Process Design for Supercritical Water Gasification

نویسندگان

  • Daniele Castello
  • Michele Valbusa
  • Luca Fiori
چکیده

In this paper the layout of pilot plant (100 kg/h) for the supercritical water gasification (SCWG) of biomass is proposed. The proposed layout involves a reactor, units to separate water and hydrogen, a burner and several heat exchangers. This scheme was also simulated by means of the commercial software Aspen Plus (Aspen Tech, Inc.) in order to state the influence of different parameters such as biomass concentration in the feed and biomass typology (glycerol and grape marc). Results show that SCWG process can be energetically self-sustained if minimum feeding concentrations of 15-20% are adopted. The possibility to separate hydrogen and feed it to a fuel cell was analyzed and the electric power production was calculated. The problem of heat recovery and heat dissipation was also analyzed and an evaporative cooling tower was proposed as the most economical solution.

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تاریخ انتشار 2011