Electrochemical water scale removal device

An electrochemical and scaling technology, applied in chemical instruments and methods, descaling and water softening, water/sludge/sewage treatment, etc., can solve problems such as increased energy consumption, reduced descaling ability, and increased resistance

Active Publication Date: 2015-01-07
银海洁环保科技(北京)有限公司
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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 will increase the resistance, increase energy consumption, and reduce the descaling ability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] 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

[0079] 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 30°C enters the tank from the water inlet of the tank, and the rotating cathode, the anode, the aqueous solution in the tank and the electrolysis power supply form a closed current loop. The diameter of the rotating cathode is 500mm. The length of the cathode is 800mm, and the rotation angular velocity of the rotating cathode is 30rpm; start the electrolysis power supply, the current size 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, which react with water and Dissolved...

Embodiment 3

[0086] 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, which comprises a water scale crystal nucleus generation unit for electrochemical water treatment, a rotating cathode and an anode, wherein the water scale crystal nucleus generation unit comprises a tank body; a water inlet and a sewage discharge outlet are formed in the bottom of the tank body; a water outlet is formed in the top end of the tank body; the rotating cathode is arranged in the tank body; the anode is arranged in the tank body. According to the device, an aqueous solution is electrolyzed to generate OH- in the vicinity of the rotating cathode, an alkaline solution with a pH value of 14 is obtained in an interface layer in the vicinity of the rotating cathode, water scale crystal nucleuses formed on the surface of the rotating cathode and in the interface layer in an electrochemical process are diffused into the solution by virtue of the rotating cathode, and an ultra-large crystal growth surface and crystal active growth points are provided for scaling ions in the solution by virtue of a great number of crystal nucleuses; the surface areas of a great number of tiny crystal nucleuses are multiple times larger than that of the rotating cathode, so that the crystallization and precipitation probability of the scaling ions is greatly improved, and the scale removal efficiency is also improved.

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 control technology, electrochemical technology has been practically applied for many years in cooling circulating water treatment. 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. [0003] Currently, several scaling methods in use include polarity inversion and ultrasonic cleaning. For example, the Chinese patent document with the application number 200620032114.5 discloses an electrochemical reactor operated with inverted electrodes. Du...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/00
CPCC02F5/00C02F2303/22
Inventor 章明歅章俊杰
Owner 银海洁环保科技(北京)有限公司
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