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The sulfite pulping process is of declining relevance. New developments in the

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Area of sulfite recovery are minor and very site-specific. They target mainly at

Reduced emissions to atmosphere and at more flexibility regarding combined and

Free SO2 in the cooking acid.

References 995

References

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Industrial Utilization, Biotechnology and

Physico-Chemical Properties. Ellis Horwood

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453–464.

3 Alen, R., Analysis of degradation products:

A new approach to characterizing

The combustion properties of kraft black

liquors. J. Pulp Paper Sci., 1997; 23(2):

J62–J66.

Lisboa, S.A., et al., Isolation and structural

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Recovery

Frederick, J., Black liquor properties. In

Kraft Recovery Boilers, T.N. Adams, Ed.

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Chemical Pulping. Papermaking Science

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Читайте в этой же книге: Air is sucked from the boiler house through the forced draft fan and enters the | Is required before the boiler ash is mixed. In addition, any chemical make-up | As minor streams are neglected, such as dust, sulfur dioxide, reduced sulfur compounds | Of sodium carbonate from the smelt to sodium hydroxide needed for cooking. As | The equilibrium of the slaking reaction is far on the product side of Eq. (12), | With a lime mud precoat. As the filter drum rotates, the dregs are dewatered, | Medium as it rotates submerged in slurry, is then washed and continuously | SOLIDS FLOW | Potential to change the face of kraft chemical recovery are black liquor gasification | Heat recovery by steam generation (BLGCC; see Fig. 9.16). In such a case, |
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Or manganates in combination with BLG. The reactions in the gasifier| Caustec Causticizers (product leaflet).

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