SU1225594A1 - Arrangement for distributing suspension to ducts of inclined thin-layer settler - Google Patents

Description

one

The invention relates to the field of separation of a suspension under the influence of gravitational forces and can be used in the chemical, petrochemical and other industries.

The purpose of the invention is to reduce the range of stabilization of input flows in Kana. ie.

On s, lb. 1 shows a device for distributing a suspension in an inclined thin-layer settling tank; lia fi1. 2 - section L-A on. one.

Device d .; distributing the slurry at the inlet to the thin-layer inclined clarifier contains a feed manifold 1 with nozzles 2 for feeding the initial slurry. The nozzles 2 are located symmetrically with respect to the axis of the channel 3 formed by two adjacent shelves 4 of a thin-layer settler. In addition, the nozzles 2 are mounted on the collector 1 iod by angles decreasing with distance from the axis of symmetry. The number of nozzles 2 per one collector in one meter of thin-layer channel 3 is determined from the ratio

one

p (30-60). ,

Sh

de P - 1P1e distance between two adjacent

shelves;

W is the iris of the inter-shelf space, equal to the width of the thin-layer module

If (, then the number of nozzles 2 in the channel at any angles of inclination to the horizon plane is not enough to ensure optimal stabilization zone length. At the same time, as in the known suspension distribution devices in thin-layer settling tanks, due to the presence of dead zones and reverse currents, the

the efficiency of the use of the inter-shelf space, and, consequently, the capacity of the sump.

If (} -, then in the thin-layer channel 3, due to the mixing of the flare IOTOKOB, an equal distribution zone appears, which gradually passes into the stabilization zone.

The number m of collectors 1 io P1irine thin-layer module is determined from the ratio

m (10-25) 4.

If a . then, due to the insufficient degree of interaction of torch-shaped st. uypy streams emanating from the pipes 2 of two adjacent collectors 1, the uniformity of the stabilization zone length across the channel width is disturbed, which violates the separation efficiency in the entire thin-layer module.

If, then, due to the high degree of interaction of these flows, equalization of the velocity field is achieved, but the length of the stabilization zones in the corresponding channel increases, and, thus, the separation efficiency decreases.

The device works in the following way.

The initial suspension enters the supply and collectors 1 and is distributed through the nozzles 2 through the channels 3 formed by the shelves 4. As the initial suspension enters the interpolation area, the stabilization zone is reduced at different angles and the stabilized laminar flow is established more quickly. separation of the suspension is effective.

- ..

Claims (1)

DEVICE FOR DISTRIBUTING SUSPENSION TO CHANNELS OF AN INCLINED THIN-LAYER STOP, including a feed collector with nozzles for supplying the initial suspension, characterized in that, in order to reduce the length of the stabilization zones of the input flows in the channel, the nozzles of the feed collector are symmetrically relative to the axis of the channels at least decreasing angles decreasing in measure distance from the axis of symmetry. Figure 1