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March 2019 (published: 27.03.2019)
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On the economic efficiency of gas turbine utilization technologies
Rachmanov Y.A. , Sergienko O.I., Vasilenok V.L., Gorbunov G.N.
The possibilities of utilization of the heat of high-temperature flue gases of the systems of thermal-oxidative utilization of municipal solid waste using gas turbine technologies are considered. According to the European and Russian reference documents for the best available techniques, incineration of municipal solid waste is permissible provided that the permissible values of pollutant emissions are not exceeded in flue gases and their heat recovery for internal consumption or for external consumers ensures their energy and economic efficiency. Rotating kilns with an excess air coefficient of α = 2 and layered furnaces with an excess air coefficient of α = 1.6 are considered as the thermal oxidative neutralization systems. The scheme with the air turbine and the gas turbine with the reverse sequence of waste disposal and heat recovery of flue gases are analyzed. The calculation methodology for determining the energy efficiency indicators for gas turbine technologies with ceramic filters is given such as saving of equivalent fuel in replaceable boiler houses and power plants, saving of additional fuel and heat utilization factor. The results of the analysis of energy efficiency of thermal-oxidativeneutralization systems using air and gas turbine schemes with the reverse sequence of processes and ceramic filters show that the “reverse” scheme is more cost-effective due to the higher utilization rate of flue gas heat and reduction in their volume. The obtained calculated data can be used to identify the best available techniques for energy waste utilization with the use of thermo-oxidative neutralization and gas turbine technologies.
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Keywords: energy efficiency, thermo-oxidative neutralization, best available technique, (BAT), gas turbine technology, ceramic filters, excess air coefficient, flue gases, efficiency, additional fuel savings.
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