Vapor-liquid distribution of oil in coat liquefaction process

Koichi Ikeda, Seiichi Okada, Michiharu Mochizuki, Tetsuya Takeda, Kouji Sakawaki, Kenji Inokuchi, Jun Ichiro Hayashi, Tadatoshi Chiba

Research output: Contribution to journalArticle

Abstract

Measurements and analyses were conducted on high-temperature and high-pressure vapor-liquid distribution in the hot separator and the reactor of a 1-ton/day coal liquefaction process supporting unit, which simulated the NEDOL process. The vapor/liquid molar ratio, measured for the individual fractions of coal-derived oil in the hot separator, decreased from 1 to 0.01 with an increase in the average boiling-point temperature from 373 to 798 K. The measured ratios generally coincided well with those calculated using the Soave-Redlich-Kwong equation, with a slight discrepancy for fractions having boiling point temperatures lower than ∼ 470 K. Based on the degree of concentration of the slurry, the fractional weight of vaporized oil was estimated to ≥ 0.7, depending on the reactor temperature and the feed ratio of gas/slurry. These results were used in operation and optimization of a 150-ton/day pilot plant for the NEDOL process.

Original languageEnglish
Number of pages1
JournalJOURNAL OF CHEMICAL ENGINEERING OF JAPAN
Volume36
Issue number3
Publication statusPublished - Mar 1 2003
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

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  • Cite this

    Ikeda, K., Okada, S., Mochizuki, M., Takeda, T., Sakawaki, K., Inokuchi, K., Hayashi, J. I., & Chiba, T. (2003). Vapor-liquid distribution of oil in coat liquefaction process. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, 36(3).