Advanced Low-Emission Combustion Technologies

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Energy Systems".

Deadline for manuscript submissions: closed (31 December 2023) | Viewed by 1421

Special Issue Editors


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Guest Editor
Istituto di Scienze e Tecnologie per l'Energia e la Mobilità Sostenibili (STEMS)-CNR, Viale Marconi, 4, 80125 Naples, Italy
Interests: low-emission combustion technologies; turbulent combustion modeling; heat transfer modeling; CFD of reactive flows; optical diagnostics; spray atomization
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Guest Editor
Italian National Research Council (CNR), V.le Marconi 4, 80125 Napoli, Italy
Interests: low-emission combustion technologies; alternative fuels; MILD combustion; chemical kinetics; model reduction

Special Issue Information

Dear Colleagues,

Sustainable combustion technologies are key processes for decarbonizing the energy and mobility sectors in the framework of energy transition. Alternative energy carriers with carbon-free or carbon-neutral fuels from renewable sources, such as H2, NH3, methanol and biofuels, are drawing increasing attention due to their features related to net-zero CO2 emissions. The combustion behaviors of these new alternative energy carriers are different from conventional fuels, especially in relation to their ignition/oxidation times, flame stability, pollutant emissions, etc. Several drawbacks related to the utilization of alternative fuels can be solved with advanced combustion technologies. Advanced low-emission combustion technologies including MILD combustion, oxy-fuel combustion, sequential combustion for GT applications, NOx and SOx reduction, catalytic combustion and chemical looping for new alternative fuels are promising methods.

This Special Issue aims to report on the latest technological advances in low-emission combustion technologies for alternative energy carriers (such as H2, NH3, methanol, biofuels and metals) and serves as a platform for experimental and modeling analyses of advanced combustion technologies for low-carbon emissions.

Topics include, but are not limited to:

• Low-emission combustion technologies, including low-carbon and hydrogen-based fuels, MILD combustion, oxy-fuel combustion, chemical looping, and NOx and SOx reduction;

• Reaction kinetics, including the kinetics of hydrocarbons, oxygenated fuels and alternative energy carriers, the formation of pollutants, elementary reactions, and mechanism generation and reduction;

• Laminar and turbulent flames, including experiments, theories and modeling applied to ignition, propagation, extinction/stabilization and instabilities;

• Solid fuel combustion, including fundamental aspects related to pyrolysis, oxidation, gasification and ash formation from coal, biomass and wastes, as well as the combustion of propellants and metals;

• Pollutant emission treatment and abatement;

• Diagnostic technologies, including flow velocity, species and temperature measurements, etc.

Prof. Dr. Giancarlo Sorrentino
Dr. Maria Virginia Manna
Guest Editors

Manuscript Submission Information

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Keywords

  • advanced combustion technologies
  • MILD combustion
  • chemical looping
  • oxy-fuel combustion
  • net-zero emissions
  • alternative energy carriers
  • diagnostic techniques

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Published Papers (1 paper)

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Research

16 pages, 9891 KiB  
Article
Numerical and Experimental Study on Preheating Burner Characteristics for Peak Shaving
by Guojia Yao, Xiaoju Han, Hong Tang and Jianxin Qu
Processes 2024, 12(2), 346; https://doi.org/10.3390/pr12020346 - 6 Feb 2024
Cited by 1 | Viewed by 1010
Abstract
With the proportion of renewable energy power in the electricity market gradually increasing, coal-fired power is transforming from primary to basic power, with it providing peak and frequency shaving. However, most current methods for peaking below 50% load have been applied industrially, sacrificing [...] Read more.
With the proportion of renewable energy power in the electricity market gradually increasing, coal-fired power is transforming from primary to basic power, with it providing peak and frequency shaving. However, most current methods for peaking below 50% load have been applied industrially, sacrificing the efficiency of the unit. This is not in line with the goals of energy conservation and emission reduction. Therefore, this study proposes a new preheating-based peaking method. This study experimentally and simulatively explores the flow characteristics, pyrolysis gas law, and NOx emission characteristics of a preheating burner at 40–100% load. The results show that the burner has a significant preheating effect, producing high-temperature char and large amounts of pyrolysis gas. As the load decreases, the burner exit temperature increases, whereas the airflow stiffness decreases. There is little variation in the pyrolysis gas concentration between 40% and 100% loads. The NOx concentration at the burner outlet increases and the reduction efficiency decreases with decreasing load. At 40% load, NOx emissions are 91.53 mg/Nm3 and the reduction efficiency reaches 95.9%. Therefore, preheating is an economical, stable, and low-NOx-emission-peaking method. This study provides theoretical guidance for the application of preheating burners for the 40–100% load peaking of coal-fired units. Full article
(This article belongs to the Special Issue Advanced Low-Emission Combustion Technologies)
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