【Daily Question】Chemical Engineering Principles 321: Controlling Furnace Water pH (February 17)
Thread Content
This post was last edited by “Back to Cambridge” on February 27, 2016, at 11:23. Starting today, the Chemical Engineering Theory section is launching the “Question of the Day” activity, aimed at helping 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 everyone’s continued participation this year! You get 3 wealth rewards just for participating, and an additional 4 wealth points for correct answers~~~ Short answer question: What is the reason for keeping the pH of the boiler water at or above 9? Answer: The reason for keeping the pH of the boiler water at or above 9 is: 1) When the pH level is low, the corrosive effect of the boiler water on the boiler’s steel components increases. 2) The reaction between phosphates and calcium ions in the furnace slag occurs only when the pH value reaches a certain level, allowing the formation of slag that can be easily removed. 3) To suppress the hydrolysis of silicate in the boiler water and reduce the amount of silica carried in the steam. However, the pH value of the boiler water should not be too high either; in other words, it generally should not exceed 11. If the pH value of the boiler water is very high, it can easily lead to alkaline corrosion.
The reason for controlling the PH of the boiler water at a level not lower than 9 is: (1) When the PH value is low, the corrosiveness of the boiler water toward the boiler’s steel components increases. (2) The reaction between phosphate ions and calcium ions in the furnace water allows for the formation of slag that can be easily removed, only when the pH value reaches a certain level. (3) To suppress the hydrolysis of silicate in the boiler water and reduce the amount of silica carried in the steam. However, the pH value of the boiler water should not be too high either; in general, it should not exceed 11. If the pH value of the boiler water is too high, it can lead to alkaline corrosion.
The reason for controlling the pH of the boiler water at a level not lower than 9 is: 1) When the pH value is low, the corrosivity of the boiler water against the boiler’s steel components increases. 2) The reaction between phosphates and calcium ions in the furnace slag occurs only when the pH value reaches a certain level, allowing the formation of slag that can be easily removed. 3) To suppress the hydrolysis of silicate in the boiler water and reduce the amount of silica carried in the steam. However, the pH value of the boiler water should not be too high either; in other words, it generally should not exceed 11. If the pH value of the boiler water is very high, it can easily lead to alkaline corrosion.
The reason for controlling the pH of the boiler water at a level not lower than 9 is: 1) When the pH value is low, the corrosivity of the boiler water against the boiler’s steel components increases. 2) The reaction between phosphates and calcium ions in the furnace slag occurs only when the pH value reaches a certain level, allowing the formation of slag that can be easily removed. 3) To suppress the hydrolysis of silicate in the boiler water and reduce the amount of silica carried in the steam. However, the pH value of the boiler water should not be too high either; in other words, it generally should not exceed 11. If the pH value of the boiler water is very high, it can easily lead to alkaline corrosion.
(1) At low pH levels, the corrosivity of the boiler water on the boiler steel increases. (2) The reaction between phosphate ions and calcium ions in the furnace water allows for the formation of slag that can be easily removed, only when the pH value reaches a certain level. (3) To suppress the hydrolysis of silicate in the boiler water and reduce the amount of silica carried in the steam. However, the pH value of the boiler water should not be too high either; in general, it should not exceed 11. If the pH value of the boiler water is too high, it can lead to alkaline corrosion.
What is the reason for keeping the pH of the boiler water at or above 9? Too low levels can lead to acidic corrosion of the metal, but too high levels are also problematic as they cause alkaline corrosion. Refer to the DLT805 soda guidelines.
What is the reason for keeping the pH of the boiler water at or above 9? Answer: Too low levels can cause acidic corrosion of the metal, but too high levels are also problematic as they lead to alkaline corrosion.
What is the reason for keeping the pH of the boiler water at or above 9? The reason for controlling the PH of the boiler water at a level not lower than 9 is: (1) When the PH value is low, the corrosiveness of the boiler water toward the boiler’s steel components increases. (2) The reaction between phosphate ions and calcium ions in the furnace water allows for the formation of slag that can be easily removed, only when the pH value reaches a certain level. (3) To suppress the hydrolysis of silicate in the boiler water and reduce the amount of silica carried in the steam. However, the pH value of the boiler water should not be too high either; in general, it should not exceed 11. If the pH value of the boiler water is too high, it can lead to alkaline corrosion.
(1) At low pH levels, the corrosivity of the boiler water on the boiler steel increases. (2) The reaction between phosphate ions and calcium ions in the furnace water allows for the formation of slag that can be easily removed, only when the pH value reaches a certain level. (3) To suppress the hydrolysis of silicate in the boiler water and reduce the amount of silica carried in the steam. However, the pH value of the boiler water should not be too high either; in general, it should not exceed 11. If the pH value of the boiler water is too high, it can lead to alkaline corrosion.
(1) At low pH levels, the corrosivity of the boiler water on the boiler steel increases. (2) The reaction between phosphate ions and calcium ions in the furnace water allows for the formation of slag that can be easily removed, only when the pH value reaches a certain level. (3) To suppress the hydrolysis of silicate in the boiler water and reduce the amount of silica carried in the steam. However, the pH value of the boiler water should not be too high either; in general, it should not exceed 11. If the pH value of the boiler water is too high, it can lead to alkaline corrosion.