Supercritical water oxidation of coal in power plants with low CO2 emissions

Supercritical water oxidation for energy production by hydrothermal flame as internal heat source. Experimental results and energetic study

“…Nevertheless, it is known that in traditional combustion power plants, oxygen is used to improve efficiency. Donatini et al [20] simulated a power plant based on direct combustion of pulverized coal in a SCWO reactor with a system for CO 2 capture. They reported net efficiencies around 27% and found that the consumption of the air separation unit for oxygen production strongly affects the viability of the plant.…”

Supercritical water oxidation with hydrothermal flame as internal heat source: Efficient and clean energy production from waste

“…Anikeev et al [20] RKS -Bermejo et al [26] VTPR IM (NIST) a Chen et al [27] Pure water Pure water Donatini et al [15] PSRK -Dutournié et al [28] Pure water Pure water Lavric et al [6] PR PR Leybros et al [29] IM (VTPR) a IM (VTPR) a Lieball [18] IM (VTPR) a IM (VTPR) a Moussière et al [30] Ideal Mixing Ideal Mixing Moussière et al [31] IM (NIST) a IM (NIST) a Narayanan et al [32] IM (VTPR) a IM (VTPR) a Oh et al [33] IM (SR-Polar, NIST) a , b IM (SR-Polar, NIST) a , b Queiroz et al [34] VTPR PR Queiroz et al [35] VTPR PR Sierra-Pallares et al [36] VTPR VTPR Vielcazals et al [37] Pure water Pure water Zhou et al [38] IM (NIST) a IM (NIST) a Zhou et al [39] SUPERTRAPP SUPERTRAPP a IM stands for ideal mixture. The property of each pure component is calculated by the method inside parenthesis.…”

“…With the scaling up of processes and the interest in their heat integration, models taking into account mass and energy balances were developed [5,6,14,15]. To obtain accurate results from this kind of models, precise values of densities, enthalpies, and heat capacities are needed, for both water and aqueous mixtures.…”

Conversion of brown coal continuously supplied into the reactor as coal–water slurry in a supercritical water and water–oxygen mixture

“…By now, SCW conversion of brown coals has been studied in autoclave [11,12] and flow [13][14][15] modes, at continuous supply of coal-water slurry (CWS) [16][17][18][19][20], and in a cyclic pressurization-depressurization mode [21]. Besides, the problems dealing with coal combustion directly in SCW to obtain a working substance of electro-generating devices have been actively discussed [22][23][24]. The use of SCW for the coal conversion is also associated with the problems of effective use of watered fuels whose fine-grained grades are hardly subjected to dehydration.…”