Reasons for the bulging of the lining plate in multi-layer wrapped ammonia synthesis towers
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Our facility has a Φ1000 multi-layer wrapped ammonia synthesis tower with a designed service life of 15 years. However, after 5 years of use, bulges about 500 mm long were found on the inner lining plate of the cylinder; the cause remains unknown at present. Design conditions: p=32 MPa, T≤200°C. Material: 16MnR. Media: H2, N2, NH3, etc. The internal components are selected based on the shaft diameter. This unit was put into operation in June 2005. Please provide technical support to help us analyze the cause.
It’s been posted for many days now – why hasn’t anyone started discussing it? I have been working in the chemical industry for many years, and this situation occurring in the ammonia synthesis tower seems to be the first of its kind across the country.
Could it be caused by local overheating? Or is it a problem with the manufacturing of the equipment itself?