Wet strength paper treatment technology

Abstract

The invention relates to a wet strength paper treatment technology. Hot water and wet strength paper are added to a pulp kneader to pulp the wet strength paper, and heavy metal impurities contained in the wet strength paper are removed after the wet strength paper is pulped; and pulp is condensed by spiral condensing equipment, is heated by spiral heating equipment and enters a thermal dispersionmachine to be further torn, diluted and beaten to prepare fiber pulp. The wet strength paper treatment technology effectively improves the pulping yield of the wet strength paper, lessens the waste, reduces the production cost and improves the economic benefits.

Description

A wet strength paper treatment process technical field The invention relates to a wet-strength paper treatment process, in particular to a wet-strength paper treatment process with strong ability to break wet-strength paper and high yield of pulp. Background technique With the development of the world's paper industry, paper resources are becoming increasingly scarce. The comprehensive utilization of waste paper and the improvement of the recycling rate of waste paper have become the only way for the development of the global paper industry. Wet strength paper accounts for a certain proportion of the waste paper recycled in the market. This kind of paper has high wet strength and is difficult to break down into pulp. If the paper mill adopts the conventional waste paper treatment process, it is difficult to disintegrate into pulp when it is processed together with other waste paper. During the production process, most of them are discharged with slag, resulting in a large...

AI Technical Summary

Problems solved by technology

Wet strength paper accounts for a certain proportion of the waste paper recycled in the market. This kind of paper has high wet strength and is difficult to break down into pulp.

If the paper mill adopts the conventional waste paper treatment process, it is difficult to disintegrate into pulp when it is processed together with other waste paper. During the production process, most of them are discharged with slag, resulting in a large amount of fiber loss. The pulped wet strength paper is less than 20%

Chinese Patent No. 200810015583.X discloses a dry and wet strength paper dissociation agent and its degradation process. The dry and wet strength paper is degraded by adding a dissociation agent, and then dehydration, beating, and screening to remove impurities to obtain a slurry. Although the pulp yield has been improved to a certain extent, it requires a long soaking time, the production efficiency is low, and it will pollute the environment, which is not conducive to environmental protection.