Results 11 to 20 of about 714 (185)

Enhancing Interfacial Dioxygen Bridging Dynamics of Waste-Derived Cathode Catalysts for Augmented High-Rate Performance in Li-O₂ Batteries. [PDF]

Adv Sci (Weinh)
This study fabricates Fine Slag/Ti4O7@TiC hybrids with interfacial dioxygen bridge coupling to optimize oxygen redox dynamics in lithium‐oxygen batteries (LOBs). Lattice distortion from oxygen vacancies and inherent charge repulsion of Ti‐O‐C interfacial coupling reconstruct and refine the surface coordination environment.
Zhang J, Ma S, Liu H, Huo B, Wang Y, Sun Z, Zeng K.   +6 more
europepmc   +2 more sources

Study on fracturing monitoring and expansion law of underground gasification coal based on different gasification channel types

Meitan xuebao, 2023
During the underground coal gasification process, the thermal stress produced at high temperatures will lead to coal cracking, which may cause gas leakage.
Faqiang SU, Qichao DENG, Junbo WU, Tao ZHANG, Mengjia DAI, Xiaolong HE, Junnan YANG, Yihe YU   +7 more
doaj   +1 more source

Studying the features of the implementation of underground coal gasification technology in terms of Lvivvuhillia SE [PDF]

E3S Web of Conferences, 2020
Topical issues of the possibilities for changes in the coal extraction technology in terms of Stepova mine of Lvivvuhillia SE have been highlighted. Analysis of the current state of mining operations has been carried out.
Saik Pavlo, Dychkovskyi Roman, Lozynskyi Vasyl, Falshtynskyi Volodymyr, Cabana Edgar, Hrytsenko Leonid   +5 more
doaj   +1 more source

Possibility to Reduce Dependence of Belarus on External Gas Energy Carrier

Наука и техника, 2004
The paper contains data on brown coal reserves in Belarus. Method of underground gasification of coal is described in the paper. The paper reveals advantages of underground gasification of coal in comparison with traditional methods (underground and open
B. A. Bogatov, V. S. Voitenko
doaj   +1 more source

Underground coal gasification - the Velenje Coal Mine energy and economic calculations [PDF]

Chemical Industry and Chemical Engineering Quarterly, 2017
Underground coal gasification (UCG) is a viable possibility for the exploitation of vast coal deposits that are unreachable by conventional mining and can meet the energy, economic and environmental demands of the 21st century.
Konovšek Damjan, Praunseis Zdravko, Avsec Jurij, Berčič Gorazd, Pohar Andrej, Zavšek Simon, Medved Milan   +6 more
doaj   +1 more source

Model-Free Control of UCG Based on Continual Optimization of Operating Variables: An Experimental Study

Energies, 2021
The underground coal gasification (UCG) represents an effective coal mining technology, where coal is transformed into syngas underground. Extracted syngas is cleaned and processed for energy production.
Ján Kačur, Marek Laciak, Milan Durdán, Patrik Flegner   +3 more
doaj   +1 more source

USE OF MAGNETIC FIELDS FOR INTENSIFICATION OF COAL GASIFICATION PROCESS

Rudarsko-geološko-naftni Zbornik, 2022
Underground coal gasification is an alternative method for mining coal from thin and ultra-thin seams, which enables conversion of solid fossil fuels into combustible gases at the site of coal occurrence.
Vasyl Lozynskyi, Volodymyr Falshtynskyi, Pavlo Saik, Roman Dychkovskyi, Bakhyt Zhautikov, Edgar Cabana   +5 more
doaj   +1 more source

Determination of the Technological Parameters of Borehole Underground Coal Gasification for Thin Coal Seams

Journal of Sustainable Mining, 2013
In this article the characteristics of the criteria of borehole underground coal gasification for thin coal seams are defined. The thermal and material balance calculations for coal seam gasification processes are also explained. The construction, method
Volodymyr S. Falshtynskyi, Roman O. Dychkovskyi, Vasyl G. Lozynskyi, Pavlo B. Saik   +3 more
doaj   +1 more source

Underground Gasification of Coal

Journal of the Fuel Society of Japan, 1965
Coal assumes an important role as energy souces along with hydraulic power in our country. In order to supply energy at low cost each coal mining company has tried to carry out the rationalization of industry in many respects.Hereafter it is necessary for us not only to promote the mechanized extraction of coal, but also to study positively the new ...
Nakamura, Hazime, Jrie, Shin
openaire   +2 more sources

CFD Simulation of Temperature Variation in Carboniferous Rock Strata During UCG

Journal of Sustainable Mining, 2013
The numerical simulation was based on the computational fluid dynamics formalism in order to identify the change of temperature in rock strata during underground coal gasification (UCG).
Tomasz Janoszek, Anna Sygała, Mirosława Bukowska   +2 more
doaj   +1 more source