URI | http://purl.tuc.gr/dl/dias/873606FE-4E23-4C76-A192-181BC855730E | - |
Αναγνωριστικό | http://www.sciencedirect.com/science/article/pii/0016236195000516 | - |
Αναγνωριστικό | https://doi.org/10.1016/0016-2361(95)00051-6 | - |
Γλώσσα | en | - |
Μέγεθος | 9 pages | en |
Τίτλος | Modelling of an entrained flow coal gasifier. 1. Development of the model and general
predictions | en |
Δημιουργός | Vamvouka Despoina | en |
Δημιουργός | Βαμβουκα Δεσποινα | el |
Δημιουργός | Woodburn Edward T. | en |
Δημιουργός | Senior Peter R. | en |
Εκδότης | Elsevier | en |
Περίληψη | A one-dimensional, steady-state model for an entrained flow coal gasifier is developed, incorporating thermogravimetric analysis data on a bituminous coal. The model is based on mass and energy balances, heterogeneous reaction rates and homogeneous gas-phase equilibria. The resulting set of non-linear mixed ordinary differential-implicit algebraic equations was solved by a modified Euler method in conjunction with a non-linear algebraic equation solver. Temperature, reaction rate and composition profiles in a tubular gasifier were predicted at 0.1 and 2 MPa operating pressures, at constant feed rates. Realistic conversions of carbon could not be predicted if the devolatilization reaction and the heterogeneous surface reactions between the coal and oxygen and steam were assumed to proceed sequentially. The model showed that as the combustion was much faster than the gasification, temperature maxima for both the particles and the gas occurred at the point of final consumption of oxygen. The gasification proceeded only in the absence of oxygen. | en |
Τύπος | Peer-Reviewed Journal Publication | en |
Τύπος | Δημοσίευση σε Περιοδικό με Κριτές | el |
Άδεια Χρήσης | http://creativecommons.org/licenses/by/4.0/ | en |
Ημερομηνία | 2015-10-26 | - |
Ημερομηνία Δημοσίευσης | 1995 | - |
Θεματική Κατηγορία | Coal--Gasification | en |
Θεματική Κατηγορία | Gasification of coal | en |
Θεματική Κατηγορία | coal gasification | en |
Θεματική Κατηγορία | gasification of coal | en |
Θεματική Κατηγορία | Entrained flow | en |
Θεματική Κατηγορία | Clay modeling | en |
Θεματική Κατηγορία | Modelling | en |
Θεματική Κατηγορία | Molding (Clay, plaster, etc.) | en |
Θεματική Κατηγορία | modeling | en |
Θεματική Κατηγορία | clay modeling | en |
Θεματική Κατηγορία | modelling | en |
Θεματική Κατηγορία | molding clay plaster etc | en |
Βιβλιογραφική Αναφορά | D. Vamvuka, E. T. Woodburn and P. R. Senior, "Modelling of an entrained flow coal gasifier. 1. Development of the model and general predictions", Fuel, vol. 74, no. 10, pp. 1452-1460, Oct. 1995. doi:10.1016/0016-2361(95)00051-6 | en |