Evaluation and Comparison of the Part Load Behaviour of the CO2 Capture Technologies Oxyfuel and Post-Combustion

Deployment of infrastructure configurations for large-scale CO 2 capture in industrial zones: A case study for the Rotterdam Botlek area (part B)

“…Lower part-load operation would lead to a too low vapor/liquid ratio in the absorber, resulting in operational problems (weeping/dumping) (Perry and Green, 2008). The IEA GHG 2012and Roeder et al (2013) showed that the heat and cooling duties are reduced at lower loads due to: (1) the lower temperature difference in the rich and lean amine solution heat exchanger as a result of the overdesigned heat exchanger area at part-load; (2) a higher rich monoethanolamine (MEA) solution loading because of an overdesign of the absorber and stripper for that load, which induces a better CO 2 mass transfer to the MEA solution (30 wt% MEA) and closer approach to the chemical equilibrium, thereby reducing the regeneration level of the rich amine flow, and thus, the regeneration heat and cooling duty (Roeder et al, 2013). The quantitative relation between the SER and part-load operation of post-combustion capture using a 30 wt% MEA solution was based on chemical process simulation data from Nienoord (2012) and Roeder et al (2013) (see Table 8).…”

“…d Roeder et al (2013) modeled the behavior of post-combustion capture using a 30 wt% MEA solution at a conventional coal-fired power plant (12-14 vol% CO2 in flue gas stream) in part-load operation. Based on communication with Roeder (2013), it was considered justified to apply the relation between the SER and part-load operation, which was presented as a graph in Roeder et al (2013), to gas streams with lower volumetric CO2 concentrations as well. Data on SER for CO2 capture from various CO2 concentration flue gas streams at full-load was taken from Nienoord (2012).…”

“…At part-load, some of the compressor modules are switched off to maintain high efficiencies. Four compressors are used for air compression at 100 and 80% load, three compressors are used at 60% load, and two compressors are used at 40% load (Roeder et al, 2013).…”

“…Liebenthal and Kather, 2011). Roeder et al (2013) modeled two compression trains and presented the SER for operation at various loads (see Table 8). A minimum technical operational load of the CO 2 treatment (drying, purification and cooling, DPC) units after the CO 2 capture process was not found in literature, nor was any information found on energy efficiency changes due to part-load operation.…”

Avaliação Da Eficiência De Processos Psa Na Remoção De Co2

“…Embora a contribuição das energias renováveis esteja crescendo de forma significativa, os combustíveis fósseis, como o carvão, continuarão a ser a principal fonte de energia do mundo durante as próximas décadas. A emissão de gases do efeito estufa de usinas movidas a carvão pode ser reduzida através do aumento da eficiência de conversão de energia ou através da separação e retenção de CO 2 , comumente referido como Carbon Capture and Storage (CCS) (Roeder et al, 2013).…”