Szczegóły publikacji
Opis bibliograficzny
Methane in Polish coal mines - methods of control and utilisation / N. SZLĄZAK, D. OBRACAJ, M. BOROWSKI, J. SWOLKIEŃ, M. KORZEC // W: 24th World Mining Congress proceedings [Dokument elektroniczny] : mining in a world of innovation : October 18–21, 2016, Rio de Janeiro/RJ, Brazil / Instituto Brasileiro de Mineração. — Wersja do Windows. — Dane tekstowe. — Rio de Janeiro: IBRAM, 2016. — S. 287–297. — Wymagania systemowe: Adobe Reader. — Tryb dostępu: http://www.wmc2016.org.br/BOOK_PAPERS/08_UNDERGROUND_MINING_0... [2016-11-02]. — Bibliogr. s. 297, Abstr. — Publ. w cz. Underground Mining
Autorzy (5)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 102036 |
|---|---|
| Data dodania do BaDAP | 2016-12-16 |
| Rok publikacji | 2016 |
| Typ publikacji | materiały konferencyjne (aut.) |
| Otwarty dostęp |  |
Abstract
Methane hazard often occurs in hard coal mines and causes very serious accidents and can be the reason of methane or methane and coal dust explosions. History of coal mining shows that methane released from the rock mass to the longwall area was responsible for numerous mining disasters. In Poland coal seams are mined in 30 mines only by means of underground longwall system of excavation. All kinds of natural hazards, that can occur in underground environment, are present in Polish coal mines. Total output of hard coal production in 2014 was 72,5 million tons, of which 78% came from gassy coal seams. The quantity of methane captured in Polish coal mines is growing every year. In 2014 the amount of captured methane exceeded 37% of mines’ absolute methane bearing capacity. Owing to adequately selected ventilation and methane drainage systems, the effectiveness of methane drainage process reached up to 70%. The paper presents the methane drainage efficiency for different systems used in Polish coal mines. Methane captured by drainage system is utilized in varying degrees. It is worth noting that this tendency has been increasing each year. In 2014 about 70% of captured methane brought economical benefits. The paper presents the ways of methane utilization and the work to be undertaken in improving its development. In Poland, depending on the methane quality and quantity, the CMM is used in various projects. They include heat production through gas combustion in boilers or technological installations (e.g. coal drying plant), cogeneration of power and hot water, cogeneration of power and technological steam, cogeneration of power and factor of drying process, cogeneration of heat, cool and power and electricity generation in combined systems.
