Emission and control of flue gas pollutants in CO2 chemical absorption system – A review

Fang, Mengxiang; Yi, Ningtong; Di, Wentao; Wang, Tao; Wang, Qinhui

doi:10.1016/j.ijggc.2019.102904

Cited by 89 publications

(28 citation statements)

References 40 publications

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“…The main limitations associated with the DEEA-MAPA blend by the Norwegian University of Science and Technology (NTNU) is the high volatility of the solvent, since DEEA has a 20-30 times higher vapor pressure at absorption temperature with respect to MEA [51,53]. Therefore, non-negligible amine losses are expected to occur in the treated gas stream, which may be an environmental concern [92]. In addition, a good demixing is experienced only when the solvent concentration is high; at lower concentrations, the phase separation is expected to become negligible and more than 99% of the volume is made up by the aqueous phase [40].…”

Section: Deea-based Blendsmentioning

confidence: 99%

New Solvents for CO2 and H2S Removal from Gaseous Streams

et al. 2021

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Acid gas removal from gaseous streams such as flue gas, natural gas and biogas is mainly performed by chemical absorption with amines, but the process is highly energy intensive and can generate emissions of harmful compounds to the atmosphere. Considering the emerging interest in carbon capture, mainly associated with increasing environmental concerns, there is much current effort to develop innovative solvents able to lower the energy and environmental impact of the acid gas removal processes. To be competitive, the new blends must show a CO2 uptake capacity comparable to the one of the traditional MEA benchmark solution. In this work, a review of the state of the art of attractive solvents alternative to the traditional MEA amine blend for acid gas removal is presented. These novel solvents are classified into three main classes: biphasic blends—involving the formation of two liquid phases, water-lean solvents and green solvents. For each solvent, the peculiar features, the level of technological development and the main expected pros and cons are discussed. At the end, a summary on the most promising perspectives and on the major limitations is provided.

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Section: Deea-based Blendsmentioning

confidence: 99%

New Solvents for CO2 and H2S Removal from Gaseous Streams

et al. 2021

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“…4 Determined by the 5% weight-loss temperature from TGA. 5 Determined by the maximum temperature for fully degradation from TGA. 6 Determined by the rubbery plateau region in DMA curves.…”

Section: Synthesis Of Co2-immobilized Platform Fcdsmentioning

confidence: 99%

“…Due to global warming and environmental pollution, research on the use of carbon dioxide (CO 2 ) is broadly conducted alongside efforts to reduce carbon emissions via CO 2 capture and storage [1][2][3][4][5]. This relatively inert gas can be efficiently converted into polymerizable platforms (monomers) and polymers, as well as many commodity chemicals such as methanol, carboxylic acid, and dimethyl carbonate [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Self-Healable and Recyclable Biomass-Derived Polyurethane Networks through Carbon Dioxide Immobilization

et al. 2021

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Due to growing environmental issues, research on carbon dioxide (CO2) use is widely conducted and efforts are being made to produce useful materials from biomass-derived resources. However, polymer materials developed by a combined strategy (i.e., both CO2-immobilized and biomass-derived) are rare. In this study, we synthesized biomass-derived poly(carbonate-co-urethane) (PCU) networks using CO2-immobilized furan carbonate diols (FCDs) via an ecofriendly method. The synthesis of FCDs was performed by directly introducing CO2 into a biomass-derived 2,5-bis(hydroxymethyl)furan. Using mechanochemical synthesis (ball-milling), the PCU networks were effortlessly prepared from FCDs, erythritol, and diisocyanate, which were then hot-pressed into films. The thermal and thermomechanical properties of the PCU networks were thoroughly characterized by thermogravimetric analysis, differential scanning calorimetry, dynamic (thermal) mechanical analysis, and using a rheometer. The self-healing and recyclable properties of the PCU films were successfully demonstrated using dynamic covalent bonds. Interestingly, transcarbamoylation (urethane exchange) occurred preferentially as opposed to transcarbonation (carbonate exchange). We believe our approach presents an efficient means for producing sustainable polyurethane copolymers using biomass-derived and CO2-immobilized diols.

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“…The selected industrial applications are power generation, iron and steel production, cement production, as well as producing chemicals which can also be used as decarbonized energy carriers (e.g., hydrogen). The chemical absorption (scrubbing) method [8] and the innovative chemical/calcium looping cycles based on reactive adsorption systems [9] were evaluated as decarbonization technologies. Apart from the carbon footprint reduction, the overall energy conversion yields, as well as other techno-economic and environmental performance indicators, represent important elements in the present evaluations.…”

Section: Introductionmentioning

confidence: 99%

Techno-Economic and Environmental Evaluations of Decarbonized Fossil-Intensive Industrial Processes by Reactive Absorption & Adsorption CO2 Capture Systems

et al. 2020

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Decarbonization of energy-intensive systems (e.g., heat and power generation, iron, and steel production, petrochemical processes, cement production, etc.) is an important task for the development of a low carbon economy. In this respect, carbon capture technologies will play an important role in the decarbonization of fossil-based industrial processes. The most significant techno-economic and environmental performance indicators of various fossil-based industrial applications decarbonized by two reactive gas-liquid (chemical scrubbing) and gas-solid CO2 capture systems are calculated, compared, and discussed in the present work. As decarbonization technologies, the gas-liquid chemical absorption and more innovative calcium looping systems were employed. The integrated assessment uses various elements, e.g., conceptual design of decarbonized plants, computer-aided tools for process design and integration, evaluation of main plant performance indexes based on industrial and simulation results, etc. The overall decarbonization rate for various assessed applications (e.g., power generation, steel, and cement production, chemicals) was set to 90% in line with the current state of the art in the field. Similar non-carbon capture plants are also assessed to quantify the various penalties imposed by decarbonization (e.g., increasing energy consumption, reducing efficiency, economic impact, etc.). The integrated evaluations exhibit that the integration of decarbonization technologies (especially chemical looping systems) into key energy-intensive industrial processes have significant advantages for cutting the carbon footprint (60–90% specific CO2 emission reduction), improving the energy conversion yields and reducing CO2 capture penalties.

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Emission and control of flue gas pollutants in CO2 chemical absorption system – A review

Cited by 89 publications

References 40 publications

New Solvents for CO2 and H2S Removal from Gaseous Streams

New Solvents for CO2 and H2S Removal from Gaseous Streams

Self-Healable and Recyclable Biomass-Derived Polyurethane Networks through Carbon Dioxide Immobilization

Techno-Economic and Environmental Evaluations of Decarbonized Fossil-Intensive Industrial Processes by Reactive Absorption & Adsorption CO2 Capture Systems

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