In a careful comparison of the limits specified in the "GB T 1576-2018 Industrial Boiler Water", it is found that whether it is a dual-purpose boiler, a steam boiler, or a hot water boiler, phosphate is a mandatory index, and the limit requirements of phosphate are a range, which means that the appropriate amount of phosphate in the boiler water plays a positive role in the boiler, let's take a lookEffect of phosphate on boiler water qualityWhat are the specific aspects?Boiler water phosphate testerMeasuring range?
Natural water generally does not contain phosphate, so the phosphate in boiler water is artificially added, mainly provided by trisodium phosphate (phosphate), which is often added to boiler water as an additive. The main function is to increase the pH value of boiler water to reduce boiler corrosion, mainly through four mechanisms of action to carry out anti-corrosion and anti-scale treatment of the boiler, corrosion inhibition, coloring, complexation, and inhibition of crystal growth, among which inhibiting the growth of crystals is one of the fastest mechanisms of phosphate. In boiler water, calcium ions and magnesium ions will crystallize to form scale, and phosphate can inhibit this crystallization to a certain extent, reduce the formation of scale, and reduce the corrosion and blockage of boiler pipes. In addition, phosphate can also combine with calcium and magnesium ions to form phosphate to inhibit corrosion. However, the amount of phosphate added needs to be strictly controlled, and insufficient or excessive dosage has a direct impact on the boiler.
The phosphate content is too high, one is a waste of medicine;Second, it will increase the salt content of boiler water and affect the quality of steamThird, it may be complexed with metal ions such as iron and copper in the boiler water, resulting in pipeline blockage. If the phosphate content is too low, it can not play the purpose of waterproofing scale, and there is no phosphate in the boiler water, resulting in the scaling of calcium and magnesium ions on the heating surface of the boiler. In the case of high-pressure boilers, it may also affect the alkalinity of boiler water (because phosphate hydrolysis is the main alkalinity of high-pressure boiler furnace water**).
It can be seen that controlling the phosphate content is of great significance to the boiler. Here it is recommended to use the desktop boiler water quality tester ERUN-ST series produced and sold by Xi'an Yingrun Environmental Protection Company, which is designed with reference to "GB T 1576-2018 Industrial Boiler Water", which can detect a number of conventional parameters in boiler water, and is suitable for boiler water testing in steel, coal mine, coking, thermal power plants, internal combustion power plants, petrochemical and other industries.
Technical parameters of boiler water phosphate tester.
Product model: ERUN-ST series benchtop boiler water quality analyzer.
Measuring range: Phosphate: 001-10.0mg/l；10.0-50.0mg/l
Basic error: 5%.
Repeatability: 2%.
Optical stability: the absorbance value of the instrument drifts less than 0 within 20min002a
Display: color touch screen, bilingual switchable in Chinese and English.
Dimensions: 400mm 300mm 140mm
Power supply: 220V
That's allEffect of phosphate on boiler water qualityPhosphate is a commonly used water treatment agent for boiler water, which plays an important role in the anti-corrosion and anti-scaling of boiler water, and it is also necessary to control the concentration and dose of phosphate according to the specific situation of the boiler to ensure the best boiler water treatment effect. In addition to the aboveBoiler water phosphate testerIn addition, Yingrun environmental protection company also produces a variety of other types of phosphate detectors for customers to buy, welcome users to inquire.