RU165109U1 - DEVICE FOR DEMINERALIZATION OF MILK SERUM - Google Patents

Abstract

1. A device for demineralization of whey, containing a flow channel in which the electrodes are located, characterized in that the electrodes are coated with a non-polar dielectric layer and are electrically isolated, and in the outlet area in the flow channel there are partitions along its side walls and outlet pipes for draining the ion concentrate salts. 2. The device according to claim 1, characterized in that the electrodes are located inside the side walls of the flow channel. The device according to claim 1, characterized in that it has several flow channels arranged in parallel. The device according to claim 3, characterized in that each of the electrodes, except the outermost electrodes in the side flow channels, is common to two adjacent flow channels and is located in the wall separating them. The device according to claim 4, characterized in that the poles of the electrodes alternate, and the number of flow channels is selected so that the poles of the outermost electrodes in the side channels are the same.

Description

The utility model relates to the field of the dairy industry, in particular to whey desalination devices in the manufacture of food products.

A device for electrical demineralization is known (JP Patent 3727586, IPC B01D 61/42, C02F 1/469, 08/08/2003), in which cation-selective and anion-selective membranes are arranged so that they form concentration chambers and series-connected demineralization chambers, as well as a chamber containing the anode and a chamber containing a cathode. Processed water in a flow mode is passed through mineralization chambers. After the primary treatment of the water, the concentrate from the cell containing the cathode is fed into the first of the series-connected demineralization chambers and thus the water is effectively treated, since this concentrate has alkaline properties.

An electric flow demineralizer device is also known (Patent Application 2004188258 US IPC B01D 61/44, September 30, 2004) comprising an electric deionizing chamber having a plurality of compartments separated by cation-selective and anion-selective membranes mounted between the anode and cathode. The anion-deionizing compartment is bounded by cation-selective membranes and placed on the anode side of the water separation chamber, and the cation-deionizing compartment is bounded by cation-selective membranes and placed on the cathode side of the water separation chamber.

Closest to the proposed device is an electrodialyzer (Grebenyuk, V.D. Electrodialysis / V.D. Grebenyuk. - Kiev: Technique, 1976.) having a flow channel in which the electrodes are located, ion-selective membranes are located between the electrodes, and the electrode chambers combined with concentration chambers of recoverable impurities, and solutions of demineralized water and concentrate are discharged using tubes.

The disadvantages of the known electrodialyzers are the short operational period of the ion-selective membranes, the high energy and operating costs, as well as the heating of the processed substance and the possibility of undesired chemical reactions in it due to the direct passage of electric current through it.

The technical result, which the proposed utility model is aimed at, is to create an economical device for processing whey, ensuring its demineralization in the stream to specified parameters without heating and undesirable chemical changes.

The technical result is achieved by the fact that the whey is demineralized in an electric field created between electrically isolated electrodes when a high voltage of 1000 V is applied to them. Electric current does not flow through the whey.

Description of illustrations:

FIG. 1 - Device for demineralization of whey with one flow channel.

FIG. 2 - Device for demineralization of whey with several flow channels placed in parallel.

A device for demineralization of whey (Fig. 1) contains at least one flow channel 1, made in the form of a parallelepiped with input 2 and output 3, for example, from glass or inert plastic. On the side walls 4 and 5 of the flow channel 1 or inside the side walls 4 and 5 there are electrodes 6, covered with a layer of non-polar dielectric 7 and electrically isolated, and in the exit region 3 of the flow channel 1 there are partitions 8 and 9 along its side walls and exhaust pipes 10 and 11 for removal of the salt ion concentrate.

In the case of using several flow channels 1 arranged in parallel (Fig. 2), each of the electrodes 6, except for the extreme electrodes 6 in the side flow channels 1, is common to two adjacent flow channels 1 and is located in the wall separating them. In this case, the poles of the electrodes 6 alternate, and the number of flow channels 1 can be selected so that the poles of the extreme electrodes 6 in the side channels 1 are the same and can be connected to ground to increase the electrical safety of the device. In addition, for adjacent flow channels 1, common outlet pipes 12 and 13 are made, located near each of the common electrodes 6 and connected to common pipelines 14 and 15, separately for the flow from electrodes 6 with positive polarity and for the flow from electrodes 6 with negative polarity .

The principle of operation of the device for demineralization of whey is as follows.

Salt whey through inlet 2 enters the flow channel 1 (laminar flow). The electrodes 6 connected to the opposite poles of the high voltage source provide a constant electric field that penetrates the whey stream in the flow channel 1, while salts in the form of ions move as the flow moves under the influence of the electric field to the side walls 4 and 5 of the flow channel 1. Thus, in the near-wall areas, salt ion concentrates are formed, which, through the baffles 8 and 9, are isolated from the common desalted flow and exit through the outlet pipes 10 and 11 (or common outlet nozzles 12 and 13 in the case of parallel placement of more than one channel 1). The demineralized stream through outlet 3 enters a tank for further processing or another similar device for deeper demineralization or filtration.

The proposed device has a simple design, meets the highest environmental and sanitary requirements, has low energy consumption and can be used for preliminary demineralization of salted whey before its filtration or reverse osmosis. Moreover, in the process of subsequent filtration of pre-desalinated whey, the life of membrane filters increases by 5-7 times.

Using a series of serially installed devices for the demineralization of whey, it is possible to ensure its reagent-free desalination to the required parameters in a simple and economical way.

Claims (5)

1. A device for demineralization of whey, containing a flow channel in which the electrodes are located, characterized in that the electrodes are coated with a non-polar dielectric layer and electrically isolated, and in the outlet area in the flow channel there are partitions along its side walls and outlet pipes for draining the ion concentrate salts. 2. The device according to p. 1, characterized in that the electrodes are located inside the side walls of the flow channel. 3. The device according to p. 1, characterized in that it has several flow channels located in parallel. 4. The device according to p. 3, characterized in that each of the electrodes, except the extreme electrodes in the side flow channels, is common to two adjacent flow channels and is located in the wall separating them. 5. The device according to claim 4, characterized in that the poles of the electrodes alternate, and the number of flow channels is selected in such a way that the poles of the extreme electrodes in the side channels are the same.

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