Method for preparing high-whiteness chemical pulp and paper products thereof by using corn stalk
A manufacturing method and technology of corn stalks, applied in pulping with inorganic alkali, pulp beating method, chemical/chemical mechanical pulping, etc., can solve the problems of difficult removal of metal ions and colored substances, yellowing of pulp, and difficult bleaching of pulp, etc. question
Inactive Publication Date: 2008-07-23
TIANJIN HUAJUN SCI & TECH
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Problems solved by technology
The invention discloses a preparation method of chemical pulp with high whiteness by corn stalks and paper product, wherein steaming adopts soda cooking by adding anthraquinones and surface-active material; bleaching adopts totally-chlorine-free bleaching of short program of OPAPO in the pulp making processes, wherein OP segment is oxygenic delignification segment reinforced by small amount of hydrogen peroxide; A segment is acid treatment segment; PO> is oxygen-reinforced hydrogen peroxide bleaching segment. The preparation method of chemical pulp with high whiteness by corn stalks and paper product has the advantages of less steaming time, high steaming and bleaching efficiency, free of chlorine and chlorine compounds while bleaching, high whiteness and strength of the paper pulp, energy saving, water saving, low production cost, and favorableness to environmental protection. In addition, with whiteness rate of above 85% ISO, the paper pulp made from corn stalks is able to be made into high-grade cultural paper and paperboard as well as paper and paperboard with high sanitary indexes replacing bleached hardwood pulp or bleached hardwood pulp mixed with bleached softwood kraft pulp.
Pretreatment with alkaline reacting compoundsWater-repelling agents addition +12
- Experimental program(3)
- Effect test(1)
|Length||3.0 ~ 4.0||cm|
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