SU1459693A1 - Aerocentrifuge for separating suspensions - Google Patents

Description

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This invention relates to a slurry separation technique and can be used in the chemical, food and other related industries, in particular, for the separation of polymeric materials.

The aim of the invention is to increase the efficiency of the separation process by improving the interaction of the gas stream with the separable suspension.

FIG. 1 shows aerocentrifuge, incision; in fig. 2 is a junction of perforated cylinders with decreasing diameter.

The aerocentrifuge has a housing 1, inside which a perforated cylinder 2 is installed along its vertical axis, which can be made stepped with a decrease in diameter along the flow (Fig. 2), while the steps of cylinder 2 are connected with a conical adapter 3. Inside the case 1 a horizontal partition is installed 4, which at one end is attached to the housing and the second through the insert 5 to the cylinder 2. Inside the perforated cylinder 2, with a gap to the wall at the level of the partition, a blade swirler 6 is mounted. The suspension is located along the axis of the perforated cylinder 2, while it is lowered at the level of the beginning of perforation and provided with a conical baffle 8 installed under the nozzle 7. The gas is supplied through the tangential nozzle 9, the liquid is removed through the nozzles 10 and 11 the upper cover 13 and through the fitting 14. The output of the solid phase is produced through the fitting 15, fixed in the bottom cover 16.

The separation of the suspension in the proposed aerocentrifuge is carried out as follows.

The gas through the tangential choke 9 is fed into the aerocentrifuge and acquires a twisted motion. A vacuum is formed in the center of the swirling gas stream. Through fitting 7, located along the axis of the perforated cylinder 2, a suspension is fed. Since the suspension supply nozzle 7 is located along the axis of the perforated cylinder 2, a vacuum is formed in it, which makes it possible to feed the suspension into aerocentrifuge with a different ratio of liquid densities.

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n solid phases, in particular, suspensions, the density of the solid phase which is less than the density of the liquid.

Pass through fitting 7, slurry,

the separator is fed to the bump 8, made in the form of a cone, where it is distributed around the perimeter of the perforated cylinder 2.

Since the slurry feed connection 7 is located along the axis of the perforated cylinder 2 and is lowered from above to the level of the start of perforation, the suspension immediately hits the perforated surface and the impact force is also used for separation. The gas flow is more efficiently used, which leads to a decrease in the moisture content of the finished product. The suspension, which has fallen on the inner surface of the perforated cylinder, is picked up by a swirling gas flow and acquires a rotational motion. Due to centrifugal force,

0 formed during the rotation of the flow, the liquid passes through the perforations and collects in the housing 1 on the partition 4, from where it is discharged through the fitting 10. Together with the liquid through the perforations comes out

5 and part of the gas. To release the gas, holes 12 are made in the upper lid 13. The apertures are offset to the axis of the apparatus to reduce the entrainment of the liquid phase. Then, the gas and the partially separated suspension fall on a paddle swirler 6, where they again

0 acquire a twisted movement and there is a final separation of the liquid from the solid phase. The fluid is collected on the bottom cap 16 and discharged from the Aerocentrifuge through the fitting I. A part of the gas flow that has passed through the perforation of the cylinder 5, is discharged from the housing 1 through the fitting 14.

The solid phase, completely separated from the liquid, is removed from the aerocentrifuge with the remaining gas through the nozzle 15, secured to the bottom cover 16.

A part of the gas flow is lost along the height of the perforated cylinder 2. In order to maintain a high gas flow rate in each subsequent stage of the cylinder 2 and, accordingly,

5, the force of the separation process, each subsequent step along the flow path, may have a smaller diameter and be interconnected by means of a conical adapter 3.

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Claims (2)

1. AEROCENTRIFUGA FOR SUSPENSION SEPARATION, comprising a housing with gas supply fittings with a swirling element and suspension, removal of solid and liquid phases, a perforated cylinder mounted inside the housing along its vertical axis, characterized in that, in order to increase the efficiency of the separation process, it is equipped a horizontal dividing wall installed between the housing and the cylinder, a blade swirler installed with an annular gap inside the perforated cylinder at the level of the baffle, and a conical outlet an oynik installed in the perforated cylinder under the suspension feed fitting located along the axis of the perforated cylinder. 2. Aerocentrifuge according to π. 1, characterized in that the perforated cylinder is made stepped with decreasing diameter along the flow and is equipped with a conical adapter between the steps. | Suspension / 15 g Liquid Solid fi d. 1 j Liquid