Chemi-mechanical pulp is a pulping process that separates fibrous materials by combining three ways like chemical, heat and mechanical. Pulp yield of chemi-mechanical pulp is about 80~90%. APMP is short for alkaline peroxide mechanical pulp, which is a kind of new technology for high yield of paper pulp.
APMP is a new type of chemical mechanical pulp production process, was developed in the 1990s. In the beginning stage, it is mainly for the production of a high degree of chemical mechanical pulp like newsprint, but by the late 90s, began to apply for papermaking of paperboard. APMP can get the pulp with high whiteness, little pollution, low chemical consumption.
The pulping mechanism of APMP is the result of the interaction of NaOH and H2O2. The chemical reaction occurs mainly in the pretreatment stage. Pulping and bleaching are done simultaneously, while bleaching is done while pulping. Generally, there are three steps of APMP pulping processing:
The function of NaOH:
The function of H2O2
As a professional paper pulp machine manufacturer, Anyang Machinery can provide all related equipment for APMP production line. According to different requirement of clients, custom design is available.
Heat Recovery Equipment:
Container (Woodchip silo, latency chest, HC bleaching tower, filter, etc.):