Apparatus and method for separating steam from pulp fibers
AssigneeMetso Paper, Inc.
InventorBaltsar Lundgren
Life of this patent
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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.
Claims8
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 pair of short sides of the elongated feeding compartment, a conduit configured for feeding a mixture of steam and fibers through said inlet, and a conveyor worm arranged axially in the feeding compartment for the feeding of fibers, said conduit comprising a curved conduit section which is curved such that the mixture of steam and fibers during passage in the curved conduit section is separated under the influence of centrifugal forces into a substantially relatively heavy steam-less fraction of fibers in a radially outer layer and into a substantially light fiber-free fraction of steam in a radially inner layer, the curved conduit 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 a conduit 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 conduit comprising a curved conduit section which is curved such that the mixture of steam and fibers during passage in the curved conduit section is brought to separate under the influence of centrifugal forces into a substantially relatively heavy steam-less fraction of fibers in a radially outer layer and into a substantially light fiber-free fraction of steam in a radially inner layer, the curved conduit 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.