RU18533U1 - INSTALLATION OF ELECTROCHEMICAL DECREASE OF ACTIVE WATER REACTION - Google Patents

Abstract

Installation of electrochemical reduction of the active reaction of water, consisting of a housing in which a working chamber placed flat electrodes, water supply and drain pipes, characterized in that the installation is additionally equipped with an auxiliary chamber located behind the working chamber, the flat electrodes are solid and installed with an interelectrode gap of 5 -7 mm, moreover, the anode material is graphite, the cathode is stainless steel.

Description

INSTALLATION OF ELECTROCHEMICAL ION DEPRESSION ACTIVE

WATER REACTIONS

The utility model relates to installations of chemical technology and can be used for electrochemical neutralization of alkaline waters or stabilization treatment of natural waters.

A known device is an electrolyzer for water treatment A.S. No. 1597344 C 02 F 1/46, 1990. Water is processed in the electrolyzer with electrodes located coaxially and made so that the areas of the external and internal electrodes are connected by the ratio of 10 S ext. / S int. 10. Need for application

platinum and oxide-ruthenium electrodes increases the cost of installation. The applied voltage (100 - 110 V) is a danger of electric shock. In addition, the energy consumption when changing the active reaction (pH) of water per unit is 20 kWh / m.

These disadvantages are deprived of the installation of electrochemical regulation of the active reaction of water A.S. No. 1724593 C 02 F 1/46, 1992. The installation consists of a housing divided by a diaphragm into the anode and cathode chambers. A perforated anode and cathode are pressed to the diaphragm on both sides. Scrapers are located in the holes, which are in contact with the surface of the diaphragm, the electrodes are installed with the possibility of reciprocating mixing along the diaphragm. At the same time, the scrapers count off the washout layer of electrolysis products and sediment from part of the diaphragm surface. The main disadvantages of this design are high power consumption, short uptime due to the use of the diaphragm, the complexity of the design and its maintenance.

The task of the noisy model is to reduce energy consumption, reduce the cost and simplify the design.

The problem is solved in that an auxiliary chamber with a locking device, a working chamber in which flat electrodes made of graphite and stainless steel are placed, are located in the installation case. The working chamber is equipped with nozzles for supplying and draining water. The interelectrode gap is 5-7 mm.

The proposed installation of the electrochemical lowering of the pH is illustrated in the drawing.

In FIG. 1 - general view of the installation; in FIG. 2 is a diagram of parallel water treatment; in FIG. 3 is a diagram of sequential water treatment.

and - 1 3 g 64MKI with 02 F 1/46

systems of water supply and discharge pipes 6 - 13, shut-off device 14, d interelectrode gap.

Installation works as follows.

Voltage is applied to the electrodes and fluid flows between the electrodes. Depending on the initial pH value and the set water flow rate, the following treatment schemes are used:

1. Parallel processing (Figure 2) - is used at low pH and high water consumption. Water is supplied through pipes 6 and 7 into the working chamber 2 in two parallel streams, where it is processed. Drainage is carried out through nozzles 12 and 13 into the auxiliary chamber 3, where the electrochemical properties of the water are stabilized after treatment. Then, the water through the locking device 14 is supplied to the consumer.

2. Sequential processing (Fig.Z) - used in the case of high RP values and low water consumption. Water is supplied through pipe 7 to the working chamber 2, where processing takes place in one interelectrode gap of the working chamber 2. After treatment, water is discharged through the pipe 13 into the auxiliary chamber 3. Through the pipe 10 it enters the other interelectrode gap of the working chamber 2 for further processing. The locking device 14 is closed. Through pipe 9, water enters the consumer.

At high water flow rates and high pH values, it is possible to use a combination of parallel and serial processing schemes.

Example.

A series of experiments was performed on this setup. A parallel processing scheme was used, as the initial RP value did not exceed 12.1, and the water flow rate was about 50-100 ml / min (the volume of the working chamber was 250 ml). The results are presented in the table.

Experienced data prove:

The proposed installation is simple both in terms of design and operation. The specific energy consumption is minimal with an interelectrode gap of d 5-7 mm. At d 5 mm, energy consumption decreases slightly, but difficulties with observing the interelectrode distance increase; at d 7 mm, energy consumption increases by more than 1.5 times. The high energy consumption of the prototype is due to the sintering of the pores of the diaphragm by electrolysis products.

Pachilnik f / L.A. Lutovinova

Claims (1)

Installation of electrochemical reduction of the active reaction of water, consisting of a housing in which a working chamber placed flat electrodes, water supply and drain pipes, characterized in that the installation is additionally equipped with an auxiliary chamber located behind the working chamber, the flat electrodes are solid and installed with an interelectrode gap of 5 -7 mm, moreover, the anode material is graphite, the cathode is stainless steel.