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An electrochemical scale removal device

An electrochemical, scale technology, applied in chemical instruments and methods, descaling and water softening, water/sludge/sewage treatment, etc., can solve problems such as resistance rise, reduction of scale removal ability, and increase of energy consumption

Active Publication Date: 2016-04-20
章明歅 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned cathode scale is deposited to a certain thickness before cleaning, which increases the resistance and increases energy consumption, reducing the descaling ability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Install two electrochemical scale removal devices in the cooling circulating water system in the form of side flow, and the circulating water volume is 1200m 3 / h, using figure 1 There are two sets of electrochemical scale nucleation unit shown, the total processing capacity of this electrochemical scale nucleation unit is 40m 3 / h, the water to be treated at a temperature of 15-35°C enters the tank body from the water inlet of the tank body, the tank body is provided with a diaphragm, and the diaphragm divides the tank body into a cathode chamber and an anode chamber, and the rotating cathode is located at In the cathode chamber, the diameter of the rotating cathode is 500 mm, the length is 800 mm, and the rotational angular velocity of the rotating cathode is 10 rpm; the anode is in the anode chamber, and the rotating cathode, the anode, the aqueous solution in the tank and the electrolysis power supply form a closed current loop; start the electrolysis power supply ...

Embodiment 2

[0073] Install two electrochemical scale removal devices in the cooling circulating water system in the form of side flow, and the circulating water volume is 1150m 3 / h, using figure 2 There are two sets of electrochemical scale nucleation unit shown, the total processing capacity of this electrochemical scale nucleation unit is 40m 3 / h, the water to be treated at a temperature of 20-40°C enters the tank body from the water inlet of the tank body, and the rotating cathode, anode, aqueous solution in the tank body and electrolysis power supply form a closed current loop, and the diameter of the rotating cathode is 500mm, the length of the rotating cathode is 800mm, and the rotational angular velocity of the rotating cathode is 30rpm; start the electrolysis power supply, the current is 40A, and the electrochemical reaction begins to occur near the anode and the rotating cathode; near the anode, water electrolysis produces oxygen and oxygen free radicals, Hydrogen peroxide an...

Embodiment 3

[0080] Four electrochemical scale removal devices are installed in the cooling circulating water system in the form of side flow, and the circulating water volume is 3000m 3 / h, using figure 1 There are four sets of electrochemical scale nucleation unit devices shown, and the total processing capacity of this electrochemical scale nucleation unit is 100m 3 / h, the water to be treated at a temperature of 25°C enters the tank body from the water inlet of the tank body, and the tank body is provided with a diaphragm, which divides the tank body into a cathode chamber and an anode chamber, and the rotating cathode is located in the cathode chamber Among them, the diameter of the rotating cathode is 500mm, the length is 800mm, and the rotational angular velocity of the rotating cathode is 15rpm; the anode is in the anode chamber, and the rotating cathode, the anode, the aqueous solution in the tank and the electrolysis power supply form a closed current loop; start the electrolysis...

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Abstract

The invention provides an electrochemical water scale removal device. The device comprises a water scale crystal nucleus generating unit used for electrochemical water treatment, wherein the water scale crystal nucleus generating unit comprises a tank body, diaphragms, an anode, cathodes and auxiliary electrodes; a water inlet and a drain outlet are formed in the bottom of the tank body; the diaphragms are arranged inside the tank body and divide the tank body into cathode chambers and an anode chamber; the anode is arranged inside the tank body; the cathodes and the auxiliary electrodes are arranged inside the cathode chambers; a catholyte water outlet and an anolyte water outlet are formed in the top end of the tank body. The device has the beneficial effects that with electrochemical operation, water scales can be deposited on the surfaces of the diaphragms and hinder ionic migration through the diaphragms, so that the resistance is increased, the current efficiency is reduced and the diaphragms need to be regenerated; the cathode chambers are emptied, the anolyte is led into the cathode chambers, then the auxiliary electrodes serving as anodes are connected and the anolyte generates chlorine and hydrochloric acid near the auxiliary electrodes, so that the water scales on the surfaces of the diaphragms are completely washed and the diaphragms are regenerated in situ.

Description

technical field [0001] The invention belongs to the field of scale removal devices, in particular to an electrochemical scale removal device. Background technique [0002] As a clean scale and algae control technology, electrochemical technology has been practically applied for many years in the treatment of cooling circulating water. Electrochemical descaling has many advantages: it is environmentally friendly and does not cause environmental pollution; it does not require disposal and dosing of chemicals; it can realize automation and more convenient process control. The main difficulty is that most of the scale is deposited on the surface of the cathode, resulting in an increase in resistance and a decrease in current efficiency. Several cathodic scaling methods currently in use include polarity inversion and ultrasonic cleaning. [0003] The Chinese patent with the application number 200620032114.5 discloses an electrochemical reactor operated with inverted poles. With...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F5/00
CPCC02F5/00C02F2303/22
Inventor 章明歅章俊杰
Owner 章明歅
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