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Improving Dewatering, Energy Use and Press Fabric Life

Pulp & Paper, 2008-10, Vol.82 (10), p.35

Copyright Paperloop, Inc. Oct 2008 ;ISSN: 0033-4081 ;CODEN: PUPAA8

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  • Title:
    Improving Dewatering, Energy Use and Press Fabric Life
  • Author: Buckman, David
  • Subjects: Design ; Energy efficiency ; Machinery ; Maintenance management ; Optimization ; Payback periods ; Pulp & paper industry ; Water measurement
  • Is Part Of: Pulp & Paper, 2008-10, Vol.82 (10), p.35
  • Description: Press fabric suppliers for years have promoted increased void volume, heavier press fabric design and the need for improved vacuum levels in the press section. Today most mills lack adequate vacuum to dewater press fabric designs that can be as heavy as 2100 g/m2. Today's modem multiple layer seam press fabric designs require between 18 and 20 CFM to dewater effectively, relying strictly on vacuum box dewatering. This has led to inefficiencies in total dryness leaving the press and most presses are operating with press fabric designs that are too heavy for the application. The other overriding factor is speed. Nip dewatering can lead to improved press solids, a reduction in vacuum and improved press fabric life. Many modern machines have proven that controlled nip dewatering versus strictly vacuum dewatering is a very efficient way to improve press performance. One must be able to control vacuum so that the split between nip and vacuum box is optimized.
  • Publisher: San Francisco: RISI, Inc
  • Language: English
  • Identifier: ISSN: 0033-4081
    CODEN: PUPAA8
  • Source: ProQuest Central
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