The behavior of heat transfer and emissions in a semi-industrial 300kWth natural gas fired furnace with three pairs of regenerative flameless oxidation burners was studied. The furnace offers unique possibilities for varying burner positions and firing modes (parallel and staggered). The...

We report the characteristics of heat transfer and emissions in natural gas fired flameless oxidation conditions created using multiple semi-industrial regenerative burners. Burner positions and firing modes (parallel and staggered) are varied, and their effects on efficiency, emissions (NO, CO)...

Fly ash from the combustion of coal shows potential as a source of valuable metals like the rare earth elements (REEs). These are present in the fly ash at low concentrations. Thus, simple dry pre-processing methods that can produce REE-enriched fractions from the fly ash could improve the...

In this paper we study the relative advantage of investing in a natural gas combined-cycle (NGCC) power plant versus a coal-fired power plant with and without carbon capture and storage (CCS) technology. For the investment analysis under uncertainty, we apply fuzzy real options theory. Three...

In this paper we investigate the cost effectiveness of coal-fired CCS plants. Two different model approaches are used. First, we consider marginal costs to determine the impact of fuel and CO2 certificate prices on electricity generation cost. Second, we apply a net present value evaluation to...

Carbon capture and storage (CCS), when applied to biomass cofiring systems, can remove atmospheric CO2 since the CO2 that is consumed by the biomass during growth is not released back into the atmosphere. Biomass cofiring can also potentially contribute to meeting renewable portfolio standards...

A deep-air-staging combustion technology was previously developed to achieve reduction in NOx emissions and to eliminate strongly asymmetric combustion found in down-fired boilers. Recently, one of two down-fired 600MWe supercritical utility boilers using this technology (without applying...

Computational fluid dynamic (CFD) simulations traditionally rely on the computational efficiency of single-film global kinetic oxidation models to predict char particle temperatures and char conversion rates in pulverized coal boilers. In oxy-fuel combustion with flue gas recirculation (FGR), as...

Little work has been performed on the importance of sodium and its occurrence in coal to PM2.5 (particles less than 2.5μm in aerodynamic diameter) reduction by kaolin during O2/N2 combustion and O2/CO2 combustion at high temperatures. In this study, the combustion experiment of a treated...

The use of oxy-combustion is an attractive alternative to amine based absorption of CO2 to retrofit coal-fired power plants. The aim of this work is to compare these two carbon capture technologies taking into account environmental and economic criteria. To this end, we have developed a rigorous...