Method for the preparation of a pulp

Details Method for the preparation of a pulp Method for the preparation of a pulp

1976-08-10

1978-10-03

Bashore, S. Leon

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

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

162 33, 162 34, 162 89, D21C 1112

Patent

active

041182715

ABSTRACT:
A process for the preparation of a pulp, involving the steps of mechanically milling a fibrous vegetable material at an elevated temperature, delignifying the milled material by reaction with a chlorine-containing compound and ammonia or ammonium hydroxide, and recovering the chlorine-containing compound from the waste liquor in the form of hydrochloric acid.

REFERENCES:
patent: 1100519 (1914-06-01), Brech et al.
patent: 1780842 (1930-11-01), Richter
patent: 1852264 (1932-04-01), Rinman
patent: 2169473 (1939-08-01), Olsen
patent: 3269095 (1966-08-01), Brannland
patent: 3472731 (1969-10-01), Liebergott et al.
patent: 3595742 (1971-07-01), Hess et al.
patent: 3622444 (1971-11-01), Andrews
patent: 3652387 (1972-03-01), Wilder
patent: 3694307 (1972-09-01), Iwahashi
patent: 3755068 (1973-08-01), Rapson
Casey, "Pulp & Paper", 2nd Ed., (1960) vol. I, p. 112 498.

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