Low-temperature swirl burning as a method  for improving the environmental performance  of a high-power boiler

The normative documents in the field of environmental protection require that the established emission standards be met both in the construction of new energy facilities and in the improvement of energy equipment. The study presents the results of numerical research on low-temperature vortex burning in a P-49 boiler of the 500 MW block of the Nazarovsky state district power plant for ecological justification of the project of its modernization to low-temperature swirl technology. Using the developed models, technique and the computer program, calculations of furnace process were carried out and quantitative assessment of the emissions level of nitrogen oxides for the modernized boiler was executed. The results of modeling and the experimental data obtained when carrying out commissioning and balance tests of the P-49 boiler with the LTS fire chamber confirmed that introducing swirl burning has allowed to increase overall performance, to eliminate slagging, to considerably reduce emissions of nitrogen oxides, to improve ignition and burning out of fuel.