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Title: Reducing nitrogen oxides in the flue gases from gas/oil-fired boilers at high-capacity power stations

Abstract

Investigations have been conducted at gas/oil-fired heat and power stations and central stations, the furnace units at which have been modified, to check measures for reducing emission of nitrogen oxides. High-sulfur oil was burned in all the boilers, the fuel's nitrogen content being less than 0.5%. Excess air was determined in the gas pass before the first convective superheater (or in the cross connection to the second superheater). Air leakage was determined in the circuit from the burners to the point at which gases were removed for recirculation. The content of nitrogen oxides was determined in the same gas pass. Nitrogen oxides analysis was conducted on the spot by a linear-colorimetric method. The indicator tubes were calibrated against a standard. Individual measurements were checked by a chemical method using Griess reagent. To investigate the various ways of lowering NO/sub x/ emission the parameters of the plant required for comprehensive assessment of the effect attained were recorded (effectiveness measures to reduce NO/sub x/, evaluation of reliability, economy, flexibility, etc). These experiments showed that redistribution of the air or fuel through burner rows lowers by 20% the concentration of NO/sub x/ in the combustion products. Employing two-stage combustion of oil in vortexmore » burners, in the furnace of the TP-82 boiler with the opposite wall forced draft units, and when using the KhF TsKB-VTI burners with recirculating gases supplied to the middle duct (PK-19 boiler) leads to 20 to 50% reduction in NO/sub x/ emission. The above combustion arrangement gives the greatest reduction in NO/sub x/ emission. However, its use cannot be considered separately from the features of the processes taking place when burning high-sulfur oil.« less

Authors:
; ; ; ;
Publication Date:
OSTI Identifier:
6561658
Resource Type:
Journal Article
Journal Name:
Therm. Eng. (USSR) (Engl. Transl.); (United States)
Additional Journal Information:
Journal Volume: 24:9; Other Information: Translated from Teploenergetika; 24: No. 9, 74-77(1977)
Country of Publication:
United States
Language:
English
Subject:
20 FOSSIL-FUELED POWER PLANTS; BURNERS; OPERATION; FLUE GAS; DENITRIFICATION; FOSSIL-FUEL POWER PLANTS; FUEL OILS; COMBUSTION; NITROGEN OXIDES; AIR POLLUTION CONTROL; DESIGN; FURNACES; NATURAL GAS; USSR; CHALCOGENIDES; CHEMICAL REACTIONS; ENERGY SOURCES; EUROPE; FLUIDS; FOSSIL FUELS; FUEL GAS; FUELS; GAS FUELS; GASEOUS WASTES; GASES; NITROGEN COMPOUNDS; OILS; ORGANIC COMPOUNDS; OTHER ORGANIC COMPOUNDS; OXIDATION; OXIDES; OXYGEN COMPOUNDS; PETROLEUM PRODUCTS; POLLUTION CONTROL; POWER PLANTS; THERMAL POWER PLANTS; THERMOCHEMICAL PROCESSES; WASTES; 200202* - Fossil-Fueled Power Plants- Waste Management- Noxious Gas & Particulate Emissions

Citation Formats

Gorbanenko, A D, Fanas'eva, L A, Bozhevol'nova, E V, Krutiev, V A, and Shtal'man, S C. Reducing nitrogen oxides in the flue gases from gas/oil-fired boilers at high-capacity power stations. United States: N. p., 1978. Web.
Gorbanenko, A D, Fanas'eva, L A, Bozhevol'nova, E V, Krutiev, V A, & Shtal'man, S C. Reducing nitrogen oxides in the flue gases from gas/oil-fired boilers at high-capacity power stations. United States.
Gorbanenko, A D, Fanas'eva, L A, Bozhevol'nova, E V, Krutiev, V A, and Shtal'man, S C. 1978. "Reducing nitrogen oxides in the flue gases from gas/oil-fired boilers at high-capacity power stations". United States.
@article{osti_6561658,
title = {Reducing nitrogen oxides in the flue gases from gas/oil-fired boilers at high-capacity power stations},
author = {Gorbanenko, A D and Fanas'eva, L A and Bozhevol'nova, E V and Krutiev, V A and Shtal'man, S C},
abstractNote = {Investigations have been conducted at gas/oil-fired heat and power stations and central stations, the furnace units at which have been modified, to check measures for reducing emission of nitrogen oxides. High-sulfur oil was burned in all the boilers, the fuel's nitrogen content being less than 0.5%. Excess air was determined in the gas pass before the first convective superheater (or in the cross connection to the second superheater). Air leakage was determined in the circuit from the burners to the point at which gases were removed for recirculation. The content of nitrogen oxides was determined in the same gas pass. Nitrogen oxides analysis was conducted on the spot by a linear-colorimetric method. The indicator tubes were calibrated against a standard. Individual measurements were checked by a chemical method using Griess reagent. To investigate the various ways of lowering NO/sub x/ emission the parameters of the plant required for comprehensive assessment of the effect attained were recorded (effectiveness measures to reduce NO/sub x/, evaluation of reliability, economy, flexibility, etc). These experiments showed that redistribution of the air or fuel through burner rows lowers by 20% the concentration of NO/sub x/ in the combustion products. Employing two-stage combustion of oil in vortex burners, in the furnace of the TP-82 boiler with the opposite wall forced draft units, and when using the KhF TsKB-VTI burners with recirculating gases supplied to the middle duct (PK-19 boiler) leads to 20 to 50% reduction in NO/sub x/ emission. The above combustion arrangement gives the greatest reduction in NO/sub x/ emission. However, its use cannot be considered separately from the features of the processes taking place when burning high-sulfur oil.},
doi = {},
url = {https://www.osti.gov/biblio/6561658}, journal = {Therm. Eng. (USSR) (Engl. Transl.); (United States)},
number = ,
volume = 24:9,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 1978},
month = {Sun Jan 01 00:00:00 EST 1978}
}