Kemira Oyj

Jukka-Pekka Sirviö

Iiris Joensuu

Marko Kolari

Marjatta Piironen

Kaj Jansson

Eija Saari

Tuija Suhonen

Seppo Tuomivaara

Tapio Yrjanainen

The invention concerns an online method and system for monitoring properties of an aqueous stream of an industrial process. The method comprises providing an initial aqueous stream originating from said process, the aqueous stream containing solid matter exhibiting a first settling behavior; adding modifying agent to the initial aqueous stream at an addition rate sufficient to provide a modified aqueous stream containing solid matter exhibiting a second settling behavior different from the first settling behavior; conducting a sample of the initial aqueous stream or modified aqueous stream, any combination stream comprising the modified aqueous stream or any substream of the modified aqueous stream batchwise from a sampling point to a settling vessel having a volume; and measuring the settling behavior of the solid matter in the sample locally in the settling vessel as a function of time. The invention can be used for efficient monitoring and, optionally, controlling the degree of agglomeration of pulp and paper or board manufacturing processes.

Method and system for monitoring properties of an aqueous stream

Embodiments of the present disclosure include methods to control the quantity of vapor phase corrosion, devices, and the like.

Device and method for monitoring biocide dosing in a machine

Growing community of inventors

Espoo, Finland

Jukka-Pekka Sirviö