Can circulating water enter the boiler?

Yes. Boiler water must be softened to remove calcium, magnesium and other ions. Otherwise, the boiler will easily scale and cause an explosion!

Circulating water cannot directly enter the boiler, because the boiler water must be softened. There are many calcium and magnesium ions in the circulating water, which can easily lead to scaling and affect the heat exchange effect of the boiler. The frequency of blowdown will increase, which will affect the thermal efficiency.

If the circulating water is purified, there will be no problem.

The water quality requirements for circulating water are not as high as those for boiler feed water. Generally, it is impossible to purify circulating water to meet the boiler feed water requirements. The investment would be too large, and there is no need for it.

　　I don’t know if the circulating water in your company is very clean. The circulating water in our factory is smelly and dirty. It is extracted from the smelly river next to the factory. It is not tap water and of course cannot enter the boiler. 　　Water that has not been softened cannot enter the boiler, otherwise it will cause a waste of coal after boiling, and it is easy to cause local boiling, co-evaporation of water vapor, explosions and other accidents. However, in fact, the cost of softening treatment is too high. I rarely see softened water entering the boiler. Maybe we are all small factories here, and tap water goes directly into the boiler, as do the surrounding factories. Nothing happened. Maybe the water quality here is better. Rainwater is collected in the reservoir, and then treated in the water plant and sent directly to the factory.

The water entering the boiler must be softened water, whether it is a steam boiler or a hot water boiler, this is common sense. If it is a water heater, if it reaches 6t/h, we will also need to deoxidize the water supply.

The water quality is not good, you should use qualified water

Untreated circulating water must not be used as boiler feed water

Yes, but the water must be softened and impurities removed. Most manufacturers use recycled water. Don’t waste water resources.

Definitely not! Boiler feed water must be strictly controlled!

Our company also has a place for switching between circulating water and boiler water, but circulating water cannot enter the boiler. Boiler water is very strict and must go through many treatment processes. Our company's boiler water has a separate water supply pipeline. Not only do the circulating water's calcium and magnesium ions seriously exceed standards, but there are also a lot of impurities that need to be discharged regularly. Circulating water must not enter the boiler, otherwise the consequences will be serious. Personal opinion, let’s discuss :P :P :P

Generally speaking, circulating water cannot enter the boiler directly. The circulating water has a high salt content and high calcium and iron ions, which will cause rust, corrosion and scaling on the heating surface. But I don’t know what your factory’s boiler does and what its water quality requirements are. Maybe a small amount of circulating water will not affect production. :)

Circulating water is generally raw water that has been simply treated and used for cooling circulation. It cannot directly enter the boiler because the water quality cannot meet the requirements of boiler water. Boiler water generally has to go through a series of treatments in the chemical workshop and becomes desalted water before it can be used as boiler feed water.

:o If the water quality does not meet the requirements, it cannot enter the boiler. Otherwise, accidents may easily occur.

The circulating water of split circulation and closed circulation is both dirty. Needless to say, open circulation is very dirty and needs to be softened and purified. For closed circulation, due to impurities in the pipes and impurities in the exchanger, the circulating water must at least filter impurities before it can enter the boiler.

Alas, I didn’t expect that there are still people who keep making such common sense mistakes and do not follow the operating procedures. They should be severely punished! If the process settings are unreasonable, they should be rectified. Depending on how long raw water has been introduced into the furnace, stop the furnace as soon as possible and open the steam drum to check the scaling on the inner wall.: Manually remove the scale first, and then take corresponding acidic measures depending on the severity of the scale. Strengthen sewage discharge before shutting down the furnace, and discharge the waste in turns at fixed points. . . .

Boiler feed water must be softened. Condensate water is not needed and is directly fed into the steam boiler.

Circulating water cannot enter the boiler. Boiler feed water is soft water that has been softened, and our boiler feed water is deaerated water that has been deaerated. A brother said that their small factory uses tap water, which is very dangerous. Of course, if the boiler is small, this is indeed the case. Very dangerous!

Our circulating water is usually medicated, and it has more sedimentation and impurities than tap water. Therefore, circulating water entering the boiler is more dangerous than running water entering the boiler:(

The condition for circulating water to enter the boiler is that your boiler is only planned to be used in the short term. For example, if it is scrapped within one or a few months, circulating water can be allowed to enter. Otherwise, boilers that need to be operated for a long time must undergo desalination treatment! ! ! Hahaha