Technologies for the nitrogen oxides reduction from flue gas: A review

2020 ◽  
Vol 714 ◽  
pp. 136712 ◽  
Author(s):  
Fatemeh Gholami ◽  
Martin Tomas ◽  
Zahra Gholami ◽  
Mohammadtaghi Vakili
Keyword(s):  
Nitrogen Oxides ◽  
Flue Gas ◽  
Nitrogen Oxides Reduction

Exhaust nitrogen oxides reduction system (ExNORS)

2021 ◽  
pp. 36-38
Author(s):  
E. V. OVCHINNIKOV ◽  
S. Yu. UYUTOV ◽  
V. A. KRYUCHKOV
Keyword(s):  
Nitrogen Oxides ◽  
Reduction System ◽  
Nitrogen Oxides Reduction

scholarly journals RESEARCH OF INFLUENCE OF AIR TEMPERATURE ON THE LEVEL OF NITROGEN OXIDES IN SMOKE GASES OF BOILER PLANTS

2019 ◽  
Vol 9 (4) ◽  
pp. 27-32
Author(s):  
Olga A. BALANDINA ◽  
Svetlana M. PURING
Keyword(s):  
Mathematical Modeling ◽  
Nitric Oxide ◽  
Nitrogen Oxides ◽  
Flue Gas ◽  
Software Package ◽  
Flame Temperature ◽  
Combustion Process ◽  
Flue Gases ◽  
Oxidizing Agent ◽  
Mixture Formation

The analysis of the values of the concentrations of the formed nitrogen oxides and the temperatures of the jet plume under various conditions of mixture formation is carried out. The plots of the distribution of torch temperatures and concentrations of nitric oxide in the calculated area for oxidizer temperatures of 20, 60, 100, 150, and 200 ° C were obtained and analyzed. Mathematical modeling of the gaseous fuel combustion process was carried out using the FlowVision software package. An analysis of the results showed that a decrease in the temperature of the air supplied as an oxidizing agent leads to a significant decrease in the concentration of nitrogen oxides in flue gases, while not significantly affecting the change in the flame temperature. The research results can be used to solve the problems of optimizing boiler plants, in order to reduce harmful flue gas emissions. Further modeling is planned to determine the dependence of the influence of various factors on the degree of formation of nitrogen oxides in the flue gases of boiler plants.

scholarly journals THE INVESTIGATION OF THE EFFICIENCY OF THE NITROGEN OXIDES REDUCTION BY ADVANCED REBURNING METHOD APPLICATION WITH THE COAL DUST AS A REBURNING FUEL

2017 ◽  
Vol 39 (5) ◽  
pp. 91-96 ◽  
Author(s):  
S. G. Kobzar ◽  
A. A. Khalatov
Keyword(s):  
Nitrogen Oxides ◽  
Coal Combustion ◽  
Catalytic Reduction ◽  
Coal Dust ◽  
Single Stage ◽  
Nitrogen Oxides Reduction

The investigation of the influence of the low reactivity reburning fuel coal dust on the simultaneous processes of the nitrogen oxides reduction in accordance with the mechanisms Reburning and selective non-catalytic reduction was carried out. The study showed the possibility to reduce the nitrogen oxides emissions up to 80 % compared with single-stage coal combustion.

Modeling the Nitrogen Oxides Reduction in Selective Catalytic Reactors and Identification of the Kinetic Parameters

2000 ◽  
Vol 33 (10) ◽  
pp. 1031-1036
Author(s):  
S. Bittanti ◽  
A. De Marco ◽  
G. Fittipaldi ◽  
S. Malloggi ◽  
W. Prandoni ◽  
...  
Keyword(s):  
Nitrogen Oxides ◽  
Kinetic Parameters ◽  
Catalytic Reactors ◽  
Nitrogen Oxides Reduction

MO−ZrO2 catalysts for nitrogen oxides reduction by hydrocarbons in oxygen excess. Preparation and properties

1996 ◽  
Vol 59 (1) ◽  
pp. 125-133 ◽  
Author(s):  
A. S. Ivanova ◽  
G. M. Alikina ◽  
L. P. Solovyova ◽  
V. P. Ivanov ◽  
S. N. Trukhan ◽  
...  
Keyword(s):  
Nitrogen Oxides ◽  
Oxygen Excess ◽  
Nitrogen Oxides Reduction

Biological removal of NOx from flue gas

2004 ◽  
Vol 50 (6) ◽  
pp. 9-15 ◽  
Author(s):  
R. Kumaraswamy ◽  
G. Muyzer ◽  
J.G. Kuenen ◽  
M.C.M. Loosdrecht
Keyword(s):  
High Temperature ◽  
Nitrogen Oxides ◽  
Flue Gas ◽  
Biological Process ◽  
Complex Reaction ◽  
Reaction Sequence ◽  
Biological Removal ◽  
Physico Chemical

BioDeNOx is a novel integrated physico-chemical and biological process for the removal of nitrogen oxides (NOx) from flue gas. Due to the high temperature of flue gas the process is performed at a temperature between 50-55°C. Flue gas containing CO2, O2, SO2 and NOx, is purged through Fe(II)EDTA2- containing liquid. The Fe(II)EDTA2- complex effectively binds the NOx; the bound NOx is converted into N2 in a complex reaction sequence. In this paper an overview of the potential microbial reactions in the BioDeNOx process is discussed. It is evident that though the process looks simple, due to the large number of parallel potential reactions and serial microbial conversions, it is much more complex. There is a need for a detailed investigation in order to properly understand and optimise the process.

Nanocomposites Based Upon Alumina and Zirconia Pillared Clays Loaded with Transition Metal Cations and Clusters of Precious Metals: Synthesis, Properties and Catalysis of NOx Selective Reduction by Hydrocarbons

1999 ◽  
Vol 581 ◽  
Author(s):  
Vladislav A. Sadykov ◽  
R. V. Bunina ◽  
G. M. Alikina ◽  
V. P. Doronin ◽  
T. P. Sorokina ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Nitrogen Oxides ◽  
Transition Metal ◽  
Catalytic Properties ◽  
Precious Metals ◽  
Selective Reduction ◽  
Pillared Clays ◽  
Active Components ◽  
Synthesis Properties ◽  
Nitrogen Oxides Reduction

ABSTRACTThermally stable alumina and zirconia pillared clays loaded with copper and cobalt cations and silver nanoparticles were synthesized. The structural and surface features of these nanosystems were studied and compared with those of bulk analogs -partially stabilized zirconias and γ-alumina loaded with the same active components. Specificity of the catalytic properties of nanocomposites in the reactions of nitrogen oxides reduction by propane, propylene and decane in the excess of oxygen appears to be determined both by the degree of interaction between pillars and active components and the type of reducing agent.

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