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How to clean industrial Steam boiler scale

How to clean industrial Steam boiler scale

(Summary description)How is the scale in the Steam boiler produced? After long-term operation of the boiler, it is inevitable that there will be scale and rust problems. The key reason for the boiler scale is that the feed water contains strength components.

How to clean industrial Steam boiler scale

(Summary description)How is the scale in the Steam boiler produced? After long-term operation of the boiler, it is inevitable that there will be scale and rust problems. The key reason for the boiler scale is that the feed water contains strength components.

Information

How is the scale in the Steam boiler produced? After long-term operation of the boiler, it is inevitable that there will be scale and rust problems. The key reason for the boiler scale is that the feed water contains strength components. After continuous evaporation and concentration at high temperature and high pressure, a series of physical, A chemical change that produces a hard, dense scale on heated surfaces.

Steam boiler

Industrial steam boilers are mostly low-pressure boilers, and the number of high-pressure boilers is very small. After this kind of boiler has been in operation and used for a period of time, some boilers with poor water or former sewage treatment, because the water is boiled and volatilized after being heated in the ceramic pot, it provides chemical changes and continuous extraction for the residue in the water. standard. When this residue reaches saturation in the pot of water, solid chemicals dissolve. The dissolved solid chemicals build up on heated surfaces and are known as scale.

Proper procedure for Steam boiler to clean scale:

1. Before cleaning, check the boiler scale, query the type of scale and measure the thickness accurately. Wash with water to get rid of the sludge, dissolve the medicine and introduce it into the steam boiler.

2. After the cleaning drug concentration meets the requirements, start the pump circulation system to clean, remove the waste water, and soak with water.

3. Add pickling and passivation drugs to clean the sewage treatment and soak.

4. Heat the water in the boiler, add pre-film agent, and carry out pre-film treatment in the circulation system.

5. Drain out the liquid medicine and wash with cold water.

6. Repair the original system software.

Clean scale standard:

1. When cleaning the scale of sulfide, the descaling surface must reach more than 80% of the original scale involved surface;

2. When cleaning the scale of potassium thiocyanate and aluminum silicate, the descaling surface must reach 60% of the original scale involved surface;

In order to

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