Method of and an arrangement for adding a chemical to an approach flow system of a fiber web machine
AssigneesWetend Technology, Valmet Technologies Oy
InventorsJouni Matula, Jari Mäkinen, Jussi Matula
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Abstract
A method of and an arrangement for adding a chemical to an approach flow system of a fiber web machine by mixing of a retention chemical to a fibrous stock flowing in an approach flow system of a fiber web machine by a mixer (200) between the attenuator (16) and the headbox (18).
Claims17
A method of adding a retention chemical to an approach flow system of a fiber web machine, the method comprising:
- introducing a fibrous stock by a headbox feed pump via an attenuator to a headbox of a fiber web machine, and
- adding the retention chemical to the fibrous stock between the attenuator and the headbox.
A method comprising:
- introducing a fibrous stock by a headbox feed pump via an attenuator to a headbox of a fiber web machine, and
- adding a retention chemical to the fibrous stock between the attenuator and the headbox.
An arrangement for adding a retention chemical to an approach flow system of a fiber web machine, the approach flow system comprising an attenuator, a headbox and a chemical mixer, wherein the chemical mixer is arranged downstream of the attenuator and between the attenuator and the headbox.
Dependencies are inferred from the claim text.