Use of activated carbon to recover and separate chemicals produc

Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Including recovery of organic by-product

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162 16, 162 29, 210 40, D21C 1102

Patent

active

041592239

ABSTRACT:
Chemicals produced during pulping operations are recovered and separated by passing chemical-containing liquors from said operations through one or more units containing activated carbon. The chemicals are recovered from said units by introducing a solvent into said unit and separating the materials removed therefrom in a fractionating column.

REFERENCES:
patent: 2585491 (1952-02-01), Olsen
patent: 2585492 (1952-02-01), Olsen
patent: 2710254 (1955-06-01), Van Blaricom et al.
patent: 3223748 (1965-12-01), Bohrer
patent: 3436344 (1969-04-01), Canning et al.
Timpe, W. G. et al., "The Use of Activated Carbon for Water Renovation in Kraft Pulp and Paper Mills," Presented at Seventh TAPPI Air & Water Coference, 6/1970.

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