Enhancement of Absorption of Injected Gas in New Type Mechanical Stirring Injection Refine Equipment

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The bubble disintegration is of great scientific importance in metal refining, In order for further improvement, Research on bubble disintegration and dispersion becomes necessary, The intensification of bubble disintegration experiment that we have done in cold water model by study absorption rate ,The purpose is to research bubble disintegration under difference experimental condition . In this paper, we use mass transfer coefficients stand for absorption rate, we also study utilization rate, we want to research the best experimental condition which can enhance mass transfer coefficients and utilization rate. On the basis of experimental result, Provided a scientific and experimental basis to high-temperature experiment of bubble dispersion and disintegration .Experimental results show:the rate of absorption of CO2 injected in aqueous NaOH solution can be increased greatly by mechanical stirring when the positive-reverse rotation mode is adopted. Dispersion of small bubbles in the liquid is very effective for increasing the absorption rate.

Info:

Periodical:

Advanced Materials Research (Volumes 455-456)

Edited by:

Khine Soe Thaung

Pages:

97-102

Citation:

T. A. Zhang et al., "Enhancement of Absorption of Injected Gas in New Type Mechanical Stirring Injection Refine Equipment", Advanced Materials Research, Vols. 455-456, pp. 97-102, 2012

Online since:

January 2012

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$38.00

[1] K Rajamani, E Jury, Gas holdup in bubble column reactors operating in the churn-turbulent flow regime, AIChE Journal, vol. 42, no. 9, pp.2627-2634, (1996).

DOI: https://doi.org/10.1002/aic.690420923

[2] S D Gharat, J B Joshi , Transport phenomena in bubble column reactors I: flow pattern, Chemical Engineering Journal, no. 48, pp.141-151, (1992).

DOI: https://doi.org/10.1016/0300-9467(92)80030-e

[3] P V Danckwerts, Significance of liquid-film coefficients in gas absorption, Industry & Engineering Chemistry, vol. 43, no. 6, pp.1460-1467, (1951).

[4] Liu Y, Zhang T A, Masamichi Sano, He J CH, et al, Enhancement of Absorption of Injected Gas , ISIJ Meeting, Japan, September, 2007, 20(4): 49.

[5] Liu Y, Zhang T A, Masamichi Sano, He J CH, et al, Eccentric Mechanical Stirring for Bubble Disintegration, ISIJ Meeting, Japan, April, 2008, 21(1): 7.

[6] Liu Y, Zhang T A, Masamichi Sano, He J CH, et al, Perforated Blade Impeller for Bubble Disintegration and Dispersion, ISIJ Meeting, Japan, April, 2008, 21(1): 8.

[7] Liu Y, Zhang T A, Masamichi Sano, He J CH, et al, Gas Holdup under Mechanical Stirring in Gas Injection Refining Process, ISIJ Meeting, Fukuoka, Japan, September, (2008).