Underground coal gasification – world experience and experiments performed in experimental mine Barbara

The idea and objectives of underground coal gasification process is presented. World experience in the past and particularly in the present state as well as plans of companies dealing with UCG for the future is shown. The plans of work in the UCG in different countries are shortly described and discussed. The aims and a short description of project cofounded by RFCS, titled Hydrogen Oriented Underground Coal Gasification for Europe (HUGE) is presented. Results of the project, from ex-situ reactor constructed for simulation underground conditions are presented and discussed. Also some results from underground trial are presented. The trial performed in underground seam was successful and we learned how to control the process safely, how to chose gasification media and how influence on the quality of gas composition. The experiment has been performed in dammed space. The obtained gas product of heating value 2.5–10 MJ/m3 was combustible during the whole sixteen days experiment. It was found that there is possible to obtain up to 40% of hydrogen in UCG process. The most important issues in UCG are safety problems (avoiding of gases explosion) and environmental issues (mainly water contamination).

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Podziemne zgazowanie węgla – doświadczenia światowe i eksperymenty prowadzone w KD Barbara

węgiel, zgazowanie podziemne, eksperymenty, technologie

Podziemne zgazowanie węgla (PZW), którego koncepcja powstała na początku ubiegłego wieku w Anglii, jest metodą pozyskiwania energii z węgla bezpośrednio w miejscu jego zalegania (in situ) poprzez doprowadzenie czynnika zgazowującego do zapalonego złoża i odbiór wytworzonego gazu na powierzchni. W porównaniu do metod zgazowania w reaktorach powierzchniowych, PZW jest procesem dużo bardziej złożonymi trudnym w realizacji. W artykule przedstawiono obecny stan rozwoju technologii podziemnego zgazowania węgla oraz plany firm zaangażowanych w rozwój tych technologii. Przedstawiono również wybrane wyniki badań uzyskanych w koordynowanym przez Główny Instytut Górnictwa projekcie badawczym Hydrogen Oriented Underground Coal Gasification for Europe (HUGE).

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