2022
DOI: 10.3390/en15020515
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CO2 Capture from IGCC by Low-Temperature Synthesis Gas Separation

Abstract: Capture conditions for CO2 vary substantially between industrial point sources. Depending on CO2 fraction and pressure level, different capture technologies will be required for cost- and energy-efficient decarbonisation. For decarbonisation of shifted synthesis gas from coal gasification, several studies have identified low-temperature CO2 capture by condensation and phase separation as an energy- and cost-efficient option. In the present work, a process design is proposed for low-temperature CO2 capture from… Show more

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Cited by 9 publications
(4 citation statements)
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“…The CO 2 fraction, and correspondingly the partial pressure, are highly dependent on the fossil energy source, as well as the reforming/gasification and the hydrogen separation technologies. Oxygenblown coal gasification can provide pressurised syngas with a sufficiently high CO 2 fraction, allowing for a high CO 2 capture ratio through the direct use of low-temperature CO 2 separation [28][29][30].…”
Section: Co 2 Capture In Pre-combustion Syngas and Hydrogen Productio...mentioning
confidence: 99%
See 1 more Smart Citation
“…The CO 2 fraction, and correspondingly the partial pressure, are highly dependent on the fossil energy source, as well as the reforming/gasification and the hydrogen separation technologies. Oxygenblown coal gasification can provide pressurised syngas with a sufficiently high CO 2 fraction, allowing for a high CO 2 capture ratio through the direct use of low-temperature CO 2 separation [28][29][30].…”
Section: Co 2 Capture In Pre-combustion Syngas and Hydrogen Productio...mentioning
confidence: 99%
“…Minimum temperature approach constraints are set to 3 °C for MS-HX1, MS-HX2, and AUX-HX1, and 2 °C in the cold end of AUX-HX2, where the temperature is relatively close to the freeze-out temperature for CO2. As discussed in [30], and based on [40], −53 °C/−55 °C on the tail gas/refrigerant sides in the cold end of AUX-HX2 is unlikely to pose any risk of CO2 freeze-out, and even lower separator temperatures may be applicable. At the main separator inlet, the liquid mass fraction in the partially condensed tail gas stream is around 0.80, with 90.1% of the CO2 liquefied.…”
mentioning
confidence: 99%
“…However, several works were related to vapor-liquid equilibrium and therefore limited to gas purifications having a high concentration of CO2 in the feed stream [25,26]. For instance, Berstad et al [27] analysed low-temperature CO2 capture processes from IGCC plants by condensation and phase separation, identifing feasible design configurations and determinging a specific energy requirement of around 300 kJ kgCO2 -1 with a CO2 capture recovery of 85%.…”
mentioning
confidence: 99%
“…However, several works were related to vapor-liquid equilibrium and, therefore, were limited to gas purifications having a high concentration of CO 2 in the feed stream [25,26]. For instance, Berstad et al [27] analyzed low-temperature CO 2 capture processes from IGCC plants by condensation and phase separation, identifying feasible design configurations and determining a specific energy requirement of around 300 kJ kg CO2 −1 with a CO 2 capture recovery of 85%.…”
mentioning
confidence: 99%