The Usage of UCG Technology as Alternative to Reach Low-Carbon Energy

Abstract

Countries of the European Union have stated transition to carbon-neutral economy until the year of 2050. Countries with a higher share of coal-fired power generation currently have no solution to end their combustion and use clean, emission-free energy immediately. The solution to this problem in the energy industry appears to be the increased use of natural gas, which significantly reduces CO2 emissions. In this article, we investigated the possibility of using coal in situ, using UCG (underground coal gasification) technology. We focused on verified geological, hydrogeological, and tectonic information about the selected brown coal deposit in Slovakia. This information has been assessed in research projects in recent years at the Technical University. From the abovementioned information, possible adverse factors were evaluated. These factors affect the rock environment around the underground generator by UCG activity. As part of the process management, measures were proposed to eliminate the occurrence of pollution and adverse effects on the environment. In the final phase of the UCG technology, we proposed to carry out, in the boreholes and in the generator cavity, water flushing and subsequent grouting. The proposed are suitable materials for solidification and stabilization. Results of this article´s solutions are crucial in the case of usage of this so-called clean technology, not only in Slovakia but also worldwide.

Repowering Industrial Combined Heat and Power Units: a Contribution to Cleaner Energy Production

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Evaluation of the Hydropower Potential of the Torysa River and Its Energy Use in the Process of Reducing Energy Poverty of Local Communities

“…From the point of view of solving the problem of energy poverty in the long term, a frequent and relatively successful solution is to change the energy base, where fossil fuels are abandoned, and RES are used [21,22]. In this case, there are frequent installations of heat pumps, which are complemented by a micro photovoltaic system that improves the parameters of electricity consumption.…”

Comparison of Tar Samples from Reaction Zone and Outlet in Ex-Situ Underground Coal Gasification Experiment

“…Underground coal gasification (UCG) is a technology which transforms the in-situ coal seam into combustible gas with high calorific value without coal mining activities [1][2][3]. Underground coal gasification is regarded as an effective method for the development and utilization of deep coal resources, with the characteristics of clean utilization, technical feasibility, and economic efficiency [4,5].…”