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A model for short residence time hydropyrolysis of single coal particles
Author(s) -
Russel William B.,
Saville Dudley A.,
Greene Marvin I.
Publication year - 1979
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690250108
Subject(s) - coal , mass transfer , residence time (fluid dynamics) , chemistry , particle (ecology) , diffusion , chemical reaction , extant taxon , thermodynamics , flow (mathematics) , mineralogy , mechanics , chromatography , geology , organic chemistry , physics , oceanography , geotechnical engineering , evolutionary biology , biology
The chemical reactions and mass transfer processes occurring within a single coal particle during high temperature hydropyrolysis are described mathematically and the model is tested using extant experimental data. A significant feature of the model is the treatment of bulk flow due to the evolution of volatiles and the resulting balance between diffusion, bulk flow, and chemical reaction. Predictions of the variations in conversion due to changes in total pressure, hydrogen partial pressure, and particle size agree quantitatively with experimental data.