Scale inhibition performance tester/Rapid scale inhibition performance tester/Rapid scale inhibition tester Model: KZC-I

I. Overview

In industrial water treatment (cooling water treatment, boiler water treatment, oilfield water injection treatment, air conditioning water treatment, etc.), scale inhibitors and composite water quality stabilizers are widely used to prevent water scaling. However, the scale inhibition performance of various scale inhibitors and composite water quality stabilizers is different, and the scale inhibition performance of the same scale inhibitor under different process conditions is also different. In order to select excellent scale inhibitors and water quality stabilizers, a fast and reliable method and instrument for testing scale inhibition performance are needed. In the past, people often used static methods to determine the scale inhibition performance of scale inhibitors, but static methods have the following disadvantages:（1) Poor data reproducibility; (2) Poor selectivity makes it difficult to distinguish the performance of different scale inhibitors; (3) The experiment takes a long time, with one round requiring 24 hours; (4) The lack of sufficient aeration conditions in the simulated cooling tower was addressed by the rapid scale inhibitor, which solved the aforementioned shortcomings.

2、 Characteristics of the instrument

This scale inhibitor uses the principle of bubble method to determine the scale inhibition performance of the scale inhibitor. Compared with the static method, this method has the following characteristics:

（1) Good reproducibility of data

（2) Easy to distinguish the performance advantages and disadvantages of different scale inhibitors;

（3) The testing time for each round can be shortened to 6-8 hours, which is only 1/4-1/3 of the static method;

（4) Simulated the aeration process in the cooling tower.

3、 Technical parameters

1. Working voltage:~220V

2. Whole machine power: about 3KVA

3. Temperature control range: room temperature -100 ℃

4. Flow range of bubbling gas: 16-100 liters/hour

5. Number of measuring devices: 4 sets

6. Dimensions: 680 × 420 × 400 (length × width × height) mm

7. Weight: 40kg

4、 Working principle

Most scaling in water is caused by the thermal decomposition of calcium hydrogen carbonate into calcium carbonate precipitation, and the chemical reaction of this process can be expressed as:

Ca(HCO₃)2 CaCO₃(Solid) ↓+CO₂↑+H₂O

Adding scale inhibitors can inhibit the precipitation of calcium carbonate scale. The better the performance of the scale inhibitor, the less calcium carbonate will precipitate from it, while the more calcium bicarbonate will remain in the water, resulting in a higher concentration of calcium ions in the water.

This method involves blowing a certain amount of air into the prepared water with a quantitative scale inhibitor to remove carbon dioxide from the water, promoting the chemical reaction to move to the right and quickly reaching its natural equilibriumPH， Then measure the stable concentration of calcium ions in the water [Ca²⁺]Stable.

This method uses the concentration of calcium ions as the standard for evaluating the performance of scale inhibitors. Under the same experimental conditions, adding scale inhibitor to water[Ca²⁺]The larger the stable value, the better the performance of the scale inhibitor