Open AccessChemical Kinetic Modeling in Coal Gasification Processes: an Overview
Author(s) -
Nadezhda A. Slavinskaya,
Uwe Riedel,
В. Е. Мессерле,
А. Б. Устименко
Publication year - 2012
Publication title -
eurasian chemico-technological journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.227
H-Index - 9
eISSN - 2522-4867
pISSN - 1562-3920
DOI - 10.18321/ectj134
Subject(s) - coal , coal liquefaction , coal gasification , coal combustion products , combustion , wood gas generator , syngas , char , liquefaction , chemistry , clean coal technology , carbochemistry , chemical engineering , waste management , substitute natural gas , environmental science , hydrogen , organic chemistry , engineering
Coal is the fuel most able to cover world deficiencies in oil and natural gas. This motivates the development of new and more effective technologies for coal conversion into other fuels. Such technologies are focused on coal gasification with production of syngas or gaseous hydrocarbon fuels, as well as on direct coal liquefaction with production of liquid fuels. The benefits of plasma application in these technologies is based on the high selectivity of the plasma chemical processes, the high efficiency of conversion of different types of coal including those of low quality, relative simplicity of the process control, and significant reduction in the production of ashes, sulphur, and nitrogen oxides. In the coal gasifier, two-phase turbulent flow is coupled with heating and evaporation of coal particles, devolatilization of volatile material, the char combustion (heterogeneous/porous oxidation) or gasification, the gas phase reaction/oxidation (homogeneous oxidation) of gaseous products from coal particles. The present work reviews literature data concerning reaction kinetic modelling in coal gasification. Current state of related kinetic models for heterogeneous/homogeneous oxidation of coal particles, included plasma assisted, is reviewed.