Results 11 to 20 of about 717 (182)

Enhancing Interfacial Dioxygen Bridging Dynamics of Waste-Derived Cathode Catalysts for Augmented High-Rate Performance in Li-O<sub>2</sub> Batteries. [PDF]

open access: yesAdv 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   +6 more
europepmc   +2 more sources

Regression Models Utilization to the Underground Temperature Determination at Coal Energy Conversion

open access: yesEnergies, 2021
The underground coal gasification represents a technology capable of obtaining synthetic coal gas from hard-reached coal deposits and coal beds with tectonic faults. This technology is also less expensive than conventional coal mining.
Milan Durdán   +4 more
doaj   +1 more source

A Thermal-Hydrological-Mechanical-Chemical Coupled Mathematical Model for Underground Coal Gasification with Random Fractures

open access: yesMathematics, 2022
In this paper, in order to understand the development process and influencing factors of coal underground gasification, taking the two-dimensional underground gasification area of the plane as the simulation object, the characteristics of the multi ...
Zhizhen Zhang   +3 more
doaj   +1 more source

Preparation and Properties of High Water Filling Material for Coal Gasification Slag

open access: yesMeikuang Anquan, 2020
In order to solve the collapse problem of underground coal gasification and reduce the dissolution of heavy metal cadmium from underground coal gasification slag, the high water filling material of coal gasification slag was prepared by the solution ...
XU Yang, XU Zaigang, XIE Hongfei, LI Cuiqin, CAO Yang, CHEN Qianlin
doaj   +1 more source

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

open access: yesMeitan 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   +7 more
doaj   +1 more source

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

open access: yesE3S 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   +5 more
doaj   +1 more source

Possibility to Reduce Dependence of Belarus on External Gas Energy Carrier

open access: yesНаука 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]

open access: yesChemical 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   +6 more
doaj   +1 more source

USE OF MAGNETIC FIELDS FOR INTENSIFICATION OF COAL GASIFICATION PROCESS

open access: yesRudarsko-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   +5 more
doaj   +1 more source

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

open access: yesEnergies, 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   +3 more
doaj   +1 more source

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