Method of producing pulp and burning waste liquor obtained there

Details Method of producing pulp and burning waste liquor obtained there Method of producing pulp and burning waste liquor obtained there

1976-03-15

1977-09-20

Bashore, S. Leon

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

With regeneration, reclamation, reuse, recycling or...

162 30K, 162DIG8, 423207, 423240, 423495, 423561R, 423DIG3, D21C 1112, D21C 1104

Patent

active

040494896

ABSTRACT:
Environmental regulations tend to restrict the emissions from pulping platns, which increase the amount of sulphur and chlorine in the cooking liquor to undesirable amounts. This is detrimental to the process and increases the risk of corrosion upon the furnace walls. According to the invention certain metals, preferably iron and/or aluminum are burned together with the waste liquor, and will form compounds with the sulphur and the chlorine, respectively, which are easily separated from the chemicals taking part in the normal process cycle.

REFERENCES:
patent: 1852264 (1932-04-01), Rinman
patent: 1906102 (1933-04-01), Rinman
patent: 3043655 (1962-07-01), Green et al.
patent: 3269095 (1966-08-01), Brannlund
patent: 3296064 (1967-01-01), Cann
patent: 3746612 (1973-07-01), Rapson et al.
patent: 3959068 (1976-05-01), McIlroy et al.

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