Seeking help to start the new system
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Water hammer problems constantly occur when water is supplied to the boiler, mainly in the economizer. First, the noise generated by this water hammer is loud; second, its performance is poor. The greater the bypass opening, the more severe the water hammer becomes. If the bypass is reduced, the temperature inside the absorber drops, and smoke starts to emerge from the chimney! What’s going on? Deoxygenated water is not available right now! It’s only around 40 degrees Celsius
Water hammer occurs because water vaporizes in the economizer; naturally, the larger the bypass, the more severe the water hammer. Why is there no deoxygenated water? Leaving oxygen corrosion aside, when water at 40 degrees enters the deaerator, condensate acid will definitely form on the surface of the heat exchange tubes. You must be running a newly built plant without any other steam sources, and the steam generated by sulfuric acid has to be extracted through a turbine. At the beginning of operation, the turbine is still under calibration, so all the steam is vented? The commissioning time for the turbine is very long; by the time it’s ready, the economizer will be almost at the end of its useful life. The increase in acid mist caused by excessively low temperatures cannot be completely resolved by adjusting the operation of the acid cooler; the key lies in the deaerator. Since there is really no steam, it can be considered to return a portion of the water from the economizer back to the deaerator; a temporary pipeline can be installed quite quickly.
The steam produced earlier has all been sent to sulfur melting! There’s no steam source! Fluid flow is needed to operate the machine. We use a 37KW exhaust fan to heat the sulfur combustion furnace; since not enough heat is generated, the boiler needs to be refilled with water frequently, which results in little steam being produced. The machine was started after 10 p.m. last night! The water hammer is severe and there’s a lot of smoking too! The most critical issue is that the instruments aren’t reliable; there are no good ones available. I’ll go and check the situation during my night shift today~
Desalinated water at 40 degrees enters the economizer, and the economizer will deteriorate very quickly； The deionized water is not deoxygenated, resulting in severe oxygen corrosion in the boiler.
After steam enters the deaerator, the heat it carries is returned to the boiler, creating an internal cycle that requires only a small amount of steam to be discharged from the deaerator.
"Also, we use a 37KW exhaust fan to heat the sulfur incineration furnace; since not enough heat is generated, the boiler needs to be refilled with water frequently, which results in little steam being produced. Does \"refilling the boiler with water frequently\" mean that a large amount of water is added or a small amount? I understand that there is insufficient water supply, which is why not much steam is produced. Based on this analysis, the water consumption is not high, and the deaerator does not require a large amount of water for deoxidation either; controlling the amount of demineralized water supplied might help improve the situation. I’m not familiar with the detailed process; please point out any mistakes.