The best cleaning method of condenser scale, there will be many problems when the condenser is used for a long time, which need us to deal with it in time. Scale will affect the heat transfer effect and lead to the increase of condensation temperature. Do you know how to clean the condenser? Let's take a look at the best cleaning method of condenser scale.
The best way to remove condenser scale 1 There are three main ways to remove condenser scale:
Mechanical descaling method
Chemical pickling descaling method
Electronic magnetized water descaling method
Here are three methods of cleaning and descaling.
1, mechanical descaling:
Mechanical descaling is the descaling of cooling tube condenser with flexible shaft tube gasket (commonly known as cannon), which is suitable for vertical shell-and-tube condenser. Speaking of which, I can't help thinking of years ago when I was cleaning the condenser with a gun. )
2, chemical pickling descaling:
Chemical pickling descaling method is suitable for vertical and horizontal shell-and-tube condensers (steel pipes). In the process of descaling, the normal operation of condenser must be stopped to ensure safety.
3, electromagnetic water descaling method:
Electronic magnetized water descaling method is suitable for all kinds of condensers, and it can descale and prevent scale without affecting the normal operation of refrigeration system. In addition, this method can not only effectively prevent the generation of new scale, but also remove the original scale.
The best cleaning method of condenser scale 2: chemical cleaning method;
Chemical cleaning is mainly cleaning with cleaning solution, first cleaning with acidic solution, then neutralizing cleaning with alkaline solution, and finally cleaning the acid-base solution with clear water.
1. A circulating pump and a pipeline can be connected between the cleaning solution storage tank and the condenser to form a closed loop, so that the cleaning solution can be continuously circulated for 12-24 hours, and the deposits will dissolve and fall off.
2. The cleaning liquid can be added into the cooling water system according to a certain proportion, and the cooling pump is started to circulate for 12-24 hours, so that the deposited layer can be continuously dissolved and shed through the chemical action and scouring action of the cleaning liquid. However, this method requires a large amount of cleaning solution, and the cost is high.
3. Mix the cleaning solution according to a certain proportion, add it into the condenser and let it stand for 5- 10 hour, so as to soften and dissolve the precipitate, discharge the cleaning solution and rinse it with clear water.
The advantage of chemical cleaning is that the scale is thoroughly removed and the workload of workers is reduced, but the disadvantage is that the cleaning solution may cause corrosion to the condenser copper tube, the waste liquid after cleaning is discharged, and the price of the cleaning solution is relatively expensive.
Physical cleaning method:
Physical cleaning mainly adopts soft shaft brush cleaning. The flexible shaft is driven by the motor of the cleaning machine to rotate, and the front end of the flexible shaft is provided with a nylon brush. When in use, the flexible shaft and the brush are inserted into the copper tube of the condenser, the dirt in the copper tube is removed by rotating the brush at a high speed, and finally, it is rinsed with clean water. This machine is called a cannon.
The advantage of physical cleaning is that it saves the cost of chemical cleaning solution, avoids the treatment of waste liquid after chemical cleaning, and is not easy to cause corrosion of condenser copper tubes. The disadvantage is that the cleaning effect on hard scale and corrosion products with strong adhesion is not good, and the cleaning operation is time-consuming and laborious.
The best cleaning method of condenser scale 3 I. Mechanical descaling method:
Mechanical descaling is a method of descaling steel cooling tube condenser with flexible shaft tube gasket, which is especially suitable for vertical shell-and-tube condenser.
The operation method is:
1. Drain the refrigerant from the condenser.
2. Close all valves connected to the condenser and refrigeration system.
3. The cooling water of the condenser is normally supplied.
4. The umbrella-shaped gear scraper connected with the flexible shaft tube washer is used to scrape the scale in the vertical tube of the condenser from top to bottom. The heat generated by the friction between the scraper and the tube wall is cooled by circulating cooling water, and at the same time, the removed pollutants such as scale and rust are flushed into the pool.
Second, chemical pickling descaling method:
Clean the condenser with the prepared weak acid scale remover to make the scale fall off and improve the heat transfer efficiency of the condenser.
The operation method is:
1. Prepare the descaling liquid in the pickling tank, start the pickling pump, and circulate the descaling liquid in the condenser tube for 24 hours. In general, the scale is basically removed after 24 hours.
2. After the pickling pump stops working, brush it back and forth in the condenser tube wall with a circular steel brush, and rinse the scale and rust with clean water.
3. Wash the detergent solution remaining in the test tube repeatedly with clear water until it is completely clean. Chemical pickling descaling method is suitable for vertical and horizontal shell-and-tube condensers.
Three, electronic magnetized water descaling method:
The working principle of the electronic magnetic water separator is to dissolve calcium, magnesium and other salts in the cooling water flowing through the condenser in the form of positive and negative ions at room temperature.
When the cooling water flows through the transverse magnetic field of the magnetic water separator at a certain speed, the dissolved calcium-magnesium plasma obtains induced electric energy, changes its charge state, and the electrostatic attraction between ions is disturbed and destroyed, thus changing its crystallization conditions, making the crystal structure loose, reducing its tensile and compressive strength, failing to form hard scale with strong adhesion, and becoming loose sludge to be discharged with the flow of cooling water.