@article{Dlouhý_Dupal_Dlouhý_2012, title={A Pulverized Coal-Fired Boiler Optimized for Oxyfuel Combustion Technology}, volume={52}, url={https://ojs.cvut.cz/ojs/index.php/ap/article/view/1588}, DOI={10.14311/1588}, abstractNote={This paper presents the results of a study on modifying a pulverized coal-fired steam boiler in a 250 MWe power plant for oxygen combustion conditions. The entry point of the study is a boiler that was designed for standard air combustion. It has been proven that simply substituting air by oxygen as an oxidizer is not sufficient for maintaining a satisfactory operating mode, not even with flue gas recycling. Boiler design optimization aggregating modifications to the boiler’s dimensions, heating surfaces and recycled flue gas flow rate, and specification of a flue gas recycling extraction point is therefore necessary in order to achieve suitable conditions for oxygen combustion. Attention is given to reducing boiler leakage, to which external pre-combustion coal drying makes a major contribution. The optimization is carried out with regard to an overall power plant conception for which a decrease in efficiency due to CO2 separation is formulated.}, number={4}, journal={Acta Polytechnica}, author={Dlouhý, Tomáš and Dupal, Tomáš and Dlouhý, Jan}, year={2012}, month={Jan.} }