A METHOD OF CONTROLLING A PULPING PROCESS IN A FEED-FORWARD MANNER
摘要
The invention discloses a method of controlling a pulping process wherein wood chips are conveyed to an impregnation vessel and/or to a digester where said wood chips are treated with a liquor comprising chemicals. According to the method of the invention a ratio between a measured, actual mass flow of moisture wood chips to an impregnation vessel or to a digester and an estimated mass flow of dry wood chips conveyed to the impregnation vessel or to the digester is calculated. Said ratio is used to control the pulping process. The method makes it possible to control e.g. the supply of chemicals, the liquor to wood ratio and the pulping temperature on-line, in a feed-forward manner.
申请公布号
WO2012087228(A1)
申请公布日期
2012.06.28
申请号
WO2011SE51534
申请日期
2011.12.16
申请人
STORA ENSO OYJ;NAESMAN, MATS;HARINEN, MARKO;TIMONEN, OLLI;RUOHONIEMI, KIMMO
发明人
NAESMAN, MATS;HARINEN, MARKO;TIMONEN, OLLI;RUOHONIEMI, KIMMO