Introduction of low-temperature swirl technology of burning as a way of increase in ecological of low power boilers

Abstract

Abstract.Work is devoted to the solution of problems of energy efficiency increase in low power boilers at combustion of solid fuel. The technological method of nitrogen oxides decomposition on a surface of carbon particles with education environmentally friendly carbonic acid and molecular nitrogen is considered during the work of a low-temperature swirl fire chamber. Based on the analysis of physical and chemical processes of a fuel chemically connected energy transition into thermal, using the diffusive and kinetic theory of burning modern approaches the technique, mathematical model and the settlement program for assessment of plant ecological indicators when using a new method are developed. Alternative calculations of furnace process are carried out, quantitative assessment of nitrogen oxides emissions level of the reconstructed boiler is executed. The results of modeling and experimental data have approved that the organization of swirl burning increases overall performance of a fire chamber and considerably reduces emissions of nitrogen oxides.

Research of nitrogen oxides generation during low-temperature swirl fuel combustion

“…In the LTS furnace, fuel is predominantly burned in the lower swirl zone, where multiple forced circulation of fuel particles is organized, which makes it possible to equalize the temperature field in the combustion chamber and to lower the temperature level in the furnace (on average by 100150 K). The LTS-combustion method opens up great opportunities for reducing the dimensions of boilers and reducing metal costs due to an increase in the intensity of combustion and heat-mass exchange processes [13,14].…”