Part load operation of natural gas fired power plant with CO2 capture system for selective exhaust gas recirculation

Qureshi, Yamina; Ali, Usman; Sher, Farooq

doi:10.1016/j.applthermaleng.2021.116808

Cited by 95 publications

(16 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Wei et al [15,16] investigated the pollutant formations of the impinging flame and found that the CO and NOx emission can be improved by the flame-quenching process. Furthermore, CO 2 is considered as a major contributor to global warming [17][18][19], and its emission during the flame impingement also needs to be studied with the increasingly stringent regulations. Overall, it is known that quite a few studies have been conducted to study the pollutant emissions of an imping flame, especially for the multiple impinging flame jets.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Heat Flux Distribution and Pollutant Emissions of Slot LPG/Air Premixed Impinging Flame Array

Zhen

Liu

et al. 2021

Energies

View full text Add to dashboard Cite

Experiments were carried out to investigate the heat transfer and pollutants emission characteristics of a slot LPG premixed flame array impinging normally onto a flat plate. The effects of jet-to-jet spacing (S/de), nozzle-to-plate distance (H/de), and jet Reynolds number (Re) on the heat flux and emission index of CO, CO2, and NOx/NO2 were examined. In addition, the thermal and emission characteristics between slot jets and circular jets were compared under identical experimental conditions. The results show that the more uniform heat flux distribution and higher total heat flux can be obtained at moderate jet-to-jet spacing, large jet-to-plate distance, and higher Reynolds number. EICO emissions can be influenced by the combined effects of jet-to-jet spacing, jet-to-plate distance, and higher Reynolds number. For the sake of the better combustion efficiency and lower EICO emission, the moderate jet-to-jet spacing (S/de = 2.5), larger jet-to-plate distance (H/de = 4), and relatively higher Reynolds number (Re = 1500) are preferred for the slot jet flame array. Furthermore, it is found that there exists a trade-off between the EICO and EINOx of the slot LPG flame array. Compared with multiple circular flame jets, multiple slot flames jets have the higher area-averaged heat flux due to the larger heating area and more uniform heat flux distribution, while the higher EICO emission and lower EINOx emission are due to the greater jet interaction suppressing the air entrainment. Thus, it is known that the slot flame array has a better heating performance but relatively higher pollutant emissions than the circular flame array.

show abstract

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Heat Flux Distribution and Pollutant Emissions of Slot LPG/Air Premixed Impinging Flame Array

Zhen

Liu

et al. 2021

Energies

View full text Add to dashboard Cite

show abstract

“…The emission of greenhouse gases, especially CO 2 , is the main cause of global warming. Carbon reduction has become a top global concern. , Carbon capture, utilization, and storage (CCUS) is the key technology to reduce carbon emissions − and plays an important role in reducing CO 2 emissions in coal-fired power plants (CFPP). In addition, this technology is also an important way for China to achieve the carbon peaking and carbon neutrality goals proposed in 2020 …”

Section: Introductionmentioning

confidence: 99%

Integrated Energy-Saving Superstructure and Optimization of the MEA-Absorption CO₂ Capture System in a Coal-Fired Power Plant

Ke-fang

Wang

et al. 2023

Energy Fuels

View full text Add to dashboard Cite

Methods called superstructure optimization (i.e., design optimization to synthesize a system process and parameter synchronization) are applied to an integrated energy-saving system for CO2 capture in this paper. First, the schemes of energy recovery including lean solution, condensate, and overhead gas (CO2 + H2O stream) in 1 million ton annual output of a CO2 capture system are investigated. Integrated energy-saving and possible and optimal schemes for the CO2 capture system are proposed, and an integrated energy-saving superstructure that contains these possible schemes is established. Second, optimal mathematical models describing the superstructure are established. The integrated energy-saving schemes and thermodynamic properties are obtained through the optimization method. Finally, sensitivity analysis for the optimal integrated energy-saving schemes is performed. The best schemes of the integrated energy-saving CO2 capture system through the optimization method are summarized as follows: The fifth extracted steam expands to the best pressure in the BPT. Then, the exhaust steam releases heat to become the subcooled water and enters an absorption refrigerator. The waste heat of the overhead gas is recycled by the absorption refrigerator. The waste heat of the lean solution is recycled by enlarging the lean-rich solution heat exchanger. Compared to the original system, the energy-saving ratio of heat consumption is 18.55% and the energy-saving ratio of electric consumption is 59% in the best schemes. Moreover, the sensitivity analysis indicates that there are minor changes in the operating parameters when the variable factors (bank discount rate i, price change rate of electricity and fuel i R, and unit price of equipment) are within the variation range of 20%, but there is no effect of the variable factors on the optimal schemes.

show abstract

“…However, the current crisis in Ukraine is expected to cause rapid policy changes worldwide, especially in Europe, where several sectors are pressuring policy-makers to reduce and eventually cease energy imports from Russia. Sustainable processes for converting renewable energy sources need to be developed [13] and this will depend on multiple solutions in the future, including e-fuels [14,15], biofuels [16,17] and carbon capture [18,19]. Renewable energy sources (e.g., wind, sun, geothermal, biomass) are generally proposed as substitutes for fossil fuels for electricity generation.…”

Section: Introductionmentioning

confidence: 99%

Iron as a sustainable chemical carrier of renewable energy: Analysis of opportunities and challenges for retrofitting coal-fired power plants

Debiagi,

da Rocha,

Scholtissek

et al. 2022

Preprint

View full text Add to dashboard Cite

As a result of the 2021 United Nations Climate Change Conference (COP26), several countries committed to phasing down coal electricity as soon as possible, deactivating hundreds of power plants in the near future. CO 2 -free electricity can be generated in these plants by retrofitting them for iron combustion. Iron oxides produced during the process can be collected and reduced back to metallic iron using H 2 , in a circular process where it becomes an energy carrier. Using clean energy in the recycling process enables storage and distribution of excess generated in periods of abundance. This concept uses and scales up existing dry metal cycle technologies, which are the focus of extensive research worldwide. Retrofitting is evaluated here to determine feasibility of adding these material requirements to markets, in the context of current plans for decarbonization of steel industry, and policies on hydrogen and renewable electricity. Results indicate that not only for a single power plant, but also on larger scales, the retrofitting plan is viable, promoting and supporting advancements in sustainable electricity, steel industry and hydrogen production, converging necessary technological and construction efforts. The maturation and first commercial-scale application of iron combustion technology by 2030, together with developing necessary reduction infrastructure over the next decades, would pave the way for large-scale retrofitting and support the phasing out of coal in many regions. The proposed plan represents a feasible solution that takes advantage of existing assets, creates a long-lasting legacy for the industry and establishes circular energy economies that increase local energy security.

show abstract

Part load operation of natural gas fired power plant with CO2 capture system for selective exhaust gas recirculation

Cited by 95 publications

References 41 publications

Experimental Investigation on the Heat Flux Distribution and Pollutant Emissions of Slot LPG/Air Premixed Impinging Flame Array

Experimental Investigation on the Heat Flux Distribution and Pollutant Emissions of Slot LPG/Air Premixed Impinging Flame Array

Integrated Energy-Saving Superstructure and Optimization of the MEA-Absorption CO₂ Capture System in a Coal-Fired Power Plant

Iron as a sustainable chemical carrier of renewable energy: Analysis of opportunities and challenges for retrofitting coal-fired power plants

Contact Info

Product

Resources

About

Part load operation of natural gas fired power plant with CO2 capture system for selective exhaust gas recirculation

Cited by 95 publications

References 41 publications

Experimental Investigation on the Heat Flux Distribution and Pollutant Emissions of Slot LPG/Air Premixed Impinging Flame Array

Experimental Investigation on the Heat Flux Distribution and Pollutant Emissions of Slot LPG/Air Premixed Impinging Flame Array

Integrated Energy-Saving Superstructure and Optimization of the MEA-Absorption CO2 Capture System in a Coal-Fired Power Plant

Iron as a sustainable chemical carrier of renewable energy: Analysis of opportunities and challenges for retrofitting coal-fired power plants

Contact Info

Product

Resources

About

Integrated Energy-Saving Superstructure and Optimization of the MEA-Absorption CO₂ Capture System in a Coal-Fired Power Plant