Alkylated gasoline fails copper corrosion test
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Alkylated gasoline fails the copper corrosion test – what can be done?
Failure to meet the copper corrosion standards is mainly determined by the sulfur content in your product; this issue tends to occur during the initial stages of production； Second: the sulfur content in the raw materials is above the specified limit; it should be kept below 20PPM as much as possible ； Thirdly, there are too many impurities in the raw materials, which lead to chemical or physical acid leakage; as a result, substances that are insoluble in acids, alkalis, and water are formed. These substances include dihydrocarbon sulfates, which decompose into sulfides at 165°C, thereby causing corrosion in the distillation units or resulting in unacceptable levels of copper corrosion. I hope this helps you; if not, feel free to contact me! I’ll do my best to help you solve it!
The third scenario is similar to our current situation, but I have taken measures to keep the bottom temperature below 140; however, the situation has not improved. Could you please analyze it in more detail and advise me on specific strategies to address this issue?
I’m not aware of the specific details, so I can’t help resolve this issue, but it can be addressed from three aspects: first, improve the control of impurities in the raw materials, especially the acrylic acid content; second, keep the temperature during the alkylation reaction around 10°C to prevent acid leakage, and replace the substances in the system with alkylated oil； III. Add a corrosion inhibitor at the bottom of the tower; 0.1 L per hour is sufficient. Test the pH and impurity levels of the air cooler or cooler. I hope it can help you!
Could you please leave your contact information so it’s easier to get in touch? My QQ is 603906336
Someone asked me again today about what to do if the copper corrosion test fails. I’ve already explained it clearly: if what’s mentioned above doesn’t work, try reducing the amount used first to see if that helps! If that doesn’t work, simply add a coalescer to the acid equipment
I understand the need for reducing the volume you mentioned, but I’m not very familiar with the technology behind polycondensers used in acid-related equipment, nor do I know which companies employ them or what the results are like Thank you!