Article
Environmental Sciences
Viktor Alexandrovich Kuznetsov, Daria Mikhailovna Bozheeva, Andrey Viktorovich Minakov
Summary: Combustion or gasification of coal in a nitrogen-free environment is a promising technology for reducing the carbon footprint. This study numerically investigates the oxy-gasification processes of pulverized coal in a CO2-H2O-O-2 environment and examines the influence of various factors on the physicochemical processes and syngas composition. The results show that increasing oxygen concentration in the blast can stabilize ignition and combustion of coal, while decreasing the excess oxygen ratio leads to increased combustible losses in the gasifier.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Energy & Fuels
Candice Ellison, Victor Abdelsayed, Mark Smith, Dushyant Shekhawat
Summary: The effects of gasifier conditions on the gasification characteristics of different types of coal were evaluated, showing higher syngas yields and selectivity under microwave heating compared to conventional heating. Carbon conversion efficiency and cold gas efficiency were found to be highest for coals gasified under microwave irradiation, indicating a dependence of gasification reactivity on coal type.
Article
Chemistry, Applied
Jun Feng, Sumin Gu, Rong Zhang, Xuan Qu, Jicheng Bi
Summary: The effect of steam in crude gas on Co-Ca bimetal catalyzed coal hydrogasification was investigated using H2 and steam mixtures. The presence of steam significantly inhibited Co-Ca activity toward hydrogasification. This study provides insights for developing an inexpensive and effective process for coal to clean fuels.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Chemistry, Applied
Ruiqi Mu, Ming Liu, Junjie Yan
Summary: Supercritical water gasification (SCWG) is a promising technique to convert coal into hydrogen-rich syngas. Advanced exergy analysis shows that SCWG has a higher exergy efficiency compared to conventional (CG) and chemical looping gasification (CLG). The gasifier in SCWG process has the highest irreversibility caused by gasification reaction, but also has a high potential for avoidable exergy destruction. Additionally, parameters such as coal water slurry concentration (CWSC), gasification temperature, gasification pressure, and oxygen-coal ratio have significant effects on the performance of SCWG.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Energy & Fuels
Marek Dudynski, Karol Dudynski, Jacek Kluska, Mateusz Ochnio, Pawel Kazimierski, Dariusz Kardas
Summary: The study presents the results of laboratory and industrial-scale tests of leather waste gasification, showing that gasification effectively converts leather waste into energy and produces safer, easier to handle ashes, and valuable syngas compared to incineration.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Thermodynamics
Muhammad Awais, Muhammad Mubashar Omar, Anjum Munir, Wei li, Muhammad Ajmal, Sajjad Hussain, Syed Amjad Ahmad, Amjad Ali
Summary: This study evaluated the effects of biomass ratios on gasification efficiency, reactor thermal profile, and specific yield of syngas composition and tar contents. The results suggested that the mixture of sugarcane bagasse + coconut shells was a suitable feedstock mixture for gasification.
Article
Thermodynamics
Nerijus Striugas, Kestutis Zakarauskas, Rolandas Paulauskas, Aurimas Lisauskas, Adolfas Jancauskas
Summary: Biomass is a main renewable energy source and biomass conversion technologies, such as plasma-assisted gasification, can be used for biomethane production. The performance of two catalysts, magnesium nickel and magnesium nickel hydride, were investigated and found to have good activity and functionality for converting carbon dioxide and carbon monoxide-containing syngas.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Review
Chemistry, Physical
Alexandra J. Frainetti, Naomi B. Klinghoffer
Summary: Biomass gasification to form syngas is a promising renewable energy production process. This review discusses the use of biochar as a catalyst to improve the generation of tars during the gasification process. It provides detailed information on the characteristics and catalytic function of biochar, and recommends further areas for research.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Thermodynamics
Pradeep Sahu, Prabu Vairakannu
Summary: Electronic wastes, especially printed circuit boards (PCBs), are thermally treated under N2 and CO2 conditions by pyrolysis and gasification processes. PCB pyrolysis at 500 degrees C yields 7.46% of tar with a calorific value of 31.28 MJ/kg. CO2 gasification of PCB mixture at 1000 degrees C achieves a conversion rate of 97.6%, resulting in high cold gas and exergy efficiencies. Co-gasification with high ash Indian coal increases the overall efficiency, and the residue can be used as a catalyst or additives in concrete material.
Article
Thermodynamics
Yukai Li, Shaozeng Sun, Dongdong Feng, Wenda Zhang, Yijun Zhao, Yukun Qin
Summary: Syngas tempering technology is a method to consume excess O2 in flue gas and increase the reactivity of reburning coal to reduce NO emissions. Experimental results showed that syngas tempering increased the specific surface area and pore volume of char, while decreasing the content of oxygen-containing groups and increasing the content of alkyl groups. CH4 exhibited a better tempering effect than H2, while the effect of CO was not significant. The study provides insights for improving the removal efficiency of existing pulverized coal reburning for NOx emissions reduction.
Article
Energy & Fuels
Lucas C. P. Silva, Mariana M. Wilfinger, Thiago B. Murari, Aloisio S. Nascimento Filho, Marcelo A. Moret, Alex A. B. Santos
Summary: The combustion process is a major source of energy for future decades. However, it negatively impacts the environment by emitting particulate matter. Therefore, researching more sustainable and efficient combustion processes is crucial. Biomass gasification has been studied as a way to reduce emissions by producing syngas.
Article
Chemistry, Physical
Zhiwei Hu, Anchao Qu, Zunrui Zhong, Xinwen Zhang, Hao Peng, Juan Li
Summary: A numerical model was established to study the gasification characteristics of pulverized coal using waste heat from high temperature slag particles. The effects of slag particle temperature, coal/gasification agent mass ratio, and water content in gasification agent on the gasification reaction efficiency were discussed. It was found that an appropriate ratio of parameters and suitable diameter and water content can optimize the gasification products.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Review
Green & Sustainable Science & Technology
Muhammad Zain Siddiqui, Mahshab Sheraz, Umair Ali Toor, Ali Anus, Abid Mahmood, Muhammad Haseeb, Muhammad Ibrahim, Kuan Shiong Khoo, Vishno Vardhan Devadas, Muhammad Mubashir, Sami Ullah, Pau Loke Show
Summary: Biomass gasification technology is widely used for the production of biofuels and syngas, with parameters such as biomass particle size, moisture content, gasifying agent, residence time, equivalence ratio, steam to biomass ratio, and gasification temperature having a significant impact on the process. Fluidized bed gasifiers and catalysts play important roles in the production of optimal syngas.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2022)
Article
Chemistry, Physical
Fan Yang, Qingbo Yu, Wenjun Duan, Zhenfei Qi, Qin Qin
Summary: Electrochemical catalytic gasification (ECG) is a new approach for achieving high efficiency coal gasification at low reaction temperatures. Compared to common coal gasification (CCG), ECG yields higher carbon conversion, CO production and combustible components, which increase with power. In the ECG process, thermal electrons play a significant role.
CATALYSIS COMMUNICATIONS
(2021)
Review
Chemistry, Physical
Ben Wang, Rajender Gupta, Lei Bei, Qianmin Wan, Lushi Sun
Summary: This review provides an overview of research progress related to syngas quality, tar formation, and minerals transformation. It also describes the current technology under construction and commercial applications, as well as the challenges and prospects for commercial operation. The study highlights the importance of temperature, gasification agents, and steam to MSW ratio in syngas production, and discusses the different forms of tar in various atmospheres. The review also emphasizes the need for efficient catalysts, proper management of heavy metals, and the reduction of investment and operational costs.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Correction
Chemistry, Applied
Jia Liu, Juntong Dong, Xiaodan Li, Teng Xu, Zhenguo Li, Jeffrey Dankwa Ampah, Mubasher Ikram, Shihai Zhang, Chao Jin, Zhenlong Geng, Tianyun Sun, Haifeng Liu
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Seba Alareeqi, Daniel Bahamon, Kyriaki Polychronopoulou, Lourdes F. Vega
Summary: This study explores the potential application of single-atom-alloy (SAA) catalysts in bio-oils hydrodeoxygenation refining using density functional theory (DFT) and microkinetic modeling. It establishes the relationships between stability, adsorptive properties, and activity structures for bio-oil derivatives, providing guidance for the synthesis of cost-effective SAA combinations.
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Bin Hu, Wen -Ming Zhang, Xue-Wen Guo, Ji Liu, Xiao Yang, Qiang Lu
Summary: This study explored the pyrolysis behaviors and mechanisms of different monosaccharides, including arabinose, galactose, galacturonic acid, and glucuronic acid. The roles of structural differences in these monosaccharides were analyzed, and it was found that glucuronic acid undergoes a special C-C bond breaking reaction during pyrolysis. The findings provide a deep understanding of the pyrolysis chemistry of hemicellulose and the role of different branches.
FUEL PROCESSING TECHNOLOGY
(2024)
Review
Chemistry, Applied
Youwei Zhi, Donghai Xu, Guanyu Jiang, Wanpeng Yang, Zhilin Chen, Peigao Duan, Jie Zhang
Summary: Hydrothermal carbonization (HTC) is an effective method for the harmless disposal of municipal sludge (MS) and offers potential applications for the obtained products. Optimizing reaction conditions, coupling with other waste materials, and combining different processes can improve the performance of HTC. Furthermore, HTC contributes to energy recovery and enhances the quality of life cycle assessment.
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Jia Wang, Jianchun Jiang, Dongxian Li, Xianzhi Meng, Arthur J. Ragauskas
Summary: This study presents a scalable process for converting holocellulose and cellulosic wastes into advanced oxygen-containing biofuels with high furan, cyclic ketone, and ethanol content. By combining hydropyrolysis and vapor-phase hydrodeoxygenation using Pd/Al2O3 as a catalyst, the researchers achieved high yields and conversions. The integrated process holds great promise for biomass waste conversion into advanced biofuels.
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Florian Held, Jannis Reusch, Steffen Salenbauch, Christian Hasse
Summary: The accurate prediction and assessment of soot emissions in internal combustion engines are crucial for the development of sustainable powertrains. This study presents a detailed quadrature-based method of moments (QMOM) soot model coupled with a state-of-the-art flow solver for the simulation of gasoline engines. The model accurately describes the entire cause-and-effect chain of soot formation, growth and oxidation. Experimental validation and engine cycle simulations are used to identify the root cause of observed soot formation hotspots.
FUEL PROCESSING TECHNOLOGY
(2024)