RU1787511C - Device for dehydrating moisturized materials - Google Patents

Abstract

The device comprises an anode housing, nozzles for supplying and removing the material to be processed, and a cathode located inside the housing coaxially with it. The housing is formed of two cones connected by bases in a horizontal plane. The cathode is made in a similar way and through a dielectric gasket and the valve is connected to the receiver. The upper part of the cathode is reticulated. 1 ill.

Description

SUBSTANCE: invention relates to devices for dewatering high-moisture materials using electroosmosis and can be used for dewatering materials with a high moisture content.

Also known is an electroosmotic dehydrator of pasty material, selected as a prototype, consisting of a cylindrical body, which is an anode, a pipe for supplying and discharging the processed material and located inside the cathode, which is made in the form of a screw with a hollow perforated shaft. Such a construction, in comparison with the aforementioned dehydrator, makes it possible to increase the intensity of the process due to mechanical action on the material. However, the drawback of the dehydrator is that the energy consumption remains significant, since the energy is spent apart from the dehydration process on the drive, in addition, the process is not intensified enough, since in the design the working area of the electroosmosis process is small and the intensity decreases accordingly.

The aim of the invention is to intensify the dehydration process and reduce energy costs.

This goal is achieved by the fact that in the inventive device, comprising, as its prototype, a housing that is an anode, nozzles for supplying and discharging the processed material, and a cathode located inside the housing, in contrast to it: the housing is formed of two cones connected bases in a horizontal plane, and the cathode is made in a similar manner and through a dielectric gasket and a valve is connected to the receiver, the upper part of the cathode being mesh.

The construction of the anode in the form of two cones connected by bases and a similarly shaped cathode inside it, the upper cone of the cathode being mesh, allows you to combine the direction of movement of moisture under the influence of electroosmosis and gravity, and thereby obtain a positive moisture content gradient. In addition, the creation of a vacuum in a pulsating mode inside the chamber allows you to create a pressure gradient, the direction

with

VI

00 vj

Joint venture

len from the anode to the cathode. When the vacuum builds up in the layers near the mesh cathode, liquid boils up, respectively, evaporation and a decrease in the temperature of the layers, i.e. the temperatures near the cathode and the anode are different, and near the anode is higher and the temperature gradient is directed to the cathode.

.: Thus, only the totality of the difference W (x signs) allows us to get all three gradients positive and thereby intensify the dehydration process and reduce energy costs. In addition, this totality was not found in the known technical solutions, which allows us to conclude that criterion of significant differences.

The drawing shows the claimed device, a longitudinal section.

The device consists of a housing 1 formed of two cones connected by bases in the horizontal plane and being an anode and made in a similar way to the cathode 2, connected to the receiver 3 through a dielectric gasket 4 and valve 5. The device also contains nozzles 6, 7 in the form lock chambers for loading and unloading the processed material.

The device operates as follows.

The processed material through the pipe 6 is fed into the capacity of the anode 1 and under the influence of its own gravity

moves between the anode and cathode to the nozzle 7. Under the action of electroosmosis and pulsed vacuum, liquid from the material through the mesh part of the cathode 2

5 is pumped into the receiver 3. The dehydrated material is discharged through the pipe 7.

An example of a specific bird manure dehydrator. Raw materials with an initial moisture content of 76% and final

10 humidity 42%. The dehydrator with a capacity of 1 t / h on the source material has the following parameters: dimensions h 1.4 m, b 1.2 m, the volume of the working chamber (between the cathode and cathode) VK-.0.076 m3,

15 receiver volume Vp 1,5 m. The rate of movement of material in chamber V is 16.5 kg / min. Depth of evacuation (25-30} x / 102Pa.

Claims (1)

The claims 20 A device for dewatering wet materials, including a housing that is an anode, a cathode located inside and coaxially with the housing, nozzles for 25 inlet and outlet of the processed material, characterized in that, in order to intensify the dewatering process and reduce energy consumption, the casing is made in the form of two cones connected by bases 30 in a horizontal plane, the cathode is made in the shape of the casing and mesh in the upper part, is connected through a dielectric gasket and valve with receiver.