Assessment of the different parameters affecting the CO2 purity from coal fired oxyfuel process

Kather, Alfons; Kownatzki, Sven

doi:10.1016/j.ijggc.2011.05.025

Cited by 55 publications

(19 citation statements)

References 6 publications

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“…The calculated results predicted that impurities could reduce the CO 2 storage capacity by a much greater degree than their molar fractions. Moreover, non-condensable impurities such as N 2 , O 2 and Ar, whose concentrations can be higher than 15 mol% in CO 2 from oxyfuel combustors (see, e.g., Kather and Kownatzki, 2011), bring about a maximum reduction of CO 2 storage capacity, as is seen from a minimum in the calculated pressure dependence of normalized CO 2 storage capacity. As this minimum falls into typical pressure range for CO 2 storage and at this minimum, the reduction of CO 2 storage capacity is disproportionally large, careful evaluations are required to avoid excessive loss of the storage capacity for oxyfuel CO 2 streams.…”

Section: Introductionmentioning

confidence: 99%

A study of the effect of impurities on CO 2 storage capacity in geological formations

Wang

Ryan

et al. 2015

International Journal of Greenhouse Gas Control

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Section: Introductionmentioning

confidence: 99%

A study of the effect of impurities on CO 2 storage capacity in geological formations

Wang

Ryan

et al. 2015

International Journal of Greenhouse Gas Control

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“…Certain levels of NO x and SO 2 are reported for two of the double flashing cases but these species are reported to be completely removed using the Air Products sour compression process. The distillation case from the COORAL project (Kather and Kownatzki, 2011;Kather et al, 2013) reports very high purity CO 2 at 99.94 % v/v; however, the CO 2 purity of the distillation case reported by Pipitone and Bolland (2009) is lower at 99.3 % v/v.…”

Section: Oxy-fuel Co 2 Impurities From Pulverised Coalmentioning

confidence: 96%

“…Data used to compile the table are taken from the COORAL project (Kather and Kownatzki, 2011;Kather et al, 2013), a collaborative industrial paper (Wilkinson et al, 2001), a study from the Norwegian University of Science and Technology (NUST) by Pipitone and Bolland (2009), an IEA report (Dillon et al, 2005), a paper written by Air Products (White et al, 2009) and a report on the Callide oxyfuel demonstration project (Spero et al, 2014). Table 3 shows the raw/dehumidified CO 2 has a purity in the range of 74.8 -85 %, with the main impurities being O 2 , N 2 and Ar which arise from excess oxidant and air ingress.…”

Section: Oxy-fuel Co 2 Impurities From Pulverised Coalmentioning

confidence: 99%

The range and level of impurities in CO2 streams from different carbon capture sources

Porter

Fairweather

Pourkashanian

et al. 2015

International Journal of Greenhouse Gas Control

219

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For CO 2 capture and storage deployment, the impact of impurities in the gas or dense phase CO 2 stream arising from fossil fuel power plants, or large scale industrial emitters, is of fundamental importance to the safe and economic transportation and storage of the captured CO 2 . This paper reviews the range and level of impurities expected from the main capture technologies used with fossil-fuelled power plants in addition to other CO 2 emission-intensive industries. Analysis is presented with respect to the range of impurities present in CO 2 streams captured using pre-combustion, post-combustion and oxy-fuel technologies, in addition to an assessment of the different parameters affecting the CO 2 mixture composition. This includes modes of operation of the power plant, and different technologies for the reduction and removal of problematic components such as water and acid gases (SO x / NO x ). A literature review of data demonstrates that the purity of CO 2 product gases from carbon capture sources is highly dependent upon the type of technology used. This paper also addresses the CO 2 purification technologies available for the removal of CO 2 impurities from raw oxy-fuel flue gas, such as Hg and noncondensable compounds. CO 2 purities of over 99 % are achievable using post-combustion capture technologies with low levels of the main impurities of N 2 , Ar and O 2 . However, CO 2 capture from oxy-fuel combustion and integrated gasification combined cycle power plants will need to take into consideration the removal of non-condensables, acid gas species, and other contaminants. The actual level of CO 2 purity required will be dictated by a combination of transport and storage requirements, and process economics.

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“…However, the compression and dehydration only case has the lowest capital cost expressed in €/kW-net due to its lower CO2 capture energy penalty. As one might expect, the cost of electricity increases with increasing CO2 purity, due largely to the increasing energy penalty for CO2 purification (Kather and Kownatzki, 2011;Pipitione and Bolland, 2009;Porter et al, 2015) …”

Section: Co 2 Compression and Purification System Performance And Costmentioning

confidence: 99%

Cost and performance of some carbon capture technology options for producing different quality CO 2 product streams

Porter

Fairweather

Kolster

et al. 2017

International Journal of Greenhouse Gas Control

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A techno-economic assessment of power plants with CO2 capture technologies with a focus on process scenarios that deliver different grades of CO2 product purity is presented.The three leading CO2 capture technologies are considered, namely; oxyfuel combustion, pre-combustion and post-combustion capture. The study uses a combination of process simulation of flue gas cleaning processes, modelling with a power plant cost and performance calculator and literature values of key performance criteria in order to evaluate the performance, cost and CO2 product purity of the considered CO2 capture options. For oxyfuel combustion capture plants, three raw CO2 flue gas processing strategies of compression and dehydration only, double flash system purification and distillation purification are considered. Analysis of pre-combustion capture options is based on integrated gasification combined cycle plants using physical solvent systems for capturing CO2 and sulfur species via three routes; co-capture of sulfur impurities with the CO2 stream using Selexol TM solvent, separate capture of CO2 and sulfur impurities using Dedication: This paper is dedicated to the memory of our friend and colleague, Dr. Robert M. Woolley, who made a significant input to the CO2QUEST project and whose expertise, commitment and great humour will never be forgotten.

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Assessment of the different parameters affecting the CO2 purity from coal fired oxyfuel process

Cited by 55 publications

References 6 publications

A study of the effect of impurities on CO 2 storage capacity in geological formations

A study of the effect of impurities on CO 2 storage capacity in geological formations

The range and level of impurities in CO2 streams from different carbon capture sources

Cost and performance of some carbon capture technology options for producing different quality CO 2 product streams

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