Article
Energy & Fuels
A. Mack, J. Maier, G. Scheffknecht
Summary: This study aims to gather experimental data on the combustion behavior of single wood particles under oxyfuel conditions. The focus is to understand how the application of oxyfuel technology affects the conditions in fuel beds and provide data for simulations. Combustion experiments were conducted on spherical particles of different sizes with varying oxygen concentrations in different atmospheres. The results showed that combustion times were generally shorter under oxyfuel conditions compared to air conditions, and increasing oxygen concentration further reduced combustion durations. The temperatures of the flame and the particles increased with higher oxygen concentration, with smaller particles showing higher values. Steam concentration had a varying effect on temperatures.
Article
Thermodynamics
Piyush Verma, Zhiwei Yang, Richard L. Axelbaum
Summary: Integrated SOx and NOx removal using a direct contact cooler is a promising method for cleaning coal combustion flue gas. This study presents a novel design that recovers flue gas heat while removing SOx and NOx. Modeling results show that an optimized design can enhance removal efficiency and remove SO2 through liquid-phase reaction.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Chemistry, Physical
J. Akil, C. Ciotonea, S. Siffert, S. Royer, L. Pirault-Roy, R. Cousin, C. Poupin
Summary: Oxyfuel combustion is a promising technology for producing CO2 rich effluents, but the removal of CO and NOx during storage and valorization is necessary. CoCuAlOx mixed oxide derived from hydrotalcite like preparation was used as a catalyst for NO-CO abatement in a gas stream similar to that in oxyfuel combustion. The best catalytic performances were achieved with a CoCuAlOx catalyst with a Co/Cu ratio of 2. Water was found to have an impact on the catalyst, resulting in a shift towards higher temperature for CO oxidation and a decrease in NO reduction yield.
APPLIED CATALYSIS A-GENERAL
(2023)
Article
Chemistry, Multidisciplinary
M. Bacatelo, F. Capucha, P. Ferrao, F. Margarido
Summary: This study develops a methodological framework to select the most viable CO2 capture technology for a Portuguese cement plant based on multi-criteria assessment. The results show that calcium looping (CaL) technology ranks the highest among the three CO2 capture technologies.
JOURNAL OF CO2 UTILIZATION
(2023)
Article
Energy & Fuels
Jicang Si, Guochang Wang, Ziyun Shu, Xiangtao Liu, Mengwei Wu, Rong Zhu, Jianchun Mi
Summary: This study investigates the effects of different diluents and oxygen concentrations on MILD oxy-combustion, finding that CO2 and H2O dilutions are more beneficial for flameless combustion, while N2 is superior for stable combustion at low oxygen levels. N2 dilution leads to high NOx emissions, while CO2 and H2O dilutions result in lower emissions and more uniform heat transfer characteristics. Additionally, the criteria for flameless MILD combustion proposed by Cavaliere and de Joannon and Wiinning and Wiinning are found to apply under CO2 and H2O dilutions but not under N2 dilution for high oxygen concentrations.
Review
Green & Sustainable Science & Technology
A. G. Olabi, Tabbi Wilberforce, Khaled Elsaid, Enas Taha Sayed, Hussein M. Maghrabie, Mohammad Ali Abdelkareem
Summary: Carbon capture is a key action in mitigating climate change and global warming by reducing carbon emissions. Various process industries, such as cement, iron and steel, oil refinery, and chemicals, are important sources of carbon emissions and provide potential opportunities for carbon capture. However, the main challenge lies in the high cost of implementing carbon capture in process industries.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Energy & Fuels
Christin Pflieger, Katrin Lotz, Nikoline Hilse, Cornelius M. Berger, Martin Schiemann, Paulo Debiagi, Christian Hasse, Viktor Scherer, Martin Muhler
Summary: The catalytic effects of mineral compounds on biomass-derived char were investigated using thermogravimetric analysis in various atmospheres. It was found that K2CO3 and Na2CO3 showed the most significant catalytic effects, while Fe2O3 had a weaker effect. Modeling approaches further quantified the catalytic effects and lowered the apparent activation energy.
Article
Green & Sustainable Science & Technology
Chao Feng, Tao Lin, Rong Zhu, Guangsheng Wei, Kai Dong
Summary: With the progress of industrial development, global CO2 emissions have increased exponentially. The iron and steel industry, although important for economic development, has high CO2 emission intensity. Therefore, reducing CO2 emissions in the iron and steel industry will have a significant impact on overall emission reduction. This study analyzes the influence of oxygen-enriched combustion parameters and converter gas conditions on CO2 concentration and NOx generation in flue gas, and proposes a combustion scheme suitable for CO2 capture.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Thermodynamics
Mais Baqain, Dmitri Neshumayev, Alar Konist
Summary: A part of Estonia's power generation relies on burning oil shale, leading to high emissions of CO2 and pollutants. This paper focuses on the combustion of Ca-rich oil shale in different atmospheres and investigates the formation of NOx and N2O. The experiments show that NOx emissions are affected by the oxygen concentration, while N2O emissions are influenced by both oxygen concentration and bed temperature.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2023)
Article
Engineering, Aerospace
Chengfei Tao, Hao Zhou
Summary: The study evaluated the effects of different gas mediums on combustion instability and NOx emissions control, with CO2 showing the best performance in both aspects. It was found that microjets can effectively reduce combustion instability, lower NOx emissions, and impact flame length.
AEROSPACE SCIENCE AND TECHNOLOGY
(2021)
Article
Thermodynamics
James Frost, Paul Hellier, Nicos Ladommatos
Summary: The use of bioderived drop-in fuels is crucial in reducing fossil fuel usage. This study investigates the combustion and exhaust emissions of lactone fuels, sourced from 2nd generation biomass, in a compression ignition engine. The results show that certain lactone blends exhibit promising ignition qualities and reduce emissions, such as particle mass and nitrogen oxides, compared to unblended fossil diesel.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Thermodynamics
Qian Xiong, Zhangyi Wan, Long Liu, Baolin Zhao
Summary: Dual fuel strategy is a promising way to achieve low-carbon emission for marine engines. The effects of compression ratio, pre-chamber number, and energy proportion of pilot diesel on combustion process and pressure oscillation in natural gas/diesel dual fuel low speed marine engine were investigated. It was found that increasing pre-chamber number effectively reduced the maximum amplitude of pressure oscillation in the main chamber. The optimal energy proportion of pilot diesel was determined to be around 1.0% considering thermal efficiency, pressure oscillation, and NOx emission.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2023)
Article
Thermodynamics
Donghee Kim, Won Yang, Kang Y. Huh, Youngjae Lee
Summary: The study investigated the characteristics and potential of the pressurized oxy-fuel combustion system using unpurified natural gas and pure oxygen, demonstrating successful pilot-scale testing of the system. The heat recovery rate was around 84-86% in all tested cases, and radiative heat transfer was enhanced by flue gas composed mainly of H2O and CO2 at high pressures. Furthermore, the reduction in mean temperature led to decreased NOx concentration, suppressing the formation of thermal NO.
Article
Thermodynamics
Zhichao Chen, Yanyu Qiao, Shuo Guan, Zhenwang Wang, Yu Zheng, Lingyan Zeng, Zhengqi Li
Summary: This study found that under sub-stoichiometric conditions, optimizing the burn-out performance and reducing NOx emissions of a swirl burner can be achieved by adjusting the inner and outer secondary air ratios. It was observed that NO formation can be effectively suppressed in the swirl burner at the beginning of combustion under sub-SR conditions, while larger R-SA values accelerate early combustion and element release, increasing NOx emissions.
Article
Energy & Fuels
Jonghun Lim, Junghwan Kim
Summary: This study designed a process using desalination wastewater to capture and utilize NOx, SO2, and CO2 emissions for cleaner production. The experimental results showed that the proposed process can efficiently capture and utilize these gases with lower costs.
Article
Energy & Fuels
Quang Anh Tran, Rohan Stanger, Wei Xie, Nathan Smith, John Lucas, Terry Wall
Article
Energy & Fuels
Rohan Stanger, Quang Anh Tran, Nathan Smith, Eric Kennedy, Michael Stockenhuber, John Lucas, Terry Wall
Article
Energy & Fuels
Wei Xie, Rohan Stanger, Quang Anh Tran, Nathan Smith, Terry Wall, John Lucas
Article
Energy & Fuels
Rohan Stanger, Quang Anh Tran, Mariah Browne, John Lucas, Minoo Naebe, Murray Height, Terry Wall
Article
Energy & Fuels
Jessica A. Allen, Michael Glenn, Priyanthi Hapugoda, Rohan Stanger, Graham O'Brien, Scott W. Donne
Article
Green & Sustainable Science & Technology
Dunyu Liu, Jing Jin, Ming Gao, Zhibo Xiong, Rohan Stanger, Terry Wall
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2018)
Article
Chemistry, Analytical
Quang Anh Tran, Rohan Stanger, Wei Xie, Nathan Smith, John Lucas, Terry Wall
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2018)
Article
Engineering, Chemical
Dunyu Liu, Jing Jin, Zhibo Xiong, Rohan Stanger, Terry Wall
ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING
(2018)
Article
Energy & Fuels
Soonho Lee, Jianglong Yu, Merrick Mahoney, Priscilla Tremain, Behdad Moghtaderi, Arash Tahmasebi, Rohan Stanger, Terry Wall, John Lucas
Article
Chemistry, Physical
Omid Zabihi, Sajjad Shafei, Seyed Mousa Fakhrhoseini, Mojtaba Ahmadi, Hossein Ajdari Nazarloo, Rohan Stanger, Quang Anh Tran, John Lucas, Terry Wall, Minoo Naebe
Article
Chemistry, Applied
Quang Anh Tran, Rohan Stanger, Wei Xie, Nathan Smith, John Lucas, Terry Wall
FUEL PROCESSING TECHNOLOGY
(2019)
Article
Chemistry, Applied
Soonho Lee, Jianglong Yu, Merrick Mahoney, Arash Tahmasebi, Rohan Stanger, Terry Wall, John Lucas
FUEL PROCESSING TECHNOLOGY
(2019)
Article
Chemistry, Applied
Wei Xie, Rohan Stanger, Quang Anh Tran, Merrick Mahoney, John Lucas, Jianglong Yu, Terry Wall
FUEL PROCESSING TECHNOLOGY
(2019)
Article
Energy & Fuels
Yuxin Yan, Ying Qi, Marc Marshall, W. Roy Jackson, Andrew Stanger, Quang Anh Tran, Rohan Stanger, Alan L. Chaffee
Summary: The study utilizes a mineral-separation process to produce density fractions of low-rank coals with varying maceral group proportions for analysis of their physical and chemical properties. The findings aim to suggest new ways of utilizing the vast Victorian brown coal resource.
Article
Multidisciplinary Sciences
Dunyu Liu, Jing Jin, Ming Gao, Zhibo Xiong, Rohan Stanger, Terry Wall