Life cycle assessment of amine-based versus ammonia-based post combustion CO2 capture in coal-fired power plants

Matin, Naser Seyed; Flanagan, William P.

doi:10.1016/j.ijggc.2021.103535

Cited by 32 publications

(9 citation statements)

References 56 publications

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“…This stream is used to reduce the flame temperature and compensate for the volume of missing N 2 to ensure that there is an acceptable amount of gas to carry the heat through the combustion process . Life cycle assessment (LCA) is defined as a technique to quantify the potential environmental impacts of product, materials, process, or other measurable activities over its entire life cycle. − The LCA of the oxyfuel combustion power plant with CO 2 capture presented by Stanger et al analyzed the current technologies on the development of oxyfuel combustion for different kinds of coal-fired and gas turbine-based power plants. Retrofitting of a coal-fired power plant (CFPP) by a polymeric membrane and cryogenic distillation hybridization for different oxycombustion pathways were evaluated by Garcia et al They reported that the polymeric membrane system is more efficient than cryogenic distillation regarding power consumption of the former in comparison to that of the latter.…”

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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Section: Introductionmentioning

confidence: 99%

Oxyfuel Combustion Makes Carbon Capture More Efficient

Talei,

Fozer,

Varbanov

et al. 2024

ACS Omega

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“…1,2 Significant amounts of sulfur-containing organic compounds, such as mercaptans, dibenzothiophene (DBT), and its derivatives (Th, BT), are undesirable due to their foul odors and impressive corrosive properties. 3 Hereupon, numerous corrective methods for fuel desulfurization have been introduced and adopted in recent years for clean energy generation and environmental protection. 4,5 Nowadays, HDS (hydrodesulfurization) is the conventional industrial method for desulfurization, which removes sulfur from thiols, hydrogen sulfides, disulfides, and mercaptans.…”

Section: Introductionmentioning

confidence: 99%

“…Ultra‐deep removal of sulfur from gasoline has been a challenging issue and plays a vital economic role in the worldwide petroleum refining industry 1,2 . Significant amounts of sulfur‐containing organic compounds, such as mercaptans, dibenzothiophene (DBT), and its derivatives (Th, BT), are undesirable due to their foul odors and impressive corrosive properties 3 . Hereupon, numerous corrective methods for fuel desulfurization have been introduced and adopted in recent years for clean energy generation and environmental protection 4,5 .…”

Section: Introductionmentioning

confidence: 99%

Highly oxidative desulfurization of thiophenic model fuels and real gasoline by Keggin‐type heteropolyanion immobilized on polyaniline and chitosan as an efficient organic–inorganic nanohybrid catalyst

Rezvani

Ardeshiri

Ghafuri

et al. 2023

J of Applied Polymer Sci

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To obtain clean gasoline, a new nanohybrid catalyst (TPA@PAN@CH) was synthesized by immobilizing tungstophosphoric acid (TPA) on the surface of polyaniline (PAN) and chitosan (CH) polymers. The features of the materials were detected by FT-IR, UV/vis, XRD, FE-SEM, and EDX methods. The XRD patterns demonstrate that the average crystallite size of the TPA@PAN@CH is estimated to be approximately 45 nm, which corresponds to the results of the FE-SEM.The catalytic performance of the TPA@PAN@CH was tested in the nanocatalytic oxidative desulfurization (Ncat-ODS) of gasoline and model fuels by H 2 O 2 /AcOH (volume proportion of 2:1) oxidizing agent. The best desulfurization outcomes were achieved by 0.1 g of the TPA@PAN@CH as a nanocatalyst at 35 C under mild reaction conditions. Based upon the above findings, the sulfur content could be declined from 0.4986 to 0.0193 wt%, which corresponds to performance of 96%. Mercaptan concentration decreased from 98 to 4 ppm, and the removal efficiency of model fuels declined in the order of DBT ≥ BT > Th.The high catalytic activity of TPA@PAN@CH was maintained for five cycles without significantly diminishing its performance. This work suggested the potential application of the TPA@PAN@CH for eliminating of hazardous sulfur compounds that significantly affect the efficacy of the Ncat-ODS.

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“…Recent publications have performed a life-cycle assessment of CO 2 capture from flue gasses from coal power plants where traditional methods could be modified and retrofitted for volatile organics capture. (45,46) Keeping this in mind, we propose that future work could aim to capture and recondense the highly volatile solvents that are evaporated during the electrospinning process thus making it a more environmentally friendly process and sustainable material cycle.…”

Section: Introductionmentioning

confidence: 99%