The inner surface of the boilers during operation is covered with various deposits in the form of scale, corrosion. All this leads to the fact that the efficiency of the boiler decreases, as well as the entire heating system, which is connected to a steam or water cycle. Such problems can lead to unstable operation of the heat transfer system, malfunctions in the operation of equipment, as well as to damage to the pipeline. All of the above problems can be avoided, as well as reduce costs, if you clean the boilers in time. Naturally, initially the solid fuel boiler should be of high quality to serve for a long time.
If you follow the water regime according to the recommendation of the manufacturer, then iron oxides will mainly be deposited. In the case when the water is poor -quality, you need to add carbonates, as well as compounds of phosphates, silicon or copper. In addition, it is necessary to take into account such a feature that deposits are much less formed on the pipes of the convective part than on the pipe of the screens.
At the same time, the deposits are formed evenly on the pipes of the screen, but on convection pipes they can vary significantly in thickness. At the end of each heating season, it is recommended to check the thickness, density and composition of deposits. In cases where their density exceeds 800-1000 g/m, you will need chemical cleaning of the boilers.
To do this, you will need to contact the organization that specializes in a specific form of work and subscribe to the contract for servicing the boiler room. Thus, you will get rid of unnecessary worries associated with the performance of the equipment. Employees of such an organization themselves will select the desired cleaning technology and reagents, based on the composition and density of deposits. You can buy electric boiler, gas, on solid fuel, but you need to remember that you need to clean absolutely all boilers.
The operational chemical cleaning of the boiler consists of the following stages:
1. Cleaning with ordinary network water internal surfaces of the boiler.
2. The boiler alkali.
3. With the help of technical water, boilers are washed.
4. With the help of a detergent, the flushing circuit is filled, in which the detergent circulates for some time for some time.
5. The boiler is soaked again with technical water, after which the internal surfaces are neutralized.
6. At the end, the boiler is washed with network water and the used detergent is disposed of.
In the case when the density exceeds 1500 g/m, chemical cleaning is carried out twice. In the interval between the stages, alkali is carried out, and after the treatment is underway. In particularly neglected cases, when the density of deposits is above 3000 m/g acid and alkaline treatments alternate several times.
In some cases, experts also use mechanical or hydrodynamic flushing. It must be used before chemical cleaning, it allows you to remove loose deposits, due to which the thickness of the deposits decreases, which in turn reduces the amount of acidic and alkaline treatments and the volume of the means used.
In addition to chemical cleaning, there is also a mechanical cleaning method. It is carried out using manual tools. These include Shabers, metal brushes and scrapers. With mechanical cleaning, the walls of collectors and drums are mainly cleaned.
After that, the purified surface is washed with a duct of the water, and after check the quality of the cleaning.
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