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Proposed Process and Design Considerations for Air Separation and CO 2 Purification in a 100 MWe Oxy–Coal Power‐Generation System
Author(s) -
Lee Hookyung,
Choi Sangmin,
Mun Heungman,
Seo Sangil
Publication year - 2013
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201200017
Subject(s) - air separation , process engineering , separation (statistics) , coal , combustion , power station , gas compressor , air compressor , electricity generation , separation process , environmental science , power (physics) , waste management , engineering , computer science , chemistry , chemical engineering , mechanical engineering , electrical engineering , thermodynamics , oxygen , physics , organic chemistry , machine learning
Oxy–coal combustion is one of the most promising approaches for carbon capture and storage associated with large‐scale coal‐fired power stations. This paper presents the results of a study on air‐separation and CO 2 ‐purification processes in terms of a conceptual design for an oxy–coal combustion system for 100 MWe (electrical) power generation. Feasible processes and design considerations for air separation and CO 2 purification are proposed that take into account the operational stability of the overall plant before its demonstration. Air separation by using a double column, which has two main air compressors, to produce 95 % purity gaseous O 2 is proposed. Two possible cases for cryogenic separation according to the phase of the captured CO 2 are considered. In addition, we consider the installation and management of the air‐separation and CO 2 ‐purification units to demonstrate the 100 MWe oxy–coal power plant and methods to reduce power consumption in the processes.