RU2542316C2 - Industrial installation for electrochemical water activation - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: invention relates to installations for activation of liquid water media by electrochemical method and is intended for preparation of two types of water: alkaline and acidic in production conditions. Industrial installation for electrochemical water processing has several reactors, separated in pairs. Each pair of reactors has control cabinet and power electric equipment, system of water supply, collection reservoirs for activated water, pump equipment for its transportation and ventilation system. Each reactor with volume 200 l is made of dielectric material; anode and cathode chambers with electrodes are separated with ion-permeable diaphragm; electrode of anode chamber is made of titanium sheet, rolled in form of 850 mm high cut cylinder with diameter 175-180 mm; electrode of cathode chamber is made of stainless steel in form of 850 mm high cut cylinder with diameter 275-280 mm; and ion-permeable membrane is made of cotton filter fabric. Reactors in pair are switched on to each other with possibility of operating by turns - one in mode of production of electrochemical activated water, and the other - in preparation mode.

EFFECT: increased efficiency of installation operation and obtaining activated water in industrial volume.

4 dwg, 1 tbl

Description

An industrial installation relates to devices for activating liquid aqueous media by the electrochemical method and is intended for preparation under industrial conditions and two types of biologically active water necessary for the technological cycle: catholyte (alkaline water) and anolyte (acidic water).

Alkaline water (catholyte) is a very soft, colorless liquid with an alkaline medium, pH 9-12, has antioxidant activity, higher dissolving ability, increases the efficiency of technological processes. This water, as the target product, is a source of energy, a good biostimulant, and restores the body's immune system. It activates the bioprocesses of a living organism, plants, improves metabolism [1].

Anolyte (acidic water) can create an acidic environment with a given pH value <7, acting as an environmentally friendly and economical substitute for mineral acids in various technological processes, increasing their efficiency. At the same time, it is a powerful antiseptic and preservative, has inhibitory properties. As the target product, anolyte is used to combat microorganisms and fungi in the processing of fruits and vegetables in order to increase their shelf life, medical equipment for its safe use, plant protection, etc. [1].

A device for activating water containing an insignificant amount of mineral salts by electrolysis under the influence of direct electric current in a special two-chamber electrolyzer separated by an ion-conducting diaphragm (V.M. Bakhir. Electrochemical activation. - M .: VNIIIMT, 1992, part 1, p. . 233-237), as a result of which two fractions of water are obtained: alkaline (catholyte) saturated with OH ^- ions (pH 7-12), and acidic (anolyte) saturated with H ⁺ ions (pH 2-7). The essence of this invention is implemented in the device (device) "Melest" (Manufacturer: LLC MVP "Melest", Russia, Ufa, ul. Sh. Rustaveli, 19), intended for home preparation in small volumes of two types of water: catholyte (alkaline water) and anolyte (acidic water). The device (device) consists of a main open container made of food-grade plastic, a removable top cover with electrodes and a power supply, a fabric cup that acts as a diaphragm between the cathode and anode and is inserted into the main container.

A household water activator is also known (see RF patent 2226508. Cl. C02F 1/461, 2004 - prototype), comprising a reactor consisting of a dielectric casing separated by an ion-permeable diaphragm into the anode and cathode chambers, with electrodes and a power supply attached to the housing cover.

The disadvantages of the known devices are the low productivity and uneven volume of activated water in the anode (0.2-0.3 l of anolyte) and cathode (0.6-0.7 l of catholyte) parts of the installation, resulting in a different degree of change in the pH of the anolyte and catholyte, low current strength, which does not allow to obtain a high electric field strength between the electrodes. Due to the small volume of anolyte compared with catholyte, anolyte overheats quickly and begins to boil with overflow into the catholyte compartment. The small thickness of the plastic of the main container leads to the rapid appearance of cracks and the destruction of the material under the influence of an electric field.

The technical result of increasing the efficiency of the proposed device is the production of activated alkaline (catholyte) and acid (anolyte) water in significant volumes, which allows to expand the technological capabilities of its use, as well as reducing the duration of electrolysis through the use of high voltage and high current strength.

To achieve a technical result, an industrial installation for electrochemical water treatment has two pairs of reactors, the casing of each of the reactors is made of dielectric material, the anode and cathode chambers are separated by an ion-permeable diaphragm, each pair of reactors has a control cabinet and power electrical equipment, a water supply system, and collecting tanks for activated water, pumping equipment for its transportation and ventilation system. The dielectric vessel of the reactor has a volume of 200 l (1 in Fig. 1), the electrode of the anode chamber is made of a sheet of titanium folded in the form of a cut cylinder 800-850 mm high and 175-180 mm in diameter (4 in Fig. 1), and the cathode electrode the chamber is made of stainless steel sheet rolled up in the form of a cut cylinder 800-850 mm high and 275-280 mm in diameter (2 in Fig. 1), an ion-permeable diaphragm made of cotton filter cloth (3 in Fig. 1). The distance between the electrodes is 100 mm (6 in Fig. 1). The reactors in pairs are connected to each other with the ability to work in turn - one in the production mode of electrochemically activated water, and the other in preparation for production.

According to the scientific, technical and patent literature, no similar set of features has been found that allows to obtain a technical result that was not previously achieved by known means, which allows us to judge the appropriate level of the proposed proposal.

The proposed technical solution meets the criterion of "industrial applicability", because it is reproducible and available in the conditions of a production workshop and can be used to activate water and produce catholyte (alkaline water) and anolyte (acidic water) with specified pH parameters.

The invention is illustrated in the drawing and photographs, where in FIG. 1 shows a diagram of a reactor for electrochemical water treatment; FIG. 2 is a photograph of the strapping of the installation capacities, in FIG. 3 shows a reactor with electrodes installed in it and an ion-permeable diaphragm, FIG. 4 - two power modules from step-down three-phase transformers 380/60 V, three-phase rectifier blocks, protection and control devices.

An industrial installation for electrochemical water treatment (ECAW) is a complex consisting of ECAW reactors, a control cabinet, power electrical equipment, a water supply system, prefabricated tanks for activated water, pumping equipment for its transportation and a ventilation system (not shown). The installation uses two pairs of reactors. Each reactor for the electrochemical treatment of water (Fig. 1) consists of a dielectric body 1 (200 L plastic container) separated by an ion-permeable diaphragm 3 of cotton filter cloth into an anode and cathode chambers with electrodes: anode 4 is made of a sheet of titanium folded in the form a cut cylinder with a height of 850 mm and a diameter of 180 mm, and the cathode 2 is made of stainless steel sheet folded in the form of a cut cylinder with a height of 850 mm and a diameter of 850 mm. Each pair of reactors is powered by a separate power module. Two power modules consist of step-down three-phase transformers 380/60 V, three-phase rectifier units with 150 A diodes, protection and control devices. The maximum current of the power module is 100 A, the operating one is 30-60 A, the operating voltage is 82 V. Activated water is collected in separate containers - 2 m ³ for catholyte and 1 m ³ for anolyte. The ventilation system is forced, exhaust. Ducts are connected to the covers (5 in Fig. 1) of the reactors and to the highest point in the room for the effective removal of the resulting gases, including hydrogen and chlorine. In each pair, the reactors operate in turn - one produces ECA, the other is prepared, for which the manufactured anolyte and catholyte are pumped out of it into appropriate containers, and then it is filled with fresh tap water.

The installation allows to obtain catholyte (alkaline water) and anolyte (acidic water) with the required pH parameters required for production purposes in the volumes required for the production cycle.

To implement the installation and to obtain catholyte and anolyte in the required volumes for industrial purposes, an electrode-cathode, a membrane-bag made of cotton filter cloth and an anode are successively installed in a standard 200 l plastic container. For the manufacture of the cathode, a stainless steel sheet with a size of 850x850 mm is used, which is rolled up in the form of a cut cylinder with a height of 850 mm and a diameter of 275-280 mm, for the manufacture of the anode, a sheet of stainless steel with a size of 500 × 850 mm is rolled up, which is rolled up in the form of a cut cylinder with a height of 850 mm and a diameter of 175-180 mm, and install these cylinders in a plastic container. The distance between these metal cut cylinders is 100 mm. A membrane is made from a cotton filter cloth in the form of a stable bag with a height of 850 mm and a diameter of 230 mm.

The efficiency of the device is confirmed by the data presented in the table.

Information sources

1. A device for producing catholyte-anolyte "Melest". TU 5156-002-32064510-07. Operation manual, www.melesta.newmail.ru. Appendix No. 1. Instructions for use of alkaline and acidic water. Manufacturer: LLC MVP "Melesta", Russia, Ufa, ul. S. Rustaveli, 19.

Claims (1)

An industrial installation for electrochemical activation of water, consisting of a reactor made of a dielectric casing, separated by an ion-permeable diaphragm into an anode and cathode chambers with electrodes, and a power supply unit, characterized in that it has several reactors separated in pairs, each pair of reactors has a control cabinet and power electrical equipment, water supply system, prefabricated tanks for activated water, pumping equipment for its transportation and ventilation system, dielectric housing RA has a volume of 200 l, while the electrode of the anode chamber is made of a sheet of titanium rolled in the form of a cut cylinder with a height of 850 mm and a diameter of 175-180 mm, the electrode of the cathode chamber is made of a sheet of stainless steel rolled in the form of a cut cylinder with a height of 850 mm and a diameter 275-280 mm, and the ion-permeable diaphragm is made of cotton filter cloth, and the reactors in pairs are connected to each other with the possibility of working in turn - one in the production mode of electrochemical activated water, and the other in the preparation mode.

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