Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Conceptual Design of Vanillin Production Process Using Solvent Extraction

용매 추출을 사용한 바닐린 생산공정의 개념 설계

  • Kim, Eunkyu (School of Chemical Engineering, Chonnam National University) ;
  • Vu, Thang Toan (School of Chemical Engineering, Chonnam National University) ;
  • Song, Daesung (School of Chemical Engineering, Chonnam National University)
  • 김은규 (전남대학교 화학공학부) ;
  • ;
  • 송대성 (전남대학교 화학공학부)
  • Received : 2022.01.26
  • Accepted : 2022.03.23
  • Published : 2022.11.01
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Abstract

This study presents a conceptual design of vanillin production from Kraft lignin. Most of the existing Kraft lignin is used as low-quality boiler fuel or discarded as wastewater, and only 2% or less of lignin has been refined into high-quality products. We propose the process developed in this study to utilize discarded Kraft lignin. The existing vanillin production concept process consisted of alkali oxidation using NaOH, filtration, chromatography, and crystallization. Chromatography, which is difficult to commercialize, was changed to a solvent extraction process. The recovery rate of vanillin of the proposed solvent extraction process is 92.9%, and the purity is 99.5%, which is similar to the existing chromatography process. The reason why the solvent extraction process showing similar results to chromatography can replace the existing chromatography process was analyzed.

본 연구에서는 크라프트 리그닌(Kraft Lignin)을 사용해 바닐린을 생산하는 공정의 개념 설계를 진행하였다. 기존 크라프트 리그닌은 대부분 저품질의 보일러 연료로 사용되거나 폐수로 버려지고 오직 2% 이하의 리그닌만 고품질의 제품으로 정제된다. 버려지는 크라프트 리그닌을 활용하기 위해 새로운 공정을 제안하였다. 기존 바닐린 생산 개념 공정은 NaOH를 사용한 알칼리 산화, 여과, 크로마토그래피, 결정화 단계로 진행됐다. 이중 상용화가 어려운 크로마토그래피를 용매 추출 공정으로 변경하였다. 제안된 용매 추출 공정의 바닐린 회수율 92.9%, 순도 99.5%이며, 이는 기존 크로마토그래피 공정과 유사한 수준이다. 크로마토그래피와 비슷한 결과를 보이는 용매 추출 공정이 기존 크로마토그래피 공정을 대체할 수 있는 이유를 분석하였다.

Keywords

Acknowledgement

이 논문은 전남대학교 학술연구비(과제번호: 2021-2473) 지원에 의하여 연구되었음.

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