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US 5,822,220 AGranted
Process for controlling the efficiency of the causticizing process
AssigneeFisher-Rosemount Systems, Inc.
InventorGlenn H. Baines
Life of this patent
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AssigneeFisher-Rosemount Systems, Inc.
InventorGlenn H. Baines
Estimating the term…
Continuous measurements are made of a characteristic of the individual components of green liquor fed to a slaker and white liquor exiting from the slaker. The liquor component measurements provide a precise characterization of the liquors allowing for a more efficient control of the causticizing reaction in the kraft process. The individual component measurements are provided as inputs, along with certain ambient measurements, to a non-linear controller. The controller produces a causticizing control signal which is used to control the amount of lime introduced to the slaker. The controller is adapted to a particular process installation through the application of data collected from that installation. The controller, for example a neural network or fuzzy logic controller, produces a causticizing control signal according to unique parameters developed for the specific installation.
A method of controlling the causticizing reaction for producing a white liquor having multiple white liquor components from a green liquor having multiple green liquor components, comprising the steps of:
An apparatus for controlling the causticizing reaction to produce a white liquor having multiple white liquor components from a green liquor having multiple green liquor components, said apparatus comprising:
Dependencies are inferred from the claim text.