Catalyzer for clean pulping and process for using the same

Details Catalyzer for clean pulping and process for using the same Catalyzer for clean pulping and process for using the same

2007-09-04

2007-09-04

Griffin, Steven P. (Department: 1731)

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Chemical treatment after start or completion of mechanical...

C162S009000, C162S026000, C162S087000, C162S099000, C008S108100, C008S110000, C252S188210, C502S172000

Reexamination Certificate

active

10537841

ABSTRACT:
A catalyzer for clean pulping includes sodium salicylate, anion silicate softener, cooking aids, liquid(gaseous) chlorine and water. A process for using the catalyzer for clean pulping includes the following steps:1, cutting and impurities removing for the raw material,2, feed preparation and impurities removing,3, dividing into fibers by refining,4, catalysis copolymerization,5, refining,6, concentration and separation,7, pulp bleaching,8, pulp washing and9, finished pulp. The present invention realizes the clean production; it does not need to digest and does not produce black liquor; the process is simple and is performed at normal temperature; the resource of crops is fully used; the effect of water conservation is remarkable; it is very easy to control each stage separately and/or simultaneously.

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