Coal is an abundantnatural resourcethat can be used as a source ofenergy, as a chemical source from which numeroussyntheticcompounds(e.g.,dyes,oils,waxes, pharmaceuticals, andpesticides) can be derived, and in the production of coke formetallurgical processes. Coal is a major source of energy...
of wind turbines by close to one-third in the past eight years.In many parts of the world renewable energy is already a principal energy source.In Scotland,for example,wind turbines provide enough electricity to power 95 percent of homes.While the rest of the world takes the lead,notably ...
www.cornerstonemag.net 5 COVER STORY Shenhua's groundbreaking 1080-ktpa Ordos direct coal liquefaction facility is an example of the major CTL advancements occurring in China. Coal-to-Olefins Coal-to-Gas Currently, there are two commercial coal-to-olefin technologies: the coal-to-methanol-to-...
Therefore, this paper proposes an improved CRITIC method to evaluate and select suppliers based on the short-term delivery data of coal-electricity integrated enterprises. In the improved CRITIC method, the conflicting value ranges of indicators ignored in the traditional CRITIC method is considered. ...
This Coal Sorter Is an Example of the Type of Cutting Edge Innovation that Will Be Necessary for the Coal Industry to Maintain Competitiveness 16 RELENTLESS INNOVATION TO STAY COMPETITIVE Step‐change innovations are relatively rare in any mining or process industry. They do occur, of course, but...
The calculation process of the box dimension at 140 μs for the NRW-3 specimen was detailed in the previous section as an example. Similarly, the same processing was performed on the crack images of other coal and rock specimens to calculate the entire process from crack initiation to fragment...
When gassy, a coal seam is considered an unconventional reservoir for a few reasons: 1. the permeability of coal is low (compared to sandstones, for example), 2. coal is a source as well as a reservoir (and thus is considered to be a “continuous reservoir”), 3. a coal reservoir ne...
Along with other greenhouse gasses, coal-fired power plants typically emit 1.0 kg of CO2 per kW of electricity production [9]. Hence, advanced technologies are required to reduce emissions and increase thermal efficiency simultaneously. One such technology is gasification, which can efficiently convert...
Coal is a resource primarily used for electric power generation, and currently supplies 41% of global electricity needs. Coal can also be considered as an economic source of strategically important elements, such as Ge, Ga, U, V, Se, rare earth elements, Y, Sc, Nb, Au, Ag, and Re, ...
Take economic evaluation as an example, Table 1 displays the review of main previous works on the evaluation of related subtopics in coal field. However, they seldom focus on the comprehensive competitiveness of this industry, which greatly increases the management difficulty of enterprises managers ...