CCU Technologies in the Green Economy

Majchrzak‐Kucęba, Izabela; Environment, Czestochowa; Szymanek, P.

doi:10.17512/ios.2018.3.5

Cited by 4 publications

(5 citation statements)

References 8 publications

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“…The extensive concentration of carbon dioxide in the atmosphere is a threat to environmental safety, contributing to the greenhouse effect, but CO 2 is a source of carbon for plants and can also be used as a reactant in chemical reactions [1][2][3]. This concept has led to the development of Carbon Capture and Utilization (CCU) technologies, which are perceived as a more justified and socially acceptable technology for CO 2 management than Carbon Capture and Storage (CCS).…”

Section: Introductionmentioning

confidence: 99%

“…Converting CO 2 into DME requires an energy input in the form of hydrogen, as shown in Equations ( 1)- (9). In order to meet the goal of reducing carbon emissions, green hydrogen is needed [1,5,26,27].…”

Section: Introductionmentioning

confidence: 99%

“…12 t/d). The process is based on the conversion of CO 2 from geothermal sources with the hydrogen produced by water electrolysis using geothermal energy [1,36,38]. The methanol produced in this facility is used in a number of applications, including blending with gasoline, biodiesel production, and wastewater denitrification.…”

Section: Introductionmentioning

confidence: 99%

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Exergetic Analysis of DME Synthesis from CO2 and Renewable Hydrogen

et al. 2022

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Carbon Capture and Utilization (CCU) is a viable solution to valorise the CO2 captured from industrial plants’ flue gas, thus avoiding emitting it and synthesizing products with high added value. On the other hand, using CO2 as a reactant in chemical processes is a challenging task, and a rigorous analysis of the performance is needed to evaluate the real impact of CCU technologies in terms of efficiency and environmental footprint. In this paper, the energetic performance of a DME and methanol synthesis process fed by 25% of the CO2 captured from a natural gas combined cycle (NGCC) power plant and by the green hydrogen produced through an electrolyser was evaluated. The remaining 75% of the CO2 was compressed and stored underground. The process was assessed by means of an exergetic analysis and compared to post-combustion Carbon Capture and Storage (CCS), where 100% of the CO2 captured was stored underground. Through the exergy analysis, the quality degradation of energy was quantified, and the sources of irreversibility were detected. The carbon-emitting source was a 189 MW Brayton–Joule power plant, which was mainly responsible for exergy destruction. The CCU configuration showed a higher exergy efficiency than the CCS, but higher exergy destruction per non-emitted carbon dioxide. In the DME/methanol production plant, the main contribution to exergy destruction was given by the distillation column separating the reactor outlet stream and, in particular, the top-stage condenser was found to be the component with the highest irreversibility (45% of the total). Additionally, the methanol/DME synthesis reactor destroyed a significant amount of exergy (24%). Globally, DME/methanol synthesis from CO2 and green hydrogen is feasible from an exergetic point of view, with 2.276 MJ of energy gained per 1 MJ of exergy destroyed.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Exergetic Analysis of DME Synthesis from CO2 and Renewable Hydrogen

et al. 2022

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“…On the other hand, both transportation and storage phases are deeply site-dependent, thus requiring an extended investigation of the local and geological characteristics [18]. The main hinderance to widespread CCS, in addition to the high costs, is the low social acceptance [19]. Concerns of CO 2 being leaked from the storage sites are mainly related to both climate change issues and ecosystem damage at a local level.…”

Section: Introductionmentioning

confidence: 99%

The Environmental Impacts of Carbon Capture Utilization and Storage on the Electricity Sector: A Life Cycle Assessment Comparison between Italy and Poland

et al. 2022

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Carbon Capture Utilization and Storage (CCUS) is a set of technologies aimed at capturing carbon dioxide (CO2) emissions from point-source emitters to either store permanently or use as a feedstock to produce chemicals and fuels. In this paper, the potential benefits of CCUS integration into the energy supply sector are evaluated from a Life Cycle Assessment (LCA) perspective by comparing two different routes for the CO2 captured from a natural gas combined cycle (NGCC). Both the complete storage of the captured CO2 and its partial utilization to produce dimethyl ether are investigated. Moreover, the assessment is performed considering the region-specific features of two of the largest CO2 emitters in Europe, namely Italy and Poland. Results shows that the complete storage of the captured CO2 reduces Global Warming Potential (GWP) by ~89% in Italy and ~97%, in Poland. On the other hand, the partial utilization of CO2 to produce dimethyl ether leads to a decrease of ~58% in Italy and ~68% in Poland with respect to a comparable reference entailing conventional dimethyl ether production. A series of environmental trade-offs was determined, with all the investigated categories apart from GWP showing an increase, mainly connected with the higher energy requirements of CCUS processes. These outcomes highlight the need for a holistic-oriented approach in the design of novel implemented configurations to avoid burden shifts throughout the value chain.

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“…1–11 Interest in carbon capture and utilization (CCU) technology, which facilitates the conversion of CO 2 to useful chemicals such as salicylic acid, methanol, and formic acid (HCO 2 H) and thereby effectively reduces CO 2 emissions, is increasing. 6,8–10,12–30 However, the amount of CO 2 reduction that can be achieved with the CO 2 conversion technology being studied is significantly lower than the one of the current CO 2 emission unfortunately, which poses a limitation in using it as a method of mitigating global warming. 2,6,15,18,20,31 Accordingly, it is necessary to discover new chemical products that can be produced either by new CCU processes or by diversification of existing CCU technologies.…”

Section: Introductionmentioning

confidence: 99%

Eco-friendly and techno-economic conversion of CO₂into calcium formate, a valuable resource

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et al. 2022

Green Chem.

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CCU Technologies in the Green Economy

Cited by 4 publications

References 8 publications

Exergetic Analysis of DME Synthesis from CO2 and Renewable Hydrogen

Exergetic Analysis of DME Synthesis from CO2 and Renewable Hydrogen

The Environmental Impacts of Carbon Capture Utilization and Storage on the Electricity Sector: A Life Cycle Assessment Comparison between Italy and Poland

Eco-friendly and techno-economic conversion of CO₂into calcium formate, a valuable resource

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CCU Technologies in the Green Economy

Cited by 4 publications

References 8 publications

Exergetic Analysis of DME Synthesis from CO2 and Renewable Hydrogen

Exergetic Analysis of DME Synthesis from CO2 and Renewable Hydrogen

The Environmental Impacts of Carbon Capture Utilization and Storage on the Electricity Sector: A Life Cycle Assessment Comparison between Italy and Poland

Eco-friendly and techno-economic conversion of CO2into calcium formate, a valuable resource

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Eco-friendly and techno-economic conversion of CO₂into calcium formate, a valuable resource