Application

ZCE series pulp deaerator is kind of key equipment for the flow approach system in modern paper machine, and it is manufactured under the license of Andritze-Ahlstrom. The equipment is arranged between the cleaner and low-pulse paper machine screen, for separating and removing 100% air in pulp. It eliminates pulps fluctuations of pressure, flow or consistency before the pulp goes into the headbox, so that pulps stability will be kept in favor of sheet formation, quality stability.

Features

Realizing complete deaeration of the pulp onto the wire by physical action such as jet flow and falling film, hydraulic impact on surface, vacuum and dwell time etc.

Realizing the stability of the consistency, flow and pressure of the pulp (which goes into the headbox), so that papers basis weight varies little and paper quality will be significantly improved.

Preventing slime pulp from producing, preventing foaming, reducing the accumulation of dirty materials; so that improving the dewatering of wire end, and getting better paper formation.

Main technical date

Structure principle

  ZCE series deaerator consists of pulp-feeding jet manifold, nozzles with high rotational velocity and low pressure-drop, overflow slice and deaerators body etc. ZCE series deaerator (which is mounted in the flow approach system of a paper machine) feeds the stock (which come from the cleaner) into the pulp-feeding manifold by pressure; and going through the nozzles with high rotational velocity, the stock is jetted intensively onto the roof of the deaerator, where the stock is dispersed into a lot of droplets and a layer of fluid-flim is formed, which moves along a cylindrical surface. And the boiling action, which is generated by the vacuum in the deaerator, makes the free air and bubbles in the stock expend, impact and break under low pressure, so that the remained and combined air is effectively acted by three physical actions: separatively jetting, impacting and boiling, thus the air in the stock will be 100% removed and fiber flocculation will also be mitigated. Simultaneously pulps consistency fluctuation is divided into tiny monomers with independent component, and the monomers will dwell in the deaerator for a certain time; and being acted by the specially designed slice, the pulp flow is made flow in the opposite direction, so that the pulp-flow pulsations whose frequency are higher than 0.03Hz and consistency fluctuation will be controlled effectively.