Articles & Issues

Language: English

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received October 24, 2011
Accepted March 31, 2012

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

All issues

Steam regeneration of acetone and toluene in activated carbon and dealuminated Y-zeolite beds

Dong-Geun Lee Yun-Jin Han Chang-Ha Lee^†

Department of Chemical and Biomolecular Engineering, Yonsei University, 262, Seongsan-ro, Seodaemun-gu, Seoul 120-749, Korea

Korean Journal of Chemical Engineering, September 2012, 29(9),
10.1007/s11814-012-0044-x

Download PDF

Abstract

The dynamics of steam regeneration in activated carbon and dealuminated Y-zeolite (DAY-zeolite) beds was studied to recover acetone and toluene from effluent gases. Due to the higher adsorption capacity of acetone on both adsorbents, the desorption breakthrough of toluene was faster than that of acetone, but the breakthrough shape of acetone was steeper than that of toluene. The variation in breakthrough time as a function of steam flow rate was less in the activated carbon bed than in the DAY-zeolite bed. The inside temperature profiles during regeneration showed stepwise shapes. A temperature plateau was observed near 355 K for toluene, which is lower than its boiling temperature and azeotrope. A temperature plateau for acetone occurred near 330 K, near its boiling temperature. The duration of the temperature plateau at the bed end corresponded with the time period of high desorption concentration during acetone_x000D_ desorption; for toluene, plateau duration was shorter than the duration of high desorption concentration. The maximum effluent concentration of toluene reached only 80% of the feed concentration, while that of acetone was almost 100%. Therefore, the water-miscibility of the adsorbate was an important factor in steam regeneration.

Keywords

Steam Regeneration Acetone Toluene Activated Carbon DAY-zeolite

References

Monneyron P, Manero MH, Foussard JN, Environ. Sci. Technol., 37, 2410 (2003)
Lillo-Rodenas MA, Carratala-Abril J, Cazorla-Amoros D, Linares-Solano A, Fuel Process. Technol., 77-78, 331 (2002)
Kang M, Bae YS, Lee CH, Carbon., 43, 1512 (2005)
Brosillon S, Manero MH, Foussard JN, Environ. Sci. Technol., 35, 3571 (2001)
Kang M, Lee CH, Appl. Catal. A: Gen., 266(2), 163 (2004)
Das D, Gaur V, Verma N, Carbon., 42, 2949 (2004)
Hu XJ, Qiao SZ, Zhao XS, Lu GQ, Ind. Eng. Chem. Res., 40(3), 862 (2001)
Adolphs J, Setzer MJ, J. Colloid Interface Sci., 180(1), 70 (1996)
Guillemot M, Mijoin J, Mignard S, Magnoux P, Ind. Eng. Chem. Res., 46(13), 4614 (2007)
Serrano DP, Calleja G, Botas JA, Gutierrez FJ, Ind. Eng. Chem. Res., 43(22), 7010 (2004)
Ahn H, Lee CH, AIChE J., 49(6), 1601 (2003)
Lee JJ, Kim MK, Lee DG, Ahn H, Kim MJ, Lee CH, AIChE J., 54(8), 2054 (2008)
Lee SJ, Jung JH, Moon JH, Jee JG, Lee CH, Ind. Eng. Chem. Res., 46(11), 3720 (2007)
Manjare SD, Ghoshal AK, Ind. Eng. Chem. Res., 45(19), 6563 (2006)
Blocki SW, Environ. Prog., 12, 226 (1993)
Kim JH, Lee SJ, Kim MB, Lee JJ, Lee CH, Ind. Eng. Chem. Res., 46(13), 4584 (2007)
Lee DG, Kim JH, Lee CH, Sep. Purif. Technol., 77(3), 312 (2011)
Yun JH, Choi DK, Moon H, Chem. Eng. Sci., 55(23), 5857 (2000)
Oh KJ, Park DW, Kim SS, Park SW, Korean J. Chem. Eng., 27(2), 632 (2010)
Grande CA, Gascon J, Kapteijn F, Rodrigues AE, Chem. Eng. J., 160(1), 207 (2010)
Perry RH, Green DW, Maloney JO, Perry’s chemical engineers' handbook, 6th Ed, McGraw-Hill, New York (1984)
Ryu YK, Chang JW, Jung SY, Lee CH, J. Chem. Eng. Data, 47(2), 363 (2002)
Ryu YK, Lee HJ, Yoo HK, Lee CH, J. Chem. Eng. Data, 47(5), 1222 (2002)