioka T., Yoshikawa K. Analysis of an updraft biomass gasifier with high temperature steam using a numerical model. Appl Energy 2011, 10.1016/j.apenergy.2010.12.058.
19. Yilgin M., Pehlivan D. Volatiles and char combustion rates of demineralised lignite and wood blends. Appl Energy 2009, 86:1179-1186.
20. Erlich C., Fransson T.H. Downdraft gasification of pellets made of wood, palm-oil residues respective bagasse: experimental study. Appl Energy 2011, 88:899-908.
21. Sand U., Sandberg J., Larfeldt J., Fdhila R.B. Numerical prediction of the transport and pyrolysis in the interior and surrounding of dry and wet wood log. Appl Energy 2008, 85:1208-1224.
22. de Souza-Santos Marcio L. Solid fuels combustion and gasification; modeling simulations and equipment operation 2004, Marcel Dekker, ISBN: 0-8247-0971-3.
23. Reddy J.N. An introduction to the finite element method 1993, McGraw-Hill, ISBN: 0-07-051355-4. 2nd ed.
24. Fairbanks D.F., Wilke C.R. Diffusion coefficients in multicomponent gas mixtures. Ind Eng Chem 1950, 42(3):471-475.
25. Ahmed I.I., Nipattummakul N., Gupta A.K. Characteristics of syngas from Co-gasification of polyethylene and woodchips. Appl Energy 2011, 88:165-174.
26. Belfiore L.A. Transport phenomena for chemical reactor design 2003, John Wiley, ISBN: 0-471-20275-4.