Adsorption process dynamics with vacuum purge and atmospheric blowdown

Hyeon Lee, Young Chul Gil, Sung S. Suh, Hyung Keun Song, Sung Hyun Kim, Dong S. Doh

Research output: Contribution to journalArticle

Abstract

Experiments with a mathematical model were performed for pure CO2 feed adsorption on activated carbon up to high pressure (30 kg/cm2·G) by using H2 pressurization and vacuum purge to study adsorption steps in vacuum pressure swing adsorption and atmospheric pressure swing adsorption. All on-line real data from transmitters and instruments were obtained using the automatic control and data acquisition system. The maximum breakthrough time and the initial constant pattern were investigated under changing process variables. The maximum breakthrough times were found out under the limiting conditions and compared between two desorption methods using vacuum purge and atmospheric blowdown. The initial constant pattern occurred when the interstitial velocity approached certain * To whom correspondence should be addressed. values. The occurrence of the maximum breakthrough curves was strongly related with the formation of the initial constant pattern. From the nonisothermal and nonadiabatic model with the linear driving force model and the temperature-dependent Langmuir isotherms, the effects of the mass and heat transfer parameters on the adsorptive process were examined. The possibility of predicting the breakthrough curves was confirmed by monitoring the temperature propagation profiles. At high pressure the overall heat transfer coefficient had a larger effect on the adsorptive process than the overall mass transfer coefficient.

Original languageEnglish
Pages (from-to)1741-1770
Number of pages30
JournalSeparation Science and Technology
Volume31
Issue number12
Publication statusPublished - 1996 Dec 1

Fingerprint

Vacuum
Adsorption
Mass transfer
Pressurization
Activated carbon
Heat transfer coefficients
Atmospheric pressure
Isotherms
Transmitters
Desorption
Data acquisition
Mathematical models
Heat transfer
Temperature
Monitoring
Experiments

Keywords

  • Bulk separation
  • LDF model
  • Mass transfer coefficient
  • Maximum breakthrough time
  • Online data
  • Temperature profile
  • Vacuum purge

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Filtration and Separation
  • Process Chemistry and Technology
  • Chemistry(all)

Cite this

Lee, H., Gil, Y. C., Suh, S. S., Song, H. K., Kim, S. H., & Doh, D. S. (1996). Adsorption process dynamics with vacuum purge and atmospheric blowdown. Separation Science and Technology, 31(12), 1741-1770.

Adsorption process dynamics with vacuum purge and atmospheric blowdown. / Lee, Hyeon; Gil, Young Chul; Suh, Sung S.; Song, Hyung Keun; Kim, Sung Hyun; Doh, Dong S.

In: Separation Science and Technology, Vol. 31, No. 12, 01.12.1996, p. 1741-1770.

Research output: Contribution to journalArticle

Lee, H, Gil, YC, Suh, SS, Song, HK, Kim, SH & Doh, DS 1996, 'Adsorption process dynamics with vacuum purge and atmospheric blowdown', Separation Science and Technology, vol. 31, no. 12, pp. 1741-1770.
Lee, Hyeon ; Gil, Young Chul ; Suh, Sung S. ; Song, Hyung Keun ; Kim, Sung Hyun ; Doh, Dong S. / Adsorption process dynamics with vacuum purge and atmospheric blowdown. In: Separation Science and Technology. 1996 ; Vol. 31, No. 12. pp. 1741-1770.
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