【Daily Question】Chemical Engineering Principles 317: Excessly high boiler water alkalinity (February 6)
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This post was last edited by Zaihui Kangqiao on 2016-2-19 at 15:52. The Chemical Engineering Theory section is now launching a \"One Question per Day\" initiative to help everyone reinforce their basic knowledge in chemical engineering. Subsequent series will include those on \"Principles of Chemical Engineering\", \"Mass Transfer and Separation\", \"Thermodynamics in Chemical Engineering\", and \"Chemical Process Engineering\". We hope you will give it your active support! Wishing everyone a happy Christmas! Answers to the questions in the \"One Question per Day\" initiative can be viewed directly, and the thread will be closed after 1 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 are the disadvantages of too high boiler water alkalinity? Answer: The disadvantages of excessive alkalinity in boiler water are: 1) When the alkalinity in boiler water is too high, it can cause alkaline corrosion and stress cracking of the water wall tubes. 2) It may cause foam to form in the boiler water, and even lead to boiling, which can affect the quality of the steam. 3) For riveted and expansion-joined boilers, too high an alkalinity can also cause caustic embrittlement and similar issues.
What are the disadvantages of excessive boiler water alkalinity? When the alkalinity in boiler water is too high, it may cause alkaline corrosion and stress corrosion cracking of the water wall tubes ； It may also cause foaming in the boiler water, and even lead to \"foamy boiling,\" thereby affecting the quality of the steam. For riveted or expansion-joined boilers, too high an alkalinity can also cause caustic embrittlement. Therefore, it is necessary to monitor the alkalinity of boiler water.
When the alkalinity in boiler water is too high, it may cause alkaline corrosion and stress corrosion cracking of the water wall tubes； It may also cause foaming in the boiler water, and even lead to \"foamy boiling,\" thereby affecting the quality of the steam. For riveted or expansion-joined boilers, too high an alkalinity can also cause caustic embrittlement. Therefore, it is necessary to monitor the alkalinity of boiler water.
The biggest downside is scaling!
When the alkalinity in boiler water is too high, it may cause alkaline corrosion and stress corrosion cracking of the water wall tubes； It may also cause foaming in the boiler water, and even lead to \"foamy boiling,\" thereby affecting the quality of the steam. For riveted or expansion-joined boilers, too high an alkalinity can also cause caustic embrittlement. Therefore, it is necessary to monitor the alkalinity of boiler water.
It may cause alkaline corrosion and stress corrosion cracking of the water wall tubes； It may also cause foaming in the boiler water, and even lead to \"foamy boiling,\" thereby affecting the quality of the steam. In riveted or expansion-joined boilers, too high an alkalinity can also cause caustic embrittlement
Answer: It may cause alkaline corrosion and stress corrosion of the water wall tubes； It could also be that the boiler water forms foam, or even boils to produce bubbles, which affects the quality of the steam ； Riveting or expansion bonding can also cause caustic embrittlement in boilers.
1. Destroys the oxide layer of the furnace tubes; 2. Accelerates corrosion in the furnace tubes; 3. Increases the salt content in the steam
When the alkalinity in boiler water is too high, it may cause alkaline corrosion and stress corrosion cracking of the water wall tubes； It may also cause foaming in the boiler water, and even lead to \"foamy boiling,\" thereby affecting the quality of the steam. For riveted or expansion-joined boilers, too high an alkalinity can also cause caustic embrittlement. Therefore, it is necessary to monitor the alkalinity of boiler water.
What are the disadvantages of excessive boiler water alkalinity? Answer: It may cause alkaline corrosion and stress corrosion of the water wall tubes ； It could also be that the boiler water forms foam, or even boils to produce bubbles, which affects the quality of the steam ； Riveting or expansion bonding can also cause caustic embrittlement in boilers.
What are the disadvantages of excessive boiler water alkalinity? Answer: The disadvantages of excessive alkalinity in boiler water are: 1) When the alkalinity in boiler water is too high, it can cause alkaline corrosion and stress cracking of the water wall tubes. 2) It may cause foam to form in the boiler water, and even lead to boiling, which can affect the quality of the steam. 3) For riveted and expansion-joined boilers, too high an alkalinity can also cause caustic embrittlement and similar issues.