Method and apparatus for determining the lignin content in pulp

Details Method and apparatus for determining the lignin content in pulp Method and apparatus for determining the lignin content in pulp

1981-01-14

1982-08-24

Marantz, Sidney

Chemistry: physical processes

Physical processes

Crystallization

162 49, 162 61, 162 62, 422 68, 422 78, G01N 2520

Patent

active

043459137

ABSTRACT:
A method and a device for determining the lignin content in pulp by measuring the temperature increase on chlorination of a pulp sample with well-defined moisture content. The pulp sample is dewatered by pressing and simultaneously being blown through by a gas having low oxidization activity, subsequent to which the maximum temperature increase is registered when the pulp sample is blown through by chlorine gas.

REFERENCES:
patent: 3272691 (1966-09-01), Shera
patent: 3888726 (1975-06-01), Hultman
patent: 4042328 (1977-08-01), Seymour
patent: 4162933 (1979-07-01), Sherman
Chemical Abstracts, 71:31553c, (1969).

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