Q & A > Question Details
Recently, because of some difficulties, we have substituted demineralised water injection system with HP boiler feed water branched from HP BFW header. So, HP boiler feed water is being injected upstream of air cooler while it contains oxygen scavenger, amunium, and phosphate materials. In addition, the temperature of HP BFW is 80 degree centigrade higher than demineralised water's. By focusing on this, are there any consequences about this substitution for a long time of operation?
 
Answers
04/12/2015 A: Sudhakara Babu Marpudi, Dangote Oil Refinery Company, m_sudhakarababu@yahoo.com
Wash water will have a specified quality and purpose. I guess the purpose is to wash off the deposits off the tube internal surfaces. BFW with high pH may not meet the specified quality of DM water and the purpose of wash water injection may not be met.