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In the catalyst regeneration section of continuous reforming, what is the principle behind air drying in the de-regeneration gas cooling zone?
If I understand correctly what you mean by this wire, it is the instrument air series drying line used at the beginning of operation, and its purpose is to carry out drying during that initial phase
http://bbs.hcbbs.com/thread-1260557-1-1.html; it’s a post right below, dedicated to inquiries about this wire. Go and take a look to see if it’s the wire you’re referring to – it’s marked with a red line