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US 4,519,959 AGranted
Gas-liquid contacting apparatus
OwnerTatsuro Takeuchi, Shohei Yoshida +1inventors
InventorsTatsuro Takeuchi, Shohei Yoshida, Kazuhiro Kawai
Life of this patent
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Abstract
A gas-liquid contacting apparatus is constituted by an upright vessel, at least one perforated gas distributor for supplying a gaseous medium into a liquid medium within the vessel, a plate-like rotary disintegrator positioned within the vessel and above the gas distributor for disintegrating bubbles of the gaseous medium into fine bubbles, and a drive shaft concentrically extending through the vessel for the support of the rotary disintegrator.
Claims20
A gas-liquid contacting apparatus which comprises, in combination:
- a generally cylindrical upright vessel for accommodating a quantity of liquid medium to be agitated by the action of bubbles of gaseous medium moving upwards within the vessel;
- at least one perforated distributor in said vessel for supplying the gaseous medium under pressure into the vessel so as to disperse it into the liquid medium in the form of bubbles;
- at least one generally disc-shaped rotary disintegrator rotatably mounted in said vessel immediately above said distributor for rotation in a plane perpendicular to the longitudinal axis of said vessel and concentric with the inner peripheral surface of said vessel and having a diameter for defining an annular clearance between the periphery of said disintegrator and the inner peripheral surface of said vessel, said disintegrator having a flat under surface facing the bottom of said vessel for, during the rotation of said disintegrator, causing bubbles of the gaseous medium emerging from said distributor to form a vortex below the flat under surface of said disintegrator, said distributor having a plurality of apertures therein in an annular area around the outer peripheral part of said disintegrator, the radial dimension of said annular area being less than half the radius of said disintegrator, and each of said apertures extending completely through the thickness of said disintegrator from said flat under surface to the upper surface thereof and being defined by peripheral edges of said disintegrator around said apertures, whereby all the bubbles from said vortex pass upwards through the apertures and are sheared by the peripheral edges of said disintegrator for disintegrating the bubbles into fine bubbles;
- a drive shaft extending coaxially into said vessel and having one end positioned exteriorly of said vessel and having said disintegrator mounted on the other end for rotation together with said shaft;
- and
- a drive mechanism connected to said one end of said drive shaft.
3 more elements
A gas-liquid contacting apparatus which comprises, in combination:
- a generally cylindrical upright vessel for accomodating a quantity of liquid medium to be agitated by the action of bubbles of gaseous medium moving upwards within the vessel;
- at least one perforated distributor in said vessel for supplying the gaseous medium under pressure into the vessel so as to disperse it into the liquid medium in the form of bubbles;
- at least one generally disc-shaped rotary disintegrator rotatably mounted in said vessel immediately above said distributor for rotation in a plane perpendicular to the longitudinal axis of said vessel and concentric with the inner peripheral surface of said vessel and having a diameter for defining an annular clearance between the periphery of said disintegrator and the inner peripheral surface of said vessel, said disintegrator having a flat under surface facing the bottom of said vessel for, during the rotation of said disintegrator, causing bubbles of the gaseous medium emerging from said distributor to form a vortex below the flat under surface of said disintegrator, said distributor having a plurality of apertures therein in an annular area around the outer peripheral part of said disintegrator, the radial dimension of said annular area being less than half the radius of said disintegrator, and each of said apertures extending completely through the thickness of said disintegrator from said flat under surface to the upper surface thereof and being defined by peripheral edges of said disintegrator around said apertures, whereby all the bubbles from said vortex pass upwards through the apertures and are sheared by the peripheral edges of said disintegrator for disintegrating the bubbles into fine bubbles;
- a drive shaft extending coaxially into said vessel and having one end positioned exteriorly of said vessel and having said disintegrator mounted on the other end for rotation together with said shaft;
- a drive mechanism connected to said one end of said drive shaft;
- a draft tube mounted in said vessel coaxially thereof and above said disintegrator;
- and
- at least one rotary stirrer cooperable with said draft tube for producing a circulation of the flow of liquid medium within said vessel through the interior of said draft tube and then through the space between said draft tube and the inner peripheral surface of said vessel by the rotation of said stirrer.
5 more elements
Dependencies are inferred from the claim text.