Method and apparatus for treating mixtures of liquids and solids
AssigneeLean Pulp Oy
InventorMatias Titoff
Life of this patent
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Abstract
According to an example aspect of the present invention, there is provided. an apparatus and a method for treating mixtures of liquids and solids. The apparatus comprises a casing and a rotor mounted inside the casing and having an inner volume delineated by an outer surface. The outer surface is provided with flow connections to the inner volume and configured to be rotated within the casing. The casing and the rotor are set in a vertical position.
Claims17
An apparatus for treating a mixture of one or more liquids and one or more solids, the apparatus comprising:
- a casing, and
- a rotor mounted inside the casing and having an inner volume delineated by an outer surface provided with flow connections to the inner volume and configured to be rotated within the casing,
- wherein:
- the casing and the rotor are set in a vertical position, the casing comprises casing modules and the rotor comprises rotor modules, the lengths of the casing modules and the rotor modules correspond with each other, the rotor modules are configured as straight cylinders, and the casing modules have an inner wall formed as a cut cone that tapers in the direction of lower pressure.
A method for treating a mixture of one or more liquids and one or more solids, comprising:
- feeding said mixture inside a vertical casing,
- rotating a vertical rotor having a perforated outer surface within the casing,
- removing liquid from the mixture through the rotor, and
- removing a fraction comprising solids from the casing,
- wherein the casing comprises casing modules and the rotor comprises rotor modules, the lengths of the casing modules and the rotor modules correspond with each other, the rotor modules are configured as straight cylinders, and the casing modules have an inner wall formed as a cut cone that tapers in the direction of lower pressure.
An apparatus for treating mixtures of liquids and solids, comprising:
- a casing having an inner wall, and
- a rotor mounted inside the casing and having an inner volume delineated by an outer surface provided with flow connections to the inner volume and configured to be rotated within the casing, wherein the casing and the rotor are set in a vertical position,
- an inlet configured for feeding the mixture to be treated into the casing at a first pressure,
- a first outlet configured for removing liquid from the mixture to be treated from the inner volume of the rotor at a pressure lower than the first pressure,
- a second outlet configured for removing a fraction comprising solids at a pressure lower than the first pressure, and
- at least one wash filtrate inlet at a distance from the inlet configured for feeding the mixture to be treated, and for pushing wash filtrate through the mixture to be treated from the inner wall of the casing and displacing liquid in the mixture to be treated and pushing it to a volume formed inside the rotor,
- wherein the casing comprises casing modules and the rotor comprises rotor modules, the lengths of the casing modules and the rotor modules correspond with each other, the rotor modules are configured as straight cylinders, and the casing modules have an inner wall formed as a cut cone that tapers in the direction of lower pressure.
Dependencies are inferred from the claim text.