PYROLYSIS CHARACTERISTICS OF COAL, BIOMASS AND RDF BLENDS IN THERMOGRAVIMETRIC ANALYZER

摘要

@@IntroductionSolid fuels, such as coal, biomass and RDF (Refuse Derived Fuel) can produce gaseous fuel or chemicals by the thermal conversion process. Although coal has a higher energy contents than biomass, utilization of coal can cause serious environmental pollution. On the other hand, biomass is environmentally friendly when utilized for energy production. Co-utilization of coal with other fuels such as biomass and RDF for energy production has been studied [1], It is known that co-utilization of coal and biomass can reduce air pollutants such as NOX, Sox and volatile organic compounds (VOCs) and polyaromatic hydrocarbons (PAH) [2], Also, ash from biomass can act as a catalyst for coal gasification reaction [3]. Also, RDF usually made of waste and plastic is expected to show some interaction with coal at high temperature. Synergistic or additive behaviors between coal and biomass/RDF are reported. However, it is somewhat controversial because it depends on the reactor type, heating rate and reaction time. In previous studies of pyrolysis kinetics of biomass, the one-step global reaction model and the two step consecutive model were used to interpret their kinetic data [4, 5]. In this study, the pyrolysis characteristics of the coal/biomass/RDF blends with variation of blends ratio were determined and the synergistic effects between coal and biomass/RDF were determined.