Simulation and Exergy Analysis of a 600 MWe Oxy-Combustion Pulverized Coal-Fired Power Plant

Comprehensive investigation of process characteristics for oxy-steam combustion power plants

“…(2) As the plant configuration of oxy-steam combustion power plant becomes simple and compact, air in-leakage in oxy-steam combustion is supposed to be 1% of total gas entering into burner [8] while it is assumed as 2% [11] in oxy-CO 2 combustion. (3) Excess oxygen coefficient in oxy-steam combustion is calculated inversely through CO level in wet flue gas whilst in oxy-CO 2 combustion the excess oxygen coefficient is assumed constant at 1.05 [11,18].…”

“…Plant configurations of two conceptual 600 MWe oxy-steam and oxy-CO 2 combustion power plants [10][11][12][13], as shown in Fig. 1, are retrofitted from an air combustion power plant [14], and oxy-CO 2 combustion power plant is also chosen as the base case for comparison.…”

“…(3) Excess oxygen coefficient in oxy-steam combustion is calculated inversely through CO level in wet flue gas whilst in oxy-CO 2 combustion the excess oxygen coefficient is assumed constant at 1.05 [11,18]. (4) Recycle ratio and flow rate for each case can be derived from oxygen content requirement in oxidant.…”

Exergy Evaluation of a 600MWe Supercritical Coal-fired Power Plant Considering Pollution Emissions

“…During the past several decades, energy, exergy analysis has been widely used for the evaluation of different kinds of thermal power plants [1][2][3][4], and parametric optimization [1] and cogeneration conversion of a conventional coal-fired power plant [4] based on thermodynamic analysis are studied respectively. An oxy-combustion pulverized coal-fired power plant was simulated with Aspen plus software in [5], and operation characteristics and CO2 concentration in flue gas were studied based on the simulation. The main objective of this paper is to perform a thermodynamic analysis using design data of an actual power plant in china.…”

Evaluation of the potential of retrofitting a coal power plant to oxy-firing using CFD and process co-simulation

“…From the view point of the economic and safe operation of the plant, it is desirable that these changes do not deviate too much from designed air-firing conditions after retrofitting of an existing conventional power plant [1]. Whole plant process computer simulation as a flexible and economic tool has been widely employed in modelling power plant operation for both air and oxy-fired scenarios [2][3][4]. However, a major challenge for large scale whole plant process simulation lies in the difficulty in accurately modelling the combustion and thermal characteristics of the boiler where complex fluid dynamics dominates and the heat transfer characteristics are strongly affected by the fundamental properties of the oxidant gas and boiler geometries.…”