PITCH TROUBLE SUPPRESSION METHOD
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PROBLEM TO BE SOLVED: To provide a pitch trouble suppression method, that is useful for suppressing/preventing pitch stains in the papermaking process. SOLUTION: The pitch trouble suppression method is a pitch trouble suppression method for controlling the size of a pitch contained in the pulp slurry in the pulping step and/or the preparation step to suppress the occurrence of pitch trouble in the papermaking process, including an oxidizing agent addition step in which an oxidizing agent is added to at least one location pulp slurry in the pulping step and the preparation step so that the average particle size of the pitch contained in the pulp slurry is less than 150 μm, and/or a pitch dispersing agent addition step in which a pitch dispersing agent is added to at least one location pulp slurry in the pulping step and the preparation step. SELECTED DRAWING: Figure 1
要解决的技术问题:提供一种可用于抑制或预防造纸过程中树脂垢(pitch)生成的树脂障碍(pitch trouble)抑制方法。 技术方案:该树脂障碍抑制方法通过调控制浆工序及/或备浆工序中纸浆浆料(pulp slurry)内所含树脂的粒径,以抑制造纸过程中树脂障碍的发生,包含氧化剂添加工序和/或树脂分散剂添加工序:所述氧化剂添加工序为向制浆、备浆工序中至少一处的纸浆浆料中添加氧化剂(oxidizing agent),使纸浆浆料内所含树脂的平均粒径小于150 μm;所述树脂分散剂添加工序为向制浆、备浆工序中至少一处的纸浆浆料中添加树脂分散剂(pitch dispersing agent)。 选附图:图1




