Industrial equipment cleaning method

Industrial equipment cleaning methods are: 1 physical cleaning method 2 chemical cleaning method 3 electronic cleaning method (electronic descaling, anti-scaling) 4 electrostatic cleaning method (static anti-scaling, descaling)

1. The physical cleaning method is the use of hand tools and machinery to remove external forces from various types of pollution without changing the cleaning methods for the components. That is, the method does not change the original chemical molecular composition.

1 mechanical cleaning method: cleaner and scraper cleaning method, drill pipe cleaning method, shot peening method.

2 water cleaning method: low pressure cleaning pressure of 196-686 kPa, about 2-7 kg force / square centimeter, equal to 0.2-0.7Mpa

3 High pressure hydraulic cleaning: The pressure of high pressure cleaning is 4900 kPa, about 50 kgf/cm2, equal to 5Mpa. This method is also called high-pressure water jet method, high-pressure cleaner.

2. The principle of anti-fouling and descaling by the electronic cleaning method is to change the molecular structure of water by using a high-frequency electric field to prevent scale and scale removal. When water passes through a high-frequency electric field, its molecular and physical structure changes. The original associative chain macromolecule breaks into a single water molecule. The positive and negative ions of salt in the water are surrounded by a single water molecule, and the movement speed is reduced, and the number of effective collisions is reduced. Reduced, electrostatic attraction drops, can not be in the hot wall pipe surface structure, so as to achieve the purpose of anti-scaling.

3, electrostatic anti-scaling, descaling and electronic descaling, but also by changing the state of water molecules to achieve anti-scaling, descaling purposes. It is only the latter that uses the electrostatic field instead of the electron. The mechanism is that the water molecules have polarity (also known as dipoles). When the water dipole passes through the electrostatic field, each water dipole will be arranged in positive and negative order. If the water contains dissolved salts, its positive and negative ions will be surrounded by water dipoles, and also arranged in positive and negative order in the water dipole group, cannot move by itself, and therefore cannot be close to the wall of the tube. It is deposited on the wall of the tube to form scale. At the same time, the release of oxygen in the water can create a very thin oxide layer on the tube wall, which can prevent the corrosion of the tube wall.

4, chemical cleaning method: the use of chemical agents to surface contamination or coating (such as dirt) with its chemical reaction and be removed, such as the dirt layer of pickling, alkaline washing. In order to prevent the substrate from being corroded or to keep the corrosion rate within the allowable range in the chemical cleaning, an appropriate amount of an inhibitor and an additive that activates, penetrates, and wets is generally added to the chemical cleaning solution. Method: Immersion method, circulation method, cleaning method in operation is also called not to stop the chemical cleaning method.