Line velocity for 98% H2SO4 1

[patrickraj]

What velocity is to be maintained in pipeline for 98% H2SO4.Pump discharge press is 10ksc, MOC of pipe is Carbon Steel.No limitation in line Pressure drop.

Thanks in advance.

 

[phex]

according to this site:

http://members.rogers.com/acidmanual/sa_piping.htm

Carbon Steel

Carbon steel is by far the most economical material of construction for conveying strong sulphuric acid but it has its limitations in terms of operating conditions which limits its use to but a few areas of the plant. Carbon steel in the presence of strong sulphuric acid will corrode to form a thin film of iron sulphate on the surface of the metal. It is this film of corrosion product that once formed prevents further corrosion of the underlying material. However, this protective film is very unstable an is easily disturbed and removed. It is this reason that the use of carbon steel is limited to handling acid at ambient temperatures and low velocities such as in product acid transfer and loading lines.

The acid velocity in the line should not exceed 0.5 m/s (1½ ft/s).

 

[patrickraj]

Thanks from heart.Indeed a good site.