Invention Grant
- Patent Title: Method and apparatus for reducing the water and energy consumption of a paper machine with the help of a vacuum system and optimization of solids content as well as use of the same
- Patent Title (中): 借助于真空系统降低造纸机的水和能量消耗的方法和装置以及固体含量的优化以及使用它们
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Application No.: US14351085Application Date: 2012-10-05
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Publication No.: US09051685B2Publication Date: 2015-06-09
- Inventor: Juha Karvinen , Kimmo Loippo
- Applicant: RUNTECH SYSTEMS OY
- Applicant Address: FI Kolho
- Assignee: RUNTECH SYSTEMS OY
- Current Assignee: RUNTECH SYSTEMS OY
- Current Assignee Address: FI Kolho
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: FI20115998 20111011
- International Application: PCT/FI2012/050960 WO 20121005
- International Announcement: WO2013/053993 WO 20130418
- Main IPC: D21F1/50
- IPC: D21F1/50 ; D21F1/32 ; D21F1/52 ; D21F3/04 ; D21F3/10 ; D21F5/20 ; D21F7/00

Abstract:
A method for reducing the water and energy consumption of a paper machine with the help of a vacuum system and optimization of web solids content. On the paper machine wire section, water is removed with the help of a hybrid vacuum system serving first the vacuum locations needing a lower vacuum level and then those requiring a higher vacuum level in such fashion that the hybrid vacuum system removes water on different sections of the paper machine at the vacuum levels rendering the individually maximized energy efficiency. Additionally the solids content on the wire section is optimized with the help of an unfelted and smooth press roll adapted above the wire suction roll.
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