Energy assessments of onboard CO2 capture from ship engines by MEA-based post combustion capture system with flue gas heat integration

Einbu, Aslak; Pettersen, Tanja; Morud, John; Tobiesen, Andrew; Jayarathna, Chameera; Skagestad, Ragnhild; Nysæther, G.

doi:10.1016/j.ijggc.2021.103526

Cited by 54 publications

(12 citation statements)

References 10 publications

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“…In the diesel engine; CO emission increases due to less oxygen concentration during combustion [19,20]. Also, the CO emission increases with a rich mixture [21]. After in connection with the CO 2 reduction trap, the CO emission slightly decreases.…”

Section: Resultsmentioning

confidence: 99%

Development of Active CO₂ Emission Control for Diesel Engine Exhaust Using Amine-Based Adsorption and Absorption Technique

Solomon

Natrayan

Yuvaraj³

et al. 2022

Adsorption Science & Technology

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Diesel-powered transportation is considered an efficient method of transportation; this sees the increase in the demand for the diesel engine. But diesel engines are considered to be one of the largest contributors to environmental pollution. The automobile sector accounts for the second-largest source for increasing CO2 emission globally. In this experiment, a suitable postcombustion treatment to control CO2 emission from IC engine exhaust is developed and tested. This work focuses to control CO2 emission by using the chemical adsorbent technique in diesel engine exhaust. An amine-based liquid is used to adsorb the CO2 molecules first and absorb over the amines from the diesel engine exhaust. Three types of amino solutions (L-alanine, L-aspartic acid, and L-arginine) were prepared for 0.3 mole concentrations, and the CO2 absorption investigation is performed in each solution by passing the diesel exhaust. A suitable CO2 adsorption trap is developed and tested for CO2 absorption. The experiments were performed in a single-cylinder diesel engine under variable load conditions. The eddy current dynamometer is used to apply appropriate loads on the engine based on the settings. The AVL DIGAS analyzer was used to measure the CO2, HC, and CO emissions. An uncertainty analysis is carried out on the experimental results to minimize the errors in the results. The effective CO2 reduction was achieved up to 85%, and simultaneous reduction of HC and CO was also observed.

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Section: Resultsmentioning

confidence: 99%

Development of Active CO₂ Emission Control for Diesel Engine Exhaust Using Amine-Based Adsorption and Absorption Technique

Solomon

Natrayan

Yuvaraj³

et al. 2022

Adsorption Science & Technology

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“…The fuel used by ocean-going ships is primarily heavy oil with a carbon element mass fraction of about 85% . In addition, the volume concentration of CO 2 in ship exhaust is also influenced by factors such as combustion efficiency, load rates of main and auxiliary engines, and navigation conditions .…”

Section: Methodsmentioning

confidence: 99%

Experimental Research on the Decarbonization Performance in Ocean-Going Ship Exhaust Based on the Seawater–Sodium Hydroxide Method

Qu,

Kong,

Zhou

et al. 2024

Energy Fuels

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Reducing CO 2 emissions in the international shipping industry is crucial for mitigating global warming. International Maritime Organization (IMO) has set a decarbonization target of reducing CO 2 emissions in the international shipping industry by at least 70% compared to the 2008 level by 2040. Ship-based carbon capture (SBCC) is an effective technology for reducing CO 2 emissions from ocean-going ships. The core of SBCC is efficient and low-cost absorption solutions. In this paper, based on the exhaust emission characteristics of ocean-going ships, the seawater− sodium hydroxide method for decarbonization in ocean-going ships is developed for the first time. First, the decarbonization performance of the seawater−sodium hydroxide absorption solution is investigated, including the influence of NaOH concentration, absorption solution flow rate, and CO 2 volume concentration on the decarbonization process. The results show that the seawater−sodium hydroxide absorption solution can efficiently capture CO 2 from ship exhaust. For the ship exhaust with 9 vol % CO 2 , when the absorption solution flow rate is 0.75 L/h, the decarbonization rate reaches 51.80% using the seawater−sodium hydroxide absorption solution with 1.5 mol/L NaOH. When the NaOH concentration increases to 2.5 mol/L, the decarbonization rate increases to 83.38%. Furthermore, TiO 2 nanoparticles are added to the absorption solution to investigate optimization schemes for decarbonization of the seawater−sodium hydroxide solution. The influence of nanoparticle mass concentration and size on decarbonization is studied, and the optimization parameters of the seawater−sodium hydroxide method are obtained. With 0.09 wt % of 30 nm TiO 2 in seawater−sodium hydroxide absorption solution with 1.5 mol/L NaOH, the maximum enhancement factor (E) is 1.78, achieving the maximum decarbonization rate of 92.35% for ship exhaust containing 9 vol % CO 2 . The seawater−sodium hydroxide method is a feasible and cost-effective method to reduce CO 2 emissions in ocean-going ships. The experimental results provide a valuable reference for the application of the seawater−sodium hydroxide method in ocean-going ship decarbonization and lay an important foundation for further research on SBCC technology.

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“…The use of fossil fuels is still a significant part of the energy mix, and this part is associated with high greenhouse gas emissions. , The increasing atmospheric carbon dioxide concentration as a main greenhouse gas is providing major challenges to global sustainability and environmental development, contributing to approximately three-quarters of total emissions from all industries. − The CO 2 concentration in the atmosphere is expected to increase to 550 ppm by 2050 if no action is taken. , According to the scenario that was reported by the International Energy Agency, 1 Gt CO 2 /year should be captured by 2030, ramping up to 5 Gt CO 2 /year in 2045 . Therefore, emissions from power plants and high carbon industries should be addressed in the near future .…”

Section: Introductionmentioning

confidence: 99%

Oxyfuel Combustion Makes Carbon Capture More Efficient

Talei,

Fozer,

Varbanov

et al. 2024

ACS Omega

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Fossil energy carriers cannot be totally replaced, especially if nuclear power stations are stopped and renewable energy is not available. To fulfill emission regulations, however, points such as emission sources should be addressed. Besides desulfurization, carbon capture and utilization have become increasingly important engineering activities. Oxyfuel technologies offer new options to reduce greenhouse gas emissions; however, the use of clean oxygen instead of air can be dangerous in the case of certain existing technologies. To replace the inert effect of nitrogen, carbon dioxide is mixed with oxygen gas in the case of such air combustion processes. In this work, the features of carbon capture in five different flue gases of air combustion and such oxyfuel combustion where additional carbon dioxide is mixed with clean oxygen are studied and compared. The five different flue gases originate from the gas-fired power plant, coal-fired power plant, coal-fired combined heat and power plant, the aluminum production industry, and the cement manufacturing industry. Monoethanolamine, which is an industrially preferred solvent for carbon dioxide capture from gas streams at low pressures, is selected as an absorbent, and the same amount of carbon dioxide is captured; that is, always that amount of carbon dioxide is captured, which is the result of the fossil combustion process. ASPEN Plus is used for mathematical modeling. The results show that the oxyfuel combustion cases need significantly less energy, especially at high carbon dioxide removal rates, e.g., higher than 90%, than that of the air combustion cases. The savings can even be as high as 84%. Moreover, 100% carbon capture was also be completed. This finding can be due to the fact that in the oxyfuel combustion cases, the carbon dioxide concentration is much higher than that of the air combustion cases because of the inert carbon dioxide and that higher carbon dioxide concentration results in a higher driving force for the mass transfer. The oxyfuel combustion processes also show another advantage over the air combustion processes since no nitrogen oxides are produced in the combustion process.

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Energy assessments of onboard CO2 capture from ship engines by MEA-based post combustion capture system with flue gas heat integration

Cited by 54 publications

References 10 publications

Development of Active CO₂ Emission Control for Diesel Engine Exhaust Using Amine-Based Adsorption and Absorption Technique

Development of Active CO₂ Emission Control for Diesel Engine Exhaust Using Amine-Based Adsorption and Absorption Technique

Experimental Research on the Decarbonization Performance in Ocean-Going Ship Exhaust Based on the Seawater–Sodium Hydroxide Method

Oxyfuel Combustion Makes Carbon Capture More Efficient

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Energy assessments of onboard CO2 capture from ship engines by MEA-based post combustion capture system with flue gas heat integration

Cited by 54 publications

References 10 publications

Development of Active CO2 Emission Control for Diesel Engine Exhaust Using Amine-Based Adsorption and Absorption Technique

Development of Active CO2 Emission Control for Diesel Engine Exhaust Using Amine-Based Adsorption and Absorption Technique

Experimental Research on the Decarbonization Performance in Ocean-Going Ship Exhaust Based on the Seawater–Sodium Hydroxide Method

Oxyfuel Combustion Makes Carbon Capture More Efficient

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Development of Active CO₂ Emission Control for Diesel Engine Exhaust Using Amine-Based Adsorption and Absorption Technique

Development of Active CO₂ Emission Control for Diesel Engine Exhaust Using Amine-Based Adsorption and Absorption Technique