Operability of the modified petlyuk process for separation of benzene, toluene, and p-xylene ternary mixture

Takehiro Yamaki, Ryosuke Akimoto, Kei Takane, Keigo Matsuda

Research output: Contribution to journalArticle

Abstract

A modified Petlyuk process with a reboiler at the bottom of the prefractionator eliminates the need for a vapor interconnection between the main column and the prefractionator and thus improves operability. However, the effect of this configuration on the operability has not been clarified. To elucidate this, the operability of a modified Petlyuk process with a reboiler at the bottom of the prefractionator for the separation of benzene, toluene, and p-xylene ternary mixture. The effect of the bottom-out to feed ratio of the prefractionator on the separation characteristics of the modified Petlyuk process was investigated for different feed flow rates. The operation range of the modified Petlyuk process was clarified by presenting the conditions satisfying the product specifications as a contour plot for the feed flow rate and the bottom-out to feed ratio of the prefractionator. The operability of the modified Petlyuk process was compared with that of the original Petlyuk process. A dynamic simulation verified that the product specifications can be satisfied simply by adjusting the bottom-out to feed ratio of the prefractionator for a disturbance of the feed flow rate.

Original languageEnglish
Pages (from-to)45-51
Number of pages7
JournalJournal of The Japan Petroleum Institute
Volume62
Issue number1
DOIs
Publication statusPublished - 2019
Externally publishedYes

Keywords

  • Distillation
  • Dynamics
  • Modified Petlyuk process
  • Operability
  • Petlyuk process

ASJC Scopus subject areas

  • Fuel Technology
  • Energy Engineering and Power Technology

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