coal testing Articles
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How coke is created in a coal testing oven or pilot plant
Thanks to huge advances in metallurgy over the last three decades, 21st century steel production is transforming the globe and the built environment. Of course, a major part of the steel production process is the use of coke, which provides as much as 80% of the furnace's thermal requirements, the majority of the furnace's CO gas (which acts as a reducing reagent) and carbon for dissolution in ...
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The structural break and elasticity of coal demand in China: empirical findings from 1980-2006
Coal is the principal primary energy source in China. Research on coal demand is vital for informing China's economic development. In this paper, the theoretical structural break of coal demand was tested using annual time series data from 1980 to 2006. Results indicate that coal demand underwent an intercept structural break during the period 1997-2000 (from −0.536 breaking to −0.702). Then ...
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Influences of temperature and moisture on coal sorption characteristics of a bituminous coal from the Sydney Basin, Australia
Accurate testing of coal isotherms plays a significant role in the areas of coal seam gas drainage, outburst control, CO 2 geo-sequestration, coalbed methane (CBM) and enhanced coalbed methane recovery (ECBM). Coal isotherms were tested with CO 2 and CH 4 gases with a modified indirect gravimetric method in the University of Wollongong (UOW), Australia. The adsorption capacity of coal ...
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Experimental studies on hydrophobic flocculation of coal fines in aqueous solutions and flotation of flocculated coal
Hydrophobic flocculation of fine bituminous coal particles in aqueous solutions under mechanical conditioning and without any surfactants has been experimentally studied through the measurements of aggregative efficiency, zeta potential and contact angle in this work. The results have shown that the hydrophobic coal fines strongly aggregated in a wide pH range (3.5?9.5), even though the particle ...
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Laboratory scale tests of coal-based hydrogen production with CO2 capture in the aspect of clean coal technologies
In the light of continuously increasing oil prices as well as stronger environmental regulations, an important issue becomes finding an alternative to fossil fuels. Scientists agree that hydrogen seems to be an ideal, price-competitive and environment-friendly future energy carrier. One of the most effective methods of hydrogen production is the process of steam gasification of coal to ...
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Airex Energy supply biocoal pellets to Portland General Electric’s Boardman Plant
Continuing its years-long investigation of whether torrefied biomass could extend its life, Boardman Power Station is prepping to undergo a substantive test burn. Trial by Fire Boardman Power Station is feeling the heat. The last operating coal-burning power station in Oregon, the relatively young, 550-MW plant has faced much pressure and scrutiny regarding its ultimate fate, which must be ...
By Airex Energy
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Prediction of demand trends of coking coal in China based on grey linear regression composition model
The scarce of coking coal resources in China results in its short supply. By establishing a grey linear regression composition model, this paper has greatly improved the inadequacy of grey system prediction model and regression analysis method in trend prediction and finished the prediction of demand trends of coking coal in China with this model. As result of the prediction, it is estimated that ...
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Toxicity of sediments potentially contaminated by coal mining and natural gas extraction to unionid mussels and commonly tested benthic invertebrates
Sediment toxicity tests were conducted to assess potential effects of contaminants associated with coal mining or natural gas extraction activities in the upper Tennessee River basin and eastern Cumberland River basin in the United States. Test species included two unionid mussels (rainbow mussel, Villosa iris and wavy‐rayed lampmussel, Lampsilis fasciola, 28‐d exposures), and the commonly ...
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Biomass to Replace Coal
Replacing coal with biomass as fuel? It could happen soon, thanks to the development of a technology that transforms biomass into biocoal. In Québec, this innovative process has been developed by Airex Energy, which opened the very first demonstration plant in Canada in December 2015 in Bécancour. Biocoal is made by torrefying biomass. In short, residual biomass (forestry, ...
By Airex Energy
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