Air Impact on Paper Making Process
Cause of Air in Paper Stock
1. Unsuitable mechanical agitation;
2. Air leakage of conveying equipment, such as pulp pump, white water pump;
3. Poor system sealing performance brings air in;
4. The fiber fines in recycling white water bring air.
Harmful Effect of Air on Paper Making Process
1. Produce froth and then make paper making more difficult;
2. Increase dewatering obstruction and decrease drying efficiency;
3. Cause uneven concentration distribution
Method of Removing Air on Paper Making Process
1. Chemical process(such as add surface active agent)
2. Physical method(such as superheated steam)
3. Put in a buffer tank
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