Method and apparatus for controlling the operation of stock preparation of a paper machine
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United States of America Patent
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N/A
Issued Date -
Jan 27, 2005
app pub date -
May 18, 2004
filing date -
Oct 19, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method and an apparatus for controlling the operation of stock preparation of a paper machine for preparing machine stock from component stocks. The stock preparation includes a plurality of successive blending points, where the component stocks are blended with each other, a second raw material of the machine stock is added to the stock and/or the stock is diluted by blending dilution water with the stock. The flow and/or consistency of one or more stocks arriving at a blending point and/or the flow and consistency of the stock leaving a blending point and/or the concentration of the second raw material of the machine stock in the stock is adjusted in such a manner that the flow and/or consistency of the stock and/or the concentration of the second raw material of the machine stock in the stock follow target values determined for them.
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