Method for preparing eucalyptus and poplar mixture material bleached chemical thermomechanical pulp

Abstract

The invention belongs to the technical field of preparing bleached chemical thermomechanical pulp and in particular relates to a process method for preparing the bleached chemical thermomechanical pulp from eucalyptus and poplar. The process method adopts the eucalyptus and the poplar as raw materials to prepare the bleached chemical thermomechanical pulp; through the addition of a pulp grinding accelerant, the process reduces energy consumption of pulp grinding by 10 to 15 percent compared with the prior process for the bleached chemical thermomechanical pulp, reduces production cost, saves energy and simultaneously reduces the content of pulping fasciculus.

Description

technical field

[0001] The invention belongs to the technical field of preparing bleached chemical thermomechanical pulp, in particular to a process method for preparing bleached chemical thermomechanical pulp from eucalyptus and poplar. Background technique

[0002] With the increase of domestic paper and cardboard production capacity, the shortage of papermaking raw materials has become increasingly prominent. Wood pulp fiber has to rely on a large amount of imports. The price of raw materials is subject to foreign suppliers, which seriously affects the economic benefits of enterprises and restricts the development of the industry. The fiber yield of traditional chemical pulp production is only 50%-55%, while the bleaching chemical thermomechanical pulping technology can achieve a fiber yield of more than 85%, which is about 70% higher than the traditional chemical pulp wood utilization efficiency. Therefore, the development of bleaching chemical Thermomechanical pulping t...