Investigation of coal particle gasification processes with application leading to underground coal gasification

摘要: Abstract A coal particle model is developed to investigate the thermochemical processes of gasification for underground applications. The chemical reactions are defined with an Eddy Break up (EBU) controlling reaction mechanisms and study particularly focused on identification important kinetic parameters, which control consumption rate mass. As initial validation, oxidation based experimental results used comparison. subsequently applied process investigation, show that best agreement achieved by pre-exponent factor (A) 0.002 85500, reactions, R2 (C + O2 = CO2) R3 (C + 0.5O2 = CO), respectively. parameters leading syngas production also optimised. H2 CO controlled significantly level oxygen concentration in char reactions. However, their rates strongly dependent upon zones. For example, produced both reduction zones, while dominated zone. Spatio-temporal distributions gas species along temperature provide additional information further development UCG modelling. Ultimately, gives a good guideline associated can help developing advanced technology lead improved quality.