Flue gas cleaning for CO2 capture from coal-fired oxyfuel combustion power generation

Comparative life cycle environmental assessment of CCS technologies

“…For the coal power plant, a baseline efficiency of 43.4% (same as supercritical power plant) with an overall efficiency loss of 8.8% points is assumed (Dillion et al, 2005), and the emission factors are based on literature (Croiset and Thambimuthu, 2000;Dillion et al, 2005;IPCC, 2005;Yan et al, 2006). 90% CO 2 is assumed to be captured by condensation separation, which is then compressed, dried, and further purified before delivery to pipeline.…”

“…The Ecoinvent database provides data for average power plant in a specific geographical location, which is then adapted to estimate the emissions from the best-available technologies. Emission factors for futuristic power plant technologies are based on literature (Croiset and Thambimuthu, 2000;Dillion et al, 2005;IEA GHG, 2000in IPCC, 2005IEA, 2008;Nord et al, 2009;RatafiaBrown et al, 2002;Tan et al, 2002;Yan et al, 2006), and the inventory of the capture operation is based on process modeling data. Infrastructure for power plant and capture unit is accounted as capital investment (IPCC, 2005) attributed to various sectors in US I/O 1998 database (Suh, 2005).…”

Impurity impacts on the purification process in oxy-fuel combustion based CO2 capture and storage system

“…Therefore in order to understand the impurities' impacts on the purification system, their impacts on the thermodynamic properties must be known previously. Generally the main impurities from oxy-fuel combustion are water, non-condensable gases, such as N 2 , O 2 and Ar, and SO 2 [6]. Since the moisture (H 2 O) has been removed before the purification procedure, only the impurities, N 2 , O 2 , Ar and SO 2 , are studied in this paper.…”

“…Since the combustion takes place in a low-nitrogen environment, it produces a flue gas that consists of mainly H 2 O and CO 2 . Therefore a simplified flue gas processing (CO 2 processing), which is essential to achieve a low cost for CO 2 capture, can be used instead of conventional means of CO 2 capture, like chemical absorption [6]. Fig.…”

“…So it presents more challenges for the flue gas cleaning and processing procedures [6]. Oryshchyn [10] and White [11] have studied the processes of cleaning SO 2 and NO x ; here we mainly focus on the removal of non-condensable gases.…”