Boiler scale removal method

In fact, cleaning the scale inside the boiler is a rather laborious task. Some people will use a shovel to remove it, but we all know that such a method may cause certain damage to the boiler itself. So is there a method that is relatively scientific and effective? Below we will analyze and introduce these boiler scale removal methods in detail.

1. Boiler Mechanical Descaling

Mechanical descaling is mainly carried out using tools such as electric pipe cleaners, flat shovels, wire brushes and hand hammers. This method is relatively simple and low-cost, but it is labor-intensive, has poor descaling effect, and is easy to damage the metal surface. It is only suitable for small boilers with small scaling area and simple structure, which are easy for mechanical tools to contact the scale. In recent years, due to the application of high-pressure water guns specially used for cleaning, mechanical descaling by hydraulic flushing has developed rapidly. The effect of this high-pressure hydraulic descaling is greatly improved compared with the use of primitive mechanical tools, and it is safer and more convenient. but

At present, high-pressure hydraulic descaling is still limited to industrial boilers with simpler structures.

2. Boiler Alkaline Cleaning (Boiler) Descaling

The main function of boiler alkaline boiling is to transform scale and make it loose and fall off. The descaling effect of simple alkaline boiling is poor and often needs to be combined with mechanical descaling. Alkali boiling descaling has a certain effect on scale mainly composed of sulfate and silicate, but it is far less effective than acid washing descaling for carbonate scale. Alkali washing and boiling furnaces are also commonly used for rust removal and degreasing of newly installed boilers, and are sometimes also used for degreasing and cleaning or scale type conversion before pickling.

The amount of alkaline cleaning agent should be determined according to the degree of scaling and dirtiness of the boiler. The general amount used for descaling (amount per ton of water) is: 5-10kg of industrial trisodium phosphate, 3-6kg of sodium carbonate, or 2-4kg of sodium hydroxide. These alkaline cleaning agents should first be prepared into a certain concentration in a solution tank, then pumped into the pot and circulated until uniform.

The method of descaling by alkaline boiling is basically the same as that of boiling a new boiler, except that after the boiling is completed, the inspection holes of the boiler should be opened and mechanical (or high-pressure hydraulic) assisted descaling should be carried out in time to prevent the soft scale from hardening again.

No matter where the scale problem exists, we must not ignore the use of some methods, because if the method is right, you can achieve the best youthful effect in a short time. We remind every friend to pay attention to the hygiene and health issues of various products in family life.