Acid cleaning of stainless steels and nickel alloys for FGD applications
Technical Report
·
OSTI ID:121514
- Burns & McDonnell Engineering Company, Kansas City, MO (United States)
Flue gas desulfurization (FGD) systems are typically constructed of stainless steel and nickel alloy materials In order to achieve the maximum corrosion resistance from these costly alloy materials, it is necessary to remove iron contamination, heat tint, etc. prior to placing the materials into operation. Various methods have been utilized for final surface cleanup including grinding, abrasive blasting, and acid cleaning. This paper will focus on the use of acid cleaning to prepare alloy materials for FGD installations. Alloy materials are cleaned most effectively by the use of nitric-hydrofluoric acid solutions. These acid solutions can be applied to localized areas using a pickle paste, whereas shop fabrications can be dipped in an acid tank. For field erected vessels, a nitric-hydrofluoric acid solution can be applied by spraying. This paper will address the advantages of acid cleaning, how to perform acid cleaning, and which companies can supply the solutions and perform the acid cleaning. Also, several case studies from recent FGD projects will be presented.
- Research Organization:
- Electric Power Research Inst., Palo Alto, CA (United States)
- OSTI ID:
- 121514
- Report Number(s):
- EPRI-TR--105258-Vol.4; CONF-950332--Vol.4
- Country of Publication:
- United States
- Language:
- English
Similar Records
CLEANING AND PASSIVATION OF CORROSION RESISTING STEELS
Standard recommended practice for descaling and cleaning titanium and titanium alloy surfaces
PICKLING OF THE ZIRCALOYS PRIOR TO CORROSION EXPOSURE
Technical Report
·
Sun Jul 01 00:00:00 EDT 1956
·
OSTI ID:4273674
Standard recommended practice for descaling and cleaning titanium and titanium alloy surfaces
Journal Article
·
Tue Dec 31 23:00:00 EST 1974
· Annu. Book ASTM Stand.; (United States)
·
OSTI ID:7365504
PICKLING OF THE ZIRCALOYS PRIOR TO CORROSION EXPOSURE
Technical Report
·
Mon Sep 01 00:00:00 EDT 1958
·
OSTI ID:4287130