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Solar collectors versus lamps—a comparison of the energy demand of industrial photochemical processes as exemplified by the production of ε-caprolactam

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  • Funken, Karl-Heinz
  • Müller, Franz-Josef
  • Ortner, Jürgen
  • Riffelmann, Klaus-Jürgen
  • Sattler, Christian

Abstract

The energy demand of photochemical synthesis of ε-caprolactam was compared for two plant concepts. The conventional lamp-driven concept followed the process as realized on an industrial scale by Toray Ltd, Japan and a solar concept was designed at identical yearly output. The aim of the comparison was to determine the savings of fossil fuels that could be achieved if photochemistry could make use of solar radiation instead of artificial light. The use of solar radiation for the photochemical production of ε-caprolactam has a 4-fold lower demand for electric current and an 8-fold lower demand for cooling energy as compared to an equivalent conventionally operated route. Furthermore, due to avoided conversion of fossil fuel to electric current, a solar process would allow specific emissions of 1.5–2.5tons of CO2 per ton ε-caprolactam to be avoided, depending on the primary energy carrier used.

Suggested Citation

  • Funken, Karl-Heinz & Müller, Franz-Josef & Ortner, Jürgen & Riffelmann, Klaus-Jürgen & Sattler, Christian, 1999. "Solar collectors versus lamps—a comparison of the energy demand of industrial photochemical processes as exemplified by the production of ε-caprolactam," Energy, Elsevier, vol. 24(8), pages 681-687.
    • Handle: RePEc:eee:energy:v:24:y:1999:i:8:p:681-687
    DOI: 10.1016/S0360-5442(99)00024-9
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    Cited by:

    1. Funken, Karl-Heinz & Becker, Manfred, 2001. "Solar chemical engineering and solar materials research into the 21st century," Renewable Energy, Elsevier, vol. 24(3), pages 469-474.

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