Water anti-scaling method

Abstract

The invention discloses an anti-scaling method for water, which comprises the steps of heating water and performing ultrasonic treatment, namely adding a piezoelectric material capable of generating an electret under the stimulation of ultrasonic waves into the water. The piezoelectric material is PVDF, PTFE or PP. The piezoelectric material capable of generating the electret under the stimulation of the ultrasonic waves can be matched with the ultrasonic waves, when the pressure of the ultrasonic waves is larger than 0.1 N / cm < 2 >, the piezoelectric material coating on the surface of the stainless steel heat exchange medium can be stimulated, the piezoelectric material coating is polarized to generate the electret, and the heat exchange efficiency is improved. The high-frequency ultrasonic pressure waves continuously stimulate the piezoelectric material coating electret to generate a rapidly alternating internal electric field, so that water scale is prevented from being gathered on the medium surface of the heat exchange tube during heating; meanwhile, scale in the water can be crystallized through heating, the descaling effect is achieved through subsequent filtering, the hardness of the water body is effectively reduced, and the capacity of removing the hardness in the water can reach 95% through the method. Scale is not adhered to a heat exchange tube medium, the continuous working time of the pool boiler is prolonged, the energy consumption is reduced, and the efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of water descaling, in particular to a new water anti-scaling method. Background technique [0002] According to the statistics of relevant professionals in the world, the annual economic loss caused by scale in the hot water field accounts for about 0.25% of GDP. In my country, although there is a lack of specific statistics, experts generally estimate that it should far exceed the world average. Even if calculated at 0.25%, the economic loss of energy caused by scaling exceeds 200 billion yuan. Appropriate scale prevention and treatment of hot water products by project technology can improve thermal efficiency by 20%-40%; increase equipment service life by 1-2 times; reduce equipment maintenance rate by 20%-30% and save a lot of energy consumption. The chemical properties of scale are stable, which affects the heat exchange rate and energy consumption. When the thickness of the scale is 1.5mm, it will c...

AI Technical Summary

Problems solved by technology

However, the ion exchange resin method needs to use a large amount of salt for ion exchange, and the discharge of high-concentration brine will bring potential secondary pollution; the desalination membrane method will produce a large amount of concentrated wastewater. On the one hand, the water utilization efficiency is not high, and on the other hand On the one hand, the concentrated water brings potential secondary pollution; the scale inhibitor method needs to add scale inhibitor molecules to the water body, which brings potential safety hazards on the one hand, and changes the composition of the water body on the other hand, causing many problems

[0004] There is also an ultrasonic descaling method in the prior art, which mainly uses the principle of ultrasonic vibration to let the scale fall off, but its effect is limited and cannot fully meet the descaling needs

Heating and boiling water to remove scale is a traditional method to reduce water hardness, but scale is often adhered to the surface of heating and heat exchange devices, resulting in increased energy consumption and hindering its application

[0005] It can be seen that there is currently a lack of a safe, convenient, and additive-free descaling method

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