Alkaline Industrial Waste Calcination And Desulfurization Reaction Kinetics Characteristics

At present, coal has a dominant position in the energy consumption structure due to the abundant output and reserves, and the economy of coal-fired electricity generation. Hence, coal combustion has always been a main contributor to our national environmental pollution, and emission controlling of the sulfur oxides is an important item to curb the increasing pollution. Accumulation of plenty industrial wastes is polluting our environment. If these wastes are used to desulfur, we can not only reduce the wastes accumulation, but also achieve an object of removing pollution by wastes, through which we can also get considerable economic and environmental benefits. Based on this consideration, several sorts of industrial wastes calcination and desulfurization kinetic characteristics are studied roundly in this thesis.First of all, calcination experimental study on the white clay, carbide slag, alkali slag, salt slurry and Zibo limestone is done by means of thermogravimetric apparatus, and calculate their kinetic parameter-activation energy E. Four sorts of industrial wastes' desulfurization capability are forecast by analyzing these experimental data. The results show that calcination decomposition temperature ranges of the industrial wastes are bigger than that of the limestone, which leads to the outcome that effective ion amount of the industrial wastes is larger than that of the limestone at different reaction temperature, and desulfurization effects of the industrial wastes are better than that of the limestone. White clay and carbide slag have similar calcination kinetic characteristics, whose calcination activation energies decrease as calcination degree grows. Alkali slag and salt slurry also have similar calcination kinetic characteristics, whose calcination activation energies increase as calcination degree grows. From these research results, we can...