revised_Application technology pulp washer in the Pulp & Paper sector

Pulp washing with CO2

Carbon dioxide to improve efficiency in pulp washing

GAS APPLICATION

The use of CO2 can improve the efficiency of alkaline washing stages. This technology can thus be considered for an optimisation of brown-stock washing or washing alkaline bleaching stages. If this technology is implemented correctly, many process parameters can be improved without investing heavily in new washing units:

 

  • Lowering of washing water consumption
  • Increase the capacity of the wash and the evaporation plant
  • Increase in production rate
  • Reduction in alkali loss
  • Lower bleaching agent usage
  • Decrease in foam formation and less anti-foaming agent required 
  • For integrated factories, reduction in use of chemicals on the paper machine
  • Reduction in COD in waste water

MESSER SOLUTION


As hardware for the feed and dissolution of carbon dioxide, especially in highly viscous mixtures, specially designed nozzles must be used whose tendency to clog is as low as possible.

revised_Customer process pulp washer in the Pulp & Paper sector

Pulp washing

Brown stock washing and alkaline bleaching stages washing

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