What is the cause of formaldehyde silver catalyst poisoning?
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This post was last edited by zxh6267 on 2009-8-30 07:22 The formaldehyde unit was started after a major overhaul. The newly replaced catalyst reacted for less than three hours and was poisoned and deactivated. After analysis, the raw materials were qualified. What caused the poisoning? Has anyone encountered this situation?
It should be iron ion poisoning. After long-term parking for maintenance, the carbon steel pipes are very dirty, especially the air pipes and steam pipes. Just pay attention to purging the pipes in the future. If you have any questions, please contact me. www.xyjiaquan.com
The system is too dirty and heavily contaminated.