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Uhde´s PRENFLO™ Gasification Processes

Uhde’s proprietary PRENFLO™ technology provides tailor-made gasification solutions optimised for the respective application in mind:

  • PRENFLO™ with Steam Generation (PSG)
  • PRENFLO™ with Direct Quench (PDQ)

Gasification is mainly a high-temperature partial oxidation process for converting carbonaceous materials into a synthesis gas composed mainly of carbon monoxide and hydrogen. A number of chemical reactions are involved, some exothermic and some endothermic:

Exothermic:
C + ½O2  CO; C + O2  CO2

Endothermic:
C + CO2  2 CO; C + H2O  CO + H2

During the gasification process, the sulphur present in the feedstock reacts to produce mainly hydrogen sulphide (H2S) and carbonyl sulphide (COS):

S + H2  H2S

S + C + ½ O2  COS.

Sulphur can therefore be readily recovered in its elemental form or as sulphuric acid, both marketable commodities.