Method and apparatus for controlling a causticizing process
AssigneeMetso Paper Automation Oy
InventorHannu Kuoksa
Life of this patent
Estimating the term…
Abstract
A method and an apparatus for controlling a causticizing process, the process comprising slaking, causticizing and white liquor preparation. The slaking is carried out using a slaker into which green liquor and lime is fed to produce lime milk. The causticizing process is controlled by applying a model that describes at least a part of the causticizing process.
Claims25
A method for controlling a causticizing process which comprises slaking, causticizing and the preparation of white liquor, the slaking being carried out using a slaker into which green liquor and lime are fed to produce lime milk, the method comprising controlling the causticizing process by applying a model that describes at least a part of the process and controlling green liquor density on the basis of a total titratable alkali.
An apparatus for controlling a causticizing process which comprises slaking, causticizing and the preparation of white liquor, the slaking taking place in a slaker into which green liquor and lime are arranged to be supplied to produce lime milk, the apparatus comprising means for controlling the causticizing process by applying a model that describes at least a part of the process and means for controlling green liquor density on the basis of total titratable alkali.
Dependencies are inferred from the claim text.