Integrated absorption-mineralisation for low-energy CO2 capture and sequestration

Ji, Long; Yu, Hai; Li, Kangkang; Yu, Bing; Grigore, Mihaela; Yang, Qi; Wang, Xiaolong; Chen, Zuliang; Zeng, Ming; Zhao, Shuaifei

doi:10.1016/j.apenergy.2018.04.108

Cited by 99 publications

(71 citation statements)

References 50 publications

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“…In experiments in which 200 mL of biomass ash slurry with 10 g L –1 ash dosage is saturated by pure CO 2 under the ambient condition, CE values can even reach about to 97.12%, 80.33%, 65.29%, and 72.29% for corn‐stalk ash, wheat‐stalk ash, cotton‐branch ash, and poplar ash, respectively . Compared with the direct carbonation route, integrated absorption–mineralization can also increase the CE from 63.17% to 85.7% . Moreover, particle size and ash aging also have a significant influence on the CE value, in which the smaller particle size leads to a higher CO 2 sequestration capacity mainly due to its larger surface area …”

Section: Introductionmentioning

confidence: 99%

Renewable absorbents for CO₂ capture: from biomass to nature

Shi

Liang

et al. 2019

Greenhouse Gases

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The chemical absorption process for carbon dioxide (CO2) capture is a promising method to reduce greenhouse gas emissions in the energy industry. Worldwide applications of the CO2 chemical absorption process will consume plenty of chemical absorbents and have hazardous impacts on the environment. The development of renewable absorbents from biomass can not only fill the gap of absorbent production, but also provide a novel green approach to recycle the used absorbents into nature without additional pollution. In this review, we summarized several renewable absorbents available from biomass such as biomass ash slurries, alkanolamines, aqueous ammonia, and amino acid salts. The preparations, CO2 absorption capacities, advanced treatments, and applications of the renewable absorbents were also reviewed. Moreover, the advantages and challenges in the preparation of the renewable absorbents were discussed, as well as their CO2 absorption performance improvement. Finally, future research avenues into degradation and utilization of renewable absorbents in nature were suggested. © 2019 Society of Chemical Industry and John Wiley & Sons, Ltd.

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Section: Introductionmentioning

confidence: 99%

Renewable absorbents for CO₂ capture: from biomass to nature

Shi

Liang

et al. 2019

Greenhouse Gases

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“…According to the capture process at different stages, there are generally three main methods to capture CO 2 —pre‐combustion, oxy‐fuel combustion, and post‐combustion. Many authors have summarized the inherent advantages and disadvantages of the three pathways . It is believed that pre‐combustion capture is applicable to gasification plants and oxy‐fuel combustion can be applied to new‐build power plants.…”

Section: Introductionmentioning

confidence: 99%

“…In China, 6000 million tons of fly ash from coal combustion of products is generated every year. Less than one third of this fly ash is recycled for productive purposes . Despite the numerous environmental issues, coal will remain a major source of electric power for years to come, owing to the relative lack of suitable alternatives to coal as an energy source.…”

Section: Introductionmentioning

confidence: 99%

“…Carbide slag is a kind of industrial waste mainly discharged from the polyvinyl chloride industry. It is estimated that around 56 million tons of carbide slag is produced annually in the world, of which China's production accounts for one third . With the novel mineral carbonation technology developed in this work, the emissions of CO 2 were controlled at a local point‐source with the use of coal combustion fly ash and carbide slag as feedstock.…”

Section: Introductionmentioning

confidence: 99%

“…Ji et al . developed a multiple‐cycle direct aqueous mineralisation process . The carbonation efficiency varies from 10% to 80% with additives such as Na 2 CO 3 , NaHCO 3 and NaCl .…”

Section: Introductionmentioning

confidence: 99%

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CO₂ capture and mineralization using carbide slag doped fly ash

Liu

Wang

Gao³

2019

Greenhouse Gases

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A novel direct gas–solid mineral carbonation process using carbide slag doped fly ash to capture and mineralize CO2 from flue gas was developed to overcome the barriers of long reaction time and large reactor size from aqueous processes. A laboratory‐scale fixed bed reactor with a thermogravimetric analyser and a pilot‐scale circulating entrained‐flow bed (CEB) rector system were constructed to investigate the intensification method and reaction parameters. The carbonation efficiency (ζCa [%]) was improved four times by carbide slag doped fly ash in a semi‐dry atmosphere; thus, the active calcium hydroxide from carbide slag and fly ash can react with CO2 in a thin liquid film through an ionic reaction route. The key reaction parameters, such as temperature, steam addition and water injection, were studied to promote Ca(OH)2 formation and to facilitate CO2 diffusion. As a result of the pilot‐scale experiment, carbonation efficiency achieved a maximum value of 55% with 15% steam addition in the feed and 6 kg h–1 water injection into CEB at 550 °C. © 2019 Society of Chemical Industry and John Wiley & Sons, Ltd.

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Gas and slurry flow behaviors in a CO₂‐mineralization spray tower reactor

Liu,

Wang,

Zhou

et al. 2023

AIChE Journal

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The spray tower reactors have provided an important solution for the scale‐up of mineralization processes with industrial solid waste to absorb CO2. In this study, numerical simulations were employed to investigate the fluid flow behaviors in a mineralization spray tower reactor (MSTR), and the average relative error of simulation and experimental results was 7.5%. The results showed that at a high liquid–gas ratio (L/G > 100 L/m3), the fluid flow behavior was dominated by the slurry flow, which was only hindered by the gas flow to a certain extent at the gas inlet. Further analysis revealed that the accumulation of slurry at the center and wall of the reactor, as well as the bias flow of flue gas, were the main reasons for the insufficient gas–liquid contact, which led to a lower CO2 absorption efficiency. The relationship between fluid flow behavior and CO2 absorption efficiency could improve the understanding of the MSTRs.

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Integrated absorption-mineralisation for low-energy CO2 capture and sequestration

Cited by 99 publications

References 50 publications

Renewable absorbents for CO₂ capture: from biomass to nature

Renewable absorbents for CO₂ capture: from biomass to nature

CO₂ capture and mineralization using carbide slag doped fly ash

Gas and slurry flow behaviors in a CO₂‐mineralization spray tower reactor

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Integrated absorption-mineralisation for low-energy CO2 capture and sequestration

Cited by 99 publications

References 50 publications

Renewable absorbents for CO2 capture: from biomass to nature

Renewable absorbents for CO2 capture: from biomass to nature

CO2 capture and mineralization using carbide slag doped fly ash

Gas and slurry flow behaviors in a CO2‐mineralization spray tower reactor

Contact Info

Product

Resources

About

Renewable absorbents for CO₂ capture: from biomass to nature

Renewable absorbents for CO₂ capture: from biomass to nature

CO₂ capture and mineralization using carbide slag doped fly ash

Gas and slurry flow behaviors in a CO₂‐mineralization spray tower reactor