The Role of Nitrous Oxide in the Mechanism of Thermal Nitric Oxide Formation within Flame Temperature Range

Tomeczek, J.; Gradoń, B.

doi:10.1080/00102209708935658

Cited by 43 publications

(23 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The temperature was measured using a removable Pt-RhPt thermocouple placed in the center of the reactor. During previous experiments [13,29] in which a similar reactor technique was used, the temperature measured in this way was found to represent the reactor wall temperature. Thus, the temperatures of samples and the heating period were evaluated on the basis of a measured value based on heat transfer equations solved numerically.…”

Section: Methodsmentioning

confidence: 99%

Investigations of the reduction of NO to N2 by reaction with Fe under fuel-rich and oxidative atmosphere

Lasek

2014

Heat Mass Transfer

View full text Add to dashboard Cite

The limitation of nitrogen oxides (NO x ) emissions from stationary combustion chambers is still an important issue in the field of the natural environment protection. This paper describes the reduction of NO x in the presence of iron. A few new aspects of research describing the utilization of iron as an additive that influences NO x reduction at high temperatures are presented. In particular, the influence of the excess air number (k) on the NO x removal efficiency in the presence of Armco iron was determined. A [50 % increase in the efficiency was achieved at k = 0.6. The research was conducted using N 2 / NO mixed with a flue gas from carbon monoxide combustion. In addition, a correction factor (Arrhenius-type empirical equation) was determined, which enabled the calculation of the oxygen influence on the inhibition of the de-NO x reaction in the presence of iron. The NO x reduction was also tested using bearing steel samples. Finally, the use of iron in de-NO x processes under different combustion conditions is briefly reviewed and analyzed.

show abstract

Section: Methodsmentioning

confidence: 99%

Investigations of the reduction of NO to N2 by reaction with Fe under fuel-rich and oxidative atmosphere

Lasek

2014

Heat Mass Transfer

View full text Add to dashboard Cite

show abstract

“…Kinetic constants of the above reactions are presented in scientific papers Miller & Bowman, 1989). A detailed review of the kinetic constants of thermal NOs formation are presented in the Ph.D. dissertation by Gradoń (2003), while the issues of the thermal mechanism are included in the papers by, among others: Fenimore, 1971;Johnsson et al, 1992;Bowman, 1973;Sarofim & Pohl, 1973;de Soete, 1975;Malte & Pratt, 1977;Fenimore & Fraenkel, 1981;Glarborg et al, 1986;Miller & Bowman, 1989;Muzio et al, 1990;Glarborg et al, 1992;Williams et al, 1992;Tomeczek & Gradoń, 1997.…”

Section: Zeldowicz Mechanismmentioning

confidence: 99%

“…For temperatures above 1770 K, NO is mainly formed through the Zeldowicz mechanism (Reactions 2 and 3) which is controlled by the (2). The kinetic constants of the extended thermal mechanism are included in the papers by Gradoń, 1997 andGradoń, 2003.…”

Section: Extended Thermal Mechanismmentioning

confidence: 99%

“…The basic component of nitrogen oxide emissions in high-temperature processes is NO. Complex mechanisms of nitrogen oxide formation during coal combustion have been classified using the source of nitrogen and divided into two basic groups (Zeldowicz, 1946;Fenimore & Jones, 1957;Fenimore, 1971;Johnsson et al, 1992;Bowman, 1973;Sarofim & Pohl, 1973;de Soete, 1975;Malte & Pratt, 1977;Levy et al, 1978;Fenimore & Fraenkel, 1981;Heyd, 1982;Miller et al, 1984;Glarborg et al, 1986;Fong & Peters, 1986;Niksa, 1988;Cheng et al, 1989;Miller & Bowman, 1989;Muzio et al, 1990;Glarborg et al, 1992;Williams et al, 1992;Tomeczek & Gradoń, 1997;Williams et al, 1997):…”

Section: Mechanisms Of Nitrogen Oxide Formation During Coal Combustionmentioning

confidence: 99%

See 1 more Smart Citation

Fuel-N Conversion to NO, N2O and N2 During Coal Combustion

Gil¹

2012

Fossil Fuel and the Environment

View full text Add to dashboard Cite

“…The fuel NO is formed from fuel nitrogen in the front of the flame and its amount increases with the growing concentration of oxygen. The concentration of fuel NO in the global emission of nitrogen oxides grows with the decrease of the heat release of the combustion chamber [2,4,5]. NO x reduction is important subject of experimental and numerical studies [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of Natural Gas Combustion in a Pusher Furnace

Wilk

Straka

Szajding

et al. 2012

mafe

View full text Add to dashboard Cite

Nomenclature:α, β -constants dependent on the properties of the interface between the modeled region and its surroundings, C -radiation diffusion term computed from local concentration of H 2 O and CO 2 , D i,m -laminar diffusion, e -gas energy per unit mass, g H -external force acting on the fluid, the gravity, Sc t -turbulent Schmidt number, Sc t = 0.7, u i -gas velocity components, Y i -mass fraction of the i-th component. Greek Letters:κ -Poisson constant, μ eff -effective friction coefficient, ρ -flue gas mass density.

show abstract

The Role of Nitrous Oxide in the Mechanism of Thermal Nitric Oxide Formation within Flame Temperature Range

Cited by 43 publications

References 27 publications

Investigations of the reduction of NO to N2 by reaction with Fe under fuel-rich and oxidative atmosphere

Investigations of the reduction of NO to N2 by reaction with Fe under fuel-rich and oxidative atmosphere

Fuel-N Conversion to NO, N2O and N2 During Coal Combustion

Numerical Study of Natural Gas Combustion in a Pusher Furnace

Contact Info

Product

Resources

About