【Daily Question】Chemical Engineering Principles 314: Low Phosphate Treatment (February 3)
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This post was last edited by “Back to Cambridge” on February 5, 2016, at 17:04. Starting today, the Chemical Engineering Theory section will launch the “Question of the Day” activity to help everyone reinforce their basic knowledge in chemical engineering. Subsequently, series such as “Fundamentals of Chemical Engineering”, “Mass Transfer and Separation”, “Chemical Thermodynamics”, and “Chemical Process Technology” will be introduced. We hope for your active participation! Wishing you all a Merry Christmas~~ For replies to the “Question of the Day” activity, answers can be viewed directly; however, the thread will be closed after one day! ! To encourage continued participation from everyone this year! Participation earns 3 wealth points, with an additional 4 wealth points awarded for correct answers~~~ Short answer question: When treating boiler water with phosphates, why is it necessary to use a low-phosphate treatment while maintaining the appropriate pH level? Answer: Since the solubility of phosphates decreases in high-temperature boiler water, when phosphates are used for treatment in boilers operating under high pressure or higher, they tend to precipitate out during fluctuations in load, resulting in a \"temporary disappearance\" of these substances. This damages the oxide layer on the surface of the boiler tubes, leading to corrosion of those tubes. Reducing the phosphate concentration in the boiler water can prevent this disappearance phenomenon and mitigate the resulting corrosion; therefore, low-phosphate treatment should be employed while maintaining the pH of the boiler water.
Answer: Since the solubility of phosphates decreases in high-temperature boiler water, when phosphate treatment is used in drum boilers operating at high pressures or above, precipitation tends to occur under conditions of load fluctuations, leading to a \"temporary disappearance\" of these substances. This damages the oxide layer on the surface of the boiler tubes and causes corrosion of those tubes. Reducing the phosphate concentration in the boiler water can prevent this disappearance phenomenon and mitigate the corrosion that results from it. Therefore, while maintaining the pH level of the boiler water, a low-phosphate treatment should be employed.
When boiler water is treated with phosphates, why is it necessary to use a low-phosphate treatment while maintaining the pH level? Answer: Since the solubility of phosphates decreases in high-temperature boiler water, when phosphate treatment is used in boilers operating under high pressure or higher conditions, precipitation can occur during fluctuations in load, leading to a \"temporary disappearance\" of these phosphates. This phenomenon damages the oxide layer on the surface of the boiler tubes and causes corrosion. By reducing the phosphate concentration in the boiler water, it is possible to avoid such disappearances and mitigate the resulting corrosion. Therefore, a low-phosphate treatment should be employed while ensuring that the pH level of the boiler water remains stable.
Due to the reduced solubility of phosphates in high-temperature boiler water, when phosphate treatment is used in drum boilers operating at high pressure or above, precipitation tends to occur under load-fluctuation conditions, leading to a \"temporary disappearance\" of these substances. This phenomenon damages the oxide film on the surface of the boiler tubes, causing corrosion of those tubes. Reducing the phosphate concentration in the boiler water can prevent this disappearance phenomenon and mitigate the resulting corrosion; therefore, low-phosphate treatment should be employed while maintaining the pH of the boiler water.
Since the solubility of phosphates decreases in high-temperature boiler water, when phosphate treatment is used in boilers operating at high pressures or above, precipitation tends to occur under conditions of load fluctuations, leading to a \"temporary disappearance\" phenomenon. This phenomenon damages the oxide layer on the surface of the boiler tubes and causes corrosion; reducing the phosphate concentration in the boiler water can prevent such disappearance and mitigate the resulting corrosion. Therefore, it is necessary to use a low-phosphate treatment while maintaining the appropriate pH level of the boiler water
Due to the reduced solubility of phosphates in high-temperature boiler water, when phosphate treatment is used in boilers operating at high pressures or above, precipitation tends to occur under conditions of load fluctuations, leading to a \"temporary disappearance\" phenomenon. This phenomenon damages the oxide layer on the surface of the boiler tubes and causes corrosion; reducing the phosphate concentration in the boiler water can prevent such disappearance and mitigate the resulting corrosion. Therefore, low-phosphate treatment should be employed while ensuring the proper pH level of the boiler water.
Since the solubility of phosphates decreases in high-temperature boiler water, when phosphate treatment is used in boilers operating at high pressures or above, precipitation tends to occur under conditions of load fluctuations, leading to a \"temporary disappearance\" phenomenon. This phenomenon damages the oxide layer on the surface of the boiler tubes and causes corrosion; reducing the phosphate concentration in the boiler water can prevent such disappearance and mitigate the resulting corrosion. Therefore, it is necessary to use a low-phosphate treatment while maintaining the appropriate pH level of the boiler water
Too high a phosphate concentration can lead to precipitation
When boiler water is treated with phosphates, why is it necessary to use a low-phosphate treatment while maintaining the pH level? Since the solubility of phosphates decreases in high-temperature boiler water, when phosphate treatment is used in boilers operating under high pressure or higher conditions, precipitation can occur during fluctuations in load, leading to a \"temporary disappearance\" of these phosphates. This phenomenon damages the oxide layer on the surface of the boiler tubes and causes corrosion. By reducing the phosphate concentration in the boiler water, it is possible to avoid such disappearances and mitigate the resulting corrosion. Therefore, a low-phosphate treatment should be employed while ensuring that the pH level of the boiler water remains constant
When boiler water is treated with phosphates, why is low-phosphate treatment necessary while maintaining the pH level? Answer: Since the solubility of phosphates decreases in high-temperature boiler water, when phosphate treatment is used in boilers operating under high pressure or higher conditions, precipitation can occur easily under varying load conditions, leading to a \"temporary disappearance\" of these substances. This damages the oxide layer on the surface of the boiler tubes and causes corrosion of those tubes. Reducing the phosphate concentration in the boiler water can prevent this disappearance phenomenon and mitigate the resulting corrosion; therefore, low-phosphate treatment should be employed while maintaining the pH of the boiler water.