How to make paper pulp

Pulp is made from certain plants as raw materials, it is the basic raw material for papermaking. Plants commonly used for pulping materials can be divided into four categories: stem fibers, bast fibers, seed wool fibers, and wood fibers. Among them, wood fiber is particularly important. At present, China's wood resources are far from meeting the needs of the growing pulp and paper industry.

Pulping method

Pulp production refers to the production process that uses chemical methods, mechanical methods, or a combination of the two to dissociate plant fiber raw materials into natural or bleached pulp.

Refined raw material storage → preparation → cooking → washing → screening → bleaching (or bleaching and refining) cooking (or dipping) and refining.

Papermaking and pulping process

In addition to the above basic processes, it also includes some auxiliary processes, such as: preparation of cooking liquid, preparation of bleaching liquid, recovery and utilization of chemicals and heat energy in cooking waste gas and waste liquid, and comprehensive utilization of waste liquid