High-temperature reaction in the freeboard region above a bubbling fluidized bed

Industrial and Engineering Chemistry Research

Volumn 49, Issue 6, 2010, Pages 2672-2680

  Hartman, Miloslav ^a   Trnka, Otakar ^a   Pohořelý, Michael ^a   Svoboda, Karel ^a  

^a INSTITUTE OF CHEMICAL PROCESS FUNDAMENTALS   (Czech Republic)

Author keywords

[No Author keywords available]

Indexed keywords

AXIAL CONCENTRATION PROFILES; BED SURFACE; BUBBLING FLUIDIZED BED; CERAMSITE; CONCENTRATION PROFILES; ELECTRICALLY HEATED REACTORS; EXPERIMENTAL MEASUREMENTS; FIRST ORDER; FLUIDIZED REACTOR; GAS DENSITY; HIGH-TEMPERATURE REACTION; INNER DIAMETERS; ISO-PROPANOLS; MODEL EQUATIONS; NUMERIC SOLUTIONS; PLUG FLOW MODELS; RATE OF REACTION; RATE PARAMETERS; STEADY-STATE MEASUREMENTS;

BUBBLE FORMATION; CARBON DIOXIDE; CARBON MONOXIDE; FLUE GASES; FLUIDIZED BEDS; NUCLEAR REACTORS; OXYGEN; WATER VAPOR;

FLUIDIZATION;

EID: 77949361369     PISSN: 08885885     EISSN: 15205045     Source Type: Journal    
DOI: 10.1021/ie901760f     Document Type: Article

References (41)

1. Yates, J. G. Fundamentals of Fluidized-Bed Chemical Processes; Butterworths: London, 1983.
2. Kunii, D.; Levenspiel, O. Fluidization Engineering, 2nd ed.; Butterworth- Heinemann: Boston, 1991.
3. Gupta, C. K.; Sathiyamoorthy, D. Fluid Bed Technology in Materials Processing; CRC Press: Boca Raton, FL, 1999.
4. Yates, J. G.; Rowe, P. N.; Cheesman, D. J. Gas entry effects in fluidized bed reactors. AIChE J. 1984, 30, 890-894.
5. Rowe, P. A Model for chemical reaction in the entry region of a gas fluidized-bed reactor. Chem. Eng. Sci. 1993, 48, 2519-2524.
6. Hartman, M.; Svoboda, K.; Trnka, O. Unsteady-state retention of sulfur dioxide in a fluidized bed with continual feeding of lime and limestone. Ind. Eng. Chem. Res. 1991, 30, 1855-1864.
7. Hartman, M.; Beran, Z.; Svoboda, K.; Veselý, V. Operation regimes of fluidized beds. Collect. Czech. Chem. Commun. 1995, 60, 1-33.
8. Trnka, O.; Veselý, V.; Hartman, M.; Beran, Z. Identification of the state of a fluidized bed by pressure fluctuations. AIChE J. 2000, 46, 509-514.
9. Hartman, M.; Svoboda, K.; Pohořelý, M.; Trnka, O. Combustion of dried sewage sludge in a fluidized-bed reactor. Ind. Eng. Chem. Res. 2005, 44, 3432-3441.
10. van der Vaart, D. R. Freeboard ignition of premixed hydrocarbon gas in a fluidized bed. Fuel 1988, 67, 1003-1007.
11. Veselý, V.; Hartman, M.; Trnka, O.; Fetch, D. Performance of an afterburner chamber with a natural gas burner. Fuel 1996, 75, 1271-1273.
12. Hartman, M.; Trnka, O. Physical characteristics of fluidized bed via pressure fluctuations analysis. AIChE J. 2008, 54, 1761-1769.
13. Hartman, M.; Trnka, O.; Svoboda, K. Use of pressure fluctuations to determine online the regime of gas-solid suspensions from incipient fluidization to transport. Ind. Eng. Chem. Res. 2009, 48, 6830-6835.
14. Yates, J. G.; Rowe, P. N. A model for chemical reaction in the freeboard region above a fluidized bed. Trans. Instn. Chem. Eng. 1977, 55, 137-142.
15. Wen, C. Y.; Chen, L. H. Fluidized bed freeboard phenomena: Entrainment and elutriation. AIChE J. 1982, 28, 117-128.
16. Pemberton, S. T.; Davidson, J. F. Turbulence in the freeboard of a gas-fluidized bed. Chem. Eng. Sci. 1984, 39, 829-840.
17. Kunii, D.; Levenspiel, O. Fluidized reactor models. 1. For bubbling beds of fine, intermediate, and large particles. 2. For the lean phase: Freeboard and fast fluidization. Ind. Eng. Chem. Res. 1990, 29, 1226-1234.
18. Sevon, D. W.; Cooper, D. J. Experimental investigation of combustion efficiency in a circulating fluidized bed organic waste incinerator. Trans. Instn. Chem. Eng. 1990, 68 (Part B), 277-285.
19. Sevon, D. W.; Cooper, D. J. Modeling combustion efficiency in a circulating fluid bed liquid incinerator. Chem. Eng. Sci. 1991, 46, 2983-2996.
20. Hayhurst, A. N.; Tucker, R. F. The combustion of carbon monoxide in a two-zone fluidized bed. Combust. Flame 1990, 79, 175-189.
21. Hayhurst, A. N. Does carbon monoxide burn inside a fluidized bed? A new model for the combustion of coal char particles in fluidized beds. Combust. Flame 1991, 85, 155-168.
22. Hartman, M.; Martinovský, A. Thermal stability of the magnesian and calcareous compounds for desulfurization processes. Chem. Eng. Commun. 1992, 111, 149-160.
23. Hartman, M.; Trnka, O. Reactions between calcium oxide and flue gas containing sulfur dioxide at lower temperatures. AIChE J. 1993, 39, 615-624.
24. Hartman, M.; Svoboda, K.; Trnka, O. Effect of water vapor on the equilibrium between CaO and COS in coal gas. Collect. Czech. Chem. Commun. 1999, 64, 157-167.
25. Barin, I. Thermochemical Data of Pure Substances, 3rd ed.; Platzki, G., Ed.; Verlag Chemie: Weinheim, Germany, 1995.
26. Hartman, M.; Trnka, O.; Pohořelý, M. Minimum and terminal velocities in fluidization of particulate ceramsite at ambient and elevated temperature. Ind. Eng. Chem. Res. 2007, 46, 7260-7266.
27. Geldart, D. Types of gas fluidization. Powder Technol. 1973, 7, 285-292.
28. Hartman, M.; Coughlin, R. W. On the incipient fluidized state of solid particles. Collect. Czech. Chem. Commun. 1993, 58, 1213-1241.
29. Speight, J. G. Lange's Handbook of Chemistry, 16th ed.; McGraw- Hill: New York, 2005.
30. Hartman, M.; Yates, J. G. Free-fall velocities of solid particles through fluids. Collect. Czech. Chem. Commun. 1993, 58, 961-982.
31. Hartman, M.; Trnka, O.; Svoboda, K. Free settling of nonspherical particles. Ind. Eng. Chem. Res. 1994, 33, 1979-1983.
32. Hartman, M.; Trnka, O.; Svoboda, K. Fluidization characteristics of dolomite and calcined dolomite particles. Chem. Eng. Sci. 2000, 55, 6269-6274.
33. Pohořelý, M.; Svoboda, K.; Trnka, O.; Baxter, D.; Hartman, M. Gaseous emissions from the fluidized-bed incineration of sewage sludge. Chem. Pap. 2005, 59, 458-463.
34. Hartman, M.; Svoboda, K. Predicting the effect of operating temperature on the minimum fluidization velocity. Ind. Eng. Chem. Process Des. Dev. 1986, 25, 649-654.
35. Hartman, M.; Veselý, V.; Trnka, O.; Svoboda, K. The height of expansion in bubbling fluidized beds. Collect. Czech. Chem. Commun. 1987, 52, 1178-1185.
36. Hartman, M.; Veselý, V.; Svoboda, K. On the bed expansion in aggregative fluidization. Collect. Czech. Chem. Commun. 1991, 56, 822-830.
37. Bakker, P. J.; Heertjes, P. M. Porosity distributions in a fluidized bed. Chem. Eng. Sci. 1960, 12, 260-271.
38. Yates, J. G.; Simons, S. J. R. Experimental methods in fluidization research. Int. J. Multiphase Flow 1994, 20 (Suppl.), 297-330.
39. Werther, J. Measurement techniques in fluidized beds. Powder Technol. 1999, 102, 15-36.
40. Howard, J. B.; Williams, G. C.; Fine, D. H. Kinetics of Carbon Monoxide Oxidation in Postflame Gases. Fourteenth Symposium (International) on Combustion; The Combustion Institute, University Park: Pittsburgh, PA, 1973; pp 975-986.
41. Hartman, M.; Trnka, O.; Veselý, V. Thermal dehydration of magnesium hydroxide and sintering of nascent magnesium oxide. AIChE J. 1994, 40, 536-542.