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UNDERGROUND COAL GASIFICATION IN LABORATORY CONDITIONS
Abstract
The contribution shows the problems of unde rground 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 so- called synthetic gas - syngas, which can be conve rted into electricity or used in industry and households as fuel. Underground gasification technology has been verified in laboratory conditions for several experiments. Experiments differed fr om 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 pa rts. By comparison of two experiments contribution analyzes the process of coal ga sification 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 contributi on 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.
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References6
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Slovak Republic Law No. 282/2010, Prescription of Slovak Repuplic goverment for threshold values and list of units underground waters, part 110 page 2328.
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