DBPapers
DOI: 10.5593/sgem2011/s18.118

UNDERGROUND COAL GASIFICATION IN LABORATORY CONDITIONS

AUTHOR/S: M. LACIAK, J. KACUR, M. DURDAN, E. SKVAREKOVA, G. WITTENBERGER
Monday 1 August 2011 by Libadmin2011

11th International Multidisciplinary Scientific GeoConference SGEM2011, www.sgem.org, SGEM2011 Conference Proceedings/ ISSN 1314-2704, June 20-25, 2011, Vol. 3, 123-130 pp

ABSTRACT

The contribution shows the problems of underground coal gasification. Currently, this
topic is timely, seeing that many coal deposits can not mine through traditional mining
methods. Through underground gasification can be obtained from these deposits socalled
synthetic gas - syngas, which can be converted into electricity or used in industry
and households as fuel.

Underground gasification technology has been verified in laboratory conditions for
several experiments. Experiments differed from one by ways of coal bedding, using
different oxidants and ways of management. Experimental coal gasification in
laboratory conditions, which took place in the solutions of applied research projects, has
enabled us to gain knowledge about this process. We analyzed the useful, but even
harmful products this so-called "clean technology".

The contribution is divided into two parts. By comparison of two experiments
contribution analyzes the process of coal gasification in terms of produced gas - syngas.
Analysis of the gasification process in terms of syngas was focused on quality of the
produced gas, which can be characterized by its calorific value. From this perspective,
the main goal of the coal gasification process is to produce gas with the highest calorific
value. In the second part of the contribution is analyzed coal gasification process in
terms of by-product (a mixture of tar and water) and the generation of hazardous
substances that may endanger the environment.

Keywords: underground coal gasification (UCG), analysis of the produced gas and tar experimental equipment for UCG.