When designing for corrosion resistance, special attention must be paid to dead corners
Thread Content
Dead corners are areas where liquids do not flow well. Through improved design, the hazards of dead corners can generally be eliminated or reduced. The outlet of the container should be located at the lowest point of the liquid, and the part where the liquid can be stored should have an open drain hole. The hazard of dead corners is that once the container is emptied, the solution accumulated in those areas continues to corrode the container, and corrosive impurities may also deposit there. During normal operation, a concentration cell can be generated because the solution remains stationary in the dead zones. Equipment exposed to the atmosphere must not have pits where rainwater and dust can accumulate. After the container is emptied, check for any water accumulation or impurities; if present, they should be removed.
That makes sense. Thank you for sharing the information.
In corrosion prevention design, special attention must be paid to avoiding dead corners, as they can lead to liquid accumulation and thus accelerate corrosion. During design, it should be ensured that the container’s drain outlet is located at the lowest point, and that it is equipped with washable drain holes to allow for complete emptying and cleaning of any residual liquids and impurities inside the container. At the same time, there should be no areas outside the equipment where water or dust can accumulate. During normal use and maintenance, it is necessary to regularly check and remove accumulated water and debris in order to reduce the risk of corrosion. .
The corrosion hazard in dead corners is indeed severe
At the same time, more dead zones need to be given special attention during the transfer of solid materials. Material blockage and bridging, design of the equipment’s angle of repose, etc. – all these measures are taken to minimize the use of right-angled elbows and bag-shaped pipelines as much as possible.