Process intensification by combining ionic liquids and supercritical carbon dioxide applied to the design of Levodopa production

Martijn R. Damen, Ruud W. Brand, Sophie C. Bloem, Evelien Pingen, Klaas Steur, Cor J. Peters, Geert Jan Witkamp*, Maaike C. Kroon

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

By combining ionic liquids and supercritical carbon dioxide a new class of intensified processes comes into perspective. This is illustrated here in a novel conceptual design for Levodopa production based on a recently granted patent [M.C. Kroon, A. Shariati, L.J. Florusse, C.J. Peters, J. van Spronsen, G.J. Witkamp, R.A. Sheldon, K.E. Gutkowski, Process for carrying out a chemical reaction, International Patent WO 2006/088348 A1 (2006)], which uses an ionic liquid and supercritical carbon dioxide as solvents in the slowest processing step. Compared to the conventional Levodopa production, the energy consumption in this processing step is reduced from 22.9 MJ/kg product to 17.4 MJ/kg product, the replacement of deactivated catalyst is reduced from 276 mg/kg product to 2.3 mg/kg product, solvent replacement is reduced from 2.68 kg/kg product to 0.03 kg/kg product and the variable costs, excluding raw materials, are reduced from 6.49 €/kg product to 0.68 €/kg product using this novel concept. However, the estimated investment costs of the novel process concept are expected to be higher (in the order of 14 M€). Yet, the payback time is only 1.6 years.

Original languageEnglish (US)
Pages (from-to)549-553
Number of pages5
JournalChemical Engineering and Processing: Process Intensification
Volume48
Issue number1
DOIs
StatePublished - Jan 1 2009
Externally publishedYes

Keywords

  • Conceptual process design
  • Ionic liquid
  • Levodopa production
  • Supercritical carbon dioxide

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Energy Engineering and Power Technology
  • Process Chemistry and Technology
  • Industrial and Manufacturing Engineering

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