RunEco™ Less energy - more efficiency
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In the paper industry vacuum is necessary to remove water from the web, to clean the felts, and to control the web in the paper machine. In the past few years paper machines have increased in size and become faster, and as a result power consumption has also increased.
From a process point of view, the key is knowing where and how much vacuum power is necessary. More vacuum can mean greater performance, but this is definitely not always the case. Applying too much vacuum in the beginning of the forming section can ruin your paper quality.
In the same way, too much vacuum in the felt suction boxes may seriously disturb press dewatering. For optimal performance, two things are essential: reliable measurements and controllable vacuum.
It’s generally accepted that nip dewatering is the most efficient and economical method of removing water at the press section. However, in order to get the full benefit from nip dewatering, press section doctoring and save-alls need to be properly designed to handle water loads. It’s also very important to maintain high void volume of the press rolls by removing water from the roll grooves and holes.
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