Method of operating a papermachine drying line

Details Method of operating a papermachine drying line Method of operating a papermachine drying line

1979-05-14

1982-02-09

Bashore, S. Leon

Paper making and fiber liberation

Processes and products

With measuring, inspecting and/or testing

34 41, 34 48, 162252, 162253, 162DIG11, 364471, D21F 504, D21F 506

Patent

active

043148786

ABSTRACT:
A particular papermachine and type of pulp stock for forming a particular basis weight web are analyzed for deriving a correlation between pulp stock drainage rate and the lowest obtainable critical moisture content of said paper web. From knowledge of the lowest critical moisture content and main steam pressure, differential pressure values between the several dryer pressure sections of the papermachine are determined for drying said web along the most energy-efficient drying rate trajectory. Also disclosed is a dryer steam pressure differential control program for maintenance of a pre-determined magnitude of condensate inventory within the drying cylinders under normal running conditions and under conditions of interrupted web continuity.

REFERENCES:
patent: 3056213 (1962-10-01), Kellogg
patent: 3490689 (1970-01-01), Hart et al.
patent: 3711687 (1973-01-01), Stout et al.
patent: 3846231 (1974-11-01), Crosby et al.
Massey Jr., "Goal: Computer Control From 1 Year of Order . . . " Pulp and Paper; Apr. 1970.
Ekstram et al., "Automating the Control Loops on a Swedish Kraft Paper Machine"; Pulp and Paper; Apr. 3, 1967.
Meisel "Analog Computer Simulation of Paper Drying" Tappi; vol. 60, No. 1; 1977.

Affiliated with

Also associated with

Rating

Method of operating a papermachine drying line does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of operating a papermachine drying line, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of operating a papermachine drying line will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1259695