SU59335A1 - Continuous diffusion device - Google Patents

Description

Continuous diffusion devices are known that are used primarily in the sugar industry, made in the form of a vertical vessel with a counter-current moving from top to bottom the processed material, for example, beet chips and a forcibly extracted extractable liquid, such as hot water.

The process material is fed into the apparatus and the leached material is unloaded continuously using various loading and unloading devices, for example, shchyok.

The proposed device differs from those known in that while maintaining the countercurrent of the material being processed and the extracting liquid, the latter in each section of the apparatus has a movement in the direction perpendicular to the direction of movement of the leached material.

In FIG. 1 shows a schematic side view of the device; FIG. 2 is a side view of a separate (partially cut) section of the device; FIG. 3 - section view from the front.

The proposed device for continuous diffusion is made in the form

a vertical column consisting of sections 1 arranged one above the other with a loading hopper 3 and a discharge screw 5.

Each section 1 (FIGS. 2 and 3) on opposite sides is provided with nets 2, closed with clamps 9 with nozzles 8 intended for inlet and outlet of extracting liquid. The cross section of the sections of the apparatus can be varied, preferably rectangular.

The processed material, which the hopper 3 must always be completely filled, moves under the force of gravity from top to bottom in the apparatus and during this movement is leached with extracting liquid, which flows through the screw 5 into the lower section of the apparatus and passes in the direction perpendicular to the movement of solid body. Fluid enters the next section from the lower section through the pipeline parallel to the column, etc. The fluid movement in each section is perpendicular to the motion of the solid body is reasonable by the following considerations. If the specific gravity of the solid and the fluid are close (for example, beet chips and water).

Vo, the known velocity of the fluid movement is that a solid body rises and goes down with difficulty, therefore it is necessary to create a forced motion for a solid body.

When fluid movement with respect to a solid is received, this is eliminated.

The possibility of fluid movement in pipelines perpendicular to the diffusion column, and at the same time parallel to it, is due to the fact that resistance to upward movement of fluid along the column itself when loaded with a solid will have more resistance when the direction of fluid motion is received.

For lifting and heating the fluid, pumps 6 and heaters 7 are installed, the number of which

determined by process conditions.

Preheating of the material (chips) may be carried out in the hopper 3 by supplying steam or heated saturated liquid (juice).

The subject matter of the invention.

A column-type device for continuous diffusion with a counterflow of a liquid and a top-down moving material, characterized in that IT is made of separate sections 1 with mesh side walls 2 intended for inlet and outlet of an extracting liquid, with the purpose of carrying out the movement of the liquid in each section of the apparatus perpendicularly to the movement of the material.

FIG.2

9figs

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