Cold energy utilization of liquefied natural gas for capturing carbon dioxide in the flue gas from the magnesite processing industry

Zhao, Liang; Dong, Hua; Tang, Jiajun; Cai, Jiuju

doi:10.1016/j.energy.2015.08.110

Cited by 77 publications

(24 citation statements)

References 33 publications

(39 reference statements)

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“…CO 2 was imported from a post-combustion facility. CO 2 hydrogenation into methanol was studied in [10], where the CO 2 stream was imported from a CO 2 capturing facility of a magnesite plant and hydrogen was produced from solarpowered water electrolyzers.…”

Section: Introductionmentioning

confidence: 99%

Optimal Design Issues of a Methanol Synthesis Reactor from CO₂ Hydrogenation

Rafiee

2020

Chem Eng & Technol

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Methanol production through CO2 hydrogenation was investigated in a series of fixed‐bed reactors. Staging of the reactor into several smaller reactors is considered to enhance methanol production, in addition to maximizing a measure of annual profit. The degrees of freedom of the reactor system are the number of stages, the cooling medium temperature, the heat transfer area, and the volume of the stages. Depending on the objective function (OF) criteria, staging of the reactor increases the OF values to various extents. When the objective is to maximize the methanol production, the OF of a three‐stage reactor system with an inlet H2/CO2 ratio of 2 is 2.61 % higher than in the single‐stage configuration. Staging of the reactor also increases the synthesis gas conversion to methanol. However, if maximizing the annual profit is the objective, the profitability of the two‐stage configuration is 2.05 % greater than in the case with one reactor, due to the higher methanol production of the staged reaction system.

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Section: Introductionmentioning

confidence: 99%

Optimal Design Issues of a Methanol Synthesis Reactor from CO₂ Hydrogenation

Rafiee

2020

Chem Eng & Technol

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“…D 3 and D 5 were outside the range of the denoted fractal theory, therefore these dimensions are meaningless in this section. However, fractal dimension D 4 , which corresponds to intra-particle filling and can describe the mesopore and macropore matrix surface features, was between 2 and 3 for all samples, and thus D 4 can be used to determine the characteristics of the seepage pores [45]. The value of D 4 for the original coal sample ranged from 2.84 to 2.89 (avg.…”

Section: Fractal Features Of Seepage Pores Between the Initial And Lqmentioning

confidence: 99%

“…The fractal dimensions D 3 , D 4 , and D 5 were calculated from the three parts that were divided by the relationships between the ln(dV/dP) and ln(P) for the three coal samples, based on Equation (3). Previous studies demonstrated that D 3 , D 4 , and D 5 were related to coal particle shape, internal seepage pore structure, and coal matrix compressibility [15,45], respectively. The values of the three fractal dimensions for all coal samples are listed in Table 5.…”

Section: Fractal Features Of Seepage Pores Between the Initial And Lqmentioning

confidence: 99%

“…In recent decades, the relationship between resource utilization and environmental protection has become increasingly tense [3,4]. Coal resource development has generated massive amounts of CO 2 , CH 4 , and other pollutant gases, which threaten the safety of workers and have exacerbated the greenhouse effect [5,6]. Coal-bed methane (CBM), a potential natural gas resource, is abundant in Chinese coal seams.…”

Section: Introductionmentioning

confidence: 99%

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Damage Effects and Fractal Characteristics of Coal Pore Structure during Liquid CO2 Injection into a Coal Bed for E-CBM

Wei

et al. 2018

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Pore structure has a significant influence on coal-bed methane (CBM) enhancement. Injecting liquid CO 2 into coal seams is an effective way to increase CBM recovery. However, there has been insufficient research regarding the damage effects and fractal characteristics of pore structure at low temperature induced by injecting liquid CO 2 into coal samples. Therefore, the methods of low-pressure nitrogen adsorption-desorption (LP-N 2 -Ad) and mercury intrusion porosimetry (MIP) were used to investigate the damage effects and fractal characteristics of pore structure with full aperture as the specimens were frozen by liquid CO 2 . The adsorption isotherms revealed that the tested coal samples belonged to type B, indicating that they contained many bottle and narrow-slit shaped pores. The average pore diameter (APD; average growth rate of 18.20%), specific surface area (SSA; average growth rate of 7.38%), and total pore volume (TPV; average growth rate of 18.26%) increased after the specimens were infiltrated by liquid CO 2 , which indicated the generation of new pores and the transformation of original pores. Fractal dimensions D 1 (average of 2.58) and D 2 (average of 2.90) of treated coal samples were both larger the raw coal (D 1 , average of 2.55 and D 2 , average of 2.87), which indicated that the treated specimens had more rough pore surfaces and complex internal pore structures than the raw coal samples. The seepage capacity was increased because D 4 (average of 2.91) of the treated specimens was also higher than the raw specimens (D 4 , average of 2.86). The grey relational coefficient between the fractal dimension and pore structure parameters demonstrated that the SSA, APD, and porosity positively influenced the fractal features of the coal samples, whereas the TPV and permeability exerted negative influences.

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“…However, for physical solvents, the costs are lower because they are regenerated by pressure reduction instead of using heat. Physical solvents are most suitable for use at high operating pressure and low temperatures, and it is more efficient when the CO 2 streams in the power plants are more concentrated [66][67][68][69][70]. In the context of CO 2 capture from the South African coal-fired power plants, the pre-combustion technology cannot be fully implemented because it has a high energy requirement with no option of retrofitting capture devices into existing power plants.…”

Section: Pre-combustionmentioning

confidence: 99%

The Potential of CO2 Capture and Storage Technology in South Africa’s Coal-Fired Thermal Power Plants

Yoro

Sekoai

2016

Environments

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Abstract:The global atmospheric concentration of anthropogenic gases, such as carbon dioxide, has increased substantially over the past few decades due to the high level of industrialization and urbanization that is occurring in developing countries, like South Africa. This has escalated the challenges of global warming. In South Africa, carbon capture and storage (CCS) from coal-fired power plants is attracting increasing attention as an alternative approach towards the mitigation of carbon dioxide emission. Therefore, innovative strategies and process optimization of CCS systems is essential in order to improve the process efficiency of this technology in South Africa. This review assesses the potential of CCS as an alternative approach to reducing the amount CO 2 emitted from the South African coal-fired power plants. It examines the various CCS processes that could be used for capturing the emitted CO 2 . Finally, it proposes the use of new adsorbents that could be incorporated towards the improvement of CCS technology.

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Cold energy utilization of liquefied natural gas for capturing carbon dioxide in the flue gas from the magnesite processing industry

Cited by 77 publications

References 33 publications

Optimal Design Issues of a Methanol Synthesis Reactor from CO₂ Hydrogenation

Optimal Design Issues of a Methanol Synthesis Reactor from CO₂ Hydrogenation

Damage Effects and Fractal Characteristics of Coal Pore Structure during Liquid CO2 Injection into a Coal Bed for E-CBM

The Potential of CO2 Capture and Storage Technology in South Africa’s Coal-Fired Thermal Power Plants

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Cold energy utilization of liquefied natural gas for capturing carbon dioxide in the flue gas from the magnesite processing industry

Cited by 77 publications

References 33 publications

Optimal Design Issues of a Methanol Synthesis Reactor from CO2 Hydrogenation

Optimal Design Issues of a Methanol Synthesis Reactor from CO2 Hydrogenation

Damage Effects and Fractal Characteristics of Coal Pore Structure during Liquid CO2 Injection into a Coal Bed for E-CBM

The Potential of CO2 Capture and Storage Technology in South Africa’s Coal-Fired Thermal Power Plants

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Optimal Design Issues of a Methanol Synthesis Reactor from CO₂ Hydrogenation

Optimal Design Issues of a Methanol Synthesis Reactor from CO₂ Hydrogenation