Results 61 to 70 of about 20,671 (253)

Experimental Study on the Mechanical Damage and Permeability Evolution of Coal With Different Moisture Contents Under Supercritical Carbon Dioxide Conditions

Energy Science & Engineering
Using a self‐developed supercritical carbon dioxide (CO2) soaking system, the damage mechanisms and cracking characteristics of coal due to supercritical CO2 under the coupling of high‐temperature, high‐pressure, water, and the seepage evolution law and ...
Xiaoqiang Zhang, Kai Wang, Yulong Jiang, Yuedong Liu, Pengqi Qiu, Shiyu Zhang, Tingting Cai, Jian Hou   +7 more
doaj   +1 more source

Hydrochar Production by Hydrothermal Carbonization: Microwave versus Supercritical Water Treatment

Biomass
Hydrochar, a carbonaceous material produced through hydrothermal carbonization of lignocellulosic biomass, has gained significant attention due to its versatile applications in agriculture, energy, and environmental protection.
Modupe Elizabeth Ojewumi, Gang Chen
doaj   +1 more source

Numerical simulation of supercritical-fluid flows over arbitrary geometry

Journal of Fluid Science and Technology, 2014
In this study, numerical simulations of supercritical-water flows over an arbitrary geometry are presented. In the present method, the supercritical-fluids simulator (SFS) developed by the authors is coupled with the building-cube method (BCM).
Shibo QI, Takashi FURUSAWA, Satoru YAMAMOTO   +2 more
doaj   +1 more source

Sustainable Palm Oil Extraction and Trends in the Use of Green Technologies: State‐of‐the‐Art and Future Directions

Journal of the American Oil Chemists' Society, EarlyView.
ABSTRACT Palm oil, which is extracted from the mesocarp of the fruit of the Elaeis guineensis Jacq. palm tree, is the most widely produced vegetable oil in the world. The extraction of this substance typically utilizes the conventional pressing method, a technique that is advantageous due to its low operating cost and simplified process.
Constantino Lucas Queta, Alessandra Lopes de Oliveira, Aline Silva Mello Cesar   +2 more
wiley   +1 more source

Degradation Mechanisms, Encapsulation‐Based Stabilization, and Analytical Detection of Vitamin A

Journal of the American Oil Chemists' Society, EarlyView.
ABSTRACT Vitamin A is an important lipid‐soluble micronutrient essential for vision, immune function, and overall growth and development. However, vitamin A is unstable and susceptible to environmental factors because of its conjugated structure and inherent chemical reactivity.
Latheesha Abeywardana, Thambaramala V. Gamage, Tanoj K. Singh, Shuaifei Zhao, Amy Logan, Lingxue Kong   +5 more
wiley   +1 more source

Advancements in CO2 Capture Technologies: A Review of Amine Absorption and Alternative Methods for Post‐Combustion Integration

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Carbon capture technologies are poised to become one of the primary focuses regarding the achievement of net‐zero emissions by the year 2050. In these technologies, particular attention is given to post‐combustion CO2 capture, which is more easily implemented at existing power stations and other industries.
Satyajit Mukherjee, Ashish Kumar, Mayurkumar P. Patil, Rohit B. Meshram   +3 more
wiley   +1 more source

Research on Heat Transfer Enhancement of Spiral Grooved Tube Heat Exchangers Based on CFD and Artificial Intelligence

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Driven by the energy crisis and carbon neutrality goals, high‐efficiency heat exchange equipment has become a core demand in the industrial sector. The spiral grooved double‐pipe heat exchanger exhibits significant heat transfer enhancement advantages, yet it requires balancing heat transfer efficiency and pressure loss.
Yueyun Yang, Wei Li, Xiuzhi Xi, Neng Gao
wiley   +1 more source

Dynamic water hammer experiment on supercritical/dense-phase CO2 transportation pipelines

You-qi chuyun
ObjectiveSupercritical/dense-phase CO2 exhibits relatively high density. During pipeline transport, planned or accidental valve closures can induce transient water hammer.
Haonan QIAN, Qihui HU, Xuefeng ZHAO, Yuxing LI, Lan MENG, Luyao ZHANG, Lijun ZHANG, Hang ZHANG   +7 more
doaj   +1 more source

Effects of dissolved oxygen and temperature on the stress corrosion of 06Cr17Ni12Mo2Ti stainless steel in supercritical water

工程科学学报, 2015
The effects of dissolved oxygen(DO) and temperature on the stress corrosion cracking(SCC) of 06Cr17Ni12Mo2 Ti stainless steel(SS) in supercritical water environments were investigated by slow strain rate tensile tests(SSRT).
LU Hui, SHEN Chao, ZHANG Le-fu, TANG Rui, ZHANG Qiang   +4 more
doaj   +1 more source

Linear Viscoelastic Behavior of n‐Alkane Diluted Polyethylene Melts: Sorption, Desorption, and Oscillatory Rheometry

Journal of Applied Polymer Science, EarlyView.
This study systematically maps polyolefin dilution dynamics using a homologous series of n‐alkanes. Integrating gravimetric sorption, subsequent controlled desorption, and oscillatory rheometry establishes a precise framework to analyze reduction in viscosity at least for polymer diluent mixtures with polymer concentration > 35% and diluent ...
Ernst Georg Viehböck, Georg Gschwendner, Dario Pindrić, Gunnar Spiegel, Alexander Hammer, Christian Paulik, Gerald Berger‐Weber   +6 more
wiley   +1 more source