REGULATION OF EMISSIONS OF NITROGEN OXIDES FROM COMBUSTION OF HEAVY FUEL OIL IN BOILERS

Dieser Artikel beschreibt die Regulierung von Emissionen von Stickstoffoxiden bei der Verbrennung von Heizöl in den Kesseln. Auch gibt es einen Vergleich der Heizölverbrennungsemissionen bei der Verbrennung von Brenngas . Die Verordnung ist durch Abschalten oder auf bestimmten Brennern drehen. Methoden der Ausführung wurde an der Küste durchgeführt - Chelny CHP Kessel TGM - 84

Education and ways of reducing nitrogen oxides in the boiler tg-104 with a direct-flow-vortex burners and the peripheral gas supply

This article deals with the distribution of temperature and incident heat flux on the display surface boiler heating TG-104 at work at the Urengoy gas and the thermal efficiency of the burners to reduce the formation of nitrogen oxides. The temperature of the combustion products was measured using an optical method and thermocouple contact method. The incident heat fluxes measured by the radiometer the full radiation. Burned fuel - natural gas according to GOST 30319.1-96 with the lower heat of combustion 35146 kJ/m3

Features of application of the methane-hydrogen fraction as fuel for thermal power plant boiler

The methane-hydrogen fraction is a gaseous hydrocarbon by-product during oil processing for obtaining petroleum products. Until recently, the methane-hydrogen fraction was used as furnace oil in internal technological processes at a refinery. Some of the low-calorie methane-hydrogen fraction was burned in flares. Driven by the prospect of the methane-hydrogen fraction use as a fuel alternative to natural gas for burning in thermal power plants boilers, it became necessary to study the methane-hydrogen fraction combustion processes in large volumes. The conversion of ON-1000/1 and ON-1000/2 furnaces from the combustion of the methane- hydrogen fraction with combustion heat of 25.45 MJ/m3 to the combustion of the composition with combustion heat of 18.8 MJ/m3 leads to a decrease in temperature in the flame core for 100 °C as an average. The intensity of flame radiation on the radiant tubes decreases. Therefore, the operation of furnaces during combustion of methane-hydrogen fraction with a low heat of combustion at the gas oil hydro-treating unit is carried out only with a fresh catalyst, which allows lower flame temperatures in the burner.The experiments to determine the concentration of nitrogen oxides NOx and the burning rate w of the methane-hydrogen fraction in the ON-1000/1 furnace and natural gas in the TGM-84A boiler, depending upon the heat of combustion Qnr were carried out. The obtained results showed that the increase in the hydrogen content Н2 from 10.05 % to 18.36% (by mass) results in an increase in the burning rate w by 45%. The burning rate of natural gas with methane CH4 content of 98.89% in the TGM-84A boiler is 0.84 m/s, i.e. it is 2.5 times lower than the burning rate of the methane- hydrogen fraction with H2 content of 10.05%. The distributions of heat flux from the flame qf over the burner height h in the TGM-84A boiler were obtained in case of natural gas burning and calculation of burning of the methane-hydrogen fraction with a hydrogen content of 10.05% and methane of 28.27%. The comparison of the obtained data shows that burning of methane- hydrogen fraction causes an increase in the incident heat flux qf at the outlet of the burner