NARL
Petroleum
- Feb 5, 2002
- 6
we are in the process of installing new sulfuric acid piping in our water treatment facility, and I would appreciate any guidance on material selection for the following applications.
1. Pure sulfuric acid up to the dilution point. 66 be sulfuric acid @ ambient temp. We are planning to use carbon steel, A106 pipe, is this suitable, any special fabrication requirements (e.g. PWHT, etc..?
2. After the dilution point we are at a pH of 0.39. ie. 2 wt % sulfuric acid (66 be sulfuric acid) with the balance water at ambient temperature. Here we seem to have a choice between alloy 20 valves and pipe, or 316L stainless steel. 316L is more cost effective and seems to meet our requirements, is this a suitable choice? If so are there any special fabrication requirements (e.g. PWHT, etc...)?
1. Pure sulfuric acid up to the dilution point. 66 be sulfuric acid @ ambient temp. We are planning to use carbon steel, A106 pipe, is this suitable, any special fabrication requirements (e.g. PWHT, etc..?
2. After the dilution point we are at a pH of 0.39. ie. 2 wt % sulfuric acid (66 be sulfuric acid) with the balance water at ambient temperature. Here we seem to have a choice between alloy 20 valves and pipe, or 316L stainless steel. 316L is more cost effective and seems to meet our requirements, is this a suitable choice? If so are there any special fabrication requirements (e.g. PWHT, etc...)?