Derivation of correlations to evaluate the impact of retrofitted post-combustion CO2 capture processes on steam power plant performance

Dynamic Behavior of Coal-Fired Power Plants with Postcombustion CO2 Capture

“…Its task is to maintain the pressure level needed for the heating of the reboiler, also in part load operation of the power plant where the pressure in the crossover pipe decreases. Second, the steam tapping itself needs a throttling valve to be able to provide the steam with the right conditions for full load of the power plant where the steam in the crossover pipe exceeds the desired pressure and temperature. , This valve also serves as actuating variable in case control power shall be provided by throttling the reboiler heating. Finally, an injection cooler is needed behind the throttling valve to desuperheat the steam at full load operation.…”

Specific exergy consumption as an index for steam extraction scheme selection for CO2capture systems in coal-fired power plants

“…The traditional coal‐fired power plant equipped with MEA carbon capture is divided into two major blocks: the power and the CO 2 capture block (system). Independent of the solvent or the process configuration, the main interface quantities between the power plant and the capture system which are affecting the net power output of a coal‐fired power plant are: (i) The heat needed for solvent regeneration in the reboiler of the capture system; (ii) The electrical duty of pumps and blowers within the capture system (the CO 2 compressor and the auxiliary power of additional cooling water pumps are included); (iii) The large amounts of cooling water needed in the capture system . The power system and the capture system are relatively independent of each other, except that a portion of the flue gas stream generated from the power system is fed into the CO 2 capture system, the steam consumed in the capture system is extracted from the steam turbine in the power system, and the electrical power consumed in the capture system is provided by the power plant.…”

Efficiency evaluation procedure of coal-fired power plants with CO2 capture, cogeneration and hybridization

“…Regarding the cooling water pumps, a rough evaluation of the pumps consumption can be performed using the expression proposed by Ref. [1] based on the heat duty to be evacuated into cooling water:…”

“…On one hand, some studies propose methodologies to assess post-combustion solvent-based CO 2 capture on a retrofitted power plant [1,2] or an ideal power plant [3] and offer simulation-based correlations. In both case, the waste heat valorization is not taken into account.…”