Simulation study on the carbon capture system applying LNG cold energy to the O 2 /H 2 O oxy-fuel combustion

Guan, Yanjin; Han, Yixiao; Wu, M.-T.; Liu, Wenbin; Cai, Lei; Yang, Yun; Xiang, Yanlei; Chen, Shaosong

doi:10.1016/j.ngib.2017.11.011

Cited by 11 publications

(4 citation statements)

References 12 publications

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“…Upon comparison with the COOLCEP system, the combustion system has much lower energy consumption. The thermal and exergy efficiencies were 6.3 % and 5.4 % higher, respectively, than the COOLCEP system [96].…”

Section: Co 2 Capturementioning

confidence: 78%

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Recent Progress in Cold Utilization of Liquefied Natural Gas

Shingan

Parthasarthy

2023

Chem Eng & Technol

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Liquefaction of natural gas occurs at –162 °C and atmospheric pressure for transporting it over long distances. In the customer's segment, the liquefied natural gas is regasified before distribution. Around 830 kJ kg−1 energy is required for the production of liquefied natural gas and is often saved as cold energy, which can be reused by regasification terminals. Hence, for the past few years, cold energy utilization has been an important topic of research in the energy sector. The different techniques to utilize cold energy for power generation, air fractionation, extraction of natural gas liquids, refrigeration systems, desalination, and dry ice manufacturing are reviewed and discussed. Applying the cold utilization of LNG technique in these systems can help to improve efficiency and decrease operating costs effectively.

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Section: Co 2 Capturementioning

confidence: 78%

“…The carbon capture system using CULNG to O 2 /H 2 O combustion was developed by Yenwen et al [96]. A mathematical model was formulated for this system to calculate thermal and exergy efficiency.…”

Section: Co 2 Capturementioning

confidence: 99%

Recent Progress in Cold Utilization of Liquefied Natural Gas

Shingan

Parthasarthy

2023

Chem Eng & Technol

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“…Currently, free allocation is mainly used in China. The stepped carbon trading mechanism mainly consists of three parts: initial carbon emission quotas, actual carbon emissions, and carbon trading costs (Guan et al, 2018;Chrispim, 2021;Liang et al, 2021).…”

Section: Stepped Carbon Trading Modelsmentioning

confidence: 99%

Low-carbon optimal operation of the integrated energy system considering integrated demand response and oxygen-rich combustion capture technology

Ji,

Li,

et al. 2024

Front. Energy Res.

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In view of the current operating constraints and environmental pollution problems of traditional units, in this article, oxygen-rich combustion capture technology is introduced to transform gas-fired units, demand response technology is used on the load side, the energy conversion equipment such as power-to-gas equipment is combined to form an integrated energy system, and then, a low-carbon optimization approach of the integrated energy system is proposed. First, the system architecture is constructed, and a model with an oxygen-rich combustion unit and integrated demand response is established. Second, a power-to-gas equipment model considering reaction waste heat utilization and oxygen recovery is established. Finally, a stepped carbon trading mechanism is introduced to establish a low-carbon economic scheduling model for the integrated energy system with the goal of minimizing the operating cost of the integrated energy system. The simulation results show that the total cost and carbon emissions of the integrated energy system are reduced by 6.44% and 44.24%, respectively, under this model. At the same time, the operation adjustment capability and the oxygen production efficiency of the internal units of the system are improved.

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“…In addition, thermodynamic analysis of oxy-combustion power cycles have been made in many studies [4][5][6][7], and suggestions have been presented for making cycles more efficient using various modifications [8,9]. Studies have been presented on the different conditions and parameters regarding the combustion characteristics of oxy-combustion based systems [10][11][12][13]. In addition, detailed energy and cost calculations have been made on cycle components such as air separation units (ASUs), combustion chambers, and carbon capture and storage systems [14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Energy, economic and environmental analysis and comparison of the novel Oxy- combustion power systems

Ozsari

Üst

2022

Journal of Thermal Engineering

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Oxy-combustion technologies are clean energy systems with zero emission; they have great potential when considering global warming and climate change. This study presents a detailed thermodynamic analysis in terms of energy, environment, and economy. Consequently, the results obtained for an oxy-combustion power system are presented in comparison with a conventional gas turbine power system. The results are presented as a function of the pressure ratio with regard to net power, input heat, system efficiency, sp ecific fue l consumption, equivalence ratio, fuel-air ratio, capital investment cost, fuel cost, oxygen cost, total cost, electricity revenue, and net profit. In addition, the study calculates the pollutant emissions from non-oxy-combustion systems and investigates the environmental costs. The pressure ratio for maximum net power has been obtained as 20.8 in the conventional gas turbine power system. Similarly, the pressure ratios for maximum net power in oxy-combustion power cycles with 26%, 28%, and 30% oxygen ratios are 23.3, 27.4 and 29.7, respectively. Results from 24% to 30% have been displayed to observe the effect of reactant oxygen in the oxy-combustion power cycles. The optimum c ycle c onditions have been determined by calculating the costs of system components, total revenues, and net profits at pressure ratios of 10, 20, 30 and 40. Finally, the results reveal the pressure ratio should be reduced to minimize the total costs per cycle. For maximum net profit, the pressure ratio in a conventional gas turbine power cycle has been calculated as 15.9; similarly, the pressure ratios in oxy-combustion power cycles with 26%, 28%, and 30% oxygen ratios have been respectively calculated as 12.8, 15.2 and 16.4.

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Simulation study on the carbon capture system applying LNG cold energy to the O 2 /H 2 O oxy-fuel combustion

Cited by 11 publications

References 12 publications

Recent Progress in Cold Utilization of Liquefied Natural Gas

Recent Progress in Cold Utilization of Liquefied Natural Gas

Low-carbon optimal operation of the integrated energy system considering integrated demand response and oxygen-rich combustion capture technology

Energy, economic and environmental analysis and comparison of the novel Oxy- combustion power systems

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