What is the quality of the water in the boiler drum?
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What are the standard values for boiler water quality parameters such as pH, alkalinity, chloride ions, and so on? Could some expert tell me what kind of water quality is suitable for normal use in a furnace system?
Check the boiler water quality standards and you’ll know
The specific standard is: http://bbs.hcbbs.com/viewthread. ... 8%C2%AF%CB%AE%D6%CA; download it by yourself to learn! It should be determined based on the specific boiler type.
The parameters for the boiler water in our system are as follows: Sequence Number, Parameter Name, Unit, Value. 1. pH value, 9–11; 2. Phosphate, mg/L, 5–15; 3. Alkalinity, mmol/L, 0.2–1.0
Steam pressure in the drum: 3.9±0.1 MPa; level of water in the drum: ±50 mm above the midpoint line. Pressure and temperature at the outlet of the high-temperature superheater: 3.5±0.1 MPa and 450 ℃±10℃ respectively. Temperature of the feed water to the drum: 180–230℃. Pressure in the low-pressure steam collection network: 0.4–0.45 MPa. Water temperature at the inlet of the first stage: <180℃; water temperature at the inlet of the second stage: <230℃. Temperature of the air entering the first and second stages: 160±10℃. Parameters of the boiler water: chloride content <40 mg/l; total phosphorus content: 5–15 mg/l; pH level: 9–11; alkalinity: 0.2–0.6 mmol/l