Knowledge for the Sulphuric Acid Industry
Sulphuric Acid on the Web
Introduction
General
Equipment Suppliers
Contractor
Instrumentation
Industry News
Maintenance
Acid
Traders
Organizations
Fabricators
Conferences
Used
Plants
Intellectual
Propoerty
Acid
Plant Database
Market
Information
Library
Technical Manual
Introduction
General
Definitions
Instrumentation
Plant Safety
Metallurgial
Processes
Metallurgical
Sulphur Burning
Acid Regeneration
Lead Chamber
Technology
Gas Cleaning
Contact
Strong Acid
Acid Storage
Loading/Unloading
Transportation
Sulphur
Systems
Liquid SO2
Boiler Feed Water
Steam Systems
Cooling Water
Effluent Treatment
Utilities
Construction
Maintenance
Inspection
Analytical Procedures
Materials of Construction
Corrosion
Properties
Vendor Data
DKL Engineering, Inc.
Handbook of Sulphuric Acid Manufacturing
Order
Form
Preface
Contents
Feedback
Sulphuric Acid
Decolourization
Order Form
Preface
Table of Contents
Process Engineering Data Sheets - PEDS
Order
Form
Table of Contents
Introduction
Bibliography of Sulphuric Acid Technology
Order Form
Preface
Contents
Maintenance and Inspection - Pump Tanks
September 15, 2003
Introduction Shell Corrosion Floor Lifting Shell Bulging |
Associated
Links
Pressure Grouting |
Shell Corrosion The brick lining in this pump tank has been compromised such that the acid has leaked through the brick lining to the carbon steel shell. The carbon steel shell has corroded completely through exposing the sulphate that has built up between the brick and the shell. |
|
Floor Lifting When acid penetrates through the brick lining of a flat bottom pump tank, the carbon steel shell will corrode resulting in sulphate formation. The sulphate formed occupies a greater volume than the parent material and begins to exert pressure on the shell and the brick lining. One of two things can happen: the brick floor heaves upward or the flat bottom begin to bulge. In the pump tank pictured here, the bottom has begun to bulge causing the edges of the pump tank to lift off the support grillage. |
|
Shell Bulging Acid that has penetrated the wall lining will attack the carbon steel shell and form sulphate between the shell and brick. The pressure that builds up usually cannot push the bricks out because they are in compression. The only release for the pressure build up is to cause the carbon steel shell to bulge outwards as seen in the picture. |