The Clean Coal Technology (CCT) Demonstration Program is a government and industry co-funded effort to demonstrate a new generation of innovative coal utilization processes in a series of " showcase " facilities built across the country. These projects are carried out on a sufficiently large scale to prove commercial worthiness and generate data for design, construction, operation, and technica...

Clean coal technologies are described, through which it is possible to reduce or completely eliminate emissions of CO2 and other pollutants into the atmosphere. Due impact on climate change, particular attention has been devoted possibility capture sequestration CO2. The profitability such procedures evaluated, based upon development projects being conducted around world. Modern stone coal-fi r...

The potential for improved selectivity has made column flotation cells a popular choice for upgrading fine coal. Unfortunately, recent production data from full-scale column plants indicate that many industrial installations have failed to meet original expectations in terms of clean coal recovery. Theoretical studies performed using a simple dispersion model showed that this inherent shortcomi...

A well-designed CFB combustor can burn coal with high efficiency and within acceptable levels of gaseous emission. In this study, the combustion efficiency of CFB combustor based on the losses has been defined and effects of operational parameters on combustion efficiency have been investigated by a dynamic 2D model which has been developed in our previous studies. Investigations on combustion ...

Nanoscience and technology have grown explosively in the last decades, because of various synthesis procedures and characterization techniques [1]. From the nineteenth century, carbon nanoparticles are one among the blooming fields of research and have been in constant limelight since then, due to its unique physical and chemical properties, making it a whole host of applications ranging from c...

Fischer-Tropsch synthesis is a part of Gas-to Liquids (GTL), Biomass-to-Liquids (BTL) and Coal to Liquids (CTL) technologies, which produce alternatives clean fuels from natural gas, biomass and coal. The catalytic performance of cobalt catalysts in Fischer-Tropsch synthesis strongly depends on the size of cobalt particles in nanoscale range (6-30 nm). Cobalt catalysts are usually prepared via ...

In order to realize the promise of a hydrogen economy in this United States, it is essential to couple it with a simultaneous commitment to improve energy efficiency and increase the use of renewable energy. In this study, using detailed scenario analyses for the country as a whole and for urban areas, we found that a large-scale switch to hydrogen produced by a clean energy system would lead t...

Global surface temperature anomaly yields serious consequences in the inhabited environment, which is considered responsible for the rising of sea levels, shrinkage of snow-covered areas, shortage of fresh water, and the disasters caused by abnormal weather. Accumulation of CO2 in the atmosphere is considered responsible for the global temperature anomaly, and industrial activities have acceler...

In support of technology development to utilize coal for efficient, affordable, and environmentally clean power generation, the Power Systems Development Facility (PSDF), located in Wilsonville, Alabama, has routinely demonstrated gasification technologies using various types of coals. The PSDF is an engineering scale demonstration of key features of advanced coal-fired power systems, including...