Article
Green & Sustainable Science & Technology
Morteza Hosseinpour, M. Soltani, Jatin Nathwani
Summary: Energy is crucial for economic growth in all economies, especially emerging ones that are still dependent on fossil fuels such as heavy oil. However, the presence of heteroatoms in heavy oil leads to environmental pollution during combustion, thus requiring upgrading and fractionation within strict specifications. Hot compressed water (HCW) is emerging as a promising and environmentally friendly method to upgrade heavy oil, replacing traditional toxic solvents. The combination of HCW with renewable energy sources offers a cleaner carbon energy system with reduced energy consumption and lower carbon dioxide emission.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Energy & Fuels
Seyed Mohammad Zolfaghari, M. Soltani, Morteza Hosseinpour, Jatin Nathwani
Summary: This study investigates the combined cycle of geothermal energy and heavy oil upgrading in hot compressed water (HCW) for electricity generation, offering efficient desulfurization and reduced carbon dioxide emissions. The superstructure's performance is analyzed through energy, exergy, economic, exergoeconomic analysis, and environmental assessments, resulting in improved cycle exergy efficiency and total system cost rate. Multi-objective optimization using artificial neural network coupled with genetic algorithm yields optimal values for cycle exergy efficiency and total system cost rate. The integration of geothermal energy reduces global carbon dioxide emissions and environmental costs. A case study demonstrates mitigation of local sulfur dioxide emissions caused by heavy oil consumption.
Article
Energy & Fuels
Rim Tilouche, Raoudha Garma, Housam Binous, Ahmed Bellagi
Summary: This paper reports on a thermodynamic analysis of Tunisian olive pomace steam gasification in order to produce hydrogen-rich syngas. The results show that the S/B ratio is a key parameter for the quality of the producer syngas, and a compromise needs to be found to achieve the desired syngas quality.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Chemistry, Physical
Thanh Son Phan, Doan Pham Minh, Fabienne Espitalier, Ange Nzihou, Didier Grouset
Summary: This work examined different processes of hydrogen production from biogas and concluded that the H-2-TRM0.3C process, which utilizes the TRM technique with partial tail gas recycling, is the best option due to its high hydrogen production rate and energy yield. Furthermore, this process was found to be more efficient than the actual industrial process.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Pawel Ziolkowski, Pawel Madejski, Milad Amiri, Tomasz Ku, Kamil Stasiak, Navaneethan Subramanian, Halina Pawlak-Kruczek, Janusz Badur, Lukasz Niedzwiecki, Dariusz Mikielewicz
Summary: The article discusses the thermodynamic analysis of a negative CO2 emission power plant using zero-dimensional mathematical models, showing the potential for achieving negative emissions through a novel gas cycle using gasified sewage sludge. Results from different thermodynamic codes offer consistent trends even in the absence of experimental data. The study highlights the importance of precise modeling for carbon capture and storage systems and demonstrates the positive environmental impact of the proposed solution.
Article
Thermodynamics
Biao Zhou, Wanyu Yang, Hideki Yoshioka, Tao Chen, Kai Wang, Danping Hao, Chenyang Jiang, Kai Cui
Summary: This study investigates the effectiveness of compressed air foams (CAFs) agents in extinguishing fires in ultra-high voltage (UHV) converter transformers. Three typical CAFs agents are tested and found capable of extinguishing a 1 m2 transformer hot oil fire without causing boiling over phenomenon. 1% MJBP CAFs is the fastest with a fire extinguishing time of 168 s and is even more efficient with a gas to liquid ratio of 9:1. CAFs have the advantage of uniformity and stability, making it suitable for extinguishing hot oil fires in extra high voltage transformers without causing further combustion.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Agricultural Engineering
J. V. Tirkey, Deepak Kumar Singh
Summary: This study investigates the processing of waste poultry litter pellet biomass for the generation of enriched hydrogen syngas using biomass gasifier. Model validation and sensitivity analysis were performed, and multi-objectives optimization of gasification parameters was carried out using RSM. The results show good agreement and optimized values of key parameters.
BIOMASS & BIOENERGY
(2022)
Article
Engineering, Chemical
Ying-Jie Xu, Yun-Fei Sun, Jing-Yi Yang, Zi-Bin Huang, Pei-Qing Yuan
Summary: In this study, the dealkylation-based visbreaking of heavy oil in a hot compressed water environment was investigated. It was found that the solubilization of water reduces the viscosity of heavy oil, leading to an increase in the reaction rate of dealkylation. The hydration reaction with solubilized water suppresses condensation and extends the reaction time window for dealkylation, resulting in higher yields and lower viscosity of the products.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Energy & Fuels
Zhaofei Li, Yimeng Li, Hao Xu, Jack Jarvis, Shijun Meng, Hua Song
Summary: The research demonstrated the superior performance of heavy crude partial upgrading under CH4 atmosphere compared to N-2, indicating methane's role in effective suppression of thermal cracking and promoting heavy ends conversion. Furthermore, the study revealed differences in oil product properties derived from different atmospheres, showing changes with increasing asphaltene conversion.
Article
Energy & Fuels
Maria Pilar Gonzalez-Vazquez, Fernando Rubiera, Covadonga Pevida, Daniel T. Pio, Luis A. C. Tarelho
Summary: This study assessed two thermodynamic equilibrium models for gasification process, indicating that the stoichiometric model provides more accurate predictions of gas composition and gasification efficiency.
Article
Thermodynamics
Abdul Salam Abd, Ahmad Abushaikha, Yusuf Bicer
Summary: In this study, an integrated energy system for solar enhanced oil recovery process is presented. The system utilizes solar energy to produce steam for electricity generation, fresh water, and elemental sulfur production. The system offers a potential solution for utilizing solar energy in the oil industry, especially in high solar irradiance regions with mature heavy oil reservoirs. The energy and exergy efficiencies of the system are analyzed and different operating system parameters are evaluated.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Green & Sustainable Science & Technology
Nancy Zgheib, Hosni Takache
Summary: This study investigated the recycling of used lubricating oil through solvent extraction with a ternary solvent, followed by vacuum distillation. By evaluating various parameters on a laboratory scale, the optimal solvent combination, solvent-to-oil ratio and temperature were determined. Results showed a ternary system of 50% 1-butanol/25% isopropanol/25% MEK was most effective for reducing contaminants in ULO. Additionally, economic analysis indicated the process was highly profitable with a return on investment of 55% and a payback period of 1.9 years.
CLEAN TECHNOLOGIES AND ENVIRONMENTAL POLICY
(2021)
Article
Engineering, Industrial
C. Sotelo, A. Favela-Contreras, R. A. Ramirez-Mendoza, F. Beltran-Carbajal, E. Cruz, D. Sotelo
Summary: The article introduces a rigorous dynamic simulation-based procedure of a complete real dehydration and desalting process using Aspen HYSYS. Different equipment is carefully designed based on literature review, and a specially tailored procedure is proposed to estimate water and salt contents, with the accuracy of the simulation validated by comparing main flows and chemical contents with actual data.
INTERNATIONAL JOURNAL OF SIMULATION MODELLING
(2021)
Article
Engineering, Multidisciplinary
Essam A. Salem, M. Farid Khalil, Asmaa S. Sanhoury
Summary: This study discusses the effects of insulation thickness on the overall costs and environmental emissions of underground oil pipelines, and determines the optimal insulation thickness range, annual energy saving cost variations, and emission reduction rates. It highlights the sensitivity of insulation lifetime and unit cost to insulation thickness, as well as the impact of discount rate and insulation material cost on the optimal thickness.
ALEXANDRIA ENGINEERING JOURNAL
(2021)
Article
Chemistry, Applied
Mohd Sharizan Md Sarip, Noor Azian Morad, Mustafa Kamal Tun Abd Aziz, Norliza Saparin, Mohd Al Hafiz Mohd Nawi
Summary: This study utilized hot compressed water extraction (HCWE) for the extraction of crude palm oil (CPO). The quality of the extracted CPO was analyzed to evaluate possible product degradation. The results showed that the CPO extracted using HCWE had low FFA and low DAG, indicating higher quality. The fatty acid composition of the extracted CPO was similar to commercial CPO, suggesting no undesired reaction occurred during the extraction process. HCWE has the potential to replace screw press systems, but further economic analysis is needed to evaluate its prospects.
JOURNAL OF OLEO SCIENCE
(2023)
