APMP pulping process of eucalyptus, paper mulberry and poplar admixture

Abstract

The invention discloses an APMP pulping process of a eucalyptus, paper mulberry and poplar admixture. The process includes steps: preparing materials, pre-steaming, pre-processing, preparing initial pulp, fine-processing, preparing finished product pulp, and storing. The process effectively expands pulping raw material resources and relieves pressure caused by raw material supply deficiency, thereby being lower in pulping raw material cost; produced chemithermomechanical pulp ensures physical strength reaching standards, bulk and light scattering coefficient are higher, and a foundation is laid for producing printing-and-writing paper which is low in quantification and high in opacity.

Description

technical field [0001] The invention relates to the field of pulping, in particular to an APMP pulping process of mixed wood of eucalyptus, structural wood and poplar. Background technique [0002] Due to its good processing performance, European and American black poplar has become the main raw material for APMP pulping; it has become the most consumed log material in my country's panel industry, making it difficult for companies to purchase a sufficient amount of European and American black poplar, which has intensified industry competition; on the other hand , the large-scale planting of black poplar in Europe and the United States has accelerated the drought of wetlands, changed the soil structure of wetlands, and also destroyed the biodiversity of wetlands. Migratory birds were blocked by obstacles, and fish spawning and migration were also destroyed. To protect the environment, a large number of nature reserves (such as Dongting Lake Reserve) are gradually clearing popla...

AI Technical Summary

Problems solved by technology

[0002] Due to its good processing performance, European and American black poplar has become the main raw material for APMP pulping; it has become the most consumed log material in my country's panel industry, making it difficult for companies to purchase a sufficient amount of European and American black poplar, which has intensified industry competition; on the other hand , the large-scale planting of black poplar in Europe and the United States has accelerated the drought of wetlands, changed the soil structure of wetlands, and also destroyed the biodiversity of wetlands. Migratory birds were blocked by obstacles, and fish spawning and migration were also destroyed. To protect the environment, a large number of nature reserves (such as Dongting Lake Reserve) are gradually clearing poplar trees to restore ecology, further making it difficult for the supply of poplar raw materials to meet demand