NOTICE

Forums are temporarily disabled while we are working on a new login procedure.

When migrating the old forums over to our new forums we were unable to retain the identity of the authors, so the old posts will show up as "anonymous". All NEW posts will show up credited to their authors. So please participate and share knowledge just as you have in the past.

You must log in if you are an existing user or register if you are a new user in order to contribute to the discussions.

Discussion Forums - The Hendrix Group
HomeHomeDiscussionsDiscussionsGeneral Corrosi...General Corrosi...Iron corrosion rateIron corrosion rate
Previous
 
Next
New Post
1/31/2007 9:00 AM
 
User is offline 
No Ranking

Joined: 1/1/0001
Posts: 0
Dear sir, I am indeed happy to be a part of this great forum. I would like to know on why is pH of demineralised water increased to 9-10 before feeding a boiler?( though any scale & corrosion forming components are removed before feeding). I have heard that Iron corrosion rates are minimum at this pH range. If any one of you differ from mine, let me know the real scenario? Regards, M.Panneer
 
New Post
2/4/2007 9:00 AM
 
User is offline 
No Ranking

Joined: 1/1/0001
Posts: 0
Panneer: Demin (DI) water has had its minerals removed, but tends to be low in pH (5-6) and still contains oxygen. Raising the pH lowers its corrosiveness. Hope this helps! David Hendrix The Hendrix Group Inc.
 
New Post
2/5/2007 9:00 AM
 
User is offline 
No Ranking

Joined: 1/1/0001
Posts: 0
Thanks sir. But my mixed bed demineraliser outlet pH is 6.8 to 7.2. I would like to know whether water is still "corrosive" ?(due to high oxygen). By the by , i have heard the relationship of O2 solubility with temperature. does amount of O2 has a relation with pH? Awaiting your reply. Regards, M.Panneer
 
 Page 1 of 1
Previous
 
Next
HomeHomeDiscussionsDiscussionsGeneral Corrosi...General Corrosi...Iron corrosion rateIron corrosion rate


  

News

NEW! Calculation of Ammonium Salt Deposition Temperatures
With a little delay, our Calculation of Ammonium Salt Deposition Temperatures...read more
Sulfidic corrosion calculators NOW AVAILABLE
Our sulfidic corrosion calculators are now available at hghouston.com/calcula...read more

Stay Current

Sign up for our quarterly newsletter

covering updates on corrosion

Sign Up