At present, China's energy industry is undergoing revolutionary changes, in a critical period of new and old kinetic conversion low-carbon transformation, which the digital economy plays an important role supply, green consumption clean production. In face problems heavy secondary structure, coal consumption, low utilization efficiency, insufficient supply key minerals we should actively use to...

Last spring the walls of the Metro in Washington, DC.were plastered with advertisements asserting, “there is no such thing as clean coal.” That is true, but in the future it need not be. While talk has been plentiful, and action painfully slow, commercial-scale systems to capture CO2 and sequester it in deep underground will soon be built in the U.S., EU, Australia, and China. With experience, ...

Coal combustion and mercury pollution are closely linked, and this relationship is particularly relevant in China, the world's largest coal consumer. This paper begins with a summary of recent China-specific studies on mercury removal by air pollution control technologies and then provides an economic analysis of mercury abatement from these emission control technologies at coal-fired power pla...

INTRODUCTION Environmental impacts from large-scale commercialization of coal liquefaction are important to government, industry, the public, and a variety of interest groups. This report reviews environmental issues associated with coal liquefaction processes by addressing the following topics: ● A comparison of the environmental differences among technologies; “ A comparison of the impacts am...

Recent regulations have required reductions in emissions of nitrogen oxides (NOx) from electric utility boilers. To comply with these regulatory requirements, it is increasingly important to implement state-of-the-art NOx control technologies on coal-fired utility boilers. This paper reviews NOx control options for these boilers. It discusses the established commercial primary and secondary con...

Coal desulfurization prior to usage is a preprocessing in order to achieve clean fuel and reduce environmental impacts such as acid rain. Desulfurization of Lakhra (Pakistan) coal was conducted with different solvents. Coal was leached with different solvents like hot water, H2O2/H2SO4 and HNO3. It was found that the effects of the leaching temperature, agitation time and particle size on the r...

An estimated 229,000 m(3) of coal fly ash remains in the river system after dredging to clean-up the 2008 Tennessee Valley Authority (TVA) spill in Kingston, Tennessee. The ash is heterogeneous with clear, orange and black spheres and non-spherical amorphous particles. Combustion produces iron oxides that allow low field magnetic susceptibility (χ(LF)) and percent frequency dependent susceptibi...

Oxy-fuel combustion is a clean coal technology based on firing fuel in an enriched oxygen atmosphere to obtain a high CO2 concentration in the off-gases. This technology can be combined with the co-firing biomass and the use of blends of coal and biomass can compensate for the fact that the gas properties in the furnace in an oxycombustion process differ from the air-firing case (oxy-firing flu...

Introduction What can the canary in the coal mine tell us? Historically, canaries accompanied coal miners deep underground. Their small lung capacity and unidirectional lung ventilation system made them more vulnerable to small concentrations of carbon monoxide and methane gas than their human companions. As late as 1986, the acute sensitivity of these birds served as a biological indicator of ...

It is estimated that around the middle of this century China requires an installed capacity up to 1 200 GW. In order to realise this target, fully taking into account the production capacity of coal, oil, natural gas and the renewable energy sources such as waterpower, a fairly large gap still remains. To fill in this gap, the nuclear power is regarded as a best choice in China case because it ...