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4.191  Articles
1 of 420 pages  |  10  records  |  more records»
Today one of the main problem for areas of intense technological activities related to the production, processing and use of fossil fuels is management and environmental protection. With the current technology development difficult to achieve effective re... see more

Underground coal gasification (UCG) is a technological process, which converts solid coal into a gas in the underground, using injected gasification agents. In the UCG process, a lot of process variables can be measurable with common measuring devices, bu... see more

Underground coal gasification (UCG) proceeds generally in the presence of an ash layer on coal (or char) surface. The ash layer increases the mass transfer resistance of O2 to the gasification surface, which may become the limiting step of whole process. ... see more

Grounded technological scheme of energetic module, based on the use of underground energy combustion or gasification of coal deposits.The main elements of the energetic module: 1) waste heat exchanger working levels; 2) channels that combine working level... see more

In the underground coal gasification (UCG) process, cavity growth with crack extension inside the coal seam is an important phenomenon that directly influences gasification efficiency. An efficient and environmentally friendly UCG system also relies upon ... see more

Relying upon the theory and practice of Podzemgaz stations operation, the paper has analyzed the basic factors working on the efficiency of underground coal gasification;  moreover, it has estimated their function in the formation of gas loss from un... see more

Currently, coal is the main natural energy carrier in Ukraine due to its limited resources of oil and natural gas. A promising method for extracting coal is underground gasification using thermochemical and mass-exchange processes. This study was aimed at... see more

Underground Coal Gasification (UCG) is a new emerging clean coal technology. It holds promise for reaching and making use of very deep coal seams that technically could not otherwise have been mined at these depths. UCG technology and knowledge developed ... see more

The energy issue is one of the most significant issues for Ukraine due to its lack of energy supplies. Coal remains are the main fuel and power resource, which will fulfill the need for chemical raw material for the next few centuries. The problem of coal... see more

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