Behavior of organic impurities in distillation column for bioethanol production plant from waste woods

Masato Kawahara, Eiji Matuoka, Shingo Kariya, Kazuho Nakamura

Abstract

In the distillation process occurring in a bioethanol production plant using waste woods for ethanol concentration and for removing organic impurities, the product quality improved when pH control is applied in the reffux tank by adding NaOH and discharging fusel oil from a side stream of the distillation column. In this study, the details of the improvements were studied from the viewpoint of the vapor-liquid equilibrium (VLE) of organic impurities present in the distillation column. The relative volatilities of the impurities to ethanol were determined by using a model mixture containing 13 organic impurities found in the plant as a function of ethanol mole fraction. The distributions of the 13 organic impurities in the distillation column were determined by the Thiele Geddes method by using the measured relative volatility data. The behavior of the 13 organic impurities in the distillation column was useful to understand the quality of the product and the effect of the fusel oil discharge from a side stream. The relative volatilities of butyric acid, 1-butanol, 2-methyl-1-butanol and 2-butanol decreased by NaOH addition.

Original languageEnglish
Pages (from-to)747-752
Number of pages6
JournalJournal of Chemical Engineering of Japan
Volume49
Issue number8
DOIs
StatePublished - 2016

Fingerprint

Impurities
Distillation columns
Butenes
Ethanol
Wood wastes
Bioethanol
Butyric acid
Distillation
Phase equilibria

Keywords

  • Bioethanol
  • Distillation
  • Organic impurities
  • Vapor-Liquid equilibrium
  • Waste woods

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Behavior of organic impurities in distillation column for bioethanol production plant from waste woods. / Kawahara, Masato; Matuoka, Eiji; Kariya, Shingo; Nakamura, Kazuho.

In: Journal of Chemical Engineering of Japan, Vol. 49, No. 8, 2016, p. 747-752.

Research output: Contribution to journalArticle

Kawahara, Masato; Matuoka, Eiji; Kariya, Shingo; Nakamura, Kazuho / Behavior of organic impurities in distillation column for bioethanol production plant from waste woods.

In: Journal of Chemical Engineering of Japan, Vol. 49, No. 8, 2016, p. 747-752.

Research output: Contribution to journalArticle

@article{3c75cc9d76bd461ba05fa1d0c5f25ac4,
title = "Behavior of organic impurities in distillation column for bioethanol production plant from waste woods",
keywords = "Bioethanol, Distillation, Organic impurities, Vapor-Liquid equilibrium, Waste woods",
author = "Masato Kawahara and Eiji Matuoka and Shingo Kariya and Kazuho Nakamura",
year = "2016",
doi = "10.1252/jcej.15we294",
volume = "49",
pages = "747--752",
journal = "Journal of Chemical Engineering of Japan",
issn = "0021-9592",
publisher = "Society of Chemical Engineers, Japan",
number = "8",

}

TY - JOUR

T1 - Behavior of organic impurities in distillation column for bioethanol production plant from waste woods

AU - Kawahara,Masato

AU - Matuoka,Eiji

AU - Kariya,Shingo

AU - Nakamura,Kazuho

PY - 2016

Y1 - 2016

N2 - In the distillation process occurring in a bioethanol production plant using waste woods for ethanol concentration and for removing organic impurities, the product quality improved when pH control is applied in the reffux tank by adding NaOH and discharging fusel oil from a side stream of the distillation column. In this study, the details of the improvements were studied from the viewpoint of the vapor-liquid equilibrium (VLE) of organic impurities present in the distillation column. The relative volatilities of the impurities to ethanol were determined by using a model mixture containing 13 organic impurities found in the plant as a function of ethanol mole fraction. The distributions of the 13 organic impurities in the distillation column were determined by the Thiele Geddes method by using the measured relative volatility data. The behavior of the 13 organic impurities in the distillation column was useful to understand the quality of the product and the effect of the fusel oil discharge from a side stream. The relative volatilities of butyric acid, 1-butanol, 2-methyl-1-butanol and 2-butanol decreased by NaOH addition.

AB - In the distillation process occurring in a bioethanol production plant using waste woods for ethanol concentration and for removing organic impurities, the product quality improved when pH control is applied in the reffux tank by adding NaOH and discharging fusel oil from a side stream of the distillation column. In this study, the details of the improvements were studied from the viewpoint of the vapor-liquid equilibrium (VLE) of organic impurities present in the distillation column. The relative volatilities of the impurities to ethanol were determined by using a model mixture containing 13 organic impurities found in the plant as a function of ethanol mole fraction. The distributions of the 13 organic impurities in the distillation column were determined by the Thiele Geddes method by using the measured relative volatility data. The behavior of the 13 organic impurities in the distillation column was useful to understand the quality of the product and the effect of the fusel oil discharge from a side stream. The relative volatilities of butyric acid, 1-butanol, 2-methyl-1-butanol and 2-butanol decreased by NaOH addition.

KW - Bioethanol

KW - Distillation

KW - Organic impurities

KW - Vapor-Liquid equilibrium

KW - Waste woods

UR - http://www.scopus.com/inward/record.url?scp=84983335829&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84983335829&partnerID=8YFLogxK

U2 - 10.1252/jcej.15we294

DO - 10.1252/jcej.15we294

M3 - Article

VL - 49

SP - 747

EP - 752

JO - Journal of Chemical Engineering of Japan

T2 - Journal of Chemical Engineering of Japan

JF - Journal of Chemical Engineering of Japan

SN - 0021-9592

IS - 8

ER -