High-purity ferric ions from hydrogenation units
Thread Content
Colleagues, are there any specific criteria regarding iron ions in the high-concentration wastewater from diesel and gasoline hydrogenation units? Is it necessary to use additives or something similar? Thank you to all the experts
Iron ions in high-concentration wastewater are difficult to detect due to the interference from hydrogen sulfide and ammonium salts present in it
What testing method is used for detection? Thank you
Where should the corrosion inhibitor be added to the reaction system? Thank you for the guidance
The corrosion inhibitor is added at the inlet of the injection pump, and injected by a high-speed centrifugal pump before high-pressure air cooling.
3PPM, add corrosion inhibitor at the water injection point
Are you guys joining too? How is it working?
Of course, add it. It is also necessary to adjust the water injection volume based on the ammonium hydrosulfide concentration at the cold high-temperature boundary. The effect is definitely better when it’s used, anyway; I’ve never heard of any hydrogenation unit that doesn’t use it.