Performance of steel slag in carbonation–calcination looping for CO<sub>2</sub>capture from industrial flue gas

Tian, Sicong; Jian, Jiang; Li, Kai Min; Yan, Feng; Chen, Xuejing

doi:10.1039/c3ra47426g

Cited by 38 publications

(24 citation statements)

References 31 publications

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“…The stoichiometric CO 2 capture capacity for calcined limestone is the highest due to the presence of inert oxides in decomposed dolomite and steel slag, which leads to a higher capture capacity in the first cycle for the still relatively porous CaO derived from limestone, as presented in Figure 1 a. However, the sorbents derived from dolomite and steel slag show a higher capture capacity after just a few cycles, which indicates that CaO deactivation in these sorbents is clearly mitigated . Thus, the multicycle capture capacity of dolomite‐ and steel‐slag‐derived sorbents becomes twice that of lime after just 20 cycles (Figure 1 a).…”

Section: Multicycle Co2 Capture Behavior Of Limestone Dolomite and Smentioning

confidence: 96%

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Energy Consumption for CO₂ Capture by means of the Calcium Looping Process: A Comparative Analysis using Limestone, Dolomite, and Steel Slag

Ortíz

Chacartegui

2016

Energy Tech

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The calcium looping (CaL) process, based upon the dry carbonation/calcination of CaO/CaCO3, is at the center of a potentially low‐cost, second‐generation technology for CO2 capture. This manuscript analyzes the energy penalty that arises from the integration of the CaL process into a coal‐fired power plant using cheap and abundantly available CaO precursors such as natural limestone, dolomite, and steel slag. Experimental results on their multicycle capture capacity behavior obtained from thermogravimetric analysis (TGA) at realistic CaL conditions for CO2 capture are used to this end. This work shows that the specific energy consumption for CO2 avoided (SPECCA) is reduced by using either dolomite or steel slag, whose carbonation kinetics in the diffusive phase are accelerated as compared to limestone. Thus, the use of dolomite as CaO precursor would yield a low SPECCA value of approximately 2 MJ kg−1 CO2 for a residence time of the solids in the carbonator of approximately 10 minutes, which is clearly below the SPECCA value usually reported for conventional amine‐based CO2 capture systems.

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Section: Multicycle Co2 Capture Behavior Of Limestone Dolomite and Smentioning

confidence: 96%

“…The use of steel slag as an alternative CaO precursor in the CaL process is also gaining the attention of researchers . Steel slag is produced in large amounts by the metallurgical industry, remaining an important part as final waste without valorization.…”

Section: Multicycle Co2 Capture Behavior Of Limestone Dolomite and Smentioning

confidence: 99%

Energy Consumption for CO₂ Capture by means of the Calcium Looping Process: A Comparative Analysis using Limestone, Dolomite, and Steel Slag

Ortíz

Chacartegui

2016

Energy Tech

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“…Expectedly, only CaO derived from the calcium-based compounds in the steel slag suffers carbonation under the CaL conditions applied, whereas the rest of the compounds remain inert, as shown in previous studies. 51,52 Fig. 1b illustrates the particle size distribution of the steel slag powder used in the experiments, with a volume weighed mean diameter of 106 mm.…”

Section: Resultsmentioning

confidence: 99%

Use of steel slag for CO₂ capture under realistic calcium-looping conditions

et al. 2016

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aIn this study, CaO derived from steel slag pretreated with diluted acetic acid has been tested as a dry sorbent for CO 2 capture under realistic Ca-Looping (CaL) conditions, which necessarily implies calcination under high CO 2 partial pressure and fast transitions between carbonation and calcination stages. The multicycle capture performance of the sorbent has been investigated by varying the precalcination time, carbonation/calcination residence times and with the introduction of a recarbonation stage. Results show that the sorbent can be regenerated in very short residence times at 900 C under high CO 2 partial pressure, thus reducing the calciner temperature by about 30-50 C when compared to limestone. Although the introduction of a recarbonation stage to reactivate the sorbent, as suggested in previous studies for limestone, results in a slightly enhanced capture capacity, the sorbent performance can be significantly improved if the main role of the solid-state diffusion-controlled carbonation is not dismissed. Thus, a notable enhancement of the capture capacity is achieved when the carbonation residence time is prolonged beyond just a few minutes, which suggests a critical effect of solids residence time in the carbonator on the CO 2 capture efficiency of the CaL process when integrated into a power plant.

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“…[223][224][225][226][227] First, they studied the carbonation conversion performance of steel slag in simulated flue gas. [223][224][225][226][227] First, they studied the carbonation conversion performance of steel slag in simulated flue gas.…”

Section: Industrial Alkaline Solid Wastementioning

confidence: 99%

Solid‐Waste‐Derived Carbon Dioxide‐Capturing Materials

et al. 2019

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Solid sorbents are considered to be promising materials for carbon dioxide capture. In recent years, many studies have focused on the use of solid waste as carbon dioxide sorbents. The use of waste resources as carbon dioxide sorbents not only leads to the development of relatively low‐cost materials, but also eliminates waste simultaneously. Different types of waste materials from biomass, industrial waste, household waste, and so forth were used as carbon dioxide sorbents with sufficient carbon dioxide capture capacities. Herein, progress on the development of carbon dioxide sorbents produced from waste materials is reviewed and covers key factors, such as the type of waste, preparation method, further modification method, carbon dioxide sorption performance, and kinetics studies. In addition, a new research direction for further study is proposed. It is hoped that this critical review will not merely sum up the major research directions in this field, but also provide significant suggestions for future work.

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Performance of steel slag in carbonation–calcination looping for CO₂capture from industrial flue gas

Cited by 38 publications

References 31 publications

Energy Consumption for CO₂ Capture by means of the Calcium Looping Process: A Comparative Analysis using Limestone, Dolomite, and Steel Slag

Energy Consumption for CO₂ Capture by means of the Calcium Looping Process: A Comparative Analysis using Limestone, Dolomite, and Steel Slag

Use of steel slag for CO₂ capture under realistic calcium-looping conditions

Solid‐Waste‐Derived Carbon Dioxide‐Capturing Materials

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Performance of steel slag in carbonation–calcination looping for CO2capture from industrial flue gas

Cited by 38 publications

References 31 publications

Energy Consumption for CO2 Capture by means of the Calcium Looping Process: A Comparative Analysis using Limestone, Dolomite, and Steel Slag

Energy Consumption for CO2 Capture by means of the Calcium Looping Process: A Comparative Analysis using Limestone, Dolomite, and Steel Slag

Use of steel slag for CO2 capture under realistic calcium-looping conditions

Solid‐Waste‐Derived Carbon Dioxide‐Capturing Materials

Contact Info

Product

Resources

About

Performance of steel slag in carbonation–calcination looping for CO₂capture from industrial flue gas

Energy Consumption for CO₂ Capture by means of the Calcium Looping Process: A Comparative Analysis using Limestone, Dolomite, and Steel Slag

Energy Consumption for CO₂ Capture by means of the Calcium Looping Process: A Comparative Analysis using Limestone, Dolomite, and Steel Slag

Use of steel slag for CO₂ capture under realistic calcium-looping conditions