Corrosion in the interstage pipelines of the compressor in a catalytic cracking unit
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Recently, the outlet pipeline of the pressure compressor in my facility has suffered severe corrosion, with leaks appearing in several places. What anti-corrosion measures have you adopted for the tops of the distillation towers in your facilities? Are there any effective methods? Thank you! !
The interstage cooler of the rich gas compressor should be replaced with copper material. The cooler in my workshop is made of copper; it’s been in use for three years without any problems
There are still some issues with wo juede
An ammonia feed line is installed on the outlet pipeline at the top of the distillation tower, to supply ammonia water continuously
Corrosion inhibitors or ammonia injection will both work; doesn’t acidic water stripping allow for the recovery of ammonia water? Injecting ammonia is relatively economical. .
In our workshop, ammonia water is injected, and the iron ion levels in the water of the buffer tanks at the inlet and outlet of the pressure compressor are analyzed regularly
I think using a corrosion inhibitor is a better option; it can protect the pipelines to a certain extent, reducing pipeline corrosion as well as the formation of salt deposits, especially in air-cooled pipelines.