How to address the corrosion of the inner wall and trays of the stabilizer in the absorption and stabilization section of the catalytic unit?
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Wet hydrogen sulfide environments are commonly found in the light oil sections of the secondary processing units in refineries. Wet hydrogen sulfide can cause two types of corrosion in equipment: uniform corrosion and wet hydrogen sulfide stress corrosion cracking. Our company processes low-sulfur oil. In the main fractionation tower of the catalytic unit, only ammonia and water are injected; this leads to severe corrosion on the inner walls and trays of the absorption towers used for stabilization. I would like to ask for suggestions on how to find a solution from a process perspective. Would injecting corrosion inhibitors at the top of the stabilization tower be sufficient to address this issue?
Try injecting some of the condensed water from the air compressor into the liquid separation tank at the outlet of the compressed rich gas.
Measure the total sulfur content in the feed and effluent waters of the rich gas washing process; is the washing water made from the sulfur-containing wastewater produced by the facility itself? Try changing it to purified water.
In both the normal and stable rich gas conditions, as well as in the barometer room, water is injected for washing; check to see if the amount of injection is appropriate Cathodic inhibitor in the wash water.