Apparatus and method for production of pulp
AssigneeMetso Paper, Inc.
InventorBaltsar Lundgren
Life of this patent
Estimating the term…
Abstract
Apparatus for separating steam from a mixture of steam and fibers is disclosed, comprising an elongated feeding compartment having an inlet and a feeding device for feeding a mixture through the inlet. The feeding device comprises a tubular section which is curved such that the mixture in the tubular section is separated under the influence of centrifugal forces in a heavy steam-less fraction of fibers in a outer layer and in a light fiber-free fraction of steam in a inner layer. The tubular section is arranged in such a way that a heavy fraction of fibers is fed through the inlet peripherally. The separated light fraction of steam is fed against the center of the compartment and removed through an outlet of the apparatus.
Claims13
Apparatus for separating steam from a mixture of steam and fibers, comprising an elongated feeding compartment including a pair of short sides, and having an inlet arranged between the short sides of the elongated feeding compartment and feeding means for feeding a mixture of steam and fibers through said inlet and a conveyor worm arranged axially in the feeding compartment for feeding of fibers, said feeding means comprising a tubular section which is curved such that the mixture of steam and fibers during passage in the tubular section is separated under the influence of centrifugal forces in a substantially relatively heavy steam-less fraction of fibers in a radially outer layer and in a substantially light fibre-free fraction of steam in a radially inner layer, the tubular section is arranged in such a way that a heavy fraction of fibers is fed through the inlet peripherally into the elongated feeding compartment of the apparatus, where the separated fraction of fibers are conveyed further by means of the conveyer worm, while the separated light fraction of steam is fed through the inlet against the center of the elongated feeding compartment and removed through an outlet of the apparatus.
A method for feeding a mixture of steam and fibers to an elongated feeding compartment having a pair of short sides for apparatus for separating steam from a mixture of steam and fibers, where the mixture of steam and fibers are fed by means of feeding means through an inlet arranged between the short sides of the elongated feeding compartment, and where the fibers are conveyed further by means of a conveyor worm arranged axially in the feeding compartment, the feeding means comprising a tubular section which is curved, whereby the mixture of steam and fibers during passage in the tubular section is brought to separate under the influence of centrifugal forces in a substantially relatively heavy steam-less fraction of fibers in a radially outer layer and in a substantially light fiber-free fraction of steam in a radially inner layer, the tubular section is arranged in such a way that heavy fraction of fibers is fed through the inlet peripherally into the elongated feeding compartment of the apparatus, where the separated fraction of fibers are conveyed further by means of the conveyer worm, while the separated light fraction of steam is fed through the inlet against the center of the elongated feeding compartment and removed through an outlet of the apparatus.
Dependencies are inferred from the claim text.