Development of a continuous-flow reactor system for conversion of water-soluble organics in supercritical water under superhigh pressure

Toshiyuki Nonaka, Jumpei Okuno, Taku Aida, Kiyotaka Hatakeda, Akira Suzuki, Kiyohiko Tajima, Hideo Hattori, Kunio Arai

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

A continuous-flow reactor system for chemical conversions in supercritical water under superhigh pressure (above 100 MPa) has been developed. An aqueous solution was mixed with preheated water in a swirl-injection mixer. At the mixing point, the solution was rapidly heated to its reaction temperature and the reaction was initiated. The residence time in the tubular reactor was less than 1 s. After passing through the reactor, the solution was quickly cooled with a cooling water jacket to terminate the reaction. Superhigh pressure of the reactor system was controlled at the sampling point using back-pressure regulators. Water-soluble organics (glucose, fructose, etc.) can be converted into useful intermediates and chemicals (glyceraldehyde, 5- hydroxymethylfurfural, lactic acid, etc.) in subcritical and supercritical water at 523-873 K, 20-200 MPa using this system. As a preliminary study of conversions under supercritical pressure, the fluid behavior in the mixer was investigated using a three-dimensional simulation based on the finite volume method.

Original languageEnglish
Pages (from-to)356-362
Number of pages7
Journalkagaku kogaku ronbunshu
Volume32
Issue number4
DOIs
Publication statusPublished - 2006 Sep 18

Keywords

  • Biomass Decomposition
  • Continuous-Flow Reactor
  • Reaction Engineering
  • Supercritical Water
  • Superhigh Pressure

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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