China baseline coal-fired power plant with post-combustion CO2 capture: 2. Techno-economics

Large-Scale Affordable CO2 Capture Is Possible by 2030

“…Details for the calculations and a more in-depth discussion are included as Supplemental Information. 11,20 Results are presented as marginal cost curves, plotting the estimated avoided cost for each plant as a function of the CO 2 footprint for a ''baseline capture case'' (BCC), using standard costing assumptions for hypothetical reference plants while taking into account local design features that are different for each plant (e.g., steam cycle conditions and cooling, power plant size before and after capture retrofit, and utilization hours), and an ''affordable capture case'' (ACC), which shows the cost reduction potential from costing and operating practices from five aspects mentioned earlier inspired by the example of ULE adoption. The analysis shows that the costs of CO 2 capture across the Shenhua fleet follow a distribution where the lowest cost operations can be meaningfully less than the mean, median, and highest costs.…”

“…Cost estimates for CO 2 capture have been developed for different capture technologies, different regions, and different operating conditions, but careful attention still needs to be paid to the effects of underlying assumptions. [7][8][9][10][11] Estimates based on technoeconomic modeling of reference power plants and calibrated against demonstration projects suggest significant cost reductions are needed to make CCS affordable in North America and Europe. 7,8 On average, the estimated costs for CO 2 capture in China are up to about 30% lower than in Western countries due to a variety of favorable structural features.…”

“…7,8 On average, the estimated costs for CO 2 capture in China are up to about 30% lower than in Western countries due to a variety of favorable structural features. [9][10][11] However, these mean values for costs are currently too high to justify deployment at the prevailing rates in China's regional carbon trading markets.…”

Decarbonizing the Coal-Fired Power Sector in China via Carbon Capture, Geological Utilization, and Storage Technology

“…China’s abundant domestic coal production has been a primary factor in its rapid economic growth. Coal is forecast to remain its dominant energy source through the 21st century given significant coal reserves and the nation’s massive investment in coal-fired infrastructure. , Total power generation in China increased from 1347 TWh in 2000 to 7487 TWh in 2019 with an average annual growth rate of more than 10%, and it is predicted to be more than 15 000 TWh in 2050. China has the world’s largest installed capacity of coal-fired power at 1191 GW and coal-fired power generation of 5220 TWh in 2019, which accounts for two-thirds of its total electricity generation .…”

Configuração Indicada Para Uma Planta De Captura De Co2 Para Unidades Termoelétricas

“…Em algumas usinas operando em regime de pós-combustão temse o custo de captura entre 40-43 US$ por tonelada de CO2. O principal fator se dá por um custo de capital mais baixo para implantação e a importância da poupança de capital(SINGH et al, 2018). Este processo baseia-se na capacidade de reversibilidade das reações químicas do solvente, geralmente uma amina, que neste caso absorve CO2.Os processos de absorção ocorrem em torres onde os gases de exaustão estão em fluxo contracorrente ao solvente, que pode ser monoetanolamina, dietanolamina, entre outros (LESSA, 2012).A adsorção é o processo em que a substância adsorvida fica retida na superfície da substância adsorvente, sem ser incorporada à superfície da outra.Algumas variáveis que influenciam no processo de adsorção são: temperatura, pressão, força nas superfícies dos materiais e o tamanho dos poros na superfície(LESSA, 2012).Outra modalidade de captura de CO2 é com a utilização de membranas.…”