Results 261 to 270 of about 45,009 (315)

Modelling of In-Line Low-NOX Calciners—NOX Emission

Chemical Engineering Research and Design, 2003
The influence of the air combustion mixing into the main flow, operating conditions and fuel type on the level of NO emission in the in-line low-NO x calciners was investigated. The analysis was carried out using a heterogeneous mathematical model based on non-isothermal diffusion-reaction models for char combustion and limestone calcination.
I. Iliuta, K. Dam-Johansen, A. Jensen
openaire   +1 more source

Nonlinear modeling of industrial boiler NOx emissions

Journal of the Air & Waste Management Association, 2022
Pollutant emissions into the atmosphere are recognized as a significant problem in fossil fuel combustion. The pollution emission measurement in industrial boilers is difficult and expensive but fundamental for monitoring and controlling. Frequently continuous emissions monitoring (CEM) system is out of service or useless due to obsolescence, high ...
Guillermo Ronquillo-Lomeli, Noé Amir Rodríguez-Olivares, Leonardo Barriga-Rodríguez, Antonio Ramírez-Martínez, Jorge Alberto Soto-Cajiga, Luciano Nava-Balanzar   +5 more
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NOx Chemistry and Emissions — I

2000
Nitrous oxide (N2O) concentrations in the atmosphere increase at an estimated rate of 0.7–0.8 ppb per year. The combustion of solid fuels and waste at lower temperatures (750–900 °C) constitutes a significant source of N2O. During stages of a coal particle combustion (pyrolysis-devolatilisation and char combustion) both volatile-N and char- N are ...
K. Svoboda, J. Cermák, V. Veselý
openaire   +1 more source

Contributions of aircraft emissions to the atmospheric NOx content

Atmospheric Environment, 1997
Abstract The relative contribution of aircraft emissions to the total atmospheric NOx content is studied by means of the atmosphere general circulation model ECHAM, which was extended by a simplified (linear) NOx chemistry module with NOx and HNO3 as prognostic variables.
Köhler, I., Sausen, R. (Vortragender), Reinberger, R.   +2 more
openaire   +3 more sources

Computational investigation of NOx emission in biogas combustion

Environmental Science and Pollution Research, 2023
Landfills and anaerobic digesters in the waste treatment processes generate biogas. Biogas can be used as a fuel and excess biogas is typically burned in a flare to reduce the greenhouse effect. However, burning biogas produces several pollutants, including CO2, NOx, and SO2.
Janaka Bandara, Mahinsasa Narayana, Christoph Bayer   +2 more
openaire   +2 more sources

Atmospheric dynamics of NOx emission controls

Science of The Total Environment, 1982
Abstract Fundamental physical and chemical processes influencing the effectiveness of oxides of nitrogen (NO x ) air pollution controls are surveyed in this paper. Phenomenological descriptions are treated for some of the main features analyzed in recent research work.
openaire   +1 more source

On the road to NOx emissions trading

The Electricity Journal, 1995
Abstract With costly emission reductions looming, a national trading program in SO 2 emissions as a precedent, and a climate of increasing acceptance of emissions trading, many states are now considering emissions trading a viable option. States should take decisive actions to develop innovative, least-cost programs for ozone reduction before the ...
Susan M. Tikalsky, Joseph M. Kramer, Robert Patrick   +2 more
openaire   +1 more source

NOx Emission in In-line Low-NOx Calciners - A Theoretical Study

International Journal of Chemical Reactor Engineering, 2003
Abstract - The present contribution is a continuation of our endeavor in developing mathematical models for In-Line Low-NOx calciners. The objective of the present work is to obtain new information about NO formation and reduction in In-Line Low-NOx calciners.
Ion Iliuta, Maria Iliuta
openaire   +1 more source

Adaptive predictive control of combustor NOx emissions

Control Engineering Practice, 1999
Abstract The design and implementation of an adaptive predictive controller for oxides of nitrogen (NOx) emissions from gas turbine combustors is considered in this paper. Predictive control techniques with both fixed and adaptive parameters are introduced.
G.P. Liu, S. Daley
openaire   +1 more source

Emission of NOx from urine-treated pasture

Environmental Pollution, 1987
Emission of NO(x) from urine-treated pasture was determined using a system of enclosures coupled to a chemiluminescence NO(x) analyser. Rates of emission ranged from 0 to 190 microg NO(x) - Nm(-2)h(-1), with a mean of 43 microg N m(-2) h(-1). The lowest rates were associated with periods of heavy or persistent rain.
P, Colbourn, J C, Ryden, G J, Dollard
openaire   +2 more sources