I’d like to ask quietly: what are the consequences of not having continuous operation for several months, with irregular operation intervals, and a furnace water pH of 6-7?

If a steam generator is not subjected to regular or occasional blowdown over several months, and no chemicals are added to it, while the pH level of the boiler water remains at 6-7, the following consequences may occur: 1. **Corrosion issues**: A low pH level of the boiler water (the ideal pH range is 9-11) can lead to metal corrosion, affecting the metal pipes and other components of the steam generator and thus reducing its service life. 2. **Scaling issue**: Failing to carry out regular or occasional water discharge can lead to the accumulation of minerals in the water, such as calcium and magnesium ions, which form hard scale that adheres to the inner walls of the boiler and the heat exchange surfaces. This reduces thermal efficiency and increases energy consumption. 3. **Reduced system efficiency**: Due to corrosion and scaling, the heat transfer efficiency declines, which means more fuel is required to achieve the same output, thereby increasing operating costs. 4. **Safety risks**: Excessive scaling and corrosion can cause damage to pipes or equipment, leading to leaks or explosions, which pose a serious threat to the safety of both the equipment and the operators. Therefore, it is recommended to carry out regular maintenance and inspections in accordance with the equipment manufacturer’s instruction manual, including proper drainage and dosing of chemicals, to ensure the proper operation of the steam generator and extend its service life. At the same time, adjust the pH value of the boiler water to an appropriate range to prevent corrosion and scaling issues. .

Based on the information you provided, the fact that no problems occurred with this boiler indicates that the quality of the water supplied to it is excellent – essentially at the level of theoretically pure water； Or the boiler’s evaporation rate is extremely low – for example, a 10-ton boiler may have an actual evaporation rate of only 10 grams per hour. I can’t think of any other possibilities.

The steam produced is sent to the heater for superheating; sometimes the temperature drops suddenly, by only about 15 degrees. However, looking at the historical trends, the superheating temperature was 350 degrees a month ago, while it is now 308 degrees

Boilers are classified as special equipment; operating them in accordance with regulations ensures safety. Failing to follow the procedures means that, in case of problems, it will be considered an illegal act.

After several months of non-continuous operation, irregular operation without the addition of chemicals, salt accumulates inside the steam generator; the liquid level becomes inaccurate, resulting in overfilling or underfilling incidents