DOI: 10.1016/j.jcou.2017.08.003
Scopus记录号: 2-s2.0-85027543952
论文题名: High performance promoter-free CO2 absorption using potassium carbonate solution in an ultrasonic irradiation system
作者: Tay W.H. ; Lau K.K. ; Shariff A.M.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2017
卷: 21 起始页码: 383
结束页码: 394
语种: 英语
英文关键词: CO2 absorption
; High frequency
; K2CO3 solvent
; Sonochemistry effect
; Ultrasonic enhancement
Scopus关键词: Air purification
; Carbon dioxide
; Carbonation
; Irradiation
; Mass transfer
; Potassium
; Solvents
; Volumetric analysis
; CO2 absorption
; Heat of absorptions
; High frequency HF
; Mass transfer process
; Potential technologies
; Regeneration energy
; Ultrasound irradiation
; Volumetric mass transfer coefficient
; Ultrasonic testing
英文摘要: CO2 capture for power plant and natural gas purification using absorption process suffers two major drawbacks: large absorption body and high regeneration energy. The high energy penalty of absorption technology can be addressed using low heat of absorption solvent. However, the challenge of using low heat of absorption solvent is to develop a practical approach to intensify absorption rate. In recent years, high frequency ultrasonic system emerges as a potential technology for mass transfer process. In this study, the potential of using high frequency ultrasonic system have been investigated using the slow kinetic solvent: (potassium carbonate) without utilizing any chemical promoter. The ultrasonic-assisted absorption system with 20 wt% potassium carbonate (without promoter) has provides 1.75 times higher volumetric mass transfer coefficient than the Piperazine (PZ) promoted potassium carbonate using stirring method. The absorption rate has been increased up to 32 times as compared to the case without ultrasonic irradiation. Besides, the required absorption time to achieve 0.9 loading (CO2 mole/K2CO3 mole) has been significantly reduced to approximate 400 s. Furthermore, an ultrasonic-assisted absorption model has been developed by including the atomization, ultrasonic streaming, and ultrasonic chemical effect in order to investigate the mechanism involved in high frequency ultrasonic-assisted absorption. Based on the model validation study, the ultrasonic chemical effect is essential to be considered in order to match the simulated and the experimental results. The results of current study prove that, high frequency ultrasonic system possesses high potential to be utilized to enhance the absorption using promoter-free potassium carbonate. © 2017 Elsevier Ltd. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52647
Appears in Collections: 影响、适应和脆弱性
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Recommended Citation:
Tay W.H.,Lau K.K.,Shariff A.M.. High performance promoter-free CO2 absorption using potassium carbonate solution in an ultrasonic irradiation system[J]. Journal of CO2 Utilization,2017-01-01,21