Purpose. A mathematical model development for heat transfer during underground coal gasification based on the transcendental equation solution by Newton-Raphson method. Methods. The heat-transfer is research into a temperature field with variable size of zone when passing through phase transformation boundary, which changes abruptly. seam T(x, t) and displacement length transition boundary S(t)...

To lower stability requirement of gas production in UCG (underground coal gasification), create better space and opportunities of development for UCG, an emerging sunrise industry, in its initial stage, and reduce the emission of blast furnace gas, converter gas, and coke oven gas, this paper, for the first time, puts forward a new mode of utilization of multiple gas sources mainly including gr...

Bergman, I., and Casswell, C. (1972). Brit. J. industr. Med., 29, 160-168. Lung dust and lung iron contents of coal workers in different coalfields in Great Britain. Lung dust analyses from seven coalfields are studied and it is found that the average dust composition varies significantly with the rank of coal. The higher the rank, the higher the coal percentage and the lower the quartz percent...

I am pleased to be here today to share with you our views about the benefits that Integrated Gasification Combined Cycle (IGCC) technology can deliver. IGCC can cost effectively produce power from solid fuels, such as coal, with substantial environmental benefits over other coal power generation technologies. If IGCC is adopted as the preferred coal based power generation technology, it will he...

Aspects in Mining & Mineral Science Contaminant Formation and Release During Underground Coal Gasification Process at High Pressure Regime Olga Solcova1*, Karel Soukup1, Frantisek Kastanek1, Ywetta Maleterova1 Krzysztof Kapusta2 1Institute of Chemical Fundamentals the CAS, Rozvojová 135, CZ-165 02 Prague 6, Czech Republic 2Główny Instytut Górnictwa (Central Institute), Plac Gwarków 1, PL-40-166...

Researchers have worked on routing issues for adhoc-networks, VANET’s, and Wireless Sensor Networks in a normal scenario; recently there has been a recent trend towards the study on underground wireless networks and proposals for design and development for Wireless Underground Sensor Networks. This paper highlights the concept of wireless underground sensor network in the coal mine environment,...

This paper addresses the question of whether adopting safety culture improves hazard prevention in enterprises characterized by high primary risk. To answer this question, sample underground coal mines were examined to investigate the basic elements of the safety culture of employees. This paper presents the results of a diagnosis of the basic elements of the safety culture of supervisors (midl...

AIM Several studies suggest that coal miners are under risk of severe health problems such as cardiovascular, pulmonary, neurological, renal, hematological and musculoskeletal disorders. However, there are limited data on biochemical changes in underground workers. In our study we aimed to evaluate the association between serum homocysteine (Hcy), vitamin B12, cystatin C and folate levels in th...

Corrosion of metallic materials by coal gasification atmospheres has been the subject of extensive study for over 20 years. While many alloys were found to be resistant to attack by high moisture content gases representative of fluidized bed gasifiers at temperatures up to 900 OC, good resistance could not be sustained for more than a few thousand hours as a result of changes in the structure a...