Results 11 to 20 of about 41,757 (268)

Comparative analysis of covalent bond cleavage and free radical behavior during the heating process in direct coal liquefaction of Naomaohu and Shangwan coals

Fuel Processing Technology
The cleavage of covalent bonds and the generation of radicals play a crucial role in product distribution during direct coal liquefaction (DCL). This paper systematically investigates the mechanisms of covalent bond cleavage and the behavior of free ...
Huina Xu, Xiaodong Zhou, Ning Zhen, Xuelong Yin, Ting Liu, Yakun Tang, Jingmei Liu, Lang Liu, Fengyun Ma   +8 more
doaj   +2 more sources

Evaluation of benzaldehyd and dioctyl phthalate modified direct coal liquefaction residue asphalt binder based on rheology and microscopic mechanisms

Cleaner Materials
This study intends to investigate the influence of benzaldehyde and dioctyl phthalate (DOP) on the rheological properties and microstructure of direct coal liquefaction residue (DCLR) modified asphalt binder.
Jie Ji, Tong Ma, Ziyuan Zhang, Meng Ling, Xinqiang Xu, Jianming Wei   +5 more
doaj   +2 more sources

CONVERTING COAL MINING INTO UNDERGROUND PRODUCTION OF ARTIFICIAL OIL [PDF]

Sustainable Extraction and Processing of Raw Materials Journal, 2022
. A method for direct liquefaction of coal is presented. After separating the coal from waste rock gravitationally in an aqueous salt solution, drying and grinding, the purified separated coal is mixed with a paste-forming reagent.
Alexander Brodt
doaj   +1 more source

Direct Liquefaction of South African Vitrinite- and Inertinite-Rich Coal Fines [PDF]

ACS Omega
Naldo J.A. Meyer, Christien A. Strydom, John R. Bunt, Romanus C. Uwaoma   +3 more
doaj   +2 more sources

Study on the Structure and Catalytic Performance of Catalyst Fe7S8 for Direct Coal Liquefaction

Taiyuan Ligong Daxue xuebao, 2021
In order to study the relationship between the direct coal liquefaction performance and the structure of Fe7S8 catalysts prepared by different methods, Fe7S8 catalysts with different crystal structures were prepared by calcination and solvothermal method
Xueming WANG, Xiaohong LI, Ruoqing WANG
doaj   +1 more source

Experiment and Algorithm Research of Coal Direct Liquefaction Residual Oil Pyrolysis and Coking Technology Based on Lumped Kinetic Engineering

Journal of Mathematics, 2022
With the development of computer operation technology and algorithms, the lumped dynamic model is more practical, and the development and application are more comprehensive.
Tian Bo, Chaohe Yang
doaj   +1 more source

Kinetic modelling of low temperature direct coal liquefaction: Consideration of dynamic catalyst activity

South African Journal of Chemical Engineering, 2021
A kinetic model for direct coal liquefaction at low temperature in the presence of a magnetite nano-catalyst was developed. The model took into account the iron oxide catalyst transformation into its active state as well as the process of reactive ...
Ethan Gabriel Hammond, Shaheen Amed Faizal Moonsamy, David Lokhat, Milan Carsky   +3 more
doaj   +1 more source

Carbon emissions from in-situ pyrolysis of tar-rich coal based on full life cycle analysis method

Meitan xuebao, 2023
The control of carbon emissions has already become a great social strategic problem in China which must be solved at present and in the future. It is imperative to carry out safe, efficient, and low-carbon utilizations in the coal industry under the ...
Xiangyu XUE, Chang’an WANG, Lei DENG, Xing NING, Defu CHE   +4 more
doaj   +1 more source

Process study and CO2 emission reduction analysis of coal liquefaction residue fluidized bed pyrolysis

Frontiers in Energy Research, 2022
The direct coal liquefaction process usually produces a liquefaction residue of about 30% of its coal feed. The effective utilization of the coal liquefaction residue (CLR), which contains about 80% organic matter, is of great significance for improving ...
Bo Tian, Bo Tian, Junhu Gao, Qiang Guo, Xiaoming Zhu, Hao Zhang, Wei Zhu, Xu Hao, Chaohe Yang, Yong Yang, Yong-Wang Li   +10 more
doaj   +1 more source

Advanced direct coal liquefaction concepts [PDF]

, 1992
During the first quarter of FY 1993, the Project proceeded close to the Project Plan. The analysis of the feed material has been completed as far as possible. Some unplanned distillation was needed to correct the boiling range of the Black Thunder solvent used during the autoclave tests.
Berger, D. J., Parker, R. J., Simpson, P. L.   +2 more
openaire   +1 more source