Article
Energy & Fuels
Andre Kiyoshi Coutinho Sato, Regina Francielle Silva Paulino, Victor Arruda Ferraz de Campos, Celso Eduardo Tuna, Jose Luz Silveira
Summary: This paper studies the application of petcoke gasification as a fuel for electricity generation in Brazilian oil refineries. Through thermodynamic studies and economic analysis, data on the efficiency, cost, and payback period of electricity production are obtained.
Article
Chemistry, Multidisciplinary
Hyung-Tae Kim, Ji-Hwan Lee, Jin-Wook Lee, Byoung-Hwa Lee, Chung-Hwan Jeon
Summary: This study simulated the gasification process of pet-coke slurry in a 2TPD gasifier, investigating the effects of operational parameters on fluid dynamics, temperature distribution, particle trajectories, carbon conversion, and gas composition. The results showed that higher oxygen/slurry ratios increased CO2 concentrations and decreased H-2 fractions, while raising the moisture content decreased CO levels and enhanced H-2 and CO2 production.
Article
Engineering, Environmental
Ming Liu, Fanghua Li, Haifeng Liu, Chi-Hwa Wang
Summary: The catalytic effect of chicken manure ash on gasification reaction was found to be strong, enhancing CO production, promoting pore development, while excess ash can block reaction surface, and the high content of calcium and potassium contributed dramatically to the catalytic effect.
CHEMICAL ENGINEERING JOURNAL
(2021)
Review
Energy & Fuels
Ben Wang, Wei Li, Chuan Ma, Wu Yang, Deepak Pudasainee, Rajender Gupta, Lushi Sun
Summary: This paper summarizes the synergistic effects of co-gasification of petroleum coke (PC) with various carbon-based feedstocks on gasification reactivity, syngas production, and mineral transformation. The key parameters and approaches affecting the synergy are discussed, and the two main synergy mechanisms are explored. Suggestions for improving syngas quality and dealing with emerging feedstocks are provided.
JOURNAL OF THE ENERGY INSTITUTE
(2022)
Article
Thermodynamics
Weiwei Xuan, Yongquan Zhang, Jiansheng Zhang
Summary: Slag behavior is critical for stable operation in the industrial gasification system. The study found that deposits in the syngas cooler are more sensitive to slag composition, with abundant Fe, Na, and K elements. Additionally, crystallization of the slag can last even at low temperatures, leading to sticky particles due to low liquid viscosity and increasing deposition tendency.
Article
Environmental Sciences
Neng Fang, Lingyan Zeng, Zhengqi Li, Yue Lu, Zhichao Chen
Summary: This study examined the newly developed entrained-flow gasification technology for gasifying raw syngas, with simulation and experimental verification showing promising results. Different zones in the gasifier exhibit distinct characteristics in combustion and gasification reactions, and adjusting the burner inclination angle can improve the efficiency of the gasifier operation.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Energy & Fuels
Linmin Zhang, Jiaofei Wang, Juntao Wei, Yonghui Bai, Xudong Song, Guangyu Xu, Yong Pan, Guangsuo Yu
Summary: The study found that as the CaO/MgO mass ratio increased, the ash fusion temperatures first decreased, then slightly increased at a ratio of 8:2, reaching the minimum. At low CaO/MgO ratios, the formation of spinel with stable lattice was the main reason for high AFTs, while at higher ratios, the formation of low-melting-point feldspar minerals led to AFT reduction. When the ratio reached 8:2, the relatively high amorphous content resulted in the lowest AFTs.
Article
Engineering, Environmental
Jianjun Cai, Ronghua Zeng, Wenheng Zheng, Shubin Wang, Jie Han, Kaiqiang Li, Ming Luo, Xingying Tang
Summary: The co-gasification of RDF and biomass is an efficient technology for MSW utilization, with higher temperature and ER values promoting syngas yield. Co-gasification demonstrated synergistic enhancements in carbon conversion efficiency, gas yield, and cold gas efficiency. Positive synergy effects were observed at lower ER and higher temperatures, while negative synergy effects tended to appear at higher ER values.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2021)
Article
Energy & Fuels
Furkan Kartal, Ugur Ozveren
Summary: This study developed a new integrated gasification combined cycle (IGCC) model for an entrained bed gasifier/GT/Kalina cycle using Aspen HYSYS, and conducted energy and exergy analysis to assess the sustainability of the system from various perspectives. The study focused on the CO2 co-gasification process of biochar/waste tyre blend, considering the effects of different gasification process operating conditions on the performance of the combined cycle. The study found that optimizing the operating conditions of the gasifier is critical to the performance of the integrated system.
Article
Energy & Fuels
M. Shahabuddin, Sankar Bhattacharya
Summary: The study investigated the gasification behavior of bituminous coal using different reactants at varying temperatures, finding that steam gasification achieved higher carbon conversion rates and lower heating values compared to CO2 gasification. Additionally, a mixture of CO2 and steam resulted in increased yields of H-2, CO and CH4 compared to pure CO2 gasification.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Review
Energy & Fuels
Miao Wang, Yiling Wan, Qinghua Guo, Yonghui Bai, Guangsuo Yu, Yurong Liu, Hong Zhang, Shu Zhang, Juntao Wei
Summary: Petroleum coke and biomass/coal co-gasification is a promising approach for efficiently integrating the individual advantages of different gasification feedstocks with syngas production. Research on syngas production, reactivity characteristics, and synergy behavior of co-gasification is critical. H-2-rich syngas and higher co-gasification reactivity can be acquired under specific conditions, such as high H/C ratio, coal/biomass proportion, gasification temperature, and gasification agent concentration. Synergy behavior in co-gasification shows relationships with free radical migration and AAEMs transfer.
Article
Environmental Sciences
Yan Cao, Yu Bai, Jiang Du
Summary: Biomass was studied as a potential renewable energy source, and a model was developed to predict gasification characteristics and performances. The study found that gasification temperature significantly influenced gas composition and product yields, while equivalence ratio and steam/biomass ratio affected gasification characteristics.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Energy & Fuels
M. Shahabuddin, Sankar Bhattacharya
Summary: Co-gasification of renewable biomass and coal is a promising technique to increase gasification performance, reduce emissions, and partially replace coal with biomass, making the technology more sustainable.
JOURNAL OF THE ENERGY INSTITUTE
(2021)
Article
Energy & Fuels
M. Shahabuddin, M. A. Kibria, Sankar Bhattacharya
Summary: This study evaluated the pyrolysis and gasification performance of Bangladeshi Barapukurian bituminous coal using an entrained flow gasifier. The results indicate that the heating value and pollutant emissions of syngas need to be adjusted properly at temperatures above 1200 degrees Celsius when using different particle sizes of coal under various CO2 concentrations.
JOURNAL OF THE ENERGY INSTITUTE
(2021)
Article
Thermodynamics
Marek Balas, Pavel Milcak, Patrik Elbl, Martin Lisy, Jakub Lachman, Petr Kracik
Summary: Biogas production through anaerobic digestion is widely used in the Czech Republic. Handling the solid residue, digestate, has become increasingly important. This study confirms the feasibility of utilizing digestate as a fuel for industrial-scale fluidised-bed gasification.
Review
Agricultural Engineering
Ayyadurai Saravanakumar, Pradeshwaran Vijayakumar, Anh Tuan Hoang, Eilhann E. Kwon, Wei-Hsin Chen
Summary: This paper investigates the thermochemical conversion behavior of large-size woody biomass and explores its potential application in an industrial setting. The study contributes to reducing energy consumption in the preprocessing of wood chips and briquettes, as well as reducing CO2 emissions.
BIORESOURCE TECHNOLOGY
(2023)
Review
Agricultural Engineering
Alvin B. Culaba, Andres Philip Mayol, Argel A. Bandala, Ronnie S. Concepcion Ii, Melchizedek Alipio, Wei-Hsin Chen, Pau Loke Show, Jo-Shu Chang, Jayne Lois G. San Juan, Aristotle T. Ubando
Summary: The increase in worldwide demand for energy is driven by population growth and economic development, leading to depletion of fossil fuel supplies and high greenhouse gas levels. Biorefineries, as a popular and carbon-neutral alternative, play a key role in the circular economy model. This paper critically reviews the challenges and future direction of biorefineries as an alternative carbon-neutral energy source.
BIORESOURCE TECHNOLOGY
(2023)
Article
Agricultural Engineering
Jihyeon Seo, Hyunjin Kim, Sugyeong Jeon, Soheil Valizadeh, Yasin Khani, Byong-Hun Jeon, Gwang Hoon Rhee, Wei-Hsin Chen, Shiung Lam, Moonis Ali Khan, Young-Kwon Park
Summary: Air gasification of Wood-Plastic Composite (WPC) using Ni-loaded HZSM-5 catalysts resulted in H2-rich gas. The catalytic activity was adversely affected by increasing the SiO2/Al2O3 ratio (SAR) of HZSM-5. The highest gas yield and H2 selectivity were obtained using 20%Ni/HZSM-5(30). Reducing SAR led to an increase in acyclic compounds in oil products.
BIORESOURCE TECHNOLOGY
(2023)
Article
Engineering, Environmental
Taewoo Lee, Jung-Hun Kim, Yiu Fai Tsang, Wei-Hsin Chen, Doyeon Lee, Min-Woong Jung, Sungyup Jung, Eilhann E. Kwon
Summary: Construction waste is a significant environmental problem due to its landfilling/incineration treatment, which increases the risk of releasing microplastics, leachates, air pollutants, and toxic gases. However, there is still a lack of sustainable disposal methods for building plastic waste. This study proposes a cleaner and safer disposal platform for building insulator waste (BIW) by using CO2 as a detoxifying agent. Through catalytic pyrolysis, toxic chemicals in BIW can be transformed into syngas (H2/CO), and CO2 facilitates the conversion of toxic compounds into CO, reducing their hazardous effects. This research confirms the technical feasibility of catalytic pyrolysis under CO2 as a promising disposal method for BIW.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Seong-Heon Cho, Youkwan Kim, Sangyoon Lee, Kun-Yi Andrew Lin, Wei-Hsin Chen, Sungyup Jung, Doyeon Lee, Deok Hyun Moon, Young Jae Jeon, Eilhann E. Kwon
Summary: This study proposes a thermochemical platform for converting polylactic acid waste into energy resources using carbon dioxide-assisted pyrolysis. The pyrolysis process converts impurities and additives in polylactic acid into pyrogenic gases and biocrudes. The concentration of carbon monoxide produced from pyrolysis under carbon dioxide condition is higher than under nitrogen condition, and further increases with the application of silica supported nickel catalysts.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Energy & Fuels
Carlo L. Vinoya, Aristotle T. Ubando, Alvin B. Culaba, Wei-Hsin Chen
Summary: The decarbonization of the energy industry is crucial for reducing greenhouse gas emissions. Small modular reactors (SMRs) are a promising technology for clean energy generation, comparable to other renewable energy sources. However, there are challenges in adopting and investing in SMRs in developing nations. A comprehensive review of SMRs is proposed to address technological, economic, environmental, and socio-political issues, while identifying areas for improvement.
Article
Energy & Fuels
Zhendi Ma, Siyu Qin, Yuping Zhang, Wei-Hsin Chen, Guosheng Jia, Chonghua Cheng, Liwen Jin
Summary: This paper proposes a three-dimensional model for deep-buried ground heat exchangers and investigates the effects of different boundary conditions on their thermal performance. The results show that the configuration of boundary conditions is closely related to the system's operating time and has a significant impact on the performance prediction.
Review
Agricultural Engineering
Sheng-Lun Lin, Hongjie Zhang, Wei-Hsin Chen, Mengjie Song, Eilhann E. Kwon
Summary: Biochar, derived from waste biomass, is a promising material for wastewater treatment. Torrefaction technology provides a low-temperature method for biochar production, and torrefied biochar can serve as both a solid biofuel and a pollutant adsorbent. This review compares torrefaction technology with other thermochemical processes and discusses recent advancements in torrefaction techniques. It also comprehensively explores the applications of torrefied biochar in wastewater treatment, such as dyes, oil spills, heavy metals, and emerging pollutants. In addition, the review introduces the treatment, reuse, and safe disposal of used biochar, offering valuable insights for developing sustainable environmental remediation strategies.
BIORESOURCE TECHNOLOGY
(2023)
Article
Agricultural Engineering
Anh Tuan Hoang, Xuan Phuong Nguyen, Xuan Quang Duong, Umit Agbulut, Christophe Len, Phuoc Quy Phong Nguyen, Mohamed Kchaou, Wei-Hsin Chen
Summary: The biorefining process of lignocellulosic biomass is profitable for biofuel production, but pretreatment is necessary to improve efficiency. Among pretreatment methods, steam explosion is an eco-friendly and effective approach. This review critically presents the mechanism and characteristics of steam explosion for lignocellulosic biomass pretreatment and discusses the impacts on pretreatment efficiency and biofuel production.
BIORESOURCE TECHNOLOGY
(2023)
Article
Agricultural Engineering
Ruizhen Li, Congyu Zhang, Wei-Hsin Chen, Eilhann E. Kwon, Saravanan Rajendran, Ying Zhang
Summary: Biochar is important for reducing biowaste and remediating the environment. Modifying biochar for better performance is a concern. P-doped biochar from soybean straw can be used to remove water pollutants and as an alternative to fossil fuel.
BIORESOURCE TECHNOLOGY
(2023)
Review
Engineering, Environmental
Wei-Hsin Chen, Partha Pratim Biswas, Eilhann E. Kwon, Young-Kwon Park, Saravanan Rajendran, Lalitha Gnanasekaran, Jo-Shu Chang
Summary: Catalytic pyrolysis of plastics to produce oil is a promising and cost-effective solution with renewable and sustainable characteristics. This research compares the efficiency of statistical optimization techniques for catalytic plastic pyrolysis reactions and identifies key factors influencing oil production, such as the catalyst-to-plastic ratio and types of acidic catalysts. The results show that the optimal values of pyrolysis parameters, including reaction temperature and residence time, significantly impact the oil yield.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Yasin Khani, Soheil Valizadeh, Hyunji Yim, Wei-Hsin Chen, Chang Hyun Ko, See Hoon Lee, Sang-Chul Jung, Young-Kwon Park
Summary: In this study, catalytic air gasification of plastic waste-derived wax was conducted using Ni/X-Al2O3 catalysts for the first time. The use of Ni/X-Al2O3 catalysts resulted in higher activity and selectivity compared to the use of 10Ni/Al catalyst. Particularly, the addition of Ti effectively reduced coke yield and enhanced catalytic activity and selectivity for H2 production. Increasing the temperature and adjusting the catalyst-to-feedstock ratio also affected gas yield and H2 selectivity.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Wei-Hsin Chen, Partha Pratim Biswas, Aristotle T. Ubandoe, Eilhann E. Kwon, Kun-Yi Andrew Lin, Hwai Chyuan Ong
Summary: This research used artificial neural networks (ANNs) to optimize operating parameters for the catalytic thermochemical conversion of methanol and ethanol, and investigated their impact on hydrogen production. The study found that peak methanol conversion (99%) occurred at a lower temperature of 300 degrees C, while peak ethanol conversion (85%) occurred at 500 degrees C. The ANN technique is cost-effective, quick, and precise, and has vast potential for hydrogen energy production and industrial applications.
Article
Thermodynamics
Congyu Zhang, Yong Zhan, Wei-Hsin Chen, Shih-Hsin Ho, Young-Kwon Park, Alvin B. Culaba, Ying Zhang
Summary: This study evaluates the relationship between torrefaction parameters and fuel properties using various indicators. It finds that some indicators can accurately reflect the changes in different fuel properties. Additionally, the variations of torrefaction severity index and contact angle are correlated to the changes in the fuel property of the torrefied biochar.
Article
Environmental Sciences
Larissa Richa, Baptiste Colin, Anelie Petrissans, Jasmine Wolfgram, Ciera Wallace, Rafael L. Quirino, Wei-Hsin Chen, Mathieu Petrissans
Summary: This study evaluates the possibility of using catalytic torrefaction as a pretreatment to improve wood pyrolysis and combustion for greener biochar production. The findings show that catalytic torrefaction can significantly decrease the devolatilization peak during combustion, making the wood's combustion similar to that of coal.
ENVIRONMENTAL POLLUTION
(2024)