Transformation pressure difference problem
Thread Content
Gentlemen! Our plant produces synthetic ammonia from coal. Before the maintenance of the third shift converter, everything was normal; however, after it was restarted following the overhaul, the pressure difference across this converter became quite high, rising from 80 KPA to 180 KPA. A brief inspection revealed a significant amount of rust on the inlet side. Analysis of this rust showed that 95% of it consisted of iron, but no such rust was found when the pipelines were opened. How did this rust come about? Thank you!
Check whether the pipeline materials are consistent? Rust will form if the maintenance period is excessively long
It must have been brought in from outside; during the short period of maintenance, even if rust forms on the pipes, it will be just superficial rust
The material of the pipelines is the same; this year, there was a layer of rust on the pipelines when they were opened, but the rust was very shiny – it’s not clear what caused that
Well, rust seems to be formed during operation, but the rust is very shiny, which is hard to understand