CO₂Recovery via Coal Combustion in Mixtures of Oxygen and Recycled Flue Gas

Thermal and chemical contributions of added H2O and CO2 to major flame structures and NO emission characteristics in H2/N2 laminar diffusion flame

“…The breakdown of CO 2 may alter the C1-and C2-pathways directly while that of H 2 O may increase the population of chain carrier radicals and so there may exist super-equilibrium effects in flame structure and NO emission behaviour (Park et al, 2001a). For the extensive application of the fuels of low calorific heating value and of their combined form to industrial combustors further cautious inspection may be, in the present status, required to distinguish the chemical and thermal effects clearly in the flame structure and NO emission characteristic since these effects have been failed to notice in most of previous researches (Payne et al, 1989;Hainsworth et al, 1996;Li and Williams, 1999). Basically, the combined forms of CO 2 and H 2 O) with H 2 /N 2 fuels help us clearly observe the chemically altered flame structure especially due to the breakdown of H 2 O and CO 2 .…”

Combustion modelling opportunities and challenges for oxy-coal carbon capture technology

“…Although the first application of fuel burnt in high purity O 2 was as early as the 1900s for welding and cutting (Carlisle, 2004), it was not until the early 1980s that the use of RFG was proposed for the purpose of producing a CO 2 stream of high purity for use in Enhanced Oil Recovery, EOR (Abraham et al, 1982), and to simultaneously reduce the environmental impacts from the use of fossil fuels in energy generation (Horn and Steinberg, 1982). Pilot scale and demonstration plant studies were subsequently carried out by Argonne National Laboratories and the Energy and Environmental Research Corporation (Payne et al, 1989;Abele et al, 1987;Weller et al, 1985) with corresponding numerical modelling investigations (Berry and Wolsky, 1986;Wang et al, 1988). During the 1990s, the technology received further interest for greenhouse gas and NO x reduction with pilot-scale studies conducted in a project led by the International Flame Research Foundation (Woycenko et al, 1995) and in work carried out by Ishikawajima Harima Engineering to consider oxyfuel retrofits to Japanese boilers (Nozaki et al, 1997;Kiga et al, 1997;Kimura et al, 1995;Nakayama et al, 1992).…”

Characteristics of Oxyfuel and Air–Fuel Combustion in an Industrial Water Tube Boiler

“…It was concluded that knowledge of flame properties in CO 2 /O 2 system was necessary to predict the flame structure. The potential changes in flame stability and pollutant formation were also noted by other researchers [Croiset and Thambimuthu (1999) and Payne (1989)]. …”