Preparation method of pollution-free high-whiteness palm silk paper pulp and application of paper pulp in paper product

Abstract

The invention relates to a preparation method of pollution-free high-whiteness palm silk paper pulp and an application of the paper pulp in a paper product. The preparation method mainly comprises the steps that a palm silk raw material is cooked and bleached, and the obtained paper pulp is used for making the paper product. Cooking adopts a sulfate method, and paper pulp bleaching adopts a pollution-free (Total Chlorine Free-TCF) section procedure bleaching technology. Each section in an OPAP1P2 bleaching procedure adopts a medium-concentrated bleaching technique (a concentration of each section of paper pulp is 10-15%), so that the bleaching reaction efficiency can be improved, energy sources can be saved (heating the paper pulp), and the water consumption can be reduced. The bleaching does not require any chlorine (chlorine, pypocholoride or chlorine dioxide), so that bleaching waste water can be used for preparation of a cooking liquid and washing of unbleached pulp, and then enters an alkali recovery system, and the preparation method can save water and energy, reduce environmental pollution and allow resources to be fully used. With the adoption of the bleaching technology, the pollution-free high-whiteness (82-85% of ISO (Isobutanol)) paper pulp can be prepared, can substitute bleaching hardwood pulp, and is matched with bleaching sulfate softwood pulp for making advanced cultural paper as well as paper and cardboards with high hygienic index requirements.

Description

technical field [0001] The invention belongs to the technical field of pulping and papermaking, and relates to palm fiber papermaking technology, in particular to a kind of non-polluting high-whiteness pulp made of palm fiber as raw material and the use of this pulp to produce high-grade cultural paper and paper and cardboard with high hygienic index requirements Technology. Background technique [0002] The development of my country's paper industry is closely related to national economic and social development, and economic development will provide strong support for the development of my country's paper industry. In 2011, the production volume of paper and paperboard in my country was 99.3 million tons, and the consumption volume was 97.52 million tons, ranking first in the world in terms of production and consumption. During the "Twelfth Five-Year Plan" period, my country's paper industry is still in the period of development and growth. In 2011, the per capita consumpt...

AI Technical Summary

Problems solved by technology

The above four types of patented technologies involve either no chemicals or only caustic soda is added to the pulping method; the more important difference is that none of the above four types of technologies use chlorine-free bleaching.

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