How to prevent scale in the use of boilers
Release time:
2023-04-14 09:17
With the continuous development of society and the continuous improvement of people's living standards, boilers play an increasingly important role in people's daily lives, including power generation boilers, steam boilers in industrial boilers, bath boilers and hot water boilers in civil boilers, and various types of boilers. These boilers will encounter the danger of "scale" during use. What is scale? What are the hazards? How to prevent and govern? Next, I will provide you with a detailed explanation.
1、 What is scale
The main components of scale are calcium carbonate and magnesium carbonate, which are formed by the decomposition of calcium ion and magnesium ion in water and carbonate, bicarbonate, sulfate, etc. in water after high temperature. Generally, there are more calcium ions in water, so the main component of scale is generally calcium carbonate.
2、 The hazards of scale
The harm of scale to boilers is mainly reflected in two aspects: boiler lifespan and fuel usage. 1. As is well known, scale is a poor conductor of heat, which has poor thermal conductivity. After the formation of scale in the boiler, the boiler steel plate will overheat and deform due to temperature rise, leading to boiler damage. 2. Due to the fact that scale is a poor conductor, when it adheres to the inner wall of the boiler, it will affect the transfer of heat, thereby reducing the absorption of temperature by the water inside the boiler. This means that when we need hot water at the same temperature, boilers with scale require more fuel than boilers without scale. From the above, it can be seen that the harm of scale is very serious. In units that do not attach importance to boiler water treatment work, the boiler operation status is often: good in one year, bad in two years, and burnt out in three years. This will not only bring huge economic losses, but also lead to major safety responsibility accidents such as production stoppage and explosions. However, the harm of scale is often an accumulation process that requires a certain amount of time to detect. However, once the above-mentioned hazards are discovered, it has already formed an irreversible situation and losses.
3、 How to prevent scale
At present, the main methods for preventing boiler scale formation in the market are softening water equipment and silicon phosphorus crystal equipment. 1) Softening water equipment, as the name suggests, is a device that reduces water hardness, mainly removing calcium and magnesium ions from water. His working principle is to use cation exchange resin to replace calcium and magnesium ions in water, and exchange them with sodium ions in the resin, thereby adsorbing calcium and magnesium ions in water and softening the water. 2) Silicon phosphate crystal is a chemical agent, divided into industrial grade and food grade. Food grade silicon phosphate crystals are mostly imported, while industrial grade silicon phosphate crystals are mostly made in China. Its working principle is to generate Brownian motion through the impact of water flow, thereby dispersing calcium and magnesium ions in the water and preventing the formation of scale. Softened water and silicon phosphate crystal equipment each have their own advantages. The advantage of softened water equipment is its good effect, but its high price makes it difficult to promote it in the market. Silicon phosphate crystal, due to its low price and good effect, is currently a popular scale inhibition device in the market.
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