The problem of pipe corrosion after steam tracing of sulfuric acid pipes
Thread Content
The project is located in Heilongjiang province. 90% of the sulfuric acid pipelines have a diameter of DN32; they are first covered with a protective layer and then wrapped together with the steam pipelines, with galvanized iron sheet covering the outside. Now, corrosion and breakage of these pipelines have occurred, and it is suspected that this is due to the increased corrosiveness of sulfuric acid when temperatures rise! I’m seeking advice from everyone regarding the precautions for heating and insulating sulfuric acid pipelines, especially the distance from steam pipelines and the thickness of the insulation layer! Thank you all!
Reply 1# balacove: Isolation blocks must be installed between the steam heating system and the acid pipelines to prevent direct contact between them, which could lead to excessively high local temperatures and increased corrosion. The insulation blocks can be made from asbestos boards cut into small pieces, or from other heat-insulating materials. For insulation, just follow the specifications.
Add an asbestos rubber sheet in the middle! That’s what we all do!