Clean Technology for Coal Desulphuration to Reduce SO2 Emissions from Coal Combustion in Thermal Power Plants

Abstract

Power stations using the coal as energetically agent exhaust into the atmosphere large quantities of polluting agents having different forms. Burning of coal involves pollution of environment by means of powders exhausted from chimneys and by means of flying ash spoil dumps. Mechanical pollution is completed by chemical pollution produced as result of action of chemical substances in burned gases that can be even more dangerous than the solid ones, affecting the ecological balances of areas around the energetically complexes. In order to reduce the impact of gases onto the environment is required that in the future to be taken a range of measures aiming to monitor the noxious gases exhausted complying the national and international environment protection laws. Also, considering the toxicity of sulphurous gases over the flora and fauna, this paper analyses, based on original experiments, different methods (desulphurization by flotation, magnetic desulphurization, and bacterial desulphurization) for sulphur content reduction in coal before being used in thermal power plants.