Introduction of pulp equipment

Pulp equipment is the equipment used in the process of separating plant raw materials into fibers. Pulping methods can be divided into chemical method, mechanical method and chemical mechanical method. The corresponding pulping equipment includes digester, wood grinder, heat mill, pulp washer, bleaching machine, beater and waste liquid recovery equipment.

After the wood chips are preheated by steam, Pulp equipment grinds the pulp in a high-pressure state called hot wood chip groundwood pulp. The machine that produces hot wood chip groundwood pulp is a heat mill, which consumes a lot of power. Therefore, making full use of the heat energy in the refining process is the key issue of the thermal mill; the pulp washing machine is a mechanical equipment that separates the cooked pulp from the black liquor. According to the black liquor extraction rate, there are two major types of extraction: high concentration and low concentration. kind.

The purpose of Pulp equipment bleaching is to remove the residual lignin and pigments in the pulp after cooking, improve the whiteness of the pulp, and make the pulp have a white color. Bleaching machine is a kind of bleaching equipment commonly used, which is composed of bleaching tank screw propeller, washing drum and other components. The slurry and bleaching agent are placed in the pool and the washing water is continuously added, and the screw propeller is used to circulate in the pool to complete the process of mixing and chemical reaction. The water with bleaching products and residual bleaching liquid is discharged through the inner cavity of the washing drum, so that a white pulp is obtained.