The range of sodium ions in boiler water quality tests in thermal power plants is from 0.023 μg/L to 23 g/L.This range covers the needs of sodium ion determination from trace amounts to high concentrations, ensuring accurate measurements in a variety of situations.During the specific operation, the error in the determination of sodium ions should be controlled within ±0.05 pNa.This strict error control requirement ensures the accuracy and reliability of the test results.The following section details the values and criteria for sodium ion and sodium ion analysers for boiler water quality testing in thermal power plants.
The presence of sodium ions in boiler water originates primarily from improper feedwater treatment or contamination of the condensate recovery system.When the concentration of sodium ions in boiler water is too high, it can lead to several problems:
Scaling: Sodium salts are prone to precipitate and form hard scales at high temperatures, which not only reduces heat exchange efficiency, but may also clog pipes and increase maintenance costs.
Corrosion: high concentrations of sodium ions can accelerate the corrosion of metal materials, especially for equipment made of stainless steel, long-term exposure to the environment containing high sodium ions, prone to pitting phenomenon.
Steam contamination: Sodium ions entering the steam can affect the quality of the steam, causing damage to critical components such as turbine blades and affecting power generation efficiency.
The standards for thermal power plant boiler water quality testing include GB/T 12145-2016 Water Vapour Quality of Thermal Power Generating Units and Steam Power Equipment.The standard specifies in detail the determination method and quality control requirements for sodium ion and other related parameters.These standards apply not only to the new acquisition of domestic and imported water quality analysis instruments quality acceptance, but also applies to have been put into use in the application of water quality analysis instruments in the quality inspection and acceptance.
According to the standard GB/T 12145-2016 Water Vapour Quality of Thermal Power Generating Units and Steam Power Equipment, the concentration of sodium ions in the boiler water quality of thermal power plants should be controlled within the following range:
For boiler feed water, the sodium ion concentration should be less than 20 µg/L;
For condensate, the sodium ion concentration should be less than 5 μg/L;
For vapours, the sodium ion concentration should be less than 1 μg/L.
These standards ensure that the level of sodium ions in the water is within safe limits and does not cause corrosion or scaling problems in equipment at various stages and usage scenarios.
The ERUN-ST3-M6 benchtop water quality sodium ion analyser for power plants manufactured by Erun Environmental Protection is an improvement on the previous pointer-type step-by-step display, knobs and switches and non-intelligent design.Equipped with ppb grade sodium ion measurement electrode and reference electrode, the performance of static measurement in the beaker is much improved than the traditional sodium meter, as long as the electrode cleaning is paid attention to in use, it is possible to get more satisfactory results.It can be widely used in continuous monitoring of sodium ions in solutions of thermal power, chemical fertiliser, metallurgy, environmental protection, pharmacy, biochemistry, food and tap water.
The above is both the value and standard of sodium ion and sodium ion analyser for thermal power plant boiler water quality testing in detail, I hope that this paper can provide valuable reference information for the technical personnel engaged in the operation, management and maintenance of thermal power plants.For more information, please contact our customer service.
