Abstract
The present project, whose abbreviated name is RENOX, has the aim of reducing NO{sub x} emissions from the combustion of hard coals or coals with low volatile matter contents. It is applied to the combustion of these coals in arc boilers (or ''U'' boilers), where the necessary combination of long presence times and high hearth temperatures facilitates the high NO{sub x} levels reached. The intended reduction in emissions is approached through the application of primary combustion measures, also known as adjustment or refining of combustion. This solution is adopted for two reasons: due to its efficiency in environmental and economic terms, and because it is an unavoidable step if the levels to be attained require the installation of specific gas crubbing systems (secondary measures). The practical nature of RENOX has led to the development of the project in two phases, corresponding to two logical stages: phase 1, associated with the RNA project, on the characterization of emissions and combustion, complex numeric modelling of flows inside the boiler, and determination of the viability and scope of the optimization of emissions, and phase 2, the OPTINOXproject, which follows the methodology and lessons of the first phase and, as a natural continuation of
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Citation Formats
None.
Reduction of NO{sub x} emissions from the combustion of hard coals ''RENOX''; Reduccion de Emisiones de NO{sub x} en la combustion de Carbones Antracitosos ''RENOX''.
Spain: N. p.,
2000.
Web.
None.
Reduction of NO{sub x} emissions from the combustion of hard coals ''RENOX''; Reduccion de Emisiones de NO{sub x} en la combustion de Carbones Antracitosos ''RENOX''.
Spain.
None.
2000.
"Reduction of NO{sub x} emissions from the combustion of hard coals ''RENOX''; Reduccion de Emisiones de NO{sub x} en la combustion de Carbones Antracitosos ''RENOX''."
Spain.
@misc{etde_20154714,
title = {Reduction of NO{sub x} emissions from the combustion of hard coals ''RENOX''; Reduccion de Emisiones de NO{sub x} en la combustion de Carbones Antracitosos ''RENOX''}
author = {None}
abstractNote = {The present project, whose abbreviated name is RENOX, has the aim of reducing NO{sub x} emissions from the combustion of hard coals or coals with low volatile matter contents. It is applied to the combustion of these coals in arc boilers (or ''U'' boilers), where the necessary combination of long presence times and high hearth temperatures facilitates the high NO{sub x} levels reached. The intended reduction in emissions is approached through the application of primary combustion measures, also known as adjustment or refining of combustion. This solution is adopted for two reasons: due to its efficiency in environmental and economic terms, and because it is an unavoidable step if the levels to be attained require the installation of specific gas crubbing systems (secondary measures). The practical nature of RENOX has led to the development of the project in two phases, corresponding to two logical stages: phase 1, associated with the RNA project, on the characterization of emissions and combustion, complex numeric modelling of flows inside the boiler, and determination of the viability and scope of the optimization of emissions, and phase 2, the OPTINOXproject, which follows the methodology and lessons of the first phase and, as a natural continuation of this, deals with the design, development, manufacturing and validation of a computerized system that processes real time data on the boiler where it is installed to monitor, supervise and control the commercial operation of the plant, optimizing its combustion efficiency and/or NO{sub x} emissions. The practical objective of this project is represented by the construction of a validated prototype to demonstrate the OPTINOX system, which is capable of determining operating and control strategies that can minimize NO{sub x} emissions without unfavourably affecting the productivity and specific consumption of the units. Phase 1 development activities took place in groups 3, 4 and 5 of Compostilla II thermal power plant. The RNA prroject demonstrated the efficiency of the selected primary measures, assembled in a knowledge bank obtained through the performance of real parametric tests and the use of CFD codes. With the use of this knowledge bank, the processing of parameters obtained from local combustion monitoring instruments, and the use of powerful artificial intelligence tools(neuronal networks, genetic algorithms and fuzzy logic expert systems), the OPTINOX system was designed and manufactured. This second part of the project was applied and installed in group 3 of this power plant. The OPTINOX system has a fuylly open design and is easily adaptable to any type of boiler (not only arc boilers), so it can be applied in the optimization of productivity and/or NO{sub x} emissions with any boiler-coal combination for which previous knowledge is available on how to optimize combustion. This knowledge bank can be achieved following the application of the same methodology for the acquirement of knowledge and use of tools used in the first part of the RENOX project. The application of this project in ENDESA group is considered to be achieving a more than 1% (one) improvement in full load combustion efficiency and a reduction of up to 30% (thirty) in NO{sub x} emission levels, depending on the operating scenario, without this appreciable affecting specific consumption levels. (Author)}
place = {Spain}
year = {2000}
month = {Jul}
}
title = {Reduction of NO{sub x} emissions from the combustion of hard coals ''RENOX''; Reduccion de Emisiones de NO{sub x} en la combustion de Carbones Antracitosos ''RENOX''}
author = {None}
abstractNote = {The present project, whose abbreviated name is RENOX, has the aim of reducing NO{sub x} emissions from the combustion of hard coals or coals with low volatile matter contents. It is applied to the combustion of these coals in arc boilers (or ''U'' boilers), where the necessary combination of long presence times and high hearth temperatures facilitates the high NO{sub x} levels reached. The intended reduction in emissions is approached through the application of primary combustion measures, also known as adjustment or refining of combustion. This solution is adopted for two reasons: due to its efficiency in environmental and economic terms, and because it is an unavoidable step if the levels to be attained require the installation of specific gas crubbing systems (secondary measures). The practical nature of RENOX has led to the development of the project in two phases, corresponding to two logical stages: phase 1, associated with the RNA project, on the characterization of emissions and combustion, complex numeric modelling of flows inside the boiler, and determination of the viability and scope of the optimization of emissions, and phase 2, the OPTINOXproject, which follows the methodology and lessons of the first phase and, as a natural continuation of this, deals with the design, development, manufacturing and validation of a computerized system that processes real time data on the boiler where it is installed to monitor, supervise and control the commercial operation of the plant, optimizing its combustion efficiency and/or NO{sub x} emissions. The practical objective of this project is represented by the construction of a validated prototype to demonstrate the OPTINOX system, which is capable of determining operating and control strategies that can minimize NO{sub x} emissions without unfavourably affecting the productivity and specific consumption of the units. Phase 1 development activities took place in groups 3, 4 and 5 of Compostilla II thermal power plant. The RNA prroject demonstrated the efficiency of the selected primary measures, assembled in a knowledge bank obtained through the performance of real parametric tests and the use of CFD codes. With the use of this knowledge bank, the processing of parameters obtained from local combustion monitoring instruments, and the use of powerful artificial intelligence tools(neuronal networks, genetic algorithms and fuzzy logic expert systems), the OPTINOX system was designed and manufactured. This second part of the project was applied and installed in group 3 of this power plant. The OPTINOX system has a fuylly open design and is easily adaptable to any type of boiler (not only arc boilers), so it can be applied in the optimization of productivity and/or NO{sub x} emissions with any boiler-coal combination for which previous knowledge is available on how to optimize combustion. This knowledge bank can be achieved following the application of the same methodology for the acquirement of knowledge and use of tools used in the first part of the RENOX project. The application of this project in ENDESA group is considered to be achieving a more than 1% (one) improvement in full load combustion efficiency and a reduction of up to 30% (thirty) in NO{sub x} emission levels, depending on the operating scenario, without this appreciable affecting specific consumption levels. (Author)}
place = {Spain}
year = {2000}
month = {Jul}
}