Using On-Site Produced Alkaline Peroxide for Pulp Bleaching, 1996 Pulping Conference Proceedings

Indresh Mathur

Robert Dawe

Dow Chemical Canada Inc.

Today hydrogen peroxide is used in virtually all ECF and TCF bleaching sequences. Therefore, a lower cost peroxide source can result in significant savings on a mill’s bleaching chemical cost. This paper describes an on-site hydrogen peroxide process capable of supplying typical mills with 30% lower cost peroxide. This paper shows how the on-site product can be applied to lower the chemical cost for making ECF pulps. It has been shown that the on-site alkaline peroxide can be directly used in the EOP stage. The economics of using on-site peroxide justifies increasing H2 O2 charge in the EOP stage which would result in lowering of chlorine dioxide consumption. Chemical cost savings are maximum for mills limited in chlorine dioxide capacity, and currently paying a premium price for their merchant peroxide.

Using On-Site Produced Alkaline Peroxide for Pulp Bleaching,
Using On-Site Produced Alkaline Peroxide for Pulp Bleaching, 1996 Pulping Conference Proceedings
35.00

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